A hydrazine-based Schiff base ligand, H3L, was synthesized by the reaction of salicylhydrazide and dehydroacetic acid in methanol. A new 1D Zn(II) coordination polymer with the general formula of [Zn(mu-HL)(CH3OH)]nwas prepared from the reaction of H3L with Zn(OAc)2 & sdot;2H2O in refluxing methanol. H3L and [Zn(mu-HL)(CH3OH)]n were characterized by elemental analysis and various spectroscopic methods (FT-IR, UV-Vis, NMR, and photoluminescence), and their structures were determined by single-crystal X-ray analysis. Structural studies indicated that both H3L and [Zn(mu-HL)(CH3OH)]nare crystallized in the P21/c space group of the monoclinic system and H3L is coordinated to the Zn(II) core as a binegative ligand, HL2-, through its imine nitrogen, enolic and amidic oxygen (as a ONO-donor chelating unit) and phenolic oxygen. The ligand acts as both a chelating and a bridging ligand, and it is coordinated to three symmetry-related Zn(II) cores. The enolic oxygen acts as a bridging ligand between two Zn(II) cores with the Zn & sdot;& sdot;& sdot;Zni distance of 3.361 & Aring;. The hydrazone part of the ligand is coordinated in amidic form, and comparing the bond lengths of the free ligand with coordinated ligand indicates there are considerable changes in the bond lengths of the coordinated moieties. Intermolecular interactions in the structures of H3L and its Zn(II) coordination polymer were investigated using Hirshfeld surface analysis, and the results showed that these interactions have a considerable contribution to the stabilization of the crystal structure. The in vitro antioxidant activity of the ligand (H3L) and its Zn(II) coordination polymer was assessed via the DPPH radical scavenging assay. Zn(II) coordination polymer demonstrated significantly enhanced activity compared to the free ligand, exhibiting an IC50 value of 278 & micro;g/mL, versus 326 & micro;g/mL for the ligand. The results clearly indicate that coordination of the ligand to the Zn(II) ion significantly improves radical scavenging efficacy.

INTRODUCTION:The synthesis of silver nanoparticles in an environmentally sustainable method is becoming more and more crucial for uses in food safety and medicine. In this work, a peppermint essential oil nanoemulsion (PEON) is used to optimize the green synthesis of silver nanoparticles (AgNPs) employing response surface methodology (RSM). METHODS:PEON was utilized as the reducing and stabilizing agent in the synthesis of AgNPs. Silver nanoparticles were generated under ideal conditions (1 mM AgNO₃, 85.75 minute reaction time, 61.41°C heating temperature, 5.28 mL PEON, and 5.36 mL AgNO₃), and their formation, size, stability, and capping by plant-derived compounds were validated by UV-Vis spectroscopy (λmax = 415 nm), transmission electron microscopy (TEM) (mean particle size = 15.73 nm), zeta potential (ζ = +16.7 mV), PDI (0.2031), and FT-IR analysis. RESULTS:The improved process produced a consistent, stable, and uniformly distributed sample of AgNP, which has been produced through the refinement of synthesis. The synthesis of NPs was validated via a UVVis spectrophotometer, indicating the formation of AgNPs at about 415 nm. The PEON-derived AgNPs showed high levels of antioxidant activity (38.99%), antifungal properties, and antibacterial activity against Staphylococcus aureus (12.3 mm zone of inhibition). Therefore, these AgNPs may potentially have applications in the pharmaceutical or food safety industries. DISCUSSION:An efficient platform for the environmentally friendly synthesis of AgNPs is provided by PEON, and RSM allows for the optimization of synthesis parameters. The resultant NPs show potential for industrial development because of their relevant physicochemical characteristics and bioactivity. To enable wider functional use, more research should investigate scalability, long-term stability, and expanding applications. CONCLUSION:Employing PEON, RSM effectively improved the green synthesis of bioactive, stable AgNPs. These results exhibit the potential of an environmentally friendly strategy for upcoming advancements in food safety and pharmaceuticals.

Protonation of the highly reactive 1:1 intermediate formed from triphenylphosphine and the acetylenic ester in the presence of chromene derivatives affords the corresponding vinyl triphenyl phosphonium salt. The cation of these salts undergoes addition with the counter anion in acetonitrile at 25 degrees C to give the corresponding stabilized phosphorus ylides. Elimination of triphenylphosphine from the stabilized phosphorus ylides affords the corresponding dialkyl (Z)-2-[2-oxo-2H-chromen-4-yl]-2-butenedioate derivatives in fairly high yields. The reaction exhibits a high degree of stereoselectivity. The compounds were identified after synthesis by FTIR,1H, and 13C NMR spectroscopy.

This study reports the synthesis of novel Cu(II), Ni(II), and Zn(II) complexes coordinated with a pyrazole-carbimidothioate ligand. The compounds were characterized by elemental analysis, FT-IR,H-1 and C-13 NMR, DEPT-135, thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM), and molar conductivity measurements. Their linear optical properties were investigated by ultraviolet-visible absorption and photoluminescence spectroscopy. The nonlinear optical (NLO) properties were evaluated using the Z-scan technique under continuous-wave (CW) excitation with a 35 mW He-Ne laser at 632.8 nm. All complexes exhibited negative nonlinear refraction (n(2) < 0), indicative of self-defocusing behavior along with saturable absorption. The Zn(II) complex (3) demonstrated the strongest NLO response, with a nonlinear refractive index n(2) = -2.43 & times; 10(-10) m(2) W-1, nonlinear absorption coefficient beta = -3.12 & times; 10(-4) m W-1, together with pronounced fluorescence emission. These findings highlight the potential of such metal complexes as promising materials for nonlinear optical applications.

Integrating magnetic, carbonaceous, and porous mineral components into a polymeric matrix provides a materials-chemistry approach for regulating interfacial structure and the resulting functional properties of composite membranes. This study presents electrospun poly(ε-caprolactone) (PCL) nanofibers containing a ternary magnetic–mineral hybrid comprising zero-dimensional Fe3O4 nanoparticles, two-dimensional graphene oxide (GO) sheets, and porous three-dimensional Zeolite Beta. Pristine PCL, binary Fe3O4–GO–PCL, and zeolite-containing Fe3O4–GO–PCL composites were comparatively examined to assess the effect of ternary filler incorporation on the structural, thermal-residual, mechanical, and preliminary biointerface properties of the membranes. Fourier-transform infrared spectroscopy revealed the characteristic vibrational bands of PCL together with FeO and aluminosilicate-related Si–O–Si/Al–O–Si bands, while X-ray diffraction retained the characteristic PCL reflections and showed additional reflections attributable to Fe3O4 and zeolite phases. Scanning electron microscopy showed continuous, bead-free nanofibrous architectures, and energy-dispersive X-ray spectroscopy confirmed Fe in the binary composite and Fe, Si, and Al in the zeolite-containing ternary composite. Thermogravimetric analysis showed an estimated residual mass of approximately 12–15% at 600 °C for the ternary composite, compared with less than 1% for pristine PCL and approximately 3–5% for Fe3O4–GO–PCL, consistent with a modified degradation profile associated with the inorganic constituents. Tensile testing suggested that the ternary composite showed a distinct tensile deformation response compared with the other formulations. MTT analysis showed time-dependent changes in cellular metabolic activity over 3–14 days, whereas Alizarin Red S staining showed visually greater calcium-rich mineral-associated staining in the zeolite-containing composites than in pristine PCL. These findings suggest that the incorporation of Fe3O4, GO, and Zeolite Beta within electrospun PCL produces a structurally integrated ternary composite with modified mechanical response, increased inorganic residue, and a preliminary cell-compatible mineralization response. The resulting membranes provide a chemistry-driven basis for further investigation of multifunctional polymeric interfaces combining magnetic, porous-mineral, and structural functionalities.

Designing magnetically responsive mineral frameworks represents a promising route toward multifunctional materials for biomedical applications. In this study, three inorganic hosts-zeolite, hydroxyapatite, and silicate-were engineered to incorporate Fe3O4 nanoparticles via a thermal-assisted synthesis route, aiming to achieve stable and tunable magnetic mineral nanocomposites. Structural (XRD) and spectroscopic (FTIR) analyses confirmed successful integration of Fe3O4 within each mineral lattice, while morphological (SEM) and magnetic (VSM) characterizations revealed homogeneous particle dispersion, superparamagnetic behavior, and crystallographic compatibility among phases. The composites exhibited particle sizes of 15-30 nm, moderate saturation magnetization (12-18 emu g-1), and high surface areas that balance magnetic responsiveness with physicochemical stability. Initial assessments of surface chemistry and dispersion suggested suitable drug adsorption capability and colloidal robustness. Collectively, these findings highlight the significance of the synthesized mineral-based magnetic nanocomposites as versatile and structurally coherent platforms for targeted drug delivery and bone tissue repair, with zeolite and hydroxyapatite demonstrating the most consistent magneto-chemical integration.

Engineering polymer nanofibers through controlled interfacial chemistry provides an effective strategy for tailoring structure-property relationships in hybrid organic-inorganic systems. In this study, electrospun polycaprolactone (PCL) nanofibers incorporating a Fe3O4/graphene oxide (GO) hybrid nanophase were developed to investigate how oxide-carbon interfaces influence the physicochemical behavior of a semicrystalline polymer matrix. Graphene oxide introduces oxygen-containing functional groups and a high-aspect-ratio carbon framework, while Fe3O4 nanoparticles provide an inorganic phase capable of interacting with both GO sheets and PCL chains through interfacial interactions. Structural characterization using FTIR and XRD confirmed the successful incorporation of the hybrid nanofillers and indicated interactions that influence polymer chain organization and crystallinity. Thermal analysis revealed that the Fe3O4-GO hybrid phase increased the thermal degradation onset temperature of the composite nanofibers by approximately 40 degrees C compared with pristine PCL. SEM observations showed that the electrospun scaffolds maintained a uniform nanofibrous architecture while exhibiting modified surface morphology and nanoscale roughness after nanofiller incorporation. Biological evaluation demonstrated that all scaffolds supported the viability and proliferation of adipose-derived mesenchymal stem cells (ADMSCs). Notably, the Fe3O4-GO-PCL scaffold exhibited significantly higher metabolic activity after *14 days of culture (p < 0.05) compared with pristine PCL and GO-PCL scaffolds. Furthermore, Alizarin Red S staining after 21 days of osteogenic induction revealed enhanced calcium deposition on the hybrid scaffold, indicating improved mineralization potential. Overall, these findings demonstrate that the synergistic integration of Fe3O4 nanoparticles and graphene oxide within electrospun PCL fibers enables simultaneous modulation of thermal behavior, surface morphology, and cellular responses. The developed Fe3O4-GO-PCL nanofibrous scaffold therefore represents a promising platform for further investigation in bone tissue engineering applications.

A magnetic covalent triazine organic framework was prepared and used in dispersive solid phase extraction of triazine herbicides from milk samples. A core-shell magnetic nanocomposite was synthesized using nickel ferrite, a therapeutic deep eutectic solvent, and a carbon triazine framework. The deep eutectic solvent was utilized to enhance the adhesion and growth of the triazine framework on the nickel ferrite improving the sorbent efficiency in adsorbing the analytes. The extraction procedure began by adding suitable amount of the adsorbent to the deprotonated milk sample, adjusting to alkaline pH, and vortexing. The adsorbed analytes were eluted with acetone. To further concentrate the analytes, acetone was evaporated and the residue was dissolved in a smaller volume of acetone. The method demonstrates acceptable limits of detection (0.27-1.3 ng/mL) and quantification (0.89-4.3 ng/mL), a broad linear range (4.3-500 ng/mL), good extraction recoveries (72-82 %) and enrichment factors (360-410), approved precision (relative standard deviations <= 4.5 %), and good coefficient of determination (r2 >= 0.992). The method was used for the analysis of cow milk samples packaged in tetra pack boxes and the results confirmed the absence of analytes.

In attempt to develop an efficient photocatalyst, TiO2 particles were doped with iron to give Fe-TiO2 particles with lower band-gap energy (2.25 eV). The resultant particles were then incorporated in Cu-based metal-organic framework with high specific surface area (1151 m2g-1) via in-situ approach to furnish a photocatalytic nanocomposite, which was comprehensively characterized via FTIR, XRD, BET, XPS, SEM/EDS, TEM and DRS. The results underlined that metal-organic framework was successfully formed in the presence of Fe-TiO2 particles and the particles were located on the surface and within the pores of metal-organic framework. Moreover, the band-gap energy of the composite was measured as 2.60 eV. The photocatalytic activity of the as-prepared photocatalyst was assessed for degradation of Congo red dye under UV light irradiation and the effects of influential parameters, such as dye initial concentration and catalyst loading were investigated. The results confirmed high photocatalytic activity of the composite (89 % degradation yield), which was superior compared to that of its components, confirming the synergistic effects. Furthermore, the composite was recyclable and could be recovered and reused for six successive runs with slight loss of activity and leaching of Fe-TiO2 (1 wt%). Kinetic studies also indicated that photodegradation proceeded via a second-order model.

Two mononuclear rhenium coordination compounds with hydrazone ligand, [ReOBr2(PPh3)(HL)]& sdot;(CH3CN) (1) and [ReCl2(PPh3)2(HL)]& sdot;(CH3CN) (2), were synthesized by the reaction of ReOBr3(PPh3)2 or ReOCl3(PPh3)2 with H2L in acetonitrile (H2L = (E)-N'-(1-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)ethylidene)picolinohydrazide). Compounds 1 and 2 were characterized by spectroscopic methods and their structures were determined by single crystal X-ray analysis. Structural studies indicated that despite the similarity of the reactions and structures, the oxidation state of rhenium ion in 1 is mainly Re(V) but, in compound 2 it is reduced to Re(III) during the synthesis procedure. The hydrazone ligand in these compounds has similar coordination mode and it is coordinated as a bidentate N- and O-donor mononegative ligand, HL-1. TGA analysis showed that these compounds are stable up to 200 degrees C and they decompose in two steps in the range of 200-700 degrees C. The intermolecular interactions in these compounds were investigated by Hirshfeld surface analysis which revealed there are several intermolecular C- H & sdot;& sdot;& sdot;N, C- H & sdot;& sdot;& sdot;X (X = Br and Cl) and C- H & sdot;& sdot;& sdot;pi interactions which contribute in the stabilization of the crystal structures.

A dispersive solid phase extraction method using new magnetic nanoparticles based on nickel ferrite was introduced for the extraction of six triazole pesticides (penconazole, hexaconazole, tebuconazole, diniconazole, triadimefon, and difenoconazole) from water samples before liquid chromatography-tandem mass spectrometry analyses. Initially, a new deep eutectic solvent was synthesized with 1,2,4-triazole and n-octanol for surface modification of the nanoparticles easily achieved through microwave radiation. The nanoparticles morphology, magnetic properties, adsorption capacity, isotherms, and crystalline patterns of the sorbent were examined. The capability of the sorbent was evaluated by extracting the target pesticides from water samples showing significant differences in adsorption capacity and efficiency between the modified and non-modified nanoparticles. High extraction recoveries (68-86 %) were achieved for the analytes using small amounts of the sorbent with low limits of detection (0.03-0.08 ng mL- 1) and quantification (0.13-0.29 ng mL- 1), a wide linear range (0.29-250 ng mL- 1), and acceptable precision (relative standard deviations <= 6.9 %).

Functionalization of compounds is one of the most effective methods for creating new compounds with new properties and characteristics. Therefore, in this present study, multi-component nitrogen-containing compounds were utilized due to their high chemical reactivity and significant potential for structural modification. Accordingly, aliphatic and aromatic compounds incorporating oxygen and nitrogen atoms were selected as the most suitable candidates for achieving the objectives of this research. Therefore, in the first step, the 2,2′-benzimidazole compound was synthesized and subsequently functionalized with a halo-carboxylic acid derivative to form polydentate heteroatom linkers. The resulting MOFs composite were obtained through the coordination reaction between Cu (II) ions and the 2,2′-bibenzimidazole-dicarboxylic acid (BIMCA) ligand and g-C₃N₄ (GCN) on epoxy resin/graphite electrode (CEGEs) with Layer-by-Layer (LbL) chemical nucleation methods. The synthesized compounds were characterized using FT-IR, 1H NMR, XRD, SEM, EDX, and melting point technique. The practical application of Cu-MOFs/GCN/CEGES and the electrochemical behavior of Propranolol (PROP) were examined in PBS medium through various electrochemical techniques, such as differential pulse voltammetry (DPV), chronoamperometry (CHA), and cyclic voltammetry (CV). The essential parameters, such as the charge-transfer coefficient (α = 0.65), diffusion coefficient (D = 7.64 × 10−4 cm2/s) and catalytic rate constant (Kcat = 0.183 × 104 cm3.mol−1. s−1), were evaluated for the electrocatalytic oxidation of PROP. The experimental findings show that the modified electrode successfully detects PROP through DPV, with a detection limit reaching 2.54 μM. Finally, the proposed electro-chemical sensing platform was successfully applied to determine low PROP concentrations in blood samples, suggesting its great applicability in clinical analysis and quality control.

The ZnCrCe-mixed metal oxide catalyst (ZnCrCe-MMO) was synthesized through the thermal treatment of ZnCrCe-Layered Double Hydroxides (ZnCrCe-LDHs) precursors. The LDH precursor underwent surface modifications via two distinct methods: acid etching and alkali etching, followed by calcination, resulting in the formation of ZnCrCe-MMO-A and ZnCrCe-MMO-B respectively. These modifications were evaluated for their impact on the photodegradation efficiency of organic pollutants, specifically methylene blue dye (MB) and tetracycline antibiotic (TC). The confirmation of synthesis of the catalysts, along with their physicochemical and electrochemical properties, were thoroughly investigated using a variety of analytical techniques, including XRD, FT-IR, FE-SEM, TGA, BET, HR-TEM, XPS, DRS, ICP, Raman analysis, EDS, and Mott-Schottky analysis. This study reports, for the first time, the photocatalytic degradation of methylene blue and tetracycline pollutants using the ZnCrCe-MMO-A and ZnCrCe-MMO-B catalysts. Furthermore, the formation of intermediate oxidative species (O2 center dot-) during the photocatalytic reactions was identified using various quenchers, and a potential mechanism for the process was proposed. The results indicate that the ZnCrCe-MMO-B catalyst demonstrates superior efficiency in the photocatalytic removal of pollutants. This research elucidates the effects of metal vacancies on the photodegradation process and offers a promising approach for achieving highly efficient photodegradation of organic pollutants.

In this paper, macrocycle compounds containing nitrogen and oxygen groups were synthesized via template condensation of o-phenylenediamine with various aromatic dicarboxylic acids. In the following stage, to create an appropriate linker for the formation of metal-organic frameworks (MOFs), the obtained macrocyclic compound was reacted with 4-chloro 2-methylimidazole derivatives in a straightforward reaction. A new metal- organic frameworks (MOFs) was formed by the interaction of Co (II) ions with a macrocyclic ligand, specifically the Zeolitic imidazolate framework macrocyclic ligand metal-organic frameworks (ZIF-MLMOFs). The synthesized compounds were thoroughly characterized using various physicochemical methods, including melting point determination and elemental analysis techniques such as XRD, NMR, and FT-IR spectroscopy. The results obtained were consistent with the proposed structures. In order to apply the synthetic material, the electrochemical technique was used for investigation of Losartan (LOS) drug sample. Subsequently, the catalytic activity of ZIF-MLMOFs/Nf/GCE was characterized by cyclic voltammetry (CV) and chronoamperometry (CA) for the oxidation of LOS in PBs media. The diffusion coefficient of LOS was found to be (DLOS =7.94x10- 6 cm2s- 1) and the catalytic rate constant was measured as (kcat = 1.75x106 cm3 mol-1 s- 1). Differential pulse voltammetry (DPV) exhibited a linear response range of 1.99-100 mu M with a limit of detection of 0.76 mu M. The electrochemical sensor exhibited exceptional selectivity and sensitivity, along with reproducibility and repeatability, which can enhance the application of MOFs in drug electrochemical sensors.

The combination of PbBr2 with 3-(2-pyridyl)-5-(4-chlorophenyl)-1,2,4-triazine (PCPT) results in a 2-D Pb(II) coordination polymer, denoted as [Pb-9(PCPT)(4)Br-18](n). This compound has been identified and studied through CHN analysis, FT-IR, and 1H NMR spectroscopy, in addition to detailed analysis using single-crystal X-ray diffraction techniques. Considering the primary and secondary Pb-N and Pb-Br bonds, Pb1 and Pb2 exhibit hemidirected pentagonal bipyramidal geometries, whereas Pb3, Pb4, and Pb5 demonstrate holodirected octahedral geometries. The 2-D structure transitions into a 3-D arrangement due to the presence of non-covalent C-H & mldr;Br and pi & mldr;pi stacking interactions. The interactions highlighted above enhance the structural stability and support the transfer of charge and energy between metal centers, positioning the polymer as a potential candidate for luminescence applications. Analysis of the electro-optical characteristics of this compound indicates its suitability as a luminescent material for incorporating into organic light-emitting diodes.

Synthesis, spectroscopic and structural characterization of two new binuclear lead(ii) complexes with PMPT ligand and further investigation for their potential use as the emitting layer in organic light-emitting devices (OLEDs).

Three new Pb(II) complexes of 3-(2-pyridyl)-5-(4-methoxyphenyl)-1,2,4-triazine (PMPT) ligand with different anionic co-ligands (1: nitrate, 2: perchlorate and 3: isothiocyanate) in 2 : 1 molar ratios of PMPT ligands and lead(II) salts, [Pb(PMPT)2(NO3)2] (1), [Pb(PMPT)2(ClO4)2] (2) and [Pb(PMPT)2(NCS)2] (3) were synthesized and characterized by physicochemical (CHN, FT-IR and 1H NMR) and single-crystal X-ray diffraction methods. By considering the obtained structural parameters, the lead atoms in 1, 2 and 3 have PbN4O4, PbN4O2 and PbN6 environments, respectively, with holodirected (for 1) and hemidirected (for 2 and 3) coordination spheres. We used electro-optical Pb(II) complexes family as emitting layer to investigate in fabrication of OLEDs. The current-voltage, luminescence-voltage characteristics and the absorption (Abs) and electroluminescence (EL) properties of the complex have been investigated. The forester radius, quantum yield, and electroluminescence have been studied. The current work demonstrates synthesis, spectroscopic and structural characterization of three new lead(II) complexes with PMPT ligand and further investigation such as the forester radius, quantum yield, the current-voltage, luminescence-voltage characteristics and the absorption (Abs) and electroluminescence (EL) properties of the complexes has been conducted for their potential use as the emitting layer in organic light-emitting devices (OLEDs). image

[This corrects the article DOI: 10.5812/ijpr-136738.].

In this research, a novel macrocyclic ligand was prepared by hydrogenation tetra aza macrocyclic and coupling with the 2-chloro-benzimidazole derivatives. The new metal-organic frameworks (MOFs) were synthesized by a reaction of Cu (II) ion with macrocyclic ligand (copper-macrocyclic organic framework (Cu-MMOFs)). The synthetic compound fully characterized by various analysis techniques. In electrochemical studies, Cu-MMOFs were employed as excellent modifiers on the surface glassy carbon electrode (GCE) with Nafion (NF) as (CuMMOFs/Nf/GCE) modified electrode to investigate the analytical performance of digoxin (DIG) with different electrochemical methods to clarify the electrocatalytic properties of DIG in phosphate buffer (PBS) solution. The diffusion coefficient (DDIG = 1.38x10-6 cm2 s- 1) and catalytic rate constant (kcat = 0.287x106 cm3 mol-1 s- 1) were estimated for the oxidation of DIG at the surface of modified electrode. Under the optimal condition, the CuMMOFS/Nf/GCE displays a good electrochemical nature for DIG in the 0.019-38 mu M range, with a low limit of detection (LOD) 0.0158 mu M (S/N = 3) and a great reproducibility, repeatability and admirable selectivity. Additionally, the fabricated sensor exhibited excellent performance by measuring the concentration of DIG in real samples (such as human blood serum samples), which proves the potential of Cu-MMOFS/Nf/GCE for practical applicability with good favorable recoveries (100.35 %).

A novel three-dimensional (3D) metal-organic compound Co3(BDC)3(DMF)2(H2O)4.2DMF (DMF= N,N-dimethylformamide; BDC= 1,4-benzenedicarboxylate) (Co-BDC (1)) has been synthesized under solvothermal method using Co2+ salt and BDC as a rigid ligand. The material was structurally characterized by single-crystal X-ray diffraction (SXRD), powder X-ray diffraction (PXRD), Fourier transform infrared (FT-IR), thermogravimetric (TGA), inductively coupled plasma (ICP), and elemental (CHN) techniques. Oxidation of some olefins was evaluated with tert-butyl hydroperoxide (TBHP) in acetonitrile in the presence of Co-BDC (2) (activated Co-BDC (1)) as a heterogeneous catalyst. Among the substrates used for the oxidation reaction, desirable conversions of 97, 81.6, and 76% were obtained for cyclooctene, 1-hexene, and norbornene, respectively. Finally, the catalyst was recycled and reused (four times) without a remarkable decrease in the catalytic activity.