This study reports the synthesis and the characterization of two new six-coordinate low-spin iron(III) meso-arylporphyrin complexes, namely: bis(pyrazole)[meso-tetrakis(3,5-dimethoxyphenyl)porphyrinato]iron(III) triflate 0.678 n-hexane solvate with the formula [Fe-III(T3,5-MeOPP)(pyzo)(2)](SO3CF3)(center dot)0.678(C6H14) (I), and bis(pyrazole)[meso-tetrakis(3,4,5-trimethoxyphenyl)porphyrinato]iron(III) triflate pyrazole monosolvate with the formula [F-e(III)(T3,4,5-MeOPP)(pyzo)(2)](SO3CF3)(center dot)(C3H4N4) (II). X-ray diffraction, H-1 NMR and EPR studies elucidate the structural and electronic factors governing the ground state configuration, specifically distinguishing between the common (d(xy))(2)(d(xz), d(yz))(3) and the less common (d(xz), d(yz))(4)(d(xy))(1) electronic states. X-ray crystallography confirms that both species are low-spin (S = 1/2). The methoxy substitution pattern critically influences the porphyrin core distortion; the [Fe-III(T3,4,4-OMePP)(pyzo)](+) (pyzo = pyrazole) ion complex II exhibits pronounced ruffling and saddling deformations of the porphyrin core compared to the moderately distorted core of the [Fe-III(T3,5-OMePP)(pyzo)(2)](+) ion complex I. This structural variance dictates the axial ligand orientation, which is perpendicular in II and nearly parallel in I. Spectroscopic analysis confirms that complex II adopts the less common (d(xz), d(yz))(4)(d(xy))(1) electronic configuration, as evidenced by an axial-type EPR spectrum and downfield H-1 NMR shifts for beta-pyrrolic protons. Conversely, complex I displays a rhombic EPR spectrum characteristic of the common electronic configuration, although its H-1 NMR shift presents a positive value typically associated with the less common electronic state. These findings highlight that for low-basicity axial ligands such as pyrazole (pKa approximate to 2.5), steric hindrance imposed by the porphyrin periphery plays a decisive role in stabilizing the less common electronic configuration. Furthermore, electrochemical investigations reveal that the less distorted [Fe-III(T3,5-OMePP)(pyzo)(2)](+) ion complex I facilitates enhanced interfacial electron transfer, resulting in superior sensitivity for Cd2+ detection compared to the [Fe-III(3,4,5-OMePP)(pyzo)(2)](+) ion complex II.

We present the synthesis and comprehensive characterization of a novel zinc(II) metalloporphyrin, formulated as [Zn(TCF3PP)(pyzi)] (complex I), where TCF3PP is the meso-tetrakis(para-trifluoromethylphenyl)porphyrinate and pyzi is pyrazine. Notably, we detail its spectroscopic characterization using UV/Vis, infrared, and 1H NMR techniques, along with single crystal X-ray diffraction and Hirshfeld surface analysis, establishing the molecular architecture of complex I. The electrochemical properties were assessed through cyclic voltammetry, demonstrating the complex's capability to be immobilized on a screen-printed gold electrode (SPCE) for sensor applications. This modified electrode exhibited exceptional electrochemical performance in detecting ciprofloxacin (CIP) and hazardous heavy metal ions such as Pb2+ and Cd2+, showcasing superior sensitivity and selectivity. Our findings underscore the innovative use of pyrazine-coordinated zinc(II) porphyrin as a promising platform for multifunctional electrochemical sensing applications.

In this study we report the synthesis of a new ferrous metalloporphyrin namely the bis(tert-butyl isocyanide) [meso-tetra(para-bromophenyl)porphyrinato]iron(II) coordination compound with the formula [FeII(TBrPP)(t-BuNC)2] (complex 1). This complex was prepared by reacting the ferric [FeIII(TBrPP)(SO3CF3)] (SO3CF3-= triflate) starting material with an excess of tert-butyl isocyanide (t-BuNC) under controlled atmosphere. This Fe(II)bis(t-BuNC)-TBrPP derivative was characterized by spectroscopic methods (UV/Vis, IR), elemental analyses and the structure elucidation has been carried out by single crystal X-ray structure investigation. The intermolecular interactions were determined by the PLATON program and Hirshfeld analysis. DFT/TD-DFT studies on complex 1 involved structure optimization, frontier molecular orbital analysis, MEP evaluation, and NCI-RDG analysis using the B3LYP-D3/LanL2DZ method were carried out. Furthermore, molecular docking study on our ferrous-bis-(t-BuNC)-TBrPP revealed strong binding affinity to Bcl-2 proteins, suggesting potential anticancer applications.

The paper presents a combined experimental and computational investigation of the cadmium(II) (acetato)-mesotetra(para-methoxyphenyl)porphyrin ion complex [Cd(TMPP)(OAc)]-(complex 1), which was prepared by the reaction of [Cd(TMPP)] with an excess of NaOAc and crysptand-222 in chloroform. This new Cd(II) meso-arylporphyrin was characterized by elementary analysis and UV-Vis, IR, and 1H NMR spectroscopic techniques along with single crystal X-ray diffraction. This later study shows that the Cd2+center ion adopts a distorted square pyramidal geometry and is coordinated by the four nitrogens of the TMPP porphyrinate and the oxygen atom of the acetato axial ligand. The intermolecular interactions in the crystal lattice of [Cd(TMPP)(OAc)]-, determined using the PLATON program and Hirshfeld surfaces analysis, are of types O__H...O, C__H...H, C__H...Cl, C__H...Cg and C__Cl...Cg (Cg is the centroid of a phenyl or a pyrrole ring) involving the [Cd(TMPP)(OAc)]-ion complex, the [Na(crypt-222)]+ counterion, and the chloroform and water molecules found in the crystal lattice of complex 1. Using DFT calculations at the DFT/B3LYP-D3/lanL2DZ level of theory HOMO-LUMO orbitals of 1 and several global reactive parameters of this compound were calculated. The 3D-MEP plots of [Cd(TMPP) (OAc)]-were also determined. This theoretical study includes the sensing properties of complex 1 and the NO2, CO2, N2, and SO2 gas molecules. Furthermore, experimental tests have been carried out concerning the impedance and dielectric spectroscopy of the InGa/[Cd(TMPP)(OAc)]/InGa device.

This study aims to synthesize lead oxide (PbO) nanoparticles via a green method using rosemary extract as both a reducing and capping agent, for the electrochemical detection of ciprofloxacin (CIP). Multi-characterization techniques, including ultraviolet (UV) spectroscopy, fourier transform infrared spectroscopy (FTIR), energydispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), scanning electron microscopy (SEM), and brunauer-emmett-teller method (BET) were employed to analyze the structure and properties of the PbO@ROS nanoparticles. All the characteristics techniques have demonstrated a successful nanoparticle design with good disruption and homogeneity, with a size in order of 13 nm. The synthesized nanoparticles were then integrated with screen-printed carbon electrodes to create an electrochemical platform for ciprofloxacin detection. Cyclic voltammetry (CV) is utilized to evaluate the sensor's modification with the nanoparticles. Differential pulse voltammetry (DPV) was performed to monitor the detection of the antibiotic in buffer solution. With excellent stability and reproducibility, the sensor demonstrated a good answer toward CIP in the range of 1.75 to 300 nM, with a low limit of detection in the order of 0.27 nM. Selectivity, a critical parameter in sensor performance, was assessed against various analogs, showing promising selectivity for ciprofloxacin. Validation through real sample measurements revealed the sensor's capability to recognize ciprofloxacin in complex matrices, with recovery rates ranging from 96 % to 110 %. Through this study, we aim to highlight the effectiveness of rosemary-mediated synthesis of green nanoparticles in the enhancement of ciprofloxacin detection.

Herein, we have presented a new chromium(III) hexacoordinated metalloporphyrin with two eta(1)-formato axial ligands. Based on the single crystal X-ray molecular structure, the formula of this new coordination compound is [Na(crypt-222)][Cr-III(TMPP)(eta(1 )- OCOH)(2)]center dot 0.3CH(2)Cl(2)0 center dot 3H(2)O (complex I), where TMPP is the (meso-tetra(para-methoxyphenyl)porphyrinate and crypt-222 is the cryptand-222. UV/Vis, fluorescence, infrared, mass spectrometry, and cyclic voltammetry techniques were employed for a complete characterization and the electronic properties study of complex I. A Hirshfeld surface analysis was performed to elucidate the intermolecular interactions responsible for the stability of the crystal lattice of complex I. In order to get further information on the intermolecular interactions and the reactivity of the title compound, DFT/TDDFT calculations were carried out, including molecular structure optimization using the DFT/B3LYP-D3/LanL2DZ level of theory, the frontier molecular orbitals (FMOs) calculations, the molecular electronic potential analysis (MEP), and the QTAIM-NCIRDG analyses. Furthermore, the sensing efficiency of our new chromium(III) metalloporphyrin for the CO2, NO2, and O-2 gas molecules is also reported.

Herein, we have presented a new manganese(III) metalloporphyrin, named, based on the X-ray molecular structure, the bis(4-dimethylaminopyridine)[meso-tetra(para-chlorophenyl)porphyrinato]manganese(III) triflate 1.56 chloroform solvate 0.22 n-hexane solvate 0.22 hydrate with the following formula:[MnIII(TClPP)(DMAP)2] (SO3CF3)& sdot;0.22(C6H14)& sdot;1.56(CHCl3)& sdot;0.22(H2O) (complex I). This coordination compound was characterized by FT-IR and cyclic voltammetry. The dichloromethane solution UV/Vis spectrum of I is typical of a Mn(III) high-spin (S = 2) porphyrin complex with a redshifted Soret band with lambda max value of 487 nm. The single crystal X-diffraction technique was used to determine the molecular structure of our new Mn(III) bis(DMAP) porphyrin complex. Electron paramagnetic resonance (EPR) spectroscopy confirms that this new 3d4 Mn(III) metalloporphyrin (a non-Kramers system) in solid state is high-spin (S = 2). DFT/TD-DFT calculations on complex I were investigated, including (i) the molecular structure optimization using the DFT/B3LYP-D3/LanL2DZ level of theory, (ii) the frontier molecular orbital calculations and the deduction of the global indices of activities, (iii) the molecular electronic potential analysis (MEP), and (iv) the QTAIM and NCI-RDG analyses. Furthermore, complex I was tested against diverse amino acids of the selected Bcl-2 proteins using docking calculations.

Mol­ecules of the title complex are centrosymmetric and the Fe—N bond lengths to the N atoms of the porphyrin ring indicate that the FeII atom is in the low-spin state.

We hereby report the synthesis of a new hexacoordinated magnesium(II) metalloporphyrin with the formula [Mg (TBrPP)(4-pypo-& kappa;O)2] (1) where TBrPP is the meso-tetra(para-bromophenyl)porphyrinate and (4-pypo-& kappa;O) is the O-bonded 4-pyrrolidinopyridine axial ligand. This Mg(II) coordination is considered the linking isomer of the already known N-bonded 4-pyrrolidinopyridine (4-pypo-& kappa;N) with the formula [Mg(TTP)(4-pypo-& kappa;N)2] where TTP is the meso-tetra(p-tolyl)porphyrinate. Complex 1 was characterized by elemental analysis, IR, 1H NMR, UV/ Vis and fluorescence spectrometric techniques, cyclic voltammetry measurements as well as single-crystal X-ray diffraction analysis. The Wingx supported program PLATON and the Hirshfeld surface analysis were both used to elucidate the intermolecular interactions in the crystal lattice of complex 1.Computational studies at DFI/B3LYP-D3/6-31G(d,p)-LanL2DZ level of DFT were used to elucidate the mini-mum energy geometry, the HOMO and LUMO molecular orbitals characteristics and the reactivity of complex 1. The molecular electrostatic potential (MEP) calculations on complex 1 have been made to determine the electrophilic-nucleophilic character of our new Mg(II) metalloporphyrin. Furthermore, the quantum theory atom in molecule (QTAIM) calculations were performed to get more insights into the type of interactions between the [Mg(TBrPP)] moiety and the two 4-pyrrolidinopyridine axial ligands of complex 1.

Herein, we have presented a new cadmium(II) pentacoordinate porphyrin complex obtained by the reaction of the [(meso-tetra(para-methoxyphenyl)porphyrinato]cadmium(II) starting material ([Cd(TMPP)]) with an excess of potassium thiocyanate (KSCN) and crystand-222 (cryst-222) in the dichloromethane solvent leading to the coordination compound with the formula: [K(crypt-222)(H2O)][Cd(TMPP)(NCO)]center dot 2(CH2Cl2)center dot 0.5(C6H14)center dot H2O (symbolized by complex I). This species was characterized by elemental analysis, UV/Vis, FT-IR, and single crystal X-ray diffraction studies. The intermolecular interactions responsible of the cohesion of the crystal lattice of complex I were investigated using the Hirshfeld surface approach. DFT/TDDFT calculations on complex I were carried out including (i) Molecular structure optimization using the DFT/B3LYP-D3/lanl2dz level of theory, (ii) the frontier molecular orbitals (FMOs) calculations, (iii) the Mulliken charges distribution calculations, (iv) the Molecular electronic potential analysis (MEP), (v) an ab initio UV/Vis and IR calculations and (vi) the QTAIM and NCI-RDG analyses. These latter DFT/B3LYP-D3/lanl2dz calculations studies confirmed, inter alia, the strong hydrogen bond linking the NCO- axial ligand and the water molecule coordinated to the potassium counterion. Furthermore, the electrical conductance and dielectric properties of complex I were investigated shown firstly that the frequency dependence of electrical conductivity, follows the Jonscher's universal dynamic law and secondly that the obtained results have been discussed in terms of the OLPT and NSPT models, which is well adapted to our Cd(II)-porphyrin-NCO semiconductor material.

In the title compound, [FeII(C44H24Cl4N4)(C5H9N)2] or [FeII(TClPP)(t-BuNC)2] [where TClPP and t-BuNC are 5,10,15,20-tetrakis(4-chlorophenyl)porphyrinate and tert-butyl isocyanide ligands, respectively], the metal ion lies on an inversion center and is octahedrally coordinated by the N atoms of the porphyrin ring in the equatorial plane and by carbon atoms of the trans t-BuNC ligands in the axial sites. The Fe—N bond length of 2.0074 (14) Å suggests a low-spin complex (S = 0). The crystal packing of the title compound is sustained by C—H...Cl, C—H...N and C__H...Cg (Cg = the centroid of a pyrrole ring of the TClPP porphyrinate) interactions, leading to a three-dimensional network. The Hirshfeld surface (HS) analysis indicates that 61.4% of the intermolecular interactions are from H...H contacts while other contributions are from C...H/H...C, O...H/H...O and N...H/H...N interactions, which comprise 21.3%, 13.3% and 3.6% of the HS, respectively.

This work describes the synthesis of a novel zinc(II) porphyrin complex, namely [Meso-4α-tetra-(1,2,3-triazolyl)phenylporphyrinato]zinc(II) symbolized by 4α-[Zn(TAzPP)] (4), using the click chemistry approach in the presence of copper iodide. All of the synthetic porphyrin species reported herein were fully characterized by elemental analysis, infrared spectroscopy, proton nuclear magnetic resonance, UV-visible spectroscopy, and fluorescence. To synthesize the 4α-[Zn(TAzPP)] complex (4), we produced 4α-Meso-tetra-o-nitrophenylporphyrin (H2TNO2PP) and 4α-meso-tetra-o-aminophenylporphyrin (4α-H2TNH2PP) (1) using known classic literature methods. This 4α atropisomer was converted to 4α-meso-tetra-o-azidophenylporphyrin (4α-H2TN3PP) (3) by reaction with sodium nitrite and sodium azide, and then it was metalated by Zn(II), leading to [4α-meso-tetra(2-azidophenyl)porphyrinate]zinc(II) (4α-[Zn(TN3PP)]) (3). The click chemistry synthetic method was finally used to prepare 4α-[Zn(TAzPP)] (4). This new tetracoordinated zinc(II) porphyrin complex was prepared and characterized in order to: (i) produce a receptor for anion recognition and sensing application for Cl− and Br−; (ii) study the catalytic decomposition of rhodamine B (RhB) and methyl orange (MO) dyes; and (iii) determine the electronic characteristics as a photovoltaic device. Complex (4) formed 1:1 complex stoichiometric species with chloride and bromide halides and the average association constants of the 1:1 addicts were ~ 103. The photodecomposition of RhB and MO dyes in the presence of complex (4) as a catalyst and molecular oxygen showed that complex (4) presented a photodegradation yield of approximately 70% and could be reused for five successive cycles without any obvious change in its catalytic activity. The current-voltage characteristics and impedance spectroscopy measurements of complex (4) confirmed that our zinc(II) metalloporphyrin could be used as a photovoltaic device.

The present work describes the preparation and characterization of a new cobalt(III) porphyrin coordination compound named (chlorido)(nicotinoylchloride)[meso-tetra(para-chlorophenyl)porphyrinato]cobalt(III) dichloromethane monosolvate with the formula [CoIII(TClPP)Cl(NTC)]·CH2Cl2 (4). The single-crystal X-ray molecular structure of 4 shows very important ruffling and waving distortions of the porphyrin macrocycle. The Soret and Q absorption bands of 4 are very red-shifted as a consequence of the very distorted porphyrin core. This coordination compound was also studied by fluorescence and cyclic voltammetry. The efficiency of our four porphyrinic compounds—the H2TClPP (1) free-base porphyrin, the [CoII(TClPP)] (2) and [CoIII(TClPP)Cl] (3) starting materials, and the new Co(III) metalloporphyrin [CoIII(TClPP)Cl(NTC)]·CH2Cl2 (4)—as catalysts in the photochemical degradation was tested on malachite green (MG) dye. The current voltage of complexes 3 and 4 was also studied. Electrical parameters, including the saturation current density (Js) and barrier height (ϕb), were measured.

In this study, a new cobaltous-(hexamethylenetetramine) [meso-tetra(para-methoxyphenyl)porphyrin complex with the formula [Co II(TMPP)(HMTA)] (I) was synthesized. The molecular structure was confirmed in solution by H-1 NMR spectroscopy and mass spectrometry methods, and the single crystal X-ray diffraction structure of (I) was determined at both room temperature and low temperature. This species was further characterized by infrared, UV-visible and fluorescence spectroscopies, magnetic susceptibility measurements and cyclic voltammetry. The chemical reactivity behavior was also assessed theoretically through Density Functional Theory (DFT) approach. Magnetic investigation indicates that the Co(II)-HMTA porphyrin (I) species at low temperature is a cobaltous low-spin (S = 1/2) species while at high temperature complex (I) exhibits a spin-crossover low-spin (S = 1/2) <-> high-spin (S = 3/2). The adsorption kinetic of the "vat yellow 1 dye" was carried out in aqueous solution at pH = 6. The experimental results are better fitted using the pseudo second order model. Furthermore, complex (I) was tested as catalyst in the degradation of the vat yellow 1 dye using an aqueous H2O2 solution and by photodegradation under solar light. (C) 2020 Elsevier B.V. All rights reserved.

In this work, we report the single crystal X-ray molecular structure of the pentacoordinate zinc(II) porphyrin coordination compound [Zn(TFMPP)(HMTA)] (complex (I)), where TFMPP = meso-tetrakis[(para-tetratrifluoromethylphenyl]porphyrinato and HMTA = hexamethylenetetramine. The 3D Hirshfeld surfaces and the 2D fingerprint maps have been employed to investigate the intermolecular interactions in the crystal lattice of complex (I). The main part of this paper is devoted to the use of the free base porphyrin H2TFMPP and the metalled zinc(II)-HMTA-porphyrin derivative (I) as adsorbents for the toluidine blue (BT) dye. The kinetic of the adsorption process for both H2TFMPP and complex (I) fitted well with the Pseudo-Second-Order kinetic model and the adsorption isotherms were well described by the Langmuir model. The advanced statistical physics models were used to provide good interpretations of the adsorption of the BT dye. Furthermore, complex (I) was found to be a good catalyst for the removal of this cationic dye in 30% aqueous hydrogen peroxide solution. The theoretical thermodynamic analyses performed on the free base porphyrin H2TFMPP and complex (I) show that the adsorption of the BT pollutant on these porphyrin compounds is not only possible but also spontaneous. (C) 2021 Elsevier B.V. All rights reserved.

In this work, a new cadmium(II) complex namely the (1,4-diazabicyclo[2.2.2]octane)(meso-tetrakis(4-tertmethoxyphenyl)porphyrinato)cadmium(II) with the formula [Cd(TMPP)(DABCO)] (I) (DABCO = 1,4-diazabicyclo[2.2.2]octane) was successfully synthetized. The structure of (I) have been characterized by FT-IR, (HNMR)-H-1, UV-visible, fluorescence spectroscopies and single crystal X-ray diffraction technique. DFT calculations has been made for the structural, H-1 NMR spectroscopy and IR spectra analysis. The adsorption of methylene blue (MB) dye was studied to examine the efficiently of the [Cd(TMPP)(DABCO)] for removing the cationic dyes from aqueous solution. The Langmuir adsorption capacity (Q(max)(0)) at 290 K and pH 7.0 was found to be 69.24 mg.g(-1). The adsorption mechanism which involved pi-pi interaction between the MB dye molecule and the porphyrin ring of (I) is well described by the pseudo second-order and Elovich models.

Two new cobaltous-porphyrin complexes, namely (mu-piperazine)-bis[(meso-tetra(para-methoxyphenyl)porphyrinato)]cobalt(II) and (piperazine)[meso-tetra(para-chlorophenyl)porphyrin]cobalt(II) dichloromethane disolvate, with the formulas [{CoII(TMPP)}2(mu 2-pipz)] (complex 1) and [CoII(TClPP)(pipz)].2CH2Cl2 (complex 2), were used efficiently as catalysts in the degradation of 4-nitrophenol (4-NP) in an aqueous hydrogen peroxide solution. These cobalt(II)-pipz porphyrin complexes were characterized by a variety of spectroscopic methods including infrared, UV-visible, fluorescence, proton nuclear magnetic resonance, electron paramagnetic resonance (EPR) as well as mass spectrometry. A cyclic voltammetry investigation was also carried out on these two Co(II) metalloporphyrins. The EPR results indicate that both complexes 1 and 2 are paramagnetic low-spin (S = 1/2) cobalt(II) porphyrin complexes. Furthermore, the X-ray diffraction crystal structures of 1 and 2 were determined, and the intermolecular interactions were investigated by Hirshfeld surface analysis.

This study aims at first at the synthesis and the UV-visible, the infrared and the 1H Nuclear Magnetic Resonance spectroscopic characterizations of the 4-(dimethylamino)pyridine)[meso-tetra(para-chlorophenyl)porphyrinato]magnesium(II) with the formula [Mg(TClPP)(DMAP)].1/2C6H14 (I). The fluorescence and cyclic voltammetry studies have also been performed. The molecular structure of (I) was determined and described by single crystal X-ray diffraction analysis and Hirshfeld surfaces computational method. Complex (I) has a distorted square pyramidal geometry with a Mg__N(DMAP) distance value of 2.130 (4) Å and the average equatorial distance between the magnesium(II) central ion and the nitrogen atoms is 2.082 (3) Å. The crystal packing of our synthetic Mg(II) porphyrinic species is made by layers perpendicular to the [010] direction and the cohesion of the crystal packing is stabilized by nonconventional C–H···Cl and by C–H···Cg intermolecular interactions involving the pyrrole and phenyl rings of the porphyrin macrocycle. DFT calculations on (I) indicated an agreement with both UV-visible and IR experimental data. To gain further insights into the reactivity of (I), a density of states (DOS) and a molecular electrostatic potential (MEP) theoretical calculation were carried out. Furthermore, the antifungal and the antioxidant activities of the free base H2TClPP porphyrin, the [Mg(TClPP)] starting material and [Mg(TClPP)(DMAP)] (I) were also tested.

With the aim of studying the optical, electrochemical, and electronic properties of a new porphyrin-based material, we have synthesized a new porphyrinic complex, namely the (4,4′-bipyridine)(meso-tetratrifluoromethylphenylporphyrinato)zinc(II) 4,4′-bipyridine disolvate dihydrate complex with the formula [Zn(TFMPP)(4,4′-bipy)]·2(4,4′-bipy)·2H2O (I). This species is characterized by single-crystal X-ray molecular structure. The optical study is performed by UV–visible absorption and fluorescence spectroscopy. The fluorescence intensity presents an emission in the UV– visible range, indicating that this compound can be used as an optoelectronic material. The optical energy gap is 1.95 eV, and the current–voltage characteristics and impedance spectroscopy measurements have been studied to define the electronic properties of the zinc (II) porphyrin complex. The barrier height φb is calculated, and the space-charge limited current mechanism is found to control the conductance. The results from the electronic study confirm that our porphyrin derivative can be used for various optoelectronic applications. ∗Corresponding authors. ISSN (electronic) : 1878-1543 https://comptes-rendus.academie-sciences.fr/chimie/ 404 J. Brahmi et al.

Preparation and UV/vis, IR, MS,1H NMR, cyclic voltammetry and molecular structures of two new Co(ii) complexes withpara-methoxy-phenyl andpara-chloromeso-porphyrins and 4-cyanopyridine ligand (1–2). Catalytic oxidation data of MB dye using1–2.