It was shown that the efficiency of chromatographic separation of the racemates of 2-butanol, 2-hexanol, 3-hexanol, and 1-phenylethanol on columns with coordination compounds [Zn 2 (bdc)(S-Lact)(DMF)] n (bdc 2– = 1,4-benzenedicarboxylate, S-Lact – = (S)-lactate) and Na 7 {(VO) 7 Na 7 (H 2 O) 7 (β-CD) 2 } (β-CD = β-cyclodextrin) does not depend on the size of the alcohol molecule. It was found that in the case of the 1-phenylethanol racemate separation with [Zn 2 (bdc)(S-Lact)(DMF)] n the enantiomeric excess of the alcohol varies inversely with the viscosity of the solvent.

Coordination polymers [Fe2MO(Piv)6(L1) x ] n · nSolv (L1 = 1,2-bis(4-pyridyl)ethane, M = Ni (I), Co (II), x = 1.5; M = Cо (III), x = 2) are synthesized. Depending on the synthesis conditions, compounds II (cross diffusion of reactants) or III (fast mixing of reactant solutions) of different compositions are formed. It is shown by X-ray diffraction analysis (CIF files CCDC 1550804 (I) and 1550805 (III)) that compound I is a porous coordination polymer built of parallel 2D layers and compound III is a 1D coordination polymer. The crystals of complexes I and II are isostructural. The mutual arrangement of the 2D layers in compound II depends on the solvent in which this coordination polymer is formed. The desolvation of polymers I and II leads to the collapse of the crystal lattice. Unlike the complexes with L1, [Fe2NiO(Piv)6(L2)1.5] n · nSolv (IV · nSolv) is formed in the case of 4,4'-bipyridine (L2), regardless of the solvent nature, and its crystal lattice is formed by interpenetrating 2D layers. The mutual arrangement of the 2D layers in the crystal lattice of compound IV varies with the solvent used for the synthesis of this coordination polymer or for the resolvation of a sample of polymer IV. It is found that the parameters of the 57Fe Mössbauer spectra for compounds IV and IV · nDEF (DEF is N,N-diethylformamide) differ, which can be explained by a decrease in the symmetry of the coordination environment of the Fe3+ ions when the pores are filled with DEF molecules.

The molecular and crystal structures of complexes [Cu2(HL)2(CH3OH)2](BF4)2 ∙ C6H3Cl3 (I), [Cu2(HL)2(H2O)2](1,4-O2CС6Н4CO2) (II), and [Cu2(HL)2(H2O)2](4,4’-O2CС6Н4С6Н4CO2) (III) (H2L is 4,4’-[2-(3-hydroxyiminobutyl)imino]biphenyl, C6H3Cl3 is 1,2,4-trichlorobenzene) are determined by X-ray diffraction analyses. The crystalline lattices of complexes I and II contain discrete binuclear cations Cu2(HL) 2 2+ , whereas the crystalline lattice of compound III contains both discrete cations Cu2(HL) 2 2+ and polymer chains [Cu2(HL) 2 2+ ]n. In compounds I–III, the crystalline lattice units are joined by hydrogen bonds. The analysis of the temperature dependence of the magnetic susceptibility shows that the magnetic properties of compound III are determined only by antiferromagnetic interactions of the Cu2+ ions within the cations Cu2(HL) 2 2+

It was found that bis(2-benzimidazolyl)bisthiazole deposited on nanosized TiO2 in the presence of Zn2+ salts was able to generate a photocurrent upon irradiation by visible light in a cell with a solution of KI in acetonitrile. The activity of this compound was probably caused by the presence of the benzimidazole fragment (electron donor) and the bisthiazole group (electron acceptor), while zinc(II) played a role of agent, required for formation of an insoluble coordination compound on the surface of the TiO2. From comparison of the results with published data it can be concluded that the open-circuit potential of photovoltaic cells containing a benzimidazole fragment decreases with decrease in the energy of lowest unoccupied molecular orbital.

It was shown by cyclic voltammetry that the coordination polymers [Fe2NiO(Piv)6(L)x]n, where L is a ligand containing a 1,2,4,5-tetrazine or thiazolothiazole fragment, Piv– is pivalate, and x = 1 or 1.5, possess redox activity in the solid form when deposited on an inert electrode, and the redox potentials of the transitions correlate with the corresponding redox potentials of the ligands in solutions. The coordination polymer containing bis(4-pyridyl)thiazolothiazole catalyzes the electrochemical dehalogenation of CF3CHClBr with the formation of CF2=CHCl and CF3CH2Cl.

Porous coordination polymers [Fe2MO(Piv)6(L) x ] n (L is tris(4-pyridyl)pyridine, M = Ni (I) and Co (II); L is tris(4-pyridyl)triazine, M = Ni (III) and Co (IV); x varies from 0.7 to 1.17) are obtained. The structure of polymer I is determined by X-ray diffraction analysis. The choice of the solvent (chloroform or dimethylformamide (DMF)) for the preparation of polycrystalline samples affects the morphology of the crystals. It is found for the studied samples that an increase in the average crystal size (from 1 to 20 μm) and the enhancement of the crystallinity of the samples increase the sorption capacity with respect to hydrogen from 0.7 to 0.9% (78 K, 1 atm).

The reactions of 3d metal pivalates with pyridine-containing ligands of different structures afforded the 1D coordination polymers [Co 2 (Piv) 4 (dpe) 2 ] n , [Ni(Piv) 2 (dpe)(EtOH) 2 ] n , [Cu 2 (Piv) 4 (dpe)] n , [Cu(Piv) 2 (dpe)] n , [Ni(Piv) 2 (4-ptz)(EtOH) 2 ] n , and [Cu 2 (Piv) 4 (4-ptz)· · m Solv] n (Solv is EtOH, m = 2; Solv is C 6 H 6 , m = 1; Piv − is pivalate, dpe is trans -1,2-bis(4-pyridyl)ethylene, 4-ptz is 2,4,6-tris(4-pyridyl)-1,3,5-triazine), as well as the 3D coordination polymer [{Cu 2 (Piv) 4 } 3 (3-ptz) 2 ] n (3-ptz is 2,4,6-tris(3-pyridyl)-1,3,5-triazine). The sorption and magnetic properties of a series of the synthesized compounds and magnetic properties of the earlier characterized coordination polymer [Mn 2 (O 2 CC 6 H 5 ) 4 (dpe) 2 ·dpe] n were studied. It was shown that the desolvation of the complexes [Ni(Piv) 2 (4-ptz)(EtOH) 2 ] n and [Cu 2 (Piv) 4 -(4-ptz)·2EtOH] n resulted in the formation of the crystal structures, in which the pores are accessible to nitrogen and hydrogen at 78 K ( S BET are up to 92 m 2 g −1 ). The temperature dependences of the molar magnetic susceptibility for [Co 2 (Piv) 4 (dpe) 2 ] n , [Mn 2 (O 2 CC 6 H 5 ) 4 -(dpe) 2 ·dpe] n , [Ni(Piv) 2 (dpe)(EtOH) 2 ] n , [Ni(Piv) 2 (4-ptz)(EtOH) 2 ] n , and [Cu 2 (Piv) 4 -(4-ptz)·2EtOH] n are described in terms of models taking into account the zero-field splitting and exchange interactions or isotropic exchange Hamiltonians.

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

The reaction of trinuclear acetate complexes Fe 2 MO(AcO) 6 (H 2 O) 3 (M = Ni 2+ , Co 2+ ) with 4,4′-bipyridine (bpy) results, depending on the reaction conditions, in porous coordination polymers with the composition Fe 2 MO(AcO) 6 (bpy) 1.5 (with retention of the metal core Fe 2 MO(AcO) 6 ) or nonporous coordination polymers with the composition M 2 (AcO) 4 (bpy) 2 (with destruction of the metal core Fe 2 MO(AcO) 6 ). The adsorption and desorption properties of the compounds Fe 2 MO(AcO) 6 (bpy) 1.5 with respect to nitrogen and hydrogen were studied. The reaction of hexanuclear benzoate complex Mn 6 O 2 (PhCOO) 10 (MeCN) 4 with bpy or trans -1,2-bis(4-pyridyl)ethylene (bpe) in DMF results in destruction of the metal core Mn 6 O 2 (PhCOO) 10 and formation of nonporous coordination polymers, while the pivalate complex Mn 6 O 2 (Piv) 10 (EtOH) 3 (HPiv) under the same conditions gives rise to the coordination polymer containing Mn 6 O 2 (Piv) 10 structural blocks.