Abstract
The nonhybrid OPBE/TZVP density functional theory (DFT) method and the Gaussian09 program package were used to calculate the thermodynamic and geometric parameters of asymmetric macrocyclic M(II) complexes with three six-membered metal rings and (NNNN)-coordination of the donor sites of the ligand. The complexes are formed upon self-assembly (template synthesis) of hexacyanoferrates(II) of the corresponding M(II), propanedithioamide H2N-C(=S)-CH2-C(=S)-NH2, and formaldehyde H2C(=O) in gelatin-immobilized matrix implants. Note that complexes of this type are formed only for M = Ni, Cu, and Zn, while for M = Mn, Co, and Fe, these compounds are unstable. Bond lengths and bond and torsion angles are presented. In each of these complexes, both the MN4 chelate units and the N4 units and all sixmembered metal rings were found to be non-coplanar.
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Original Russian Text © O.V. Mikhailov, D.V. Chachkov, 2014, published in Zhurnal Neorganicheskoi Khimii, 2014, Vol. 59, No. 11, pp. 1527–1533.
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Mikhailov, O.V., Chachkov, D.V. Quantum chemical calculation of the molecular structures of (666)macrotricyclic chelates of 3D elements in the M(II)-propanedithioamide-formaldehyde systems by the density functional theory method. Russ. J. Inorg. Chem. 59, 1283–1289 (2014). https://doi.org/10.1134/S003602361411014X
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DOI: https://doi.org/10.1134/S003602361411014X