Crystal and molecular structure and properties of [Ni(4-NH2Py)2(iso-Bu2PS2)2] and [Co(4-NH2Py)(iso-Bu2PS2)2] |
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Authors: | T E Kokina L A Glinskaya E A Sankova R F Klevtsova and S V Larionov |
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Institution: | (1) A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, Novosibirsk;(2) Novosibirsk State University, Novosibirsk |
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Abstract: | The interaction of the Co(iso-Bu2PS2)2 chelate with 4-NH2Py afforded a paramagnetic complex Co(4-NH2Py)(iso-Bu2PS2)2] (μeff = 4.53 BM). Single crystals of Ni(4-NH2Py)2(iso-Bu2PS2)2] (I) and Co(4-NH2Py)(iso-Bu2PS2)2] (II) were grown and used for X-ray diffraction investigation (X8 APEX diffractometer, MoK
α radiation). Crystals I are monoclinic with unit cell parameters a = 12.5336(5) Å, b = 9.4356(4) Å, c = 16.4095(6) Å; β = 111.351(1)°; V = 1807.4(1) Å3; Z = 2, ρ = 1.223 g/cm3, space group P21/n. Crystals II are triclinic with unit cell parameters a = 8.7572(4) Å, b = 9.6934(6) Å, c = 18.665(1) Å; α = 79.374(2)°, β = 87.049(2)°, γ = 75.640(2)°; V = 1508.6(1) Å3; Z = 2, ρ = 1.259 g/cm3; space group
. The structures of I and II are formed by isolated mononuclear molecules. The coordination unit is NiN2S4 (octahedron) in I and CoNS4 (tetragonal pyramid) in II. The 4-NH2Py molecule is coordinated through the N atom of the heterocycle. Electronic spectroscopy data for II agree with the symmetry of the NS4 polyhedron found by X-ray diffraction (XRD) analysis. The noncoordinated amine groups link the complex molecules via N-H...S
hydrogen bonds.
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Translated from Zhurnal Strukturnoi Khimii, Vol. 46, No. 6, pp.1072–1080, November–December, 2005.
Original Russian Text Copyright ? 2005 by T. E. Kokina, L. A. Glinskaya, E. A. Sankova, R. F. Klevtsova, and S. V. Larionov |
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Keywords: | diisobutyldithiophosphinate nickel cobalt 4-aminopyridine synthesis structure H-bonds |
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