Luhmann, H., Nather, C. and Bensch, W. (2011) Solvothermal Synthesis and Crystal Structure of the Non-Centrosymmetric Thioantimonate Ni(tren)(2) (2) Ni(tren)(en) (2)(Sb(4)S(8))(2)center dot 0.25H(2)O. Zeitschrift Fur Anorganische Und Allgemeine Chemie, 637 (7-8). pp. 1007-1012. DOI 10.1002/zaac.201100046.

Abstract

The new thioantimonate Ni(tren)(2)(2)Ni(tren)(en)(2)(Sb(4)S(8))(2)center dot 0.25H(2)O (tren = tris(2-aminoethyl)amine; en = ethylenediamine) was obtained under solvothermal conditions. The compound crystallizes in the non-centrosymmetric space group P1 with a = 9.424(2), b = 13.010(3), c = 18.883(4) angstrom, alpha = 102.46(3), beta = 96.11(3), gamma = 90.92(3), V = 2246.1(8) angstrom(3), Z = 1. Two of the unique Ni(2+) cations are octahedrally surrounded by two tridentate acting tren ligands (type 1) and the other two Ni(2+) cations are in an octahedral environment of one tetradentate tren molecule and one bidentate en ligand (type 2). The antimony atoms are in a trigonal pyramidal environment of three sulfur atoms. The SbS(3) pyramids are corner-linked to form two individual Sb(4)S(8)(4)-chains running parallel to 010 A. Along 001th the two different types of Ni(2+)-centered complex cations and the thioantimonate chains alternate. The interchain separations between Sb(4)S(8)(4) chains depend on the space requirements of the two different types of complex cations. Extended N-H center dot center dot center dot S hydrogen bonding interactions between the complex cations and the anionic chains generates a three-dimensional network.

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