Solvothermal Synthesis and Crystal Structure of the Non-Centrosymmetric Thioantimonate [Ni(tren)2]2[Ni(tren)(en)]2(Sb4S8)2·0.25H2O

Authors

  • Henning Lühmann,

    1. Institut für Anorganische Chemie, Christian-Alberts-Universität Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
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  • Christian Näther,

    1. Institut für Anorganische Chemie, Christian-Alberts-Universität Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
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  • Prof. Dr. Wolfgang Bensch

    Corresponding author
    1. Institut für Anorganische Chemie, Christian-Alberts-Universität Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
    • Institut für Anorganische Chemie, Christian-Alberts-Universität Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany, Fax: +49-431-880-1520
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  • In Memory of Professor Hans Georg von Schnering

Abstract

The new thioantimonate [Ni(tren)2]2[Ni(tren)(en)]2(Sb4S8)2·0.25H2O (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) Å, α = 102.46(3), β = 96.11(3), γ = 90.92(3), V = 2246.1(8) Å3, Z = 1. Two of the unique Ni2+ cations are octahedrally surrounded by two tridentate acting tren ligands (type 1) and the other two Ni2+ 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 SbS3 pyramids are corner-linked to form two individual [Sb4S8]4– chains running parallel to [010]. Along [001] the two different types of Ni2+-centered complex cations and the thioantimonate chains alternate. The interchain separations between [Sb4S8]4– chains depend on the space requirements of the two different types of complex cations. Extended N–H···S hydrogen bonding interactions between the complex cations and the anionic chains generates a three-dimensional network.

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