Synthesis and Crystal Structure of a Tetranuclear Molybdenum(II) Silylamido Cluster |
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Authors: | Uwe Morgenstern Christoph Wagner Kurt Merzweiler |
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Affiliation: | Institut für Chemie, Naturwissenschaftliche Fakultät II, Universität Halle, Kurt-Mothes-Str. 2, 06120 Halle, Germany |
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Abstract: | Treatment of molybdenum(II) chloride with the difunctional silylamide Li2Me2Si(NPh)2 led to the formation of the tetranuclear cluster compound [Mo4{Me2Si(NPh)2}4]. According to the X-ray crystal structure determination, the central core of the cluster consists of four molybdenum atoms in a nearly rectangular arrangement. There are two μ4-κ-N,N,N',N'-Me2Si(NPh)22– ligands capping the Mo4 rectangle and two μ2-Me2Si(NPh)22– ligands located at opposite edges. The alternating Mo–Mo distances of 218.1(1) and 279.5(1) pm indicate the presence of a cyclobutadiyne type cluster with alternating Mo–Mo triple and single bonds. |
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Keywords: | Amides Molybdenum Cluster Structure elucidation X-ray diffraction |
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