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Synthesis and Crystal Structure of a Tetranuclear Molybdenum(II) Silylamido Cluster
Author(s) -
Morgenstern Uwe,
Wagner Christoph,
Merzweiler Kurt
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000236
Subject(s) - molybdenum , cluster (spacecraft) , crystallography , crystal structure , chemistry , rectangle , stereochemistry , inorganic chemistry , geometry , mathematics , computer science , programming language
Treatment of molybdenum(II) chloride with the difunctional silylamide Li 2 Me 2 Si(NPh) 2 led to the formation of the tetranuclear cluster compound [Mo 4 {Me 2 Si(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 μ 4 ‐κ‐ N,N,N ' ,N' ‐Me 2 Si(NPh) 2 2– ligands capping the Mo 4 rectangle and two μ 2 ‐Me 2 Si(NPh) 2 2– 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.