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Preparation and X‐ray Crystal Structure of the First Trimeric Nickel Thiosemicarbazone Complex: The First Example of Oligomerization by both NiONi and NiSNi Bridging
Author(s) -
Berkessel Albrecht,
Hermann Gesine,
Rauch OlgaTatjana,
Büchner Michael,
Jacobi Albrecht,
Huttner Gottfried
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961291203
Subject(s) - chemistry , nickel , semicarbazone , crystallography , monomer , crystal structure , stereochemistry , polymer chemistry , polymer , organic chemistry
Abstract Monomeric nickel(II) thiosemicarbazone complexes are an attractive new class of homogeneous catalysts for the activation of silanes. However, their activity is limited by the formation of inactive oligo‐ and polymers. The pathway by which aggregation takes place was elucidated by the preparation and X‐ray structural analysis of the first trimeric nickel(II) thiosemicarbazone complex. Aggregation was shown to proceed via NiONi and NiSNi bridging, giving rise to both fourfold planar and pseudooctahedral coordination of the nickel ions.