Tricarbonylrhenium(I) Complexes with Thiosemicarbazone Derivatives of 2-Acetylpyridine and 2-Pyridine Formamide Showing Two Unusual Coordination Modes of Tridentate Thiosemicarbazone Ligands
- 17 February 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 43 (6) , 1834-1836
- https://doi.org/10.1021/ic035367u
Abstract
[NEt4](2)[Re(CO)(3)Br-3] reacts with 2-acetylpyridine phenylthiosemicarbazone (HL1) and 2-pyridine formamide thiosemicarbazone (HL2) under formation of air-stable, neutral rhenium(l) complexes of the compositions [Re(CO)(3)(L-1-N,N,S)] and [Re(CO)(3)Br(HL2 -N,N)]. Spectroscopic studies and X-ray crystallography show that the potentially tridentate thiosemicarbazones adopt unusual coordination modes. Whereas HL1 deprotonates and binds to the metal in a nonplanar fashion, HL2 acts as neutral N,N donor ligand. The bond lengths inside the chelate rings are almost uninfluenced by the overall bonding situation.This publication has 12 references indexed in Scilit:
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