216979-84-9Relevant academic research and scientific papers
Zinc thiolate complexes with chelating nitrogen ligands
Burth,Vahrenkamp
, p. 193 - 199 (2008/10/08)
The thiolates SPh-, SCH2Ph- and SCH2CH2Ph- were combined with polydentate nitrogen donor ligands in monomeric zinc complexes. N-substituted bis(benzimidazolylmethyl)sulfides (R-BIMS) yielded the complexes (R-BIMS)Zn(SR)2 (1-3) in which the central thioether sulfur does not coordinate. This holds also for the o-hydroxymethyl-thiophenolate complex (4). 2,9-Dimethylphenanthroline (neocuproin, NEO) produced compounds (NEO)Zn(SR)2 (5). Bis(dimethylpyrazolyl-N-ethyl)amine (PEA) led to (PEA)Zn(SPh)2 (6) in which only one pyrazole nitrogen and the central amine nitrogen are coordinated. 2-Mercaptomethylpyridine (HMMP) formed the bis-ligand complex (MMP)2Zn (7). Six structure determinations have shown that all complexes are characterized by a tetrahedral ZnN2S2 coordination, irrespective of the ring size (5,6, 8) which is thereby enforced on the chelate ligand, even at the expense of unused ligand donor atoms.
