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Zinc Complexes of Bis(imidazolylmethyl) Sulfides and Oxides The ligand types bis(benzimidazol‐2‐ylmethyl) sulfide (BIMS), bis(5‐methyl‐4‐imidazolylmethyl) sulfide (MIMS), bis[2‐(benzimidazol‐2‐yl)ethyl] sulfide (BIES), and bis(benzimidazol‐2‐ylmethyl) oxide (BIMO) were used to prepare zinc complexes. With ZnCl 2 , ZnBr 2 , and Zn(NO 3 ) 2 molecular species L · ZnX 2 were obtained in all cases. With Zn(ClO 4 ) 2 and Zn(BF 4 ) 2 the only isolable species were the ionic complexes [L 2 Zn]X 2 . Spectra and the structure determinations of the BIMS · ZnBr 2 and MIMS · Zn(NO 3 ) 2 complexes have revealed that the thioether sulfur atoms do not coordinate and that all complexes obtained are tetrahedral.
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Gregorzik et al. (1994) studied this question.
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