Stereoselective Alkylation of Terminal Sulphide in trans-Mo(S)2(syn-Me8[16]aneS4) by Alkyl Halides. Preparation and Crystal Structure of trans-{Mo(SR)(S)(syn-Me8[16]aneS4)}+(R = Me, PhCH2) Containing Three Distinctive Types of Sulfur Donors
摘要:
Facile monoalkylation of trans-Mo(S)2(syn-Me8[16]aneS4) with MeI and PhCH2Br proceeds stereoselectively at the terminal sulphide located on the uncongested axial site to give trans-{Mo(SR)(S)(syn-Me8[16]aneS4)}+ (R = Me, CH2Ph) containing three different types of sulfur donors; thiolato, terminal sulphido, and thioether ligands; the structure of the methyl thiolate complex was elucidated by an X-ray diffraction study.