Triruthenium and triosmium carbonyl clusters containing chiral bidentate NHC-thiolate ligands derived from levamisole
Abstract
The trinuclear complexes [M3(µ-Cl)(µ-S∼CH)(CO)9] (M = Ru, Os; S∼CH = 1-ethylenethiolate-3-H-4-(S)-phenylimidazolin-2-ylidene) and [M3(µ-H)(µ-S∼CMe)(CO)9] (M = Ru, Os; S∼CMe = 1-ethylenethiolate-3-methyl-4-(S)-phenylimidazolin-2-ylidene) have been prepared by treating [Ru3(CO)12] and [Os3(CO)10(MeCN)2] with levamisolium chloride or [M3(µ-H)(CO)11]− with methyl levamisolium triflate, respectively. The chiral N-heterocyclic