1,3-Intramolecular metal shifts in pentacarbonyltungsten(0) complexes of 2,4-dithiapentane, 2,4-diselenapentane, and 2-selena-4-thiapentane
Abstract
The mononuclear complexes W(CO)5L (L = MeSCH2Sme, MeSeCH2SeMe, and MeSCH2SeMe) possess a noval floxional character which from dynamic n.m.r. studies may be interpreted as intramolecular 1,3-metal jumps between ligand atoms; and indication of the relative strengths of the S → W and Se → W bonds is obtained from these studies.