Abstract
Molecular complexes of (CH 3) 2Cd with a series of alkyl derivatives containing different organic functional groups of the group VI elements have been formed, isolated and characterized in argon matrices and cryogenic thin films. For each system, a 1:1 complex was identified based on band positions and the product yield as a function of the concentrations of the two precursors in the reaction. For several systems, a 1:2 complex was observed as well at relatively high base/acid concentration ratios. Each complex was characterized by several perturbed vibrational modes, including the shifted CdC 2 antisymmetric stretching mode for all the complexes. Comparison of the band positions with those obtained in previous studies of related complexes indicates that (CH 3) 2Cd is a very weak Lewis acid, yet these complexes are still stable under cryogenic conditions whether in solid argon or in solid thin films.
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