Hb. Bai et Bs. Ault, INFRARED MATRIX-ISOLATION AND CRYOGENIC THIN-FILM SPECTROSCOPIC STUDYOF MOLECULAR-COMPLEXES OF DIMETHYLCADMIUM WITH GROUP-VI ORGANICS, Journal of molecular structure, 384(2-3), 1996, pp. 191-202
Molecular complexes of (CH3)(2)Cd with a series of alkyl derivatives c
ontaining different organic functional groups of the group VI elements
have been formed, isolated and characterized in argon matrices and cr
yogenic thin films. For each system, a 1:1 complex was identified base
d on band positions and the product yield as a function of the concent
rations of the two precursors in the reaction. For several systems, a
1:2 complex was observed as well at relatively high base/acid concentr
ation ratios. Each complex was characterized by several perturbed vibr
ational modes, including the shifted CdC2 antisymmetric stretching mod
e for all the complexes. Comparison of the band positions with those o
btained in previous studies of related complexes indicates that (CH3)(
2)Cd is a very weak Lewis acid, yet these complexes are still stable u
nder cryogenic conditions whether in solid argon or in solid thin film
s.