An FTIR and FT-Raman study of some novel organo-cadmium compounds

Infrared and Raman spectra are reported for the compounds (CH₃OCH₂CH₂CH₂)₂Cd (A), CH₃CdOCH₂CH₂SCH₃ (B) and Cd(OCH₂CH₂SCH₃)₂ (C). These spectra demonstrate that, as expected, A contains a linear CCdC moiety and C a linear OCdO moiety. It is shown that there is no intramolecular bonding between the O and Cd atoms in A or between the S and Cd atoms in B or C. Spectra of A have been recorded for all of gas (IR), liquid (Raman) and solid (IR) phases and show that there is no significant change in structure of this molecule on changing phase. A preliminary assessment suggests that none of these compounds are likely to be particularly useful precursors for the formation of cadmium-containing semiconductor materials by MOCVD (Metal Organic Chemical Vapour Deposition).