Group 12 metals, trifluoromethyl derivatives

What reference to Tables I—III does not indicate, however, is any indication of a compound containing more than two trifluoromethyl groups attached to a metal atom, or many examples of early transition metal trifluoromethyl derivatives. The early results of a number of synthetic techniques designed to ultimately result in more general routes to the preparation of trifluoromethylated transition metal compounds are presented below. 

Although these methods did result in the preparation of a number of then new compounds, they are inherently limited by the fact that the amount of material afforded by a typical reaction is often only in the tens of milligrams range, which is ample for product characterization but insufficient for a reasonably thorough examination of the chemistry of the new compounds. Additionally, while metal atom reactions have been successfully utilized on the elements of groups 10-12 (see below), the synthesis, isolation, and characterization of trifluoromethyl derivatives of the elements from earlier periods of the periodic table is yet to be established. 

The second set of experiments was focused upon whether the reagent could be employed to generate trifluoromethyl derivatives of representative transition metal coordination complexes, and for this study the group 10 dihalide diphosphines were selected as typical substrates (32). These results,... 

G. Trifluoromethyl Derivatives of Group 11 Metals 1. Copper Trifluoromethyl Compounds... 

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