Rhodium Complexes of a New Structurally Adaptive PNN-Pincer
Type Ligand
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Abstract
A new PNN-pincer type ligand with
pyrazolyl and diphenylphosphine
flanking donors on a diarylamido anchor has been prepared. Its bis(<i>tert</i>-butyl isocyanide)rhodium(I) complex exhibits hemilabile
behavior in solution, and its solid-state structure verified the elusive
κ<sup>2</sup><i>P</i>,<i>N</i> coordination
mode for this type of
ligand. Reactions between (PNN)Rh(CN<sup>t</sup>Bu)<sub>2</sub> and
iodomethane afford both <i>fac</i>- and <i></i><i>cis</i>,<i>mer</i>-[(PNN)Rh(CN<sup>t</sup>Bu)<sub>2</sub>(Me)](I), which further showcases the structural versatility
of the ligand
