Synthesis, structure, and conformational dynamics of rhodium and iridium complexes of dimethylbis(2-pyridyl)borate

摘要

Rhodium(I) and Iridium(I) borate complexes of the structure [Me2B(2-PY)(2)]ML2 (L-2 = (tBuNC)(2), (CO)(2), (C2H4)(2), cod, dppe) were prepared and structurally characterized (cod = 1,5-cyclooctadiene; dppe = 1, 2-diphenylphosphinoethane). Each contains a boat-configured chelate ring that participates in a boat-to-boat ring flip. Computational evidence shows that the ring flip proceeds through a transition state that is near planarity about the chelate ring.