Coordination of Phosphinoboranes R_2PB(C_6F_5)_2 to Platinum: An Alkene-Type Behavior

摘要

The paucity of boron-containing hetero-alkene complexes prompted us to explore the coordination of phosphinoboranes. The complexes {[R_2PB(C_6F_5)_2]Pt-(PPh_3)_2} (R = Cy, f-Bu) were obtained by ethylene displacement. Spectroscopic and crystallographic data indicated symmetric side-on coordination of the phosphi-noborane to Pt. Thorough analysis of the bonding situation by computational means revealed important similarities but also significant differences between the phosphinoborane and ethylene complexes.