Preparation and reactions of half-sandwich rhenium nitrosyl complexes containing a tethered amino ligand

Abstract

The aminorhenium nitrosyl complex [ η 5: η 1-C 5H 4CH 2CH 2N(CH 3) 2Re(NO)(CO)] +BF 4 − ( 5a), in which the ligating amino group was connected to the cyclopentadienyl ring, was prepared by reacting the η 5-C 5H 4CH 2CH 2N(CH 3) 2Re(NO)(CO)Br ( 4) with AgBF 4. Reaction of 5a with alkylmetal reagents provided the acyl complex η 5: η 1-C 5H 4CH 2CH 2N(CH 3) 2Re(NO)COR ( 8) (R  n-butyl, methyl, ethyl, isopropyl, benzyl). Solid state structures of 5b (X −  BPh 4 −) and the acetyl complex 8b were characterized by single-crystal X-ray analyses.