Synthesis of trans-[Re(NO) 2-(Ph 2PCH 2CH 2PPh 2) 2][BF 4], a formal dinitrosyl complex of rhenium(-I) and its protic denitrosylation. X-Ray structure of trans-[ReF(NO)-(Ph 2PCH 2CH 2PPh 2) 2][BF 4

Abstract

Treatment of a THF solution of trans-[ReCl(N 2)(dppe) 2] (dppe = Ph 2PCH 2CH 2PPh 2) with NO, in the presence of Tl[BF 4], forms trans-[Re(NO) 2(dppe) 2][BF 4], a rare formal 20-electron d 8-rhenium nitrosyl complex which, by reaction with HX (X = BF 4, Cl or HSO 4), gives trans-[ReF(NO)(dppe) 2][BF 4] ( 2) (the X-ray structure of which is reported) or trans-[ReX(NO)(dppe) 2]X ( 3, X = Cl or HSO 4), respectively, as well as nitrous oxide.