Abstract
The isocyanide complexes ReBr(CO) 4(CNR) ( 1a, R = Pr; 1b, R = iPr; 1c, R = Ph) are synthesized by reaction of ReBr(CO) 5 with phosphinimines via a deoxygenation mechanism. Complexes 1a and 1b react with an additional equivalent of Ph 3PNR to form the diisocyanide complexes ReBr(CO) 3(CNR) 2 ( 2a, R = Pr; 2b, R = iPr). The complex 1c reacts with isopropylamine and propylamine in ether to afford the amidinium (carbene) complexes ReBr(CO) 4{C(NHPh)(NHR)} ( 4a, R = iPr; 4b, R = Pr). However, 1c does not react with tert-butylamine under the same reaction conditions. The reaction of 4a with PPh 3 leads to the formation of the complexes ReBr(CO) 3(PPh 3){C(NHPh)(NHCHMe 2)} ( 5). Complexes 4a and 5 were crystallographically characterized. 4a: P2 1/ c, a = 15.5557(15), b = 6.5831(6), c = 17.4149(9) Å, β = 107.829(6)°, V = 1697.72(24) Å 3, Z = 4, R = 0.0 31, c = 10.1732(17) Å, α = 92.978(13)°, β = 119.612(8)°, γ = 91.627(10)°, V= 3034.1(8) Å 3, Z = 4, R = 0.060, R w = 0.079 for 8349 reflections with F o ⩾ 2σ( F o).
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call