MODIFICATION OF THE REACTIVITY OF POLYHYDRIDES WITH LEWIS-ACIDS - SYNTHESIS AND REACTIVITY OF (IRH5[P(IC3H7)3]2)2CU(CF3SO3) - X-RAY CRYSTAL-STRUCTURE OF (IRH2(MECN)2[P(IC3H7)3]2)(BF4)

The reaction of IrH5(PiPr3)2 (1) with [Cu(MeCN)4]BF4 (2:1) in acetone yields [IrH2(MeCN)2(PiPr3)2]BF4 (2), characterized by spectroscopic methods and X-ray diffraction, in 46% yield. A similar reaction with CuCF3SO3 in CH2Cl2 yields [IrH5-(PiPr3)2]2CuCF3SO3 (3) in 91% yield. Compound 3 reacts rapidly with MeCN, D2, and cyclopentadiene at 25 °C in CH2Cl2 to give respectively a 1:1 mixture of 1 and 2. deuterated 3, and [CpIrH(PiPr3)2]SO3CF3 and shows a reduced relaxation time T1 for the hydrides, compared to 1. © 1990, American Chemical Society. All rights reserved.