Some chemistry of Re-2(mu-H)(mu-C(2)Ph)(CO)(8): X-ray structures of Re-2(mu-H)(mu-C(2)Ph)(CO)(6)(PMe(3))(2), Re-2{mu-Au(PPh(3))}(mu-C(2)Ph)(CO)(8), Re-2(mu-X)(mu-dppm)(mu-C(2)Ph)(CO)(6) [X=H,Br and Au(PPh(3))] and Re-2(mu-Br)(2)(mu-dppm)(CO)(6)

MI Bruce, PJ Low, BW Skelton, AH White

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Abstract

Reactions of Re-2(mu-H)(mu-C(2)Ph)(CO)(7)(NCMe) (2) with 1,8-diazabicyclo[5.4.0]undec-1-ene (dbu), CN(t)Bu or PMe(3) have given Re-2(mu-H)(mu-C(2)Ph)(CO)(8-n)(L)(n) [L = dbu, n = 1, L = CN(t)Bu (4) or PMe(3), n = 2]; with dppm, Re-2(mu-H)(mu-dppm)(mu-C(2)Ph)(CO)(6) (6) was obtained. Halogenation of 6 has given Re-2(mu-X)(mu-dppm)(mu-C(2)Ph)(CO)(6) [X = I, Br (8)] and Re-2(mu-Br)(2)(mu-dppm)(CO)(6) (9). Cluster AuRe2(mu-C(2)Ph)(CO)(8)(PPh(3)) (10) was obtained as a minor product from a reaction between 2 and Na[Co(CO)(4)]/AuCl(PPh(3)). Replacement of the H in 6 by Au(PPh(3)) was achieved by reaction with AuMe(PPh(3)) to give AuRe2(mu-dppm)(mu-C(2)Ph)(CO)(6)(PPh(3)) (11); in contrast, treatment of 6 with LiMe, followed by addition of AuCl(PPh(3)) or [{Au(PPh(3))}O-3][BF4], gave Re-2(mu-H){mu-(PPh(2))(2)CH[Au(PPh(3))]}(mu-C(2)Ph)(CO)(6) (12), in which the mu-dppm ligand has been metallated. With {Rh(mu-Cl)(cod)}(2), the product contains an Re2Rh cluster capped by the CH(PPh(2))(2) ligand. The X-ray structures of 4, 6 and 8-11 are reported.

Original languageEnglish
Pages (from-to)65-79
Number of pages15
JournalJournal of Organometallic Chemistry
Volume515
Issue number1-2
DOIs
Publication statusPublished - 31 May 1996

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