Zq. Wang et al., THE PARALLEL BETWEEN PHENYL-INITIATED C-C COUPLING REACTIONS IN DIRHODIUM COMPLEXES AND THOSE CATALYZED BY RHODIUM PARTICLES, Journal of the Chemical Society, Chemical Communications, (10), 1995, pp. 1089-1091
Decomposition of [{(C(5)Me(5))Rh(mu-CH2)}(2)(Ph)(CO)](+) (homogeneousl
y, under CO) in solution gives PhCH=CH2, PhMe and C6H6, while phenyl (
from Phl) reacts with surface methylene (from CO + H-2) heterogeneousl
y over rhodium metal to give PhEt, PhMe and C6H6; it is proposed that
the two reactions are also related mechanistically.