ja5055675_si_004.cif (25.11 kB)
Axially Chiral Allenyl Gold Complexes
dataset
posted on 2014-09-17, 00:00 authored by Alice Johnson, Antonio Laguna, M. Concepción GimenoUnprecedented allenyl gold complexes
have been achieved starting
from triphenylpropargylphosphonium
bromide. Two different coordination modes of the allene isomer of
triphenylphosphoniumpropargylide
to gold have been found depending on the gold oxidation state. Bromo-,
pentafluorophenyl-, and triphenylphosphine–gold(I) allenyl
complexes were prepared in which the α carbon coordinates to
the gold(I) center. A chiral pentafluorophenyl–gold(III) allenyl
complex with the gold atoms coordinated to the γ carbon was
also prepared. All the complexes have been structurally characterized
by X-ray diffraction showing the characteristic distances for a CCC
unit.