TY - JOUR
T1 - Two types of tetrasubstitution in [H4Ru4(CO)12]
T2 - Spectroscopic characterization and crystal structure determination of [H4Ru4(CO)8(PMe2Ph)4] and [H2Ru4(CO)9(PMe2Ph)4]
AU - Ballinas-López, M. Gabriela
AU - Rosales-Hoz, María J.
AU - García-Báez, Efrén V.
N1 - Funding Information:
M.G.B.L. thanks Conacyt for the award of a grant. Thanks are given to Marco Antonio Leyva and Vı́ctor M. González for their assistance with the X-ray structures and NMR spectra, respectively. Thanks are also given to Dr. Susana Rojas-Lima from the Universidad Autonoma del Estado de Hidalgo for her help in obtaining the X-ray data.
PY - 2003/6/1
Y1 - 2003/6/1
N2 - Two tetrasubstituted tetranuclear ruthenium clusters containing dimethylphenylphosphine [H4Ru4(CO)8(PMe2Ph)4] and [H2Ru4 (CO)9(PMe2Ph)4] were prepared and characterized spectroscopically as well as by X-ray crystallography. Both compounds show a structure based on the usual 60-electron tetrahedral framework with each ruthenium atom being bonded to one phosphine ligand. In the case of the nonacarbonyl derivative, one of the ruthenium atoms has one terminal carbonyl group and is also bonded to two semibridging carbonyl groups; two other metal-metal bonds are bridged by the hydride groups. In the case of the octacarbonyl compound all the ruthenium atoms are bonded to two terminal carbonyls and to two bridging hydrides. NMR spectroscopical information of [H4Ru4(CO)8(PMe2Ph)4] suggests the presence of two isomers in solution which we propose to have D2d and Cs, symmetries. The observation of the NMR properties gives some observations about conditions that favour coupling between substituents in different ruthenium atoms.
AB - Two tetrasubstituted tetranuclear ruthenium clusters containing dimethylphenylphosphine [H4Ru4(CO)8(PMe2Ph)4] and [H2Ru4 (CO)9(PMe2Ph)4] were prepared and characterized spectroscopically as well as by X-ray crystallography. Both compounds show a structure based on the usual 60-electron tetrahedral framework with each ruthenium atom being bonded to one phosphine ligand. In the case of the nonacarbonyl derivative, one of the ruthenium atoms has one terminal carbonyl group and is also bonded to two semibridging carbonyl groups; two other metal-metal bonds are bridged by the hydride groups. In the case of the octacarbonyl compound all the ruthenium atoms are bonded to two terminal carbonyls and to two bridging hydrides. NMR spectroscopical information of [H4Ru4(CO)8(PMe2Ph)4] suggests the presence of two isomers in solution which we propose to have D2d and Cs, symmetries. The observation of the NMR properties gives some observations about conditions that favour coupling between substituents in different ruthenium atoms.
KW - Crystal structures
KW - Dimethylphenylphosphine
KW - NMR characterization
KW - Tetraruthenium clusters
UR - http://www.scopus.com/inward/record.url?scp=0038744248&partnerID=8YFLogxK
U2 - 10.1016/S1387-7003(03)00069-8
DO - 10.1016/S1387-7003(03)00069-8
M3 - Artículo
SN - 1387-7003
VL - 6
SP - 675
EP - 679
JO - Inorganic Chemistry Communications
JF - Inorganic Chemistry Communications
IS - 6
ER -