TY - JOUR
T1 - Solid state structure and fluxionality in solution of [H4Ru 4(CO)11L] (L=P(C6F5)3, PMe2Ph, P(OMe)3 and P(OEt)3)
T2 - Two different structures
AU - Ballinas-López, M. Gabriela
AU - García-Báez, Efrén V.
AU - Rosales-Hoz, María J.
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.
PY - 2003/11/15
Y1 - 2003/11/15
N2 - The monosubstituted [H4Ru4(CO)11L] derivatives where L=P(C6F5)3, PMe 2Ph, P(OMe)3 and P(OEt)3 (compounds 1 to 4, respectively) were synthesized, the crystal structure of 1, 2 and 4 were determined by X-ray diffraction (that of compound 3 had been determined previously but not fully reported so we obtained it again) and their dynamical behavior studied by 1H, 31P and 19F NMR. The structures of compounds 1, 3 and 4 show the common tetrahedral structure with four long (hydride bridged) and two short metal-metal bonds with the P-donor ligand transoid to an unbridged Ru-Ru bond. The structure of 2 is different since the M-M bonds to the Ru atom bonded to the phosphine, are all hydride-bridged. The variable temperature NMR studies of 1, 2 and 3 show dynamical behaviour similar to what had been reported for compound 4. However we propose that some of the structures involved in the equilibrium have the phosphorus substituent transoid to a bridged Ru-Ru bond.
AB - The monosubstituted [H4Ru4(CO)11L] derivatives where L=P(C6F5)3, PMe 2Ph, P(OMe)3 and P(OEt)3 (compounds 1 to 4, respectively) were synthesized, the crystal structure of 1, 2 and 4 were determined by X-ray diffraction (that of compound 3 had been determined previously but not fully reported so we obtained it again) and their dynamical behavior studied by 1H, 31P and 19F NMR. The structures of compounds 1, 3 and 4 show the common tetrahedral structure with four long (hydride bridged) and two short metal-metal bonds with the P-donor ligand transoid to an unbridged Ru-Ru bond. The structure of 2 is different since the M-M bonds to the Ru atom bonded to the phosphine, are all hydride-bridged. The variable temperature NMR studies of 1, 2 and 3 show dynamical behaviour similar to what had been reported for compound 4. However we propose that some of the structures involved in the equilibrium have the phosphorus substituent transoid to a bridged Ru-Ru bond.
KW - Polymetallic complexes
KW - Solid state structures
KW - Spectroscopic data
KW - Synthesis
UR - http://www.scopus.com/inward/record.url?scp=0742269842&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2003.08.009
DO - 10.1016/j.poly.2003.08.009
M3 - Artículo
SN - 0277-5387
VL - 22
SP - 3403
EP - 3411
JO - Polyhedron
JF - Polyhedron
IS - 25-26
ER -