TY - JOUR
T1 - Chelating phosphane-boranes as hemilabile ligands - Synthesis of [Mn(CO)3(η2-H3B·dppin)][BArF4 ] and [Mn(CO)4(η1-H3B· dppm)][BArF4]
AU - Merle, N.
AU - Frost, C.G.
AU - Kociok-Kohn, Gabriele
AU - Willis, Michael C
AU - Weller, A.S.
PY - 2006/10/16
Y1 - 2006/10/16
N2 - Manganese complexes bearing the chelating phosphane–borane ligand H3B·dppm [dppm = bis(diphenylphosphanyl)methane] have been prepared. Addition of H3B·dppm to Mn(CO)5Br using Na[BArF4] as a halide-abstracting reagent affords [Mn(CO)3(η2-H3B·dppm)][BArF4] (1). This reacts with CO to open the bidentate borane to afford [Mn(CO)4(η1-H3B·dppm)][BArF4] (2) in which the borane is now bound in a monodentate manner. The CO addition is reversible, and placing 2 under vacuum (hours) regenerates 1 quantitatively, demonstrating that the chelating phosphane–boranes can act as hemilabile ligands. The complexes 1 and 2 have been fully characterised by NMR spectroscopy and X-ray crystallography.
AB - Manganese complexes bearing the chelating phosphane–borane ligand H3B·dppm [dppm = bis(diphenylphosphanyl)methane] have been prepared. Addition of H3B·dppm to Mn(CO)5Br using Na[BArF4] as a halide-abstracting reagent affords [Mn(CO)3(η2-H3B·dppm)][BArF4] (1). This reacts with CO to open the bidentate borane to afford [Mn(CO)4(η1-H3B·dppm)][BArF4] (2) in which the borane is now bound in a monodentate manner. The CO addition is reversible, and placing 2 under vacuum (hours) regenerates 1 quantitatively, demonstrating that the chelating phosphane–boranes can act as hemilabile ligands. The complexes 1 and 2 have been fully characterised by NMR spectroscopy and X-ray crystallography.
UR - http://www.scopus.com/inward/record.url?scp=33750289109&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1002/ejic.200600526
U2 - 10.1002/ejic.200600526
DO - 10.1002/ejic.200600526
M3 - Article
AN - SCOPUS:33750289109
SN - 1434-1948
VL - 2006
SP - 4068
EP - 4073
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 20
ER -