An osmium tetrahydroborate complex with unusual dynamic behaviour: X-ray crystal structure of [Os(BH4)H3{P(c-C5H9)3}2](c-C5H9= cyclo-C5H9)
Abstract
In the complex [Os(BH4)H3{P(c-C5H9)3}2](c-C5H9= cyclo-C5H9), prepared quantitatively from the reaction of [OsH6{P(c-C5H9)3}2] with BH3·thf, (thf = tetrahydrofuran), the tetrahydroborate ligand is bound to the metal by two bridging hydrogen atoms which, at 90 °C, exchange rapidly only with the hydride ligands on osmium.