作者: H. Werner , K. Zenkert
DOI: 10.1016/0022-328X(88)80244-4
关键词: p-Cymene 、 Triphenylphosphine 、 Ligand 、 Chemistry 、 Trimethylphosphine 、 Iodide 、 Stereochemistry 、 Benzene 、 Nuclear magnetic resonance spectroscopy
摘要: Abstract An improved synthesis of [( p -Cym)OsCl 2 ] ( 1 ) using OsCl 3 ·3H O as the starting material is described. reacts with PMe , PPH and CO by Cl bridge cleavage to give (L) 2–4 ). Replacement chloride ligands in (L = iodide leads formation -Cym)OsI 5 (PMe 6 ), respectively. Both react NaBH 4 dihydrido complex -Cym)OsH 7 The ionic compounds Cym)OsX(L)PR ]PF 8–15 are prepared either from -Cym)OsX 1,5 or (CO) presence NH PF (PR 2,3,6 two-electron donor ligand L (CO, C H AgPF . Reduction 11,13 14 two equivalents NaC 10 8 produces neutral complexes -Cym)Os(L)PR 19–21 which very labile smoothly stable salts -Cym)OsH(L)Pr 22–24 bis(trimethylphosphine) (ArH)Os(OPMe (ArH -cymene, 25 ; benzene, 26 similarly, on tratment converted into hydrido [(ArH)OsH(PMe 27,28 Reaction NaH regenerates osmiun(O)