Reductive carbonylation route to Co(0) and Co(I) carbonyl complexes containing bridging, chelating and cleaved diphosphazanes. Structures of [Co(CO){P(OR)2(NHMe)}2{P(O)(OR)2}{P(H)(OR′)2}] (R=CH2CF3, R′=CH2CH3), [Co2(CO)2{μ-MeN{P(OR)2}2}3] (R=CH2CF3), and [Co(CO){η2-MeN{P(OR)2}2}2][CoCl3(OC4H8)] (R=Ph)
作者:Mani Ganesan、Setharampattu S Krishnamurthy、Munirathinam Nethaji
DOI:10.1016/s0022-328x(98)00741-4
日期:1998.11
presence of the diphosphazanes, MeNP(OR)2}2 (R=CH2CF3L1; Ph L2), the complexes [Co2(CO)2(μ-L1)3] 2, [Co2(CO)4(μ-L2)2] 3, and [Co(CO)(η2-L2)2][CoCl3(thf)] 4 are isolated. All the complexes have been characterised by elemental analyses and IR, 1H- and 31P-NMR spectroscopic data. The structures of the complexes 1, 2 and 4 are confirmed by single-crystal X-ray diffraction studies.
在一个大气压下,在MeN P(OR)2 } 2(R = CH 2 CF 3 L 1)和一氧化碳的存在下,NaBH 4在乙醇中还原CoCl 2产生不寻常的单核络合物[Co(CO) P(OR)2(NHMe)} 2 P(O)(OR)2 } P(H)(OR')2 }],(R = CH 2 CF 3,R'= CH 2 CH 3)1由PN键断裂和反式形成酯化。当在二磷氮烷,MeN P(OR)2 } 2(R = CH 2 CF 3 L 1; Ph L 2)存在下使用Zn作为还原剂进行还原羰基化时,络合物[Co 2(CO)2(μ -大号1)3 ] 2,[CO 2(CO)4(μ -大号2)2 ] 3,和[Co(CO)(η 2 -大号2)2分离出[] CoCl 3(thf)] 4。所有的配合物均已通过元素分析和IR,1 H-和31 P-NMR光谱数据进行了表征。该复合物的结构1,2和4是通过单晶X射线衍射研究所证实。