201538-33-2Relevant academic research and scientific papers
Synthesis and Properties of Five-co-ordinate Complexes of Ruthenium and Osmium Containing the Bulky Phosphine 1,2-Bis(diisopropylphosphino)ethane (dippe). Crystal Structure of
Rios, Isaac de los,Jimenez-Tenorio, Manuel,Puerta, M. Carmen,Salcedo, Isabel,Valerga, Pedro
, p. 4619 - 4624 (2007/10/03)
The reaction of with NaBPh4 in MeOH afforded the red-brown five-co-ordinate complex 1.In analogous fashion, the complex cis- 2, prepared by reaction of 2 with dippe in refluxing 2-methoxyethanol, yielded the corresponding five-co-ordinate species 3 upon treatment with NaBPh4 in MeOH.Both complexes 1 and 3 react with PhSH furnishing the five-co-ordinate benzenethiolato derivatives 4 and 5 respectively.The crystal structure 4 has been determined, and shows that the complex cation adopts a distorted trigonal-bipyramidal geometry.With the exception of 4, which is rigid on the NMR time-scale, the other five-co-ordinate complexes are streochemically non-rigid, and in some instances undergo dynamic processes in solution which have been ascribed to interactions with the solvent.Whereas complexes 1 and 5 do not react with H2, addition of H2 to 3 yields the hydrogen complex trans- 6.The reaction of 4 with H2 afforded the known five-co-ordinate hydride complex , formed presumably by elimination of HSPh from an unstable thiolate-dihydrogen (or dihydride) complex, namely .
