Preparation and characterisation of rhenium(I) and platinum(IV) complexes of 2,6-bis(pyrazol-1-lylmethyl)pyridine and 2,6-bis(3,5-dimethylpyrazol-1-ylmethyl)pyridine. Crystal structure of fac-[Rel(CO)3(BMPz)]
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- 作者：Orrell ; Keith G. ; Osborne ; Anthony G. ; da Silva ; Mateus Webba ; Hursthouse ; Michael B. ; Coles ; Simon J.
- 关键词：rhenium ; platinum ; pyridine ; pyrazol-1-yl
- 刊名：Polyhedron
- 出版年：1997
- 出版时间：1997
- 年：1997
- 卷：16
- 期：17
- 页码：3003-3012
- 全文大小：655 K
文摘
Under mild conditions [ReX(CO)3(THF)2] reacts with pyrazolylmethylpyridines to form the complexes fac-[ReX(CO)3(BPz)] and fac-[ReX(CO)3(BMPz)] (X = Cl, Br, or I; BPz = 2,6-bis(pyrazol-1-ylmethyl)pyridine; BMPz = 2,6-bis(3,5-dimethylpyrazol-1-ylmethyl)pyridine) that involve BPz and BMPz acting as non-fluxional bidentate chelate ligands. Under more severe reaction conditions fac-[ReX(CO)3(BPz)] is converted to fac-[Re(CO)3(BPz)]X (X = Cl, Br, or I). Trimethylplatinum(IV)iodide reacts with BPz to form fac-[PtMe3(BPz)]I. The crystal structure of fac-[ReI(CO)3(BMPz)] confirms the bidentate chelate bonding of BMPz with a N--Re--N angle of 85.8°.