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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Triamidoamine-supported zirconium complexes in the catalytic dehydrocoupling of 1,2-bisphosphinobenzene and -ethane
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Triamidoamine-supported zirconium complexes in the catalytic dehydrocoupling of 1,2-bisphosphinobenzene and -ethane

机译：1,2-双膦基苯与-乙烷催化脱氢偶联中的三酰胺基负载的锆配合物

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摘要

The readily prepared zirconium complex, [K-5-(Me3SiNCH2CH2)(2)NCH2CH2NSiMe2CH2]Zr (1), is an effective precatalyst in the dehydrocoupling of o-bisphosphinobenzene and 1,2-bisphosphinoethane to the known intercalated products. The phosphanido complex (N3N)Zr[K-2-1,2-PH(PH2)C6H4] (N3N=N(CH2CH2NSiMe3)(3)(3-)), 2 was prepared independently by reaction of 1 with o-bisphosphinobenzene. Complex 2 was identified as an intermediate zirconium complex in the catalytic dehydrocoupling of o-bisphosphinobenzene. Likewise, previously reported (N3N)Zr(PHCH2CH2PH2) (3) was identified in the catalytic dehydrocoupling of 1,2-bisphosphinoethane. Investigation of the thermal decomposition of 2 and the reactivity of 2 with stoichiometric o-bisphosphinobenzene suggest that the catalysis proceeds via sequential P-P bond forming steps. The solid state structure of 2, which features a six-coordinate (N3N)Zr-complex, is reported.
机译：易于制备的锆配合物[K-5-（Me3SiNCH2CH2）（2）NCH2CH2NSiMe2CH2] Zr（1）是邻双膦基苯和1,2-双膦基乙烷脱氢偶联至已知插层产物的有效预催化剂。膦酸酯基配合物（N3N）Zr [K-2-1,2-PH（PH2）C6H4]（N3N = N（CH2CH2NSiMe3）（3）（3-）），2通过1与邻双膦基苯的反应独立制备。络合物2被鉴定为邻双膦基苯催化脱氢偶联中的中间体锆络合物。同样，先前报道的（N3N）Zr（PHCH2CH2PH2）（3）在1,2-双膦基乙烷的催化脱氢偶联反应中得到确认。对2的热分解和2与化学计量的邻双膦基苯的反应性的研究表明，催化是通过顺序的P-P键形成步骤进行的。据报道，固态结构2具有六坐标（N3N）Zr-络合物。

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