Mo– and W–N2 and –CO complexes with novel mixed P/N ligands: Structural properties and implications to synthetic nitrogen fixation
作者:Gerald C. Stephan、Christian Näther、Chinnappan Sivasankar、Felix Tuczek
DOI:10.1016/j.ica.2007.06.046
日期:2008.3
group and one or more N -(diphenylphosphinomethyl)amine functions have been prepared and employed for the synthesis of Mo(0) and W(0) carbonyl and dinitrogen complexes. For comparison coordination of the literature-known ligand N , N -bis(diphenylphosphinomethyl)-methylamine (PNP, 1 ) to such systems has been investigated as well. Two new ligands are N , N -bis(diphenylphosphinomethyl)-2-aminopyridine (pyNP
摘要制备了四个具有吡啶或噻唑基团和一个或多个N-(二苯基膦基甲基)胺官能团的新配体,并将其用于合成Mo(0)和W(0)羰基及二氮配合物。为了比较文献已知的配体N,还研究了N-双(二苯基膦基甲基)-甲胺(PNP,1)与这种系统的配合。两个新的配体是N,N-双(二苯基膦甲基)-2-氨基吡啶(pyNP 2,2)和N,N′-双(二苯基膦甲基)-2,6-二氨基吡啶(PpyP,3)。在第三个新的配体N-二苯基膦基甲基-2-氨基噻唑(thiazNP,4)中,吡啶基被噻唑取代。最后,合成了五齿配体N,N,N',N'-四(二苯基膦甲基)-2,6-二氨基吡啶(pyN 2 P 4,5)。配体2的配位,基于三种钼羰基配合物[Mo(CO)3(NCCH 3)(pyNP 2)](6),[Mo(CO)4(PpyP)]( 7)和[Mo(CO)4(thiazNP)](8),均在结构上进行了表征。此外,采用配体1和2,两个二氮配合物分别为[W(N