Synthesis, characterization and theoretical investigations of molybdenum carbonyl complexes with phosphorus/nitrogen/phosphorus ligand as bidentate and tridentate modes
作者:Seyma Goren Keskin、Julie M. Stanley、Alan H. Cowley
DOI:10.1016/j.poly.2017.09.037
日期:2017.12
Abstract Carbonyl complexes of molybdenum with the phosphorus/nitrogen/phosphorus ligand, PNP-Mo(CO)n, where n = 3, 4 and PNP is N,N-bis[2-(diphenylphosphino)ethyl]phenylamine have been synthesized and characterized by 1H, 31P1H} NMR, IR (ATR and solution state), Raman, X-ray diffraction, MS and elemental analysis. DFT calculations of the complexes were also performed. The PNP-Mo(CO)4 complex in which
摘要合成了具有磷/氮/磷配体PNP-Mo(CO)n的钼羰基配合物,其中n = 3、4,PNP为N,N-双[2-(二苯基膦基)乙基]苯胺。 1H,31P 1H} NMR,IR(ATR和溶液状态),拉曼光谱,X射线衍射,MS和元素分析。还进行了配合物的DFT计算。获得了结合方式为二齿顺膦的PNP-Mo(CO)4络合物,以及结合方式为三齿的PNP-Mo(CO)3的面和子午异构体。面部异构体和四羰基配合物已成功合成和纯化。但是,不可能分离出子午异构体。仅检测到子午异构体的少数晶体,并将其用于X射线分析。当面部异构体溶解在CH2Cl2或THF中时,发现它发生分解,从而生成四羰基络合物,子午异构体,Mo(0),为深色沉淀,以及一些残留在溶液中的面部异构体。还研究了面部异构体相对于子午异构体是优选结构的原因。