2-(Diphenylphosphinoyl)propanoate complexes: crystal structure of tris[2-(diphenylphosphinoyl)propanoato]vanadium(III)
作者:Ronald J. Cross、Louis J. Farrugia、Paul D. Newman、Robert D. Peacock、Diane Stirling
DOI:10.1039/dt9960001087
日期:——
complexes undergo a slow and reversible hydrogen–deuterium exchange reaction with deuteriomethanol, and the mechanism of this process is discussed. The structure of V(dpop)3·H2O·CH2Cl2, a rare example of a tris(dioxygen) chelate complex of vanadium(III), has been determined by single-crystal X-ray methods. There are two pairs of optical antipodes, Λ(R,R,R), and Δ(S,S,S), in the unit cell. The arrangement
2-(二苯基膦酰基)丙酸(Hdpop)已通过简单的一步步骤制备。阴离子表现为多用途的二齿配体,与V III,Cr III和Fe III的阳离子配位,生成M(dpop)3型的八面体三(螯合物)络合物,在Sn IV上生成SnR 3(dpop )和SnR 2(dpop)2(R = Me或Ph),然后生成Mo VI,得到顺式-[MoO 2(dpop)2 ]。另一方面,衍生物T1(dpop)似乎仅通过羧酸酯基团配位。该α钼和th配合物的dpop配体的氢与氘代甲醇发生缓慢且可逆的氢-氘交换反应,并讨论了该过程的机理。V(dpop)3 ·H 2 O·CH 2 Cl 2的结构(钒(III)的三(二氧)螯合物)的稀有例子,已经通过单晶X射线方法确定了。有两对光学对映体Λ(R,R,R)和Δ(S,S,S),在单位单元格中。金属上供体的排列是面部的,所有六元螯合环均采用船形。所有的O–V–O键角均接近90°,平均V–O(P)的键长为2