Synthesis and coordinating properties of the facultative Sb2O- and As2O-donor ligands O{(CH2)2ER2}2 (E=Sb or As; R=Ph or Me)
作者:Martin F. Davis、Marek Jura、William Levason、Gillian Reid、Michael Webster
DOI:10.1016/j.jorganchem.2007.08.034
日期:2007.12
considerably less stable with respect to C–O bond fission under some conditions than the other ligands. Using O(CH2CH2Cl)2 leads only to partial substitution by the SbPh2− or AsPh2− nucleophile. These ligands behave as bidentate chelating Sb2- or As2-donors in the distorted tetrahedral [M(L–L)2]BF4 (M = Cu or Ag; L–L = 1–4) on the basis of solution 1H and 63Cu NMR spectroscopic studies, mass spectrometry
具有柔性骨架的新型混合Sb 2 O-供体配体O (CH 2)2 SbR 2 } 2(R = Ph,1 ; R = Me,2)以高收率制备为对空气敏感的油。在溶液中含有0.5摩尔当量的O(CH 2 CH 2 Br)2的NaSbR 2。类似地从LiAsPh 2或NaAsMe获得As 2 O供体类似物O (CH 2)2 AsR 2 } 2(R = Ph,3 ; R = Me,4)。分别为2和O(CH 2 CH 2 Br)2,尽管在某些条件下,配体4相对于C–O键裂变似乎不如其他配体稳定。使用O(CH 2 CH 2 Cl)的2根引线仅部分取代由灰飞虱2 -或ASPH 2 -亲核体。这些配位体表现为二齿螯合的Sb 2 -或As 2个-donors在扭曲的四面体[M(L-L)2 ] BF 4(M = Cu或Ag; L-L = 1 - 4)的解决方案的基础上1 H和63 Cu NMR光谱研究,质谱