Mercury(II) complexes of stabilized phosphine–phosphonium ylide derived from bis(diphenylphosphino)methane: Synthesis, spectra and crystal structures
作者:Mothi Mohamed Ebrahim、Krishnaswamy Panchanatheswaran、Antonia Neels、Helen Stoeckli-Evans
DOI:10.1016/j.jorganchem.2008.11.051
日期:2009.3
The reaction of a mixed phosphine–phosphonium ylide, PPh2CH2PPh2C(H)C(O)Ph with mercury(II) halides in methanol under mild conditions yielded the P, C-chelated complexes, [HgX2(PPh2CH2PPh2C(H)C(O)Ph)] where X = Cl (2), Br (3), I (4). Single crystal X-ray diffraction studies reveal the presence of mononuclear complexes containing Hg atom in a distorted tetrahedral environment and long Hg–Cylide bond
在甲醇中,磷化氢-磷鎓内鎓盐PPh 2 CH 2 PPh 2 C(H)C(O)Ph与卤化汞(II)在温和条件下的反应生成了P,C螯合的配合物[HgX 2(P Ph 2 CH 2 PPh 2 C(H)C(O)Ph)],其中X = Cl(2),Br(3),I(4)。单晶X射线衍射研究表明,在扭曲的四面体环境和长的Hg-C ylide键下,含有Hg原子的单核络合物的存在。存在于4的不对称单元中的两个独立分子中的五元螯合环采用“信封”和“扭曲”构型。光谱研究还表明,Hg-C键较弱。另外,还讨论了游离叶立德(1)的分子结构。