Metal (Li, K, Sn-II and Hg-II) complexes of the 1,3-diazaallyl N(R)C(Ph)NC(Ph)=CR2(-) (R = SiMe3)

摘要

The new lithium 1,3-diazaallyl Li{N(R)C(Ph)NC(Ph)=CR2} 1 abbreviated as Li(L-L') has been prepared from Li(CR3)(thf)(2) and 2 equivalents of benzonitrile (R = SiMe3, thf = C4H8O). Compound 1 was shown to be a suitable precursor for the synthesis of the metal complexes SnCl(L-L') 2, Sn(L-L')(2) 3 and Hg(L-L')(2) 4 from the appropriate metal(II) chloride, while the reduction of 2 with potassium-graphite led in high yield to {K(mu-L-L')}(2) 5. Each of the compounds was fully characterised by multinuclear NMR spectroscopy, mass spectrometry and for 3-5 by X-ray diffraction. References: 22