The stability constants and structures of the complexes of Co2+, Cu2+, Zn2+, Ni2+ and Cd2+ with 2-methyl-1-vinylimidazole in aqueous solution have been determined by potentiometric and spectrophotometric methods. The stability of the compounds depended much on the presence of the electron-attracting vinyl substituent contributing to the πM→L back bonding. Further, nitrato complexes of cobalt(II) and copper(II) with 2-methyl-1-vinylimidazole (L) of general formulae [CoL3(H2O)(NO3)]NO31, [CoL2(NO3)2] 2, [CuL4(NO3)2]·2H2O 3 and [CuL2(NO3)2] 4 have been prepared in the solid state. Full single-crystal X-ray analyses have been accomplished for compounds 1 and 4 which enabled the determination of angles and bond lengths.The compounds were identified on the basis of elemental analyses, EPR spectroscopy, IR, FIR and VIS-NIR absorption spectra and magnetochemical data. The immediate environment of the central ions is described by a distorted tetragonal bipyramid.
You have access to this article
Please wait while we load your content...
Something went wrong. Try again?