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Inne
Complexes of some transition metal ions with 2-methyl-1-vinylimidazole in aqueous solution and the solid state.
Autorzy
Rok wydania
2000
Czasopismo
Journal of the Chemical Society, Dalton Transactions
Strony
1095-1100
DOI
10.1039/A908718D
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
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.
Adres publiczny
DOI https://doi.org/10.1039/A908718D
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