Electron spin-echo envelope modulation spectral properties of amidate nitrogen coordinated to oxovanadium(IV) ion

Fukui K; Fujii H; Ohya-Nishiguchi H; Kamada H

Chemistry Letters, Vol.29, No.3, 198-199, 2000

Fukui K, Fujii H, Ohya-Nishiguchi H, Kamada H

Electron spin-echo envelope modulation (ESEEM) measurements have been performed for a VO2+-amidate complex, [(VO)-O-IV(hybeb)](2-) (H(4)hybeb = 1,2-bis(2-hydroxybenzamido)benzene). ESEEM spectroscopic properties of the amidate N-14 nucleus have been characterized for the first time (\ A(iso)\ = 6.70 MHz; e(2)qQ/h = 2.5 MHz, eta = 0.04) to provide a basis for the studies of vanadium-peptide interactions. The electronic structure of the amidate nitrogen is discussed.