title: Oxidation products of VO(T(m-NO2)PP): EPR and cyclic voltammetric studies.
abstract: The EPR study of VO(T(m-NO2)PP)+ at 77 K is reported. A triplet state spectrum of VO(T(m-NO2)PP)(+) at 77 K is obtained. The ZFS parameters are obtained from the computer simulation. An inter-electron distance of 3.57+/-0.05 A between the two unpaired electrons is obtained. This is attributed to an a(2u) ground state of the porphyrin. Also, room temperature EPR of the pre-oxidized species of VOTPP with SbCl5 are reported. The effect on the oxidation potentials due to substitution is also reported.
authors.affiliation: Department of Chemistry, North-Eastern Hill University, Umshing, Mawkynroh, 793 022, Meghalaya, Shillong, India.
authors.forename: A Tomba
authors.initials: AT
authors.lastname: Singh
authors.forename: A
authors.initials: A
authors.lastname: Lemtur
mesh_terms: D004563:Electrochemistry; D004578:Electron Spin Resonance Spectroscopy; D008665:Metalloporphyrins / Q000737:chemistry*; D010084:Oxidation-Reduction; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D014638:Vanadates / Q000737:chemistry*
chemical_list: D008665:Metalloporphyrins; D014638:Vanadates