title: Effects of a nonplanar porphyrin rings on the spin-spin interactions in low-spin ferric porphyrin radical cationst.
abstract: Low-spin ferric porphyrin radical cations formed by the oxidation of chloro(meso-tetraalkylporphyrinato)iron(III) followed by the addition of bulky 2-methylimidazole show antiferromagnetic coupling, which is interpreted in terms of the interaction between porphyrin a2u and iron d(xy), orbitals caused by the S4 ruffling of the porphyrin core.
authors.affiliation: Department of Chemistry, School of Medicine, Toho University, Ota-ku, Tokyo 143-8540, Japan.
authors.forename: Takahisa
authors.initials: T
authors.lastname: Ikeue
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Ohgoa
authors.forename: Mikio
authors.initials: M
authors.lastname: Nakamura