title: An unprecedented up-field shift in the 13C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)ammonium cation).
abstract: A large up-field shift (-763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru(2)(O(2)CCH(3))(4)Cl(2)] (TBA(+) = tetra(n-butyl)ammonium cation) in the (13)C NMR spectrum (CD(2)Cl(2) at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru(2)(5+) core to the ligands, in agreement with the large up-field shift.
authors.affiliation: Department of Chemistry, Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan. handam@riko.shimane-u.ac.jp.
authors.forename: Yuya
authors.initials: Y
authors.lastname: Hiraoka
authors.forename: Takahisa
authors.initials: T
authors.lastname: Ikeue
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sakiyama
authors.forename: Frédéric
authors.initials: F
authors.lastname: Guégan
authors.forename: Dominique
authors.initials: D
authors.lastname: Luneau
authors.forename: Béatrice
authors.initials: B
authors.lastname: Gillon
authors.forename: Ichiro
authors.initials: I
authors.lastname: Hiromitsu
authors.forename: Daisuke
authors.initials: D
authors.lastname: Yoshioka
authors.forename: Masahiro
authors.initials: M
authors.lastname: Mikuriya
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Kataoka
authors.forename: Makoto
authors.initials: M
authors.lastname: Handa