title: A Five-Membered Ring with Three Negative Charges and Solvent-Free Lithium Counterions.
abstract: Remarkably short distances to the ring plane are shown by the eta(5)-bound lithium ions in the first compound with a triply negatively charged five-membered ring, 1, which was obtained by reduction of 2 with lithium. R=CH(SiMe(3))(2), Dur=2,3,5,6-tetramethylphenyl.
authors.affiliation: Fachbereich Chemie der Universität, D-35032 Marburg (Germany).
authors.initials: D
authors.lastname: Scheschkewitz
authors.initials: M
authors.lastname: Menzel
authors.initials: M
authors.lastname: Hofmann
authors.initials: Pv
authors.lastname: Schleyer
authors.initials: G
authors.lastname: Geiseler
authors.initials: W
authors.lastname: Massa
authors.initials: K
authors.lastname: Harms
authors.initials: A
authors.lastname: Berndt