title: Experimental and theoretical studies on the conjugation of the phosphorus-carbon double bond with a cyclopropyl group.
abstract: X-ray structural analysis for (Z)-2-cyclopropyl-1-(2,4,6-tri-tert-butylphenyl)-1-phosphaethene (2) was performed to confirm that the cyclopropyl group largely interacts with the P[double bond]C group compared with its carbon analogue, vinylcyclopropane (1). Absorption spectrum and redox properties of 2 were also studied to prove the conjugation. Theoretical investigation for nonsubstituted derivatives (4) indicated conjugative interaction between the P[double bond]C and cyclopropyl groups and revealed the physicochemical similarities between the P=C and C[double bond]C.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Kimura
authors.forename: Shigekazu
authors.initials: S
authors.lastname: Ito
authors.forename: Masaaki
authors.initials: M
authors.lastname: Yoshifuji
authors.forename: Tamás
authors.initials: T
authors.lastname: Veszprémi