title: [Li(CH(Me)P(Ph)2(NCO2Me))2(THF)2]: crystal, solution, and calculated structure of a N-delocalized lithium phosphazene.
abstract: The first crystal structure of the lithium complex of a P-alkyl-P,P-diphenyl(N-methoxycarbonyl)phosphazene has been characterized. It is dimeric, with the anion chelating the lithium in an unusual six-membered ring. A monomer-dimer equilibrium has been identified in THF solution. Ab initio calculations indicated that the six-membered ring is electronically favored over an alternative Li-C-P-N four-membered ring.
authors.affiliation: Area de Química Orgánica, Universidad de Almería, Carretera de Sacramento s/n, 04120, Almería, Spain.
authors.forename: Ignacio
authors.initials: I
authors.lastname: Fernandez
authors.forename: Julia Maria
authors.initials: JM
authors.lastname: Alvarez Gutierrez
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Kocher
authors.forename: Dirk
authors.initials: D
authors.lastname: Leusser
authors.forename: Dietmar
authors.initials: D
authors.lastname: Stalke
authors.forename: Javier
authors.initials: J
authors.lastname: Gonzalez
authors.forename: Fernando
authors.initials: F
authors.lastname: Lopez Ortiz