title: 2-(Diphenylphosphinoylmethyl)pyrrole-2-(diphenylphosphinomethyl)pyrrole (0.43/0.57) and tetrachlorido(5-diphenylphosphinomethyl-2H-pyrrole-kappa(2)N,P)titanium(IV).
abstract: The title phosphine oxide-phosphine, 0.43C(17)H(16)NOP.0.57C(17)H(16)NP, (I)/(II), was obtained as a 0.861 (6):1.139 (6) cocrystallized mixture. Hydrogen bonding between the two constituents leads to the formation of 2:2 solid-state assemblies. Instead of forming the expected simple N,P-chelated system via loss of the N-bound H atom, reaction of 2-(diphenylphosphinomethyl)pyrrole, (II), with TiCl(4) leads to the formation of the title titanium(IV) complex, [TiCl(4)(C(17)H(16)NP)], (IV), containing a rearranged neutral ligand in which the N-bound H atom moves to one of the pyrrole C atoms, giving a partially unsaturated ring.
authors.affiliation: School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, England.
authors.forename: Lewis M
authors.initials: LM
authors.lastname: Broomfield
authors.forename: Manfred
authors.initials: M
authors.lastname: Bochmann
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Wright