2-(Diphenyl­phosphinoylmeth­yl)pyrrole–2-(diphenyl­phosphinometh­yl)pyrrole (0.43/0.57) and tetra­chlorido­(5-diphenyl­phosphinometh­yl-2H-pyrrole-κ2 NP)titanium(IV)

摘要

The title phosphine oxide–phosphine, 0.43C17H16NOP·0.57C17H16NP, (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 TiCl4 leads to the formation of the title titanium(IV) complex, [TiCl4(C17H16NP)], (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.