2-(Diphenylphosphinoylmethyl)pyrrole–2-(diphenylphosphinomethyl)pyrrole (0.43/0.57) and tetrachlorido(5-diphenylphosphinomethyl-2H-pyrrole-κ2N,P)titanium(IV)
摘要:
The title phosphine oxide-phosphine, 0.43C(17)H(16)NOP center dot-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 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.