Ionic liquid promotes N2 coordination to titanocene(III) monochloride

Coordination of N-2 to [(Cp2TiCl)(2)] in a non-coordinating ionic liquid, Pyr(4)FAP, was studied by UV-vis/NIR and EPR spectroscopies. [(Cp2TiCl)(2)] is in equilibrium between monomeric [Cp2TiCl] and dimeric species [(Cp2TiCl)(2)]. The frozen solution EPR spectrum revealed the coordination of N-2 to [Cp2TiCl], suggesting that Pyr(4)FAP promotes N-2 coordination to the Ti(III) center.