A study of titanium and magnesium chloride complexes with dialkyl phthalates by solid state 13C CP MAS NMR spectroscopy

Abstract

A series of dialkyl phthalate complexes with magnesium chloride and titanium(IV) chloride has been prepared and characterised by ¹³C CP MAS NMR spectroscopy. The isotropic chemical shift of the ester carbonyl group did not allow co-ordination to magnesium or titanium to be distinguished in general.

Examination of the ester carbonyl chemical shift tensor as characterised by the parameters δ and η, however reveals clear distinction between titanium complexes where η < 1 and magnesium complexes where η > 1. Both complexes give a similar δ value.