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

1990; Royal Society of Chemistry; Issue: 1 Linguagem: Inglês

10.1039/p29900000175

2050-8239

Nigel J. Clayden, Peter J. Jones,

X-ray Diffraction in Crystallography

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.