Molybdenum(V), germanium(IV), aluminum(III) and nickel(II) adducts with ethyleneurea, ethylenethiourea and propyleneurea: some empirical correlations involving TG and IR data

Abstract

The adducts MoCl5·2eu, MoCl5·2pu, GeCl4·2etu, AlCl3·2pu, AlCl3·3pu, NiCl2·2etu and NiCl2·4etu (eu = ethyleneurea, etu = ethylenethiourea and pu =propyleneurea) were synthesized and characterized by elemental analysis (C, H, N), infrared spectroscopy (IR) and thermogravimetry (TG). IR Results show that eu and pu coordinate through oxygen, whereas etu coordinates through nitrogen. For all investigated adducts, a single mass loss step associated with the release of ligand molecules is observed. Empirical correlations involving TG and IR data are established.

Keywords

• adducts
• thermogravimetry
• infrared spectroscopy
• empirical correlations