Synthesis and Characterisation of Lanthanide Thiourea Simple and Mixed Complexes using Urea, N-Phenylurea and N, N´ -Diphenyl-Urea as Secondary Ligands

Pallavi V. Vaidya,V.D. Deshpande* and V. Ramchandra Rao

Department of Chemistry, Visvesvarya Regional College of Engineering Nagpur 440 011, India


Simple lanthanide complexes of the type [Ln(L)5(Cl]Cl2.2H2O and mixed complexes of the type [Ln(L)5(L´)3Cl]Cl2.nH2O where Ln ═ Y(III), La(III), Pr(III), Nd(III), Sm(III), Gd(III), Dy(III), L ═ thiourea, L´ ═ urea, N-phenylurea or N, N´-diphenylurea have been prepared and characterised by a study of u.v., visible and i.r. spectra, thermal analysis and conductivity measurements.


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  • Asian J. Chem. /
  •  1991 /
  •  3(1) /
  •  pp 13-20