Lanthanum(III) and praseodymium(III) derivatives with dithiocarbamates derived from α-amino acids

Add time:08/02/2019    Source:sciencedirect.com

Lanthanum(III) and praseodymium(III) complexes with dithiocarbamates have been synthesized by the reactions of lanthanum(III) and praseodymium(III) chloride with barium dithiocarbamate and complexes of type [LnCl(L)H2O]n have been obtained (where Ln = La(III) or Pr(III); L = barium salt of dithiocarbamate derived from glycine, l-leucine, l-valine, dl-alanine). The complexes have been characterized by elemental analysis, molar conductance, electronic absorption and fluorescence, infrared, far infrared, 1H NMR spectral studies. The presence of coordinated water molecule is inferred from thermogravimetric analysis which indicates the loss of one water molecule at 150–170 °C.The oscillator strength, Judd–Ofelt intensity parameter, stimulated emission cross-section, etc. have been obtained for different transitions of Pr3+.

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