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Thermal and spectral properties of some anhydrous and hydrated rare earth hydrazinecarboxylates

Thermal and spectral properties of some anhydrous and hydrated rare earth hydrazinecarboxylates. Sivasankar, B. N.; Sharmila, J. R. (Department of Chemistry, Government Arts College 643 001, India). Journal of Thermal Analysis and Calorimetry, 73(1), 271-283 (English) 2003 Kluwer Academic Publishers. CODEN: JTACF7. ISSN: 1388-6150. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) The anhyd. rare earth hydrazinecarboxylates, Ln(N2H3COO)3 where Ln = La, Ce, Pr, Nd or Sm, and hydrated rare earth hydrazinecarboxylates, Ln(N2H3COO)3(H2O)3 where Ln = La or Nd, were prepd. and characterized by chem. analyses, IR spectroscopy and thermal analyses (TG/DTA/DTG). The IR spectra indicate that the hydrazinecarboxylate group in both the sets of complexes is coordinated in a bidentate (chelate) fashion with the N-N stretching frequency at 980-1000 cm-1. The thermal analyses of all the complexes show multi-step decompn. The final product in all the cases is invariably the resp. metal oxide carbide, Ln2O2C2, though there are some variations in the decompn. pattern.Except for chemicals metioned above, 648415-87-6 and 10195-79-6 are also used. .