Synthesis, spectroscopic, thermal and XRD studies of aminoguanidinium copper and cadmium oxalates
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New aminoguanidinium metal oxalate complexes with the formulae (AmgH)2[Cu(C2O4)2] and (AmgH)2[Cd(C2O4)2(H2O)2] have been synthesized and characterized. The copper compound loses aminoguanidine exothermically at 240 °C in DTA, whereas aminoguanidine is lost endothermically at 200 °C in cadmium. Both cases decompose exothermically via their respective metal oxalate intermediates to give metal oxide as the end product. It was also observed that hydrazine is lost exothermically in the hydrazinium copper oxalate hydrate. The single-crystal X-ray diffraction study of the copper complex revealed that aminoguanidinium ions are not involved in coordination but act as charge-compensating cations. It is interesting to note that both oxalates act as bidentate chelating ligands. One oxalate bridges the neighbouring copper atom through its carbonyl oxygen with a bond length of 2.561 Å to form square pyramidal geometry around the copper atom.
KeywordsChemical synthesis Inorganic compounds X-ray diffraction Crystal structure
This paper was supported by the Faculty Research Fund, Sungkyunkwan University, 2013.
- 9.Cai J, Zhang Y, Hu X, Feng X. Tris(ethylenediamine-N, N′)cobalt(III) oxalate perchlorate dehydrate. Acta Crystallogr. 2000;C56:661–3.Google Scholar
- 14.Golic L, Bulc N. Structure of guanidinium tris(oxalato)chromate(III) monohydrate. Acta Crystallogr. 1988;C44:2065–8.Google Scholar
- 32.Jeffery GH, Bassett J, Mendham J, Denny RC “Vogel’s Textbook of Quantitative Chemical Analysis”, 5th Ed.,1986.Google Scholar
- 33.Vogel AI. A text book of quantitative inorganic analysis. 4th ed. London: Longman; 1986.Google Scholar
- 34.Sheldrick GM, SHELXTL, version 6.10; Bruker analytical X-ray systems, Madison, WI, 2001.Google Scholar
- 42.Aldwayyan AS, Al-Jekhedab FM, Al-Noaimi M, Hammouti B, Hadda TB, Suleiman M, Warad I. Synthesis and characterization of CdO nanoparticles starting from organometalic dmphen-CdI2 complex. Int J Electrochem Sci. 2013;8:10506–14.Google Scholar