Conclusions
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1.
The following complexes of Pd(II) with diethylenetriaminepentaacetic acid were synthesized for the first time: H3PdL·5H2O, and H4PdLX·3H2O, where X = Cl, Br.
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2.
From the IR spectra of the obtained compounds it follows that the carboxyl groups of diethylenetriaminepentaacetic acid are partially coordinated by palladium.
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3.
Employing thermographic analysis, it was ascertained that the water in the isolated halogen-containing complexes is very firmly bound and is not removed clear up to the decomposition temperature. Two types of hydrate water are present in H3PdL·5H2O.
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Literature cited
O. K. Kudra, O. V. Izbekova, and V. V. Chelekidi, Vestn. Kievsk. Politekhn. Inst., Ser. Khim. Mashinostr. Tekhnol.,1972, 38.
O. K. Kudra, O. V. Izbekova, and V. V. Chelekidi, Izv. Vyssh. Uchebn. Zaved., Ser. Khim. Khim. Tekhnol.,15, 667 (1972).
K. Nakomoto, Infrared Spectra of Inorganic and Coordination Compounds [Russian translation], Mir (1966), p. 284.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 941–943, April, 1977.
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Grevtsev, A.M., Zheligovskaya, N.N., Popov, L.V. et al. Synthesis and study of divalent palladium diethylenetriaminepentaacetates. Russ Chem Bull 26, 867–869 (1977). https://doi.org/10.1007/BF01108224
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DOI: https://doi.org/10.1007/BF01108224