The cluster structure of crystalline phases according to TGA/DTA and XPS data in isodimorphic substitution series [CuxNi(1-x){N(CH2PO3)3}]Na4•nH2O (x = 0…1)

Авторы: Chausov F.F., Suksin N.E., Kholzakov A.V., Lomova N.V., Kazantseva I.S., Rybin D.S.
Журнал: Zeitschrift für Kristallographie – Crystalline Materials
Год издания: 2022
Издательство: Walter de Gruyter
Местоположение издательства: Berlin, Germany
DOI: 10.1515/zkri-2022-0034
Аннотация: The cluster structure, thermochemical behavior, and some mechanisms of thermal decomposition of the crystalline products in the isodimorphic substitution series CuxNi(1−x)NTP (x=0…1) have been studied by simultaneous the thermal gravimetric analysis and differential thermal analysis (TGA/DTA) and X-ray photoelectron spectroscopy (XPS). The complexes NiNTP and Cu1/8Ni7/8NTP with a monoclinic crystal structure are the most thermo-stable and characterized by one-step decomposition at 400–440°C with the formation of metal phosphides and phosphates. The complexes Cu3/8Ni5/8NTP–Cu3/4Ni1/4NTP with the triclinic crystal lattice and the trigonal-bipyramidal coordination of metal atoms decompose in two steps. Firstly, the formation of a heteroligand complex with iminobis-methylenephosphonic and methylphosphonic acids takes place at 245°C. Secondly, the complex decomposes at 270–380°C. The monometallic complex CuNTP decomposes almost completely at 280–300°C.
Добавил в систему: Ломова Наталья Валентиновна

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