Affiliation:
1. Udmurt Federal Research Centre of the Ural Branch of the Russian Academy of Sciences , 34, T. Baramzina St. , Izhevsk , 426063 , Russian Federation
Abstract
Abstract
The cluster structure, thermochemical behavior, and some mechanisms of thermal decomposition of the crystalline products in the isodimorphic substitution series Cu
x
Ni(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 imino-bis-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.
Funder
Ministry of Science and Higher Education of the Russian Federation
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science