A Novel Copper Ammonium Diphosphate--Dimorphic Cu 3 (NH 4 ) 2 (P 2 O 7 ) 2 ·3H 2 O

Autor:	Remigijus Juškėnas, Albinas Pigaga, Algis Selskis
Rok vydání:	2002
Předmět:	Inorganic Chemistry chemistry.chemical_compound Chemistry Organic Chemistry Analytical chemistry chemistry.chemical_element Ammonium Fourier transform infrared spectroscopy Thermal analysis Biochemistry Chemical composition Copper Nuclear chemistry
Zdroj:	Phosphorus, Sulfur, and Silicon and the Related Elements. 177:1237-1243
ISSN:	1563-5325 1042-6507
Popis:	This article deals with the insoluble compounds, formed in CuSO 4 -(NH 4 ) 4 P 2 O 7 -H 2 O system. The solutions were analyzed by means of chemical analysis, the precipitate--by means of x-ray diffraction, chemical and thermal analysis, and FTIR spectroscopy. We have established that at least three poorly soluble compounds can form in the system CuSO 4 -(NH 4 ) 4 P 2 O 7 -H 2 O. Their chemical formulae are Cu 2 P 2 O 7 ·;5H 2 O and polymorphic Cu 3 (NH 4 ) 2 (P 2 O 7 ) 2 ·;3H 2 O. The first modification is most stable when |Cu + P 2 O 7 | = 0.25 M ( n = 1.0), and, in a matter of days, Dimorph A transforms to Dimorph B, which has not been described in any publications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::098ef8fee134c3dc67cee1804a787e94 https://doi.org/10.1080/10426500211727 Zobrazit plný text záznamu