Structural Phase Transitions in Zinc(II) Perchlorate Hexahydrate

Autor:	B. Borzęcka‐prokop, S. A. Hodorowicz
Rok vydání:	1995
Předmět:	Phase transition Inorganic chemistry chemistry.chemical_element General Chemistry Crystal structure Zinc Condensed Matter Physics Perchlorate chemistry.chemical_compound Crystallography chemistry Lattice (order) General Materials Science Orthorhombic crystal system Hydrate Powder diffraction
Zdroj:	Crystal Research and Technology. 30:613-620
ISSN:	1521-4079 0232-1300
DOI:	10.1002/crat.2170300506
Popis:	Phase transitions in zinc perchlorate hexahydrate are studied by X-ray powder diffraction method. Structural changes in the vicinity of transitions detected at 364.5 K and 256.3 K are characterized. At the former the orthorhombic Pmn2 1 phase transforms into the Pmna one (a = 7.812(1), b = 13.518(3) and c = 5.279(1)A at 348.6 K). The latter involves changes of the orthorhombic unit cell (a = 7.7922(9), b = 13.537(2) and c = 5.0588(6)A at 251.0 K). Temperature dependence of lattice parameters in the range of 180 to 363.3 K are presented.
Databáze:	OpenAIRE
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