拉曼光谱
粉末衍射
焓
化学
晶体结构
X射线晶体学
分析化学(期刊)
硝酸钾
热分解
钾
衍射
重盐
热分析
结晶学
溶解度
Crystal(编程语言)
相(物质)
盐(化学)
单晶
热的
无机化学
物理化学
热力学
光学
程序设计语言
物理
有机化学
色谱法
计算机科学
作者
C. Rissom,H. Schmidt,Wolfgang Voigt
标识
DOI:10.1002/crat.200711050
摘要
Abstract A new double salt K 2 SiF 6 ·KNO 3 was found during determination of the solubility of K 2 SiF 6 in aqueous potassium nitrate solutions. Unit cell parameters (P6 3 /mmc, a = 5.6268(1) Å, c = 14.5186(6) Å, V = 398.09(2) Å 3 , Z = 2) and crystal structure have been determined. The compound is further characterized by RAMAN spectroscopy and X‐ray powder diffraction. Thermal properties were studied using DTA, DSC and in situ high‐ temperature X‐ray powder diffraction measurements. At 287 °C K 2 SiF 6 ·KNO 3 decomposes into its components KNO 3 and K 2 SiF 6 with an enthalpy of decomposition of about + 42 J·g ‐1 . Further thermal effects could be assigned to phase transformations of KNO 3 whereby earlier literature data have been reconfirmed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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