Standard enthalpies of formation of Li, Na, K, and Cs thiolates

被引：2

作者：

Leal, Joao P. ^{[1
,2
]}

机构：

[1] Inst Tecnol & Nucl, Unidade Ciencias Quim & Radiofarmaceut, P-2686953 Sacavem, Portugal

[2] Univ Lisbon, Fac Ciencias, Ctr Quim & Bioquim, P-1749016 Lisbon, Portugal

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2010年 / 100卷 / 02期

关键词：

Alkaline metal thiolates; Lattice energy; Thermochemical radii; Thermochemistry; Enthalpy of formation; SODIUM TERT-BUTOXIDE; ALKALINE-EARTH; LITHIUM ALKOXIDES; CRYSTAL-STRUCTURE; MOLAR ENTHALPIES; PHENOXIDES; POTASSIUM; REACTIVITY; CHEMISTRY; RUBIDIUM;

D O I：

10.1007/s10973-009-0657-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The standard enthalpies of formation of alkaline metals thiolates in the crystalline state were determined by reaction-solution calorimetry. The obtained results at 298.15 K were as follows: Delta(f)H(m)(o)(MSR, cr)/kJ mol(-1) = -259.0 +/- 1.6 (LiSC(2)H(5)), -199.9 +/- 1.8 (NaSC(2)H(5)), -254.9 +/- 2.4 (NaSC(4)H(9)), -240.6 +/- 1.9 (KSC(2)H(5)), -235.8 +/- 2.0 (CsSC(2)H(5)). These results where compared with the literature values for the corresponding alkoxides and together with values for Delta(f)H(m)(o)(MSH, cr) were used to derive a consistent set of lattice energies for MSR compounds based on the Kapustinskii equation. This allows the estimation of the enthalpy of formation for some non-measured thiolates.

引用

页码：441 / 446

页数：6

共 41 条

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