Structural, vibrational and DSC investigations of the tetraethylammonium hydrogenselenate crystal

被引：27

作者：

Baran, J ^{[1
]}

Sledz, M ^{[1
]}

Drozd, M ^{[1
]}

Pietraszko, A ^{[1
]}

Haznar, A ^{[1
]}

Ratajczak, H ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2000年 / 526卷

关键词：

N(C2H5)(4)]HSeO4; x-ray structure; IR; Raman; hydrogen bonds; phase transitions;

D O I：

10.1016/S0022-2860(00)00530-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The X-ray structure of tetraethylammonium hydrogenselenate, [N(C2H5)(4)]HSeO4, was determined at room temperature. The crystal belongs to the P (1) over bar space group of triclinic system, Z = 2, a = 8.290(2), b = 9.073(2), c = 9.517(2) Angstrom, alpha = 76.75(3), beta = 74.31(3) and gamma = 63.92(3)degrees. The hydrogenselenate anions are joined into cyclic dimers by two identical (equivalent by Ci) strong hydrogen bonds O(2)-H(02)... O(1(a)); the O(2)... O(1(a)) distance equals 2.611(5) Angstrom. Powder IR and Raman spectra are discussed with respect to the crystal structure. The DSC reveals two phase transitions at 328 and 358 K. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：361 / 371

页数：11

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