Published October 2019 | Version v1
Journal article Metadata-only

Phase transition from disordered high-temperature to twinned low-temperature structure of tris(ethylenediamine)zinc(II) selenate

Creators

  • 1. Université de Sfax, Laboratoire physico-chimie de l'État Solide, Département de Chimie, Faculté des Sciences de Sfax (Tunisia)
  • 2. Institut Jean Lamour, UMR 7198 CNRS and Université de Lorraine (France)

Description

The tris(ethylenediamine)zinc(II) selenate, [Zn(C2H8N2)3](SeO4), has been successfully synthesized and crystallographically characterized. It crystallizes at 293 K in the non-centrosymmetric space group P31c of the trigonal system with the following unit cell parameters: a = 9.1137(1) Å, c = 9.8369(2) Å, V = 707.58(2) Å3, and Z = 2. Its crystal structure consists of zinc(II) atom coordinated by three ethylenediamine molecules in N-octahedral geometry and dynamically disordered selenate anion linked together by hydrogen bonds. The title complex undergoes a reversible phase transition at about 241 K detected by DSC. Below this temperature, the structure adopts the non-centrosymmetric space group P3 with the following unit cell parameters: a = 9.0260(2) Å, c = 9.9010(2) Å, V = 698.55(3) Å, and Z = 2. The resulting main change undergoing below the transition temperature is a full ordering of selenate anion due to strengthening of hydrogen bonds. Graphic abstract:

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Additional details

Identifiers

DOI
10.1007/s00706-019-02487-3;

Publishing Information

Journal Title
Monatshefte fuer Chemie
Journal Volume
150
Journal Issue
10
Journal Page Range
p. 1793-1800
ISSN
0026-9247
CODEN
MOCHAP

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
52048889
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S36: MATERIALS SCIENCE;
Descriptors DEI
ANIONS; CALORIMETRY; CRYSTAL STRUCTURE; ETHYLENE; GEOMETRY; HYDROGEN; MOLECULES; PHASE TRANSFORMATIONS; SELENATES; SPACE GROUPS; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; ZINC COMPOUNDS
Descriptors DEC
ALKENES; CHARGED PARTICLES; ELEMENTS; HYDROCARBONS; IONS; MATHEMATICS; NONMETALS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SELENIUM COMPOUNDS; SYMMETRY GROUPS; THERMODYNAMIC PROPERTIES

Optional Information

Copyright
Copyright (c) 2019 Springer-Verlag GmbH Austria, part of Springer Nature