Structural definition of the low-temperature phase transition of tris(ethane-1,2-diamine)zinc(II) dinitrate

Bernhardt, P. V. and Riley, M. J. (2003) Structural definition of the low-temperature phase transition of tris(ethane-1,2-diamine)zinc(II) dinitrate. Australian Journal of Chemistry, 56 4: 287-291. doi:10.1071/CH03023


Author Bernhardt, P. V.
Riley, M. J.
Title Structural definition of the low-temperature phase transition of tris(ethane-1,2-diamine)zinc(II) dinitrate
Journal name Australian Journal of Chemistry   Check publisher's open access policy
ISSN 0004-9425
Publication date 2003
Sub-type Article (original research)
DOI 10.1071/CH03023
Volume 56
Issue 4
Start page 287
End page 291
Total pages 5
Place of publication Melbourne
Publisher CSIRO Publishing
Collection year 2003
Language eng
Subject C1
250103 Colloid and Surface Chemistry
780103 Chemical sciences
Abstract The 93 K X-ray crystal structure of tris(ethane-1,2-diamine)zinc(II) dinitrate is reported. As predicted by the spectroscopic studies of other workers, there is a reversible phase transition of the structure at low temperature. We have determined this temperature to be 143 K. The structure at this temperature and below resembles that of the room temperature structure, except the crystallographic D-3 symmetry of the complex cation (296 K) is lowered to C-2 ( below 144 K) by subtle changes in cation-anion hydrogen bonding. No change in the conformation of the cation or its bond lengths and angles was found.
Keyword Chemistry, Multidisciplinary
Electron-paramagnetic-res
Spectra
Ni(ii)
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 01:52:27 EST