Phase polymorphism of [Zn(OS(CH3)2)6](ClO4)2 studied by vibrational spectroscopy

Elżbieta Szostak; Anna Migdał-Mikuli

doi:10.1016/j.saa.2014.04.112

Phase polymorphism of [Zn(OS(CH3)2)6](ClO4)2 studied by vibrational spectroscopy

Spectrochim Acta A Mol Biomol Spectrosc. 2014 Oct 15:131:365-72. doi: 10.1016/j.saa.2014.04.112. Epub 2014 Apr 30.

Authors

Elżbieta Szostak¹, Anna Migdał-Mikuli²

Affiliations

¹ Faculty of Chemistry, Jagiellonian University, No. 3 Ingardena Street, 30-060 Krakow, Poland. Electronic address: szostak@chemia.uj.edu.pl.
² Faculty of Chemistry, Jagiellonian University, No. 3 Ingardena Street, 30-060 Krakow, Poland.

PMID: 24835940
DOI: 10.1016/j.saa.2014.04.112

Abstract

The FT-IR and FT-RS spectra of [Zn(OS(CH3)2)6](ClO4)2 measured in the spectral range of 4000-90cm(-1) in a function of temperature show distinct differences before and after all three observed phase transitions. The study of temperature dependence of the band position and full width at half maximum allowed us to link each of the observed phase transitions (at: TC1(h)≈355K, TC2(h)≈341K and TC3(h)≈315K) with the changes either of the crystal structure or with the reorientational motions of the dimethylosulphoxide (DMSO) ligands and/or [Zn(OS(CH3)2)6](2+) and/or the ClO4(-) anions and/or with all these changes together.

Keywords: FT-IR and FT-Raman; Hexadimethylsulfoxidezinc(II) chlorate(VII); Phase transitions; Reorientational motions.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Dimethyl Sulfoxide / chemistry*
Models, Molecular
Perchlorates / chemistry*
Phase Transition
Spectroscopy, Fourier Transform Infrared
Spectrum Analysis, Raman
Temperature
Zinc / chemistry*

Substances

Perchlorates
Zinc
perchlorate
Dimethyl Sulfoxide