THE HYDROGEN-BOND SYSTEM IN NATROCHALCITE-TYPE COMPOUNDS - AN FTIR SPECTROSCOPIC STUDY OF THE H3O2- UNIT

Authors
BERAN A GIESTER G LIBOWITZKY E
Citation
A. Beran et al., THE HYDROGEN-BOND SYSTEM IN NATROCHALCITE-TYPE COMPOUNDS - AN FTIR SPECTROSCOPIC STUDY OF THE H3O2- UNIT, Mineralogy and petrology, 61(1-4), 1997, pp. 223-235
Citations number
30
Journal title
Mineralogy and petrology → ACNP
ISSN journal
09300708
Volume
61
Issue
1-4
Year of publication
1997
Pages
223 - 235
Database
ISI
SICI code
0930-0708(1997)61:1-4<223:THSINC>2.0.ZU;2-5
Abstract
FTIR spectroscopy was used to study the vibrational behaviour of the h ydrogen bond system of the H3O2-, unit, present with widely varying O- H ... O distances in natrochalcite-type compounds, MeCu2(H3O2)(ZO(4))2 (Me=Na, K; Z=S, Se). Absorption bands of powder and polarized single- crystal spectra of non-deuterated and partially deuterated natrochalci te phases are assigned to stretching and bending modes of clearly divi ded OH-and H2O groups. These results are indicative for a not centro-s ymmetric configuration of the H3O2-; unit and confirm the presence of a very strong hydrogen bond with a split hydrogen atom position.