Premium
Raman spectra indicative of unusual water structure in crystals formed from a room‐temperature ionic liquid
Author(s) -
Miki Hiroko,
Hayashi Satoshi,
Kikura Hiroshige,
Hamaguchi Hiroo
Publication year - 2006
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1646
Subject(s) - raman spectroscopy , ionic liquid , chemistry , crystal structure , ionic bonding , crystallography , ionic crystal , crystal (programming language) , spectral line , analytical chemistry (journal) , ion , organic chemistry , catalysis , optics , programming language , physics , astronomy , computer science
Formation of crystals with unusual water structure has been found to take place in an ionic liquid 1‐butyl‐3‐methylimidazolium tetrachloroferrate (bmim[FeCl 4 ]). The Raman spectrum of a crystal formed in bmim[FeCl 4 ] showed two prominent Raman bands ascribed to H 2 O. Another crystal formed in bmim[FeCl 4 ] exposed to D 2 O atmosphere showed Raman bands of H 2 O, HOD and D 2 O. These findings indicate that an unusually high concentration of water is contained in the crystals. The observed Raman bands of the HOH, HOD and DOD bending modes are unusually narrow, implying an unknown unique structure of water. Copyright © 2006 John Wiley & Sons, Ltd.