Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Clathrate and inclusion compounds: part 14 : variable temperature vibrational spectroscopic studies of monosubstituted cyclohexane guests in thiourea.
AU - Davies, J. Eric D.
AU - Nightingale, G. J.
PY - 1999/9
Y1 - 1999/9
N2 - Infrared and Raman spectra over the temperature range room temperature to 74K have been recorded for a range of inclusion compounds of thiourea containing monosubstituted cyclohexanes C6H11X (X =Cl,Br,I,CN,NCO) as guests. The liquid phase of all the cyclohexanes consists of an equilibrium mixture of axial and equatorial conformers, with the equatorial conformer being the more abundant. At room temperature the chloro, bromo and cyano substituted guests exist predominantly as the axial conformer, whereas the iodo and isocyanato substituted guests exist as a mixture of both conformers, but with the axial conformer being the more abundant. The iodocyclohexane inclusion compound was the only one to display a temperature dependent change in the intensity ratio of the conformer bands. This could be due to a change in the conformer ratio or to a structural phase change.
AB - Infrared and Raman spectra over the temperature range room temperature to 74K have been recorded for a range of inclusion compounds of thiourea containing monosubstituted cyclohexanes C6H11X (X =Cl,Br,I,CN,NCO) as guests. The liquid phase of all the cyclohexanes consists of an equilibrium mixture of axial and equatorial conformers, with the equatorial conformer being the more abundant. At room temperature the chloro, bromo and cyano substituted guests exist predominantly as the axial conformer, whereas the iodo and isocyanato substituted guests exist as a mixture of both conformers, but with the axial conformer being the more abundant. The iodocyclohexane inclusion compound was the only one to display a temperature dependent change in the intensity ratio of the conformer bands. This could be due to a change in the conformer ratio or to a structural phase change.
U2 - 10.1007/BF02903456
DO - 10.1007/BF02903456
M3 - Journal article
VL - 40
SP - 802
EP - 805
JO - Journal of Structural Chemistry
JF - Journal of Structural Chemistry
SN - 0022-4766
IS - 5
ER -