Studies in Werner clathrates. Part 4. Structures of tetrakis(4-ethylpyridine)di-isothiocyanatonickel(II) and its clathrates with p-, m-, and o-xylene, carbon disulphide, and carbon tetrachloride

1987 ◽  
pp. 2125 ◽  
Author(s):  
Madeleine H. Moore ◽  
Luigi R. Nassimbeni ◽  
Margaret L. Niven
Keyword(s):  
Carbon Tetrachloride ◽  
Carbon Disulphide ◽  
Werner Clathrates

CORRELATION OF O–H STRETCHING FREQUENCIES WITH pK VALUES FOR SOME PHENOLS

1957 ◽  
Vol 35 (12) ◽  
pp. 1555-1560 ◽  
Author(s):  
P. M. G. Bavin ◽  
William J. Canady
Keyword(s):  
Carbon Tetrachloride ◽  
Carboxylic Acids ◽  
Carbon Disulphide ◽  
Substituted Phenols ◽  
Electrostatic Effects ◽  
Single Straight Line ◽  
Linear Relationships ◽  
Straight Line ◽  
Alcohol Water

The O–H stretching frequencies, in carbon disulphide, of a number of phenols have been determined. Linear relationships were observed on plotting the stretching frequency against pKA in water. Polar substituted phenols were found to fall along one line, while phenols substituted with aliphatic groups were found to fall along another line of different slope. A change of slope is observed when the stretching frequencies of phenols are plotted against pKA measured in alcohol–water mixtures.Using Goulden's O–H stretching frequencies of carboxylic acids measured in carbon tetrachloride, an attempt has been made to explain the observed deviations from a single straight line in terms of electrostatic effects in the ionizing solvent. The results indicate that for the substances examined, such effects are not responsible for the observed deviations.

Determination of optical constants and vibrational band intensities of liquids in the infrared using attenuated total reflexion

1967 ◽  
Vol 298 (1453) ◽  
pp. 160-177 ◽  
Keyword(s):  
Refractive Index ◽  
Carbon Tetrachloride ◽  
Working Conditions ◽  
Optical Constants ◽  
Carbon Disulphide ◽  
Absorption Bands ◽  
Total Reflexion ◽  
Solid Liquid Interface ◽  
Solid Liquid

The refractive index, and vibrational absorption band intensities, of some liquids have been determined by a new method involving attenuated total reflexion at a solid liquid interface. The principles of the method have been explained and the factors which determine a choice of optimal working conditions have been discussed. The method has been applied to absorp­tion bands of benzene, carbon tetrachloride, chloroform, bromoform, sym -tetrabromo-ethane, and carbon disulphide. Data have been obtained on the variation of refractive index across the absorption bands, and the computed band intensities have been compared with those obtained previously by other methods.

The heat capacities of certain liquids

1957 ◽  
Vol 239 (1217) ◽  
pp. 230-246 ◽  
Keyword(s):  
Heat Capacity ◽  
Carbon Tetrachloride ◽  
Carbon Disulphide ◽  
Heat Capacities ◽  
Constant Volume ◽  
Pressure Data ◽  
Different Temperatures ◽  
Structural Contribution ◽  
Liquid Heat ◽  
Total Heat Capacity

The heat capacities and adiabatic compressibilities of carbon tetrachloride, chloroform, methylene dibromide and m ethyl iodide have been measured between about — 30 and 30° C. The heat capacities at constant volume have been derived, and it is emphasized th a t these quantities apply to particular volumes existing at different temperatures. An isotherm for liquids, based on high-pressure data, has been used to obtain an expression for the effect of change of volume on the heat capacity at constant volume. This relation has been applied to mercury, carbon disulphide, carbon tetrachloride, chloroform and water. Satisfactory agreement has been obtained with the results found in other ways by Bridgman (1911, 1912) on mercury and water and by Gibson & Loeffler (1941) on carbon tetrachloride and water. From the results found in this work on the resolution of the various energy contributions to the liquid heat capacities of polyatomic molecules other than water, it is concluded that the concept of molecular rotation about a preferred axis can explain most of the facts established. There remains, however, a structural contribution to the total heat capacity which is approximately R cal mole -1 deg. -1 .

Spectra of flames supported by free atoms

1952 ◽  
Vol 213 (1114) ◽  
pp. 366-379 ◽  
Keyword(s):  
Carbon Tetrachloride ◽  
Methyl Alcohol ◽  
Atomic Hydrogen ◽  
Atomic Oxygen ◽  
Electronic Excitation ◽  
Carbon Disulphide ◽  
Mechanism Of Formation ◽  
Organic Halides ◽  
Reaction Zones ◽  
Very High

The spectra of the ‘atomic flames’ of organic compounds with the products of discharges through oxygen, hydrogen and water vapour have been examined. Hydrocarbons give bright flames with water products but not, contrary to previous reports, with dry atomic hydrogen. Carbon tetrachloride and other organic halides and also carbon disulphide do give bright flames with hydrogen. The rotational intensity distribution in the OH band in most atomic flames corresponds to a very high temperature, around 8000° K; it is high for methyl alcohol with water products, but only around 2500° K for methyl alcohol with atomic oxygen. The flame of acetylene with products from heavy water, D 2 O, gives mainly OD and CD rather than OH and CH bands. The mechanism of formation and excitation of CH and OH in flames is discussed. When iron carbonyl is introduced into atomic flames very high electronic excitation of iron atoms is observed, as in the reaction zones of ordinary premixed flames; this high excitation is also observed for the flame of carbon tetrachloride with atomic hydrogen.

The structures and vibrational spectra of methyl chloroformate and dimethyl carbonate

1966 ◽  
Vol 19 (9) ◽  
pp. 1637 ◽  
Author(s):  
B Collingwood ◽  
H Lee ◽  
JK Wilmshurst
Keyword(s):  
Carbon Tetrachloride ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Dimethyl Carbonate ◽  
Carbon Disulphide ◽  
Vapour Phase ◽  
Carboxylate Group ◽  
Infrared Band

The infrared spectra of methyl chloroformate and dimethyl carbonate in the vapour phase and as solutions in carbon disulphide and carbon tetrachloride have been obtained from 4000 to 400 cm-1 together with the Raman spectra of the liquids. The infrared band contours for both molecules are consistent with a cis configuration of the carboxylate group and the spectra may be interpreted satisfactorily on this basis.

A comparative molecular dynamics and neutron scattering study of the liquid mixture carbon tetrachloride/carbon disulphide

1989 ◽  
Vol 67 (5) ◽  
pp. 1141-1151 ◽  
Author(s):  
U. Mittag ◽  
J. Samios ◽  
Th. Dorfmueller ◽  
St. Guenster ◽  
M.D. Zeidler ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Carbon Tetrachloride ◽  
Neutron Scattering ◽  
Liquid Mixture ◽  
Carbon Disulphide ◽  
Scattering Study ◽  
Neutron Scattering Study
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