A new method of fitting approximate vibrational spectra to heat capacities of solids with Tarasov functions

1996 ◽  
Vol 47 (4) ◽  
pp. 899-911 ◽  
Author(s):  
Ge Zhang ◽  
B. Wunderlich
Keyword(s):  
Vibrational Spectra ◽  
Heat Capacities ◽  
New Method ◽  
Heat Capacities Of Solids

Schwingungsspektren der Schwefelringe S8, 34S8, S12 und S12 · CS2 sowie thermodynamische Funktionen der Moleküle Sn (n = 2 — 12) / Vibrational Spectra of the Sulfur Rings S8, 34S8, S12 and S12 · CS2 and Thermodynamic Functions of the Molecules Sn (n = 2…12)

1978 ◽  
Vol 33 (8) ◽  
pp. 951-958 ◽  
Author(s):  
Ralf Steudel ◽  
Hans-Joachim Mäusle
Keyword(s):  
Force Field ◽  
Raman Spectra ◽  
Thermodynamic Functions ◽  
Vibrational Spectra ◽  
Molecular Size ◽  
Heat Capacities ◽  
Force Constants ◽  
Sulfur Vapor ◽  
Sulfur Species

Raman spectra of S8, 34S8, S12, and S12 · CS2 are reported and force constants have been calculated for S8 and S12 using a modified Urey-Bradley force field. The fundamental vibrations and molecular geometries of S8 and S12 have been used for the calculation of thermodynamic functions. The standard entropies, S0T, as well as the molar heat capacities, Cp, of sulfur species Sn are shown to depend linearly on the molecular size, n, as follows (in J · mole-1 · K-1):S0298 = 35.16n + 147.0, Cp(298 K) = 21.00 n - 11.7.By interpolation entropies for S9, S10 and S11 have been obtained, and these data are used to show that the concentrations of sulfur rings larger than S8 in sulfur vapor must be negligibly small.

Thermal Properties of Alcaline-Earth-Oxides I. Specific heat measurements 1-3 Centre National de Recherches sur les Tres Basses Temperatures

1969 ◽  
Vol 24 (11) ◽  
pp. 1794-1800 ◽  
Author(s):  
E. Gmelin
Keyword(s):  
Thermal Properties ◽  
Specific Heat ◽  
Adiabatic Calorimeter ◽  
Heat Capacities ◽  
Temperature Calibration ◽  
Specific Heats ◽  
Thermal Switch ◽  
Heat Capacities Of Solids ◽  
Better Than

Abstract The heat capacities of MgO, CaO, SrO, BaO, having NaCl-structure, have been measured with an adiabatic calorimeter capable to measure heat capacities of solids between 1.2 and 340 °K. A mechanical thermal switch is used for specimen cooling and the temperature calibration above 4 °K is performed with a gas thermometer. The values of the specific heats, Cv , are tabulated. The entropies at 273.15 °K are 27.19; 38.3; 51.9; and 66.9 for MgO. CaO, SrO and BaO respectively, in J/mol °K. The accuracy of the measurements is estimated to be better than 0.8% (smoothed curve).

scholarly journals Heat Capacities of Solids at Low Temperatures

1966 ◽  
Vol 69 (9) ◽  
pp. 1579-1584 ◽  
Author(s):  
Hideaki CHIHARA ◽  
Hiroshi SUGA
Keyword(s):  
Low Temperatures ◽  
Heat Capacities ◽  
Heat Capacities Of Solids

Determination of the individual specific heat capacities of solids from multi-component powder mixtures and polymorphic mixtures

2011 ◽  
Vol 108 (1) ◽  
pp. 361-370 ◽  
Author(s):  
Martin Tjahjono ◽  
Martin Karl Schreyer ◽  
Liangfeng Guo ◽  
Marc Garland
Keyword(s):  
Specific Heat ◽  
Heat Capacities ◽  
Powder Mixtures ◽  
Heat Capacities Of Solids ◽  
Specific Heat Capacities ◽  
The Individual

Vibrational spectra and force constants of symmetric tops: Rovibrational analysis of 2ν6 and 2ν6 − ν6 of H3Si35Cl and H3Si37Cl, and a new method for the determination of A0 and DK0

1984 ◽  
Vol 106 (2) ◽  
pp. 349-361 ◽  
Author(s):  
H. Bürger ◽  
G. Schippel ◽  
A. Ruoff ◽  
H. Essig ◽  
S. Cradock
Keyword(s):  
Vibrational Spectra ◽  
Force Constants ◽  
New Method

A new method for refining the vibrational frequencies and modes on calculation of the vibrational spectra of polymers

1987 ◽  
Vol 46 (5) ◽  
pp. 472-476
Author(s):  
L. A. Gribov ◽  
L. I. Reitblat
Keyword(s):  
Vibrational Spectra ◽  
Vibrational Frequencies ◽  
New Method

Zeise's Salt, K[Pt(C2H4)Cl3], Anhydrous and Monohydrate and the Platinum–Olefin Interaction

1972 ◽  
Vol 50 (10) ◽  
pp. 1596-1600 ◽  
Author(s):  
J. Hubert ◽  
P. C. Kong ◽  
F. D. Rochon ◽  
T. Theophanides
Keyword(s):  
Double Bond ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Ring Structure ◽  
Original Method ◽  
Platinum Atom ◽  
New Method ◽  
Laser Raman ◽  
Laser Raman Spectra

Zeise's salt, anhydrous and monohydrate, has been prepared by a new method similar to the original method used by Zeise. The infrared and laser Raman spectra of the anhydrous Zeise's salt together with the infrared spectra of the deutero and bromo analogs, are reported and discussed. The vibrational spectra are interpreted in terms of a cyclopropane-like ring structure, obtained by the insertion of the platinum atom into the double bond.

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