HEAT-CAPACITY AND AN INCOMMENSURATE PHASE-TRANSITION OF CRYSTALLINE BIS(4-CHLOROPHENYL)SULFONE

Authors
TANAKA T ATAKE T NAKAYAMA H EGUCHI T SAITO K IKEMOTO I
Citation
T. Tanaka et al., HEAT-CAPACITY AND AN INCOMMENSURATE PHASE-TRANSITION OF CRYSTALLINE BIS(4-CHLOROPHENYL)SULFONE, Journal of Chemical Thermodynamics, 26(11), 1994, pp. 1231-1239
Citations number
22
Categorie Soggetti
Chemistry Physical
Journal title
Journal of Chemical Thermodynamics → ACNP
ISSN journal
00219614
Volume
26
Issue
11
Year of publication
1994
Pages
1231 - 1239
Database
ISI
SICI code
0021-9614(1994)26:11<1231:HAAIPO>2.0.ZU;2-Q
Abstract
The heat capacity of crystalline bis(4-chlorophenyl)sulfone was measur ed from the temperature T = 14 to T = 300 K by adiabatic calorimetry. An incommensurate phase transition was detected as a second-order type of heat-capacity anomaly at T = (148.5 +/- 0.5) K. The molar enthalpy and the molar entropy of transition were (43.1 +/- 0.1) J.mol-1 and ( 0.314 +/- 0.005) J.K-1.mol-1, respectively. Some thermodynamic functio ns were calculated from the heat-capacity results and the values were tabulated.