Low-temperature heat capacities and derived thermodynamic functions of para-substituted halogen benzenes. 1. p-chlorobromobenzene and p-chloroiodobenzene

Authors
van Miltenburg, JC Oonk, HAJ van den Berg, GJK
Citation
Jc. Van Miltenburg et al., Low-temperature heat capacities and derived thermodynamic functions of para-substituted halogen benzenes. 1. p-chlorobromobenzene and p-chloroiodobenzene, J CHEM EN D, 45(4), 2000, pp. 704-708
Citations number
13
Categorie Soggetti
Chemistry,"Chemical Engineering
Journal title
JOURNAL OF CHEMICAL AND ENGINEERING DATA
ISSN journal
00219568 → ACNP
Volume
45
Issue
4
Year of publication
2000
Pages
704 - 708
Database
ISI
SICI code
0021-9568(200007/08)45:4<704:LHCADT>2.0.ZU;2-K
Abstract
Heat capacity measurements were made on p-chlorobromobenzene and p-chloroio dobenzene from 5 K to 360 K. The measurements were used to calculate the en tropy and enthalpy relative to 0 K. The enthalpy of melting of p-chlorobrom obenzene was found to be (18 696 +/- 20) J.mol(-1) and the triplet point te mperature (337.93 +/- 0.01) K. For p-chloroiodobenzene these values were re spectively (16 103 +/- 20) J.mol(-1) and (326.72 +/- 0.01) K. A very small glass transition was found in p-chloroiodobenzene between 270 R and 283 K.