DETERMINATION OF THE REACTION ENTHALPY AND KINETIC-PARAMETERS FOR THE ISOMERIZATION OF BRIDGED DEWAR BENZENES TO 8,9-DISUBSTITUTED [6]PARACYCLOPHANES BY DIFFERENTIAL SCANNING CALORIMETRY

被引：8

作者：

DREESKAMP, H

SARGE, SM

TOCHTERMANN, W

机构：

[1] PHYS TECH BUNDESANSTALT,D-38116 BRAUNSCHWEIG,GERMANY

[2] CHRISTIAN ALBRECHTS UNIV KIEL,INST ORGAN CHEM,D-24098 KIEL,GERMANY

来源：

TETRAHEDRON | 1995年 / 51卷 / 11期

关键词：

6]PARACYCLOPHANES; DEWAR ISOMERS; REACTION ENTHALPY; ACTIVATION ENERGY; CALORIMETRY;

D O I：

10.1016/0040-4020(95)00072-G

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

In solution the reaction enthalpy for the thermal isomerization of the Dewar isomers 2a and 2b to their corresponding 8,9-disubstituted [6]paracyclophanes 1a and 1b was determined as -128+/-13 kJ . mol(-1) and -146+/-15 kJ . mol(-1), while the activation energies were found to be 101+/-10 kJ . mol(-1) and 117+/-12 kJ . mol(-1) respectively. An improved calorimetric technique was employed using samples in sealed NMR tubes.

引用

页码：3137 / 3140

页数：4

共 13 条

[11] KINETIC-PARAMETERS DETERMINED BY DIFFERENTIAL SCANNING MICRO-CALORIMETRY .8. THERMOLYSIS OF P-SUBSTITUTED T-BUTYL PEROXYBENZOATES - DISCUSSIONS ON HAMMETT CORRELATION
MAILLARD, B
VILLENAVE, JJ
FILLIATRE, C
THERMOCHIMICA ACTA, 1980, 39 (03) : 205 - 214
[12] THE DETERMINATION OF THE MOST PROBABLE MECHANISM FUNCTION AND KINETIC-PARAMETERS OF THE THERMAL-DECOMPOSITION OF COMPLEXES OF RARE-EARTH ISOTHIOCYANATES WITH GLYCINE BY NONISOTHERMAL DIFFERENTIAL SCANNING CALORIMETRY CURVE
YANG, SR
ZHANG, JH
JIANG, BG
YANG, ZH
THERMOCHIMICA ACTA, 1991, 176 : 209 - 220
[13] KINETIC-PARAMETERS DETERMINED BY DIFFERENTIAL SCANNING MICRO-CALORIMETRY .6. THERMOLYSIS OF 1,1'-AZO-(1-CYANOCYCLANES) IN DIFFERENT SOLVENTS
MAILLARD, B
VILLENAVE, JJ
FILLIATRE, C
THERMOCHIMICA ACTA, 1979, 33 (OCT) : 107 - 118

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