EFFECT OF TEMPERATURE COUNTER-ION AND SOLVENT ON ABSORPTION SPECTRUM OF 4,5-METHYLENEPHENANTHRENE ANION

被引：47

作者：

CASSON, D

TABNER, BJ

机构：

[1] Department of Chemistry, The University

来源：

JOURNAL OF THE CHEMICAL SOCIETY B-PHYSICAL ORGANIC | 1969年 / 05期

关键词：

D O I：

10.1039/j29690000572

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The absorption spectrum of the 4,5-methylenephenanthrene anion has been studied. In tetrahydrofuran solution and with sodium as the counter-ion the spectrum changes markedly with temperature. It appears that this change is best interpreted in terms of two different types of ion pair, i.e., contact and solvent-separated. The fraction of solvent-separated ion pairs, in a given solvent, decreases in the order Li > Na > K > Cs. The effect of solvent on the fraction of solvent-separated ion pairs, with the same counter-ion, is in the order 1,2-dimethoxyethane > tetrahydrofuran > 2- methyltetrahydrofuran > tetrahydropyran. ΔH° and ΔS° have been determined for each system studied and vary markedly with counter-ion.

引用

页码：572 / &

共 19 条

[1] ACCASCINA F, 1959, ELECTROLYTIC CONDUCT
[2] ELECTRON SPIN RESONANCE STUDIES OF RADICALS AND RADICAL-IONS IN SOLUTION .3. ION ASSOCIATION IN LITHIUM NAPHTHALID SOLUTIONS
AYSCOUGH, PB
SARGENT, FP
[J]. JOURNAL OF THE CHEMICAL SOCIETY B-PHYSICAL ORGANIC, 1966, (09): : 900 - &
[3] BATTACHARYYA DN, 1965, J PHYS CHEM-US, V69, P608
[4] STUDIES OF ORGANO-ALKALI METAL COMPLEXES .4. ABSORPTION SPECTRA IN THE VISIBLE REGION
CARTER, HV
MCCLELLAND, BJ
WARHURST, E
[J]. TRANSACTIONS OF THE FARADAY SOCIETY, 1960, 56 (04): : 455 - 458
[5] STUDIES OF SOLVATION PHENOMENA OF IONS AND ION PARIS IN DIMETHOXYETHANE AND TETRAHYDROFURAN
CARVAJAL, C
TOLLE, KJ
SMID, J
SZWARC, M
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1965, 87 (24) : 5548 - &
[6] CONTACT AND SOLVENT-SEPARATED ION PAIRS OF CARBANIONS .V. ROLE OF SOLVENT STRUCTURE IN ALKALI ION SOLVATION
CHAN, LL
SMID, J
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1968, 90 (17) : 4654 - &
[7] CONTACT AND SOLVENT-SEPARATED ION PAIRS OF CARBANIONS .4. SPECIFIC SOLVATION OF ALKALI IONS BY POLYGLYCOL DIMETHYL ETHERS
CHAN, LL
SMID, J
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1967, 89 (17) : 4547 - &
[8] CHENG P, 1966, J PHYS CHEM, V70, P3180
[9] ELECTRON SPIN RESONANCE STUDIES OF ION-PAIR EQUILIBRIA
CROWLEY, A
HIROTA, N
KREILICK, R
[J]. JOURNAL OF CHEMICAL PHYSICS, 1967, 46 (12) : 4815 - &
[10] ELECTRON SPIN RESONANCE OF ACENAPHTHENE RADICAL ION AND RADICAL ION PAIRS
HERMANN, AM
REMBAUM, A
CARPER, WR
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1967, 71 (08) : 2661 - &

← 1 2 →