The influence of water-ethanol mixture on the thermodynamics of complex formation between 18-crown-6 ether and L-phenylalanine

被引：16

作者：

Usacheva, T. R. ^{[1
]}

Sharnin, V. A. ^{[1
]}

Chernov, I. V. ^{[1
]}

Matteoli, E. ^{[2
]}

Terekhova, I. V. ^{[3
]}

Kumeev, R. S. ^{[3
]}

机构：

[1] Ivanovo State Univ Chem & Technol, Res Inst Thermodynam & Kinet Chem Proc, Ivanovo 153000, Russia

[2] CNR, Inst Phys Chem Proc, CNR IPCF, Rome, Italy

[3] Russian Acad Sci, GA Krestov Inst Solut Chem, Moscow 117901, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2012年 / 543卷

关键词：

ORGANIC-SOLVENT MIXTURES; AMINO-ACIDS; NA+ ION; CROWN-ETHERS; PREFERENTIAL SOLVATION; 15-CROWN-5; ETHER; BENZO-15-CROWN-5; MIXED-SOLVENTS; CATIONS; DIMETHYLSULFOXIDE;

D O I：

10.1016/j.cplett.2012.06.054

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of water-ethanol mixture composition on the complex formation between 18-crown-6 ether and L-phenylalanine was studied by titration calorimetry at T = 298.15 K. The standard thermodynamic parameters (Lambda(r)G(o), Lambda H-r(o), T Lambda S-r(o)) of formation of [Phe18C6] molecular complex were calculated from data obtained by means of the microcalorimetric system TAM III (TA Instruments, USA) at X(EtOH) = 0.0/0.6 mol fraction. The stability of [Phe18C6] and the mechanism of complexation in water were investigated using the H-1 and C-13 NMR spectroscopy. The increase of EtOH concentration results in an increase of the complex stability and of the exothermicity of complexation. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：155 / 158

页数：4

共 50 条

[31] The influence of solvation on the formation of Ag+ complexes with 18-crown-6 ether in water-dimethyl sulfoxide solvents
T. R. Usacheva
I. A. Kuz’mina
V. A. Sharnin
N. S. Sidorenko
S. I. Voronina
Russian Journal of Physical Chemistry A, 2011, 85
[32] The influence of solvation on the formation of Ag+ complexes with 18-crown-6 ether in water-dimethyl sulfoxide solvents
Usacheva, T. R.
Kuz'mina, I. A.
Sharnin, V. A.
Sidorenko, N. S.
Voronina, S. I.
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2011, 85 (06) : 952 - 954
[33] Complex formation of Ag+ with polyether 18-crown-6
T. Usacheva
S. Ledenkov
V. Sharnin
Journal of Thermal Analysis and Calorimetry, 2002, 70 : 379 - 385
[34] Influence of polar solvents upon the complex formation of 18-crown-6 with cations in chloroform
Radu-Cristian Mutihac
Hans-Jürgen Buschmann
Eckhard Schollmeyer
Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2010, 68 : 411 - 416
[35] Influence of polar solvents upon the complex formation of 18-crown-6 with cations in chloroform
Mutihac, Radu-Cristian
Buschmann, Hans-Juergen
Schollmeyer, Eckhard
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY, 2010, 68 (3-4) : 411 - 416
[36] Complex formation of potassium hexachloroplatinate with 18-crown-6 and dibenzo-18-crown-6 in acetonitrile
Guseva, EV
Busygina, TE
Gracheva, LS
Polovnyak, VK
Khasanshin, RA
Yarkova, EG
Yusupov, RA
RUSSIAN JOURNAL OF GENERAL CHEMISTRY, 2001, 71 (02) : 217 - 221
[37] Complex Formation of Potassium Hexachloroplatinate with 18-Crown-6 and Dibenzo-18-Crown-6 in Acetonitrile
E. V. Guseva
T. E. Busygina
L. S. Gracheva
V. K. Polovnyak
R. A. Khasanshin
E. G. Yarkova
R. A. Yusupov
Russian Journal of General Chemistry, 2001, 71 : 217 - 221
[38] Formation, Structure and Thermal Degradation of the Supramolecular Complex between β-Cyclodextrin and 18-Crown-6
Zhu Lin-Hong
Song Le-Xin
Chen Jie
Yang Jing
Wang Mang
ACTA PHYSICO-CHIMICA SINICA, 2011, 27 (07) : 1579 - 1586
[39] Structure of the 18-Crown-6 Complex with Ammonium Hexafluorosilicate and Water
Marina S. Fonari
Victor Ch. Kravtsov
Yurii A. Simonov
Edward V. Ganin
Vladimir O. Gelmboldt
Janusz Lipowski
Journal of inclusion phenomena and macrocyclic chemistry, 2001, 39 : 85 - 89
[40] Structure of the 18-crown-6 complex with ammonium hexafluorosilicate and water
Fonari, MS
Kravtsov, VC
Simonov, YA
Ganin, EV
Gelmboldt, VO
Lipkowski, J
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY, 2001, 39 (1-2) : 85 - 89

← 1 2 3 4 5 →