RAMAN-SPECTROSCOPIC STUDY OF THE HYDRATES OF 18-CROWN-6

被引：51

作者：

FUKUHARA, K ^{[1
]}

TACHIKAKE, M ^{[1
]}

MATSUMOTO, S ^{[1
]}

MATSUURA, H ^{[1
]}

机构：

[1] HIROSHIMA UNIV,FAC SCI,DEPT CHEM,HIGASHIHIROSHIMA 739,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 21期

关键词：

D O I：

10.1021/j100021a027

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 hydrates of 18-crown-6 have been studied by Raman spectroscopy. The analysis of the Raman spectra, in combination with the examination of the liquidus curve, of the 18-crown-6-water system shows the formation of at least four distinct hydrates at liquid nitrogen temperature. The ratios of 18-crown-6 to water for the two hydrates are 1:6 and 1:4.5, and their congruent melting points are 23.7 and 24.0 degrees C, respectively. The conformation of the crown ring in these hydrates is essentially D-3d The 1:6 hydrate agrees with the hexahydrate determined by a recent crystal structure analysis. The 1:4.5 hydrate is suggested to have a hydration structure similar to that predicted by Monte Carlo simulations. The present experimental findings are well correlated to the results of previous computer simulations.

引用

页码：8617 / 8623

页数：7

共 43 条

[1] CRYSTAL-STRUCTURE OF THE 1-1-6 COMPLEX BETWEEN 18-CROWN-6, HYDROQUINONE AND WATER [J].

BELAMRI, B ;

BAVOUX, C ;

THOZET, A .

JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY, 1990, 8 (04) :383-388

[2] PROTON-IONIZABLE CROWN COMPOUNDS .1. SYNTHESIS, COMPLEXATION PROPERTIES, AND STRUCTURAL STUDIES OF MACROCYCLIC POLYETHER DIESTER LIGANDS CONTAINING A TRIAZOLE SUBCYCLIC UNIT [J].

BRADSHAW, JS ;

CHAMBERLIN, DA ;

HARRISON, PE ;

WILSON, BE ;

ARENA, G ;

DALLEY, NK ;

LAMB, JD ;

IZATT, RM .

JOURNAL OF ORGANIC CHEMISTRY, 1985, 50 (17) :3065-3069

[3] HYDRATION OF 18-CROWN-6 IN CARBON-TETRACHLORIDE - INFRARED SPECTRAL EVIDENCE FOR AN EQUILIBRIUM BETWEEN MONODENTATE AND BIDENTATE FORMS OF BOUND WATER IN THE 1-1 CROWN WATER ADDUCT [J].

BRYAN, SA ;

WILLIS, RR ;

MOYER, BA .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (13) :5230-5233

[4] MECHANISM OF COMPLEXATION OF 18-CROWN-6 WITH ALKALI-METAL IONS IN METHANOL [J].

CHEN, CC ;

PETRUCCI, S .

JOURNAL OF PHYSICAL CHEMISTRY, 1982, 86 (14) :2601-2605

[5] FREE-ENERGY OF ASSOCIATION OF THE 18-CROWN-6-K+ COMPLEX IN WATER - A MOLECULAR-DYNAMICS SIMULATION [J].

DANG, LX ;

KOLLMAN, PA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (15) :5716-5720

[6]

DEJONG F, 1982, STABILITY REACTIVITY

[7] HOST GUEST COMPLEXES OF 18-CROWN-6 WITH NEUTRAL MOLECULES POSSESSING THE STRUCTURE ELEMENT OH2, NH2, CH2 [J].

ELBASYOUNY, A ;

BRUGGE, HJ ;

VONDEUTEN, K ;

DICKEL, M ;

KNOCHEL, A ;

KOCH, KU ;

KOPF, J ;

MELZER, D ;

RUDOLPH, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (22) :6568-6577

[8] INTRAMOLECULAR RELAXATION DYNAMICS AND INFRARED-SPECTRA OF DIAZA MACROCYCLIC COMPLEXES WITH NA+ AND AG+ IN PROPYLENE CARBONATE [J].

FIRMAN, P ;

RODRIGUEZ, LJ ;

PETRUCCI, S ;

EYRING, EM .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (05) :2376-2381

[9] NORMAL COORDINATE ANALYSIS AND FORCE-FIELD OF 18-CROWN-6 [J].

FUKUHARA, K ;

IKEDA, K ;

MATSUURA, H .

JOURNAL OF MOLECULAR STRUCTURE, 1990, 224 :203-224

[10] RAMAN-SPECTROSCOPIC STUDY OF THE CONFORMATIONAL EQUILIBRIA IN 18-CROWN-6 IN WATER - PREDOMINANT D(3D) CONFORMATION [J].

FUKUHARA, K ;

IKEDA, K ;

MATSUURA, H .

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1994, 50 (8-9) :1619-1628

← 1 2 3 4 5 →