CONFORMATIONAL FEATURES AND COORDINATION PROPERTIES OF FUNCTIONALIZED CYCLODEXTRINS - FORMATION, STABILITY, AND STRUCTURE OF PROTON AND COPPER(II) COMPLEXES OF HISTAMINE-BEARING BETA-CYCLODEXTRIN IN AQUEOUS-SOLUTION

被引：103

作者：

BONOMO, RP

CUCINOTTA, V

DALESSANDRO, F

IMPELLIZZERI, G

MACCARRONE, G

VECCHIO, G

RIZZARELLI, E

机构：

[1] UNIV CATANIA, DIPARTIMENTO SCI CHIM, I-95125 CATANIA, ITALY

[2] CNR, IST STUDIO SOSTANZE NAT INTERESSE ALIMENTARE & CHI, I-95125 CATANIA, ITALY

来源：

INORGANIC CHEMISTRY | 1991年 / 30卷 / 13期

关键词：

D O I：

10.1021/ic00013a003

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The functionalized cyclodextrin 6-deoxy-6-(N-histamino)-beta-cyclodextrin was synthesized, and an NMR, EPR, pH-metric, and calorimetric investigation was carried out in aqueous solution in order to ascertain its behavior toward protonation and copper(II) complexation. Spectroscopic results as well as thermodynamic data give evidence of the influence of the beta-cyclodextrin cavity. In particular, the NMR spectra data show a protonation-promoted inclusion of the imidazole ring, while the copper(II) coordination is markedly affected by the presence of the cyclodextrin cavity, as shown by the A parallel-to value decrease, with respect to the analogous histamine complex.

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页码：2708 / 2713

页数：6

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