EXAFS and EPR studies of inclusion compounds of the trans-[Cu(en)2(H2O)2]2+ in cucurbit[8]uril

被引：1

作者：

Trubina, S. V. ^{[1
]}

Erenburg, S. B. ^{[1
]}

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

Bakovets, V. V. ^{[1
]}

Dolgovesova, I. P. ^{[1
]}

Mit'kina, T. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION-X-RAY SYNCHROTRON AND NEUTRON TECHNIQUES | 2010年 / 4卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

CUCURBITURIL;

D O I：

10.1134/S102745101004021X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

This work describes EXAFS and EPR studies of inclusion compounds of the trans-[Cu(en)(2)(H2O)(2)](2+) complex in the macrocyclic cavitand CB[8] at different stages of heat treatment in the hydrogen atmosphere in a temperature range of 200-330A degrees C. The structure and composition of the nearest environment of copper atoms are characterized, and the interatomic distances and coordination numbers are determined. It is shown that the structure of the copper complex inside the cavitand CB[8] remains unchanged at the first stage of complex preparation and upon heating up to 280A degrees C in hydrogen atmosphere. The copper environment corresponds to four nitrogen atoms and two oxygen atoms. Further temperature treatment at 330A degrees C causes decomposition of the complex inside the cavitand without the formation of copper clusters.

引用

页码：658 / 661

页数：4

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