Synthesis and crystal structure of supramolecular adducts of macrocyclic cavitand cucurbituril with chromium(III) and nickel(II) aqua complexes

被引:32
|
作者
Samsonenko, DG
Geras'ko, OA
Mit'kina, TV
Lipkowski, J
Virovets, AV
Fenske, D
Fedin, VP
机构
[1] Russian Acad Sci, Inst Inorgan Chem, Siberian Div, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
[4] Univ Karlsruhe, Inst Inorgan Chem, D-76128 Karlsruhe, Germany
关键词
D O I
10.1023/A:1022823512468
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Supramolecular compounds ([Cr(H2O)(6)](C36H36N24O12))(NO3)(3) (.) 13H(2)O (I) and ([Ni(H2O)(6)](2)(C36H36N24O12))(SO4)(2) (.) 16H(2)O (II) were obtained from aqueous solutions of chromium nitrate or nickel sulfate and the macrocyclic cavitand cucurbituril. According to X-ray diffraction analysis data, the cucurbituril molecule is closed from both sides by metal aqua complexes due to the formation of hydrogen bonding between the cucurbituril CO groups and aqua ligands. Compound I has a chain structure, while the structure of compound II is layered. Modes of cucurbituril coordination, depending on the size and charge of the metal cation, are discussed.
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页码:166 / 174
页数:9
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