Multiple metal coordination by calixarenes:: A structure determination of relevance to the use of calixarenes as solvent extraction agents

被引:8
作者
Asfari, Z
Harrowfield, JM
Thuéry, P
Nierlich, M
Vicens, JE
机构
[1] Univ Louis Pasteur CNRS UMR 7512, ECPM, F-67000 Strasbourg, France
[2] Univ Western Australia, Special Res Ctr Adv Mineral & Mat Proc, Nedlands, WA 6907, Australia
[3] CEA, SCM CNRS URA 331, F-91191 Gif Sur Yvette, France
关键词
D O I
10.1071/CH98178
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An insoluble material formed in attempts to extract the copper(II) complex of (R,S)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane with the tetraanion of tetrakis(carboxymethyl) p-t-butylcalix[4]arene recrystallizes from pyridine with the composition [Cu(C16H36N4)] [Na-2(C52H60O12)]. 2C(5)H(5)N(.)4 . 5H(2)O. The crystals are monoclinic, space group P 2(1)/c (C-2h(5), No. 14); a 26.8524(8), b 12.8151(2), c 25.6525(8) Angstrom; beta 115.356(1)degrees. The structure was refined on F-2 (11379 reflections, 955 parameters), giving conventional R-1 0.057 (wR(2) 0.118). The calixarene encapsulates two sodium ions and has only tenuous connection to the copper/macrocycle complex through axial coordination of one carboxylate oxygen.
引用
收藏
页码:403 / 407
页数:5
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