A dodecalanthanide wheel supported by p-tert-butylsulfonylcalix[4]aren

被引：34

作者：

Kajiwara, Takashi ^{[1
]}

Katagiri, Kensuke

Takaishi, Shinya

Yamashita, Masahiro

Iki, Nobuhiko

机构：

[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Aoba Ku, Sendai, Miyagi 9808578, Japan

[2] JST, CREST, Sendai, Miyagi 9808578, Japan

[3] Tohoku Univ, Grad Sch Engn, Dept Biomol Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2006年 / 1卷 / 03期

关键词：

calixarenes; chelates; lanthanides; macrocycles; wheels;

D O I：

10.1002/asia.200600057

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A dodecaholmium wheel of [Ho-12(L)(6)(mal)(4)(AcO)(4)(H2O)(14)] (1; mal=malonate) was synthesized by using p-tert-butylsulfonylcalix[4]arene (H4L) as a cluster-forming ligand. The wheel consists of three fragments of mononuclear A(3-) ([Ho(L)(mal)(H2O)](3-)), trinuclear B3- ([Ho(H2O)(2) (mal)(Ho(L)(AcO))(2)](3-)), and C3+ ([Ho(H2O)(2)](3+)), and an alternate arrangement of these fragments (A(3-)-C3+-B3--C3+-A(3-)-C3+-B3--C3+-) results in a wheel structure. The longest and shortest diameters of the core were estimated to be 17.7562(16) and 13.6810(13) angstrom, respectively, and the saddle-shaped molecule possesses a pocketlike cavity inside.

引用

页码：349 / 351

页数：3

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