Contrary to hexathiacalix[6]arene (H 6 L 6S ) forming [Cu 10 -(L 6S ) 2 ]-type spherical decacopper(II) complex, trithiacalix[6]-arene (H 6 L 3S ), in which three sulfurbridges of H 6 L 6S are replaced with methylenes in an alternate manner, affords nanosized wheel-shaped octanuclear complex [Cu 8 (H 2 L 3S ) 4 ] consisting of four [Cu 2 H 2 L 3S ] units.
与六硫杯[6]芳烃(H 6 L 6S )形成[Cu 10 -(L 6S ) 2 ]型球形十铜(II)络合物相反,三硫杯[6]-芳烃(H 6 L 3S ),其中三硫H 6 L 6S 的桥以交替方式被亚甲基取代,得到由四个 [Cu 2 H 2 L 3S ] 单元组成的纳米轮状八核复合物 [Cu 8 (H 2 L 3S ) 4 ]。
Facile synthesis of thiacalix[n]arenes (n=4, 6, and 8) consisting of p-tert-butylphenol and methylene/sulfide alternating linkage and metal-binding property of the n=4 homologue
2,14-Dithiacalix[4]arene 34 was conveniently prepared in 16% yield by acid-catalyzed cyclocondensation of 2,2′-thiobis[4-tert-butylphenol] with formaldehyde. The present method also afforded the first isolation of the analogues with six and eight phenol units, 36 (10%) and 38 (5%), respectively. Solvent extraction showed that 34 had high selectivity toward Cu2+ ion at pH 5.5 by coordination of the