Structural Variation and Supramolecular Isomerism in the C-Methylcalix[4]resorcinarene/Bipyridine System
Structural Variation and Supramolecular Isomerism in the C-Methylcalix[4]resorcinarene/Bipyridine System
复制标题
C-甲基杯[4]间苯二酚/联吡啶体系的结构变异和超分子异构现象
DOI：
10.1021/cg0155595
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发表时间：
2002
影响因子：
3.8
通讯作者：
P. Coppens
中科院分区：
文献类型：
--
作者：
B. Ma;Yuegang Zhang;P. Coppens
报道了水热法和溶液法合成的五种超分子化合物[CMCR·2bipy] 1、[CMCR·3bipy] 2、[CMCR·2bipy·2 H2O] 3、[2CMCR]·1.5bipy·5 H2O 4和[CMCR·bipy]·3.5ethanol·H2O·bipy 5（方括号内为骨架组分，CMCR = C-甲基杯[4]间苯二酚芳烃，bipy = 4，4 '-联吡啶）. CMCR在1和2中采用椅子构象，在3 - 5中采用扁平圆锥构象。骨架结构从2D阶梯片（1）、3D阶梯片（2）、砖墙（3和5）到由CMCR分子的垂直不相交条带组成的网络（4）。在目前的研究中发现的超分子结构与文献中报道的其他多组分CMCR/bipy系统进行了比较。砖墙型结构中封闭空腔的性质是不参与骨架氢键的苯氧基OH基团的数量的函数，因此可用于键合到客体分子。溶剂结合的苯氧基基团的数量每…
Five supramolecular compounds [CMCR·2bipy] 1, [CMCR·3bipy] 2, [CMCR·2bipy·2H2O] 3, [2CMCR]·1.5bipy·5H2O 4, and [CMCR·bipy]·3.5ethanol·H2O·bipy 5 (where the square brackets enclose framework components, CMCR = C-methylcalix[4]resorcinarene, bipy = 4,4‘-bipyridine), prepared hydrothermally and from solution, are described. CMCR adopts a chair conformation in 1 and 2, and a flattened cone conformation in 3−5. The framework structures vary from 2D stepped-sheet (1), 3D stepped sheet (2), brick-wall (3 and 5) to a network consisting of perpendicular nonintersecting ribbons of CMCR molecules (4). The supramolecular architectures found in the current study are compared with those of other multicomponent CMCR/bipy system reported in the literature. The nature of the enclosed cavities in the brick-wall type structures is a function of the number of phenoxyl OH groups not involved in the framework hydrogen bonding, and thus available for bonding to guest molecules. The number of solvent-binding phenoxyl groups per ...