Chiral direction and interconnection of helical three-connected networks in metal-organic frameworks

被引:110
作者
Prior, TJ [1 ]
Rosseinsky, MJ [1 ]
机构
[1] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England
关键词
D O I
10.1021/ic025775i
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The control of the interpenetration and chirality of a family of metal-organic frameworks is discussed. These systems contain two- (A) and four-fold (13) interpenetration of helical three-connected networks generated by binding the 1,3,5-benzenetricarboxylate (btc) ligand to a metal center. These frameworks have the general formula Ni-3(btc)(2)XmYn solvent (where X = pyridine or 4-picoline, Y = ethylene glycol, 1,2-propanediol, 1,4-butanediol, meso-2,3-butanediol, 1,2,6-hexanetriol, glycerol). The structural and chemical effects of modifying the alcohol and aromatic amine ligands bound to the metal center include controlling the thermal stability and the degree of interpenetration. Covalent linking of the four interpenetrating networks in the A family and the switching of diol binding from mono- to bidentate are demonstrated. Recognition of chiral diols by the hand of the network helices is investigated by binding an alcohol ligand with two chiral centers of opposite sense to the same helix. This reveals the subtle nature of the helix-ligand interaction.
引用
收藏
页码:1564 / 1575
页数:12
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