Assembly of lipophilic tetranuclear (Cu4 and Zn4) molecular metallophosphonates from 2,4,6-triisopropylphenylphosponic acid and pyrazole ligands

被引：88

作者：

Chandrasekhar, V ^{[1
]}

Sasikumar, P ^{[1
]}

Boomishankar, R ^{[1
]}

Anantharamian, G ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India

来源：

INORGANIC CHEMISTRY | 2006年 / 45卷 / 08期

关键词：

D O I：

10.1021/ic060003y

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A sterically hindered aryl phosphonic acid ArP(O)(OH)(2) (2) (Ar = 2,4,6-isopropylphenyl) was synthesized and structurally characterized. ArP(O)(OH)(2) forms an interesting hydrogen-bonded corrugated sheet-type supramolecular structure in the solid-state. A three-component reaction involving ArP(O)(OH)(2), 3,5-dimethylpyrazole(DMPZH), and Cu(CH3COO)(2)(H2O)-H-. produces the tetranuclear Cu(II) compound [Cu-4(mu(3)-OH)(2){ArPO2(OH)}(2)(CH3CO2)(2)(DMPZH)(4)]-[CH3COO](2)(CH2Cl2)-C-. (3). A similar three-component reaction involving ArP(O)(OH)2, 3,5-dimethylpyrazole, and Zn(CH3COO)(2)(.)2H(2)O yields the tetranuclear Zn(II) compound [Zn-4{ArPO3}(2){ArPO2(OH)}(2){DMPZH}(4){DMPZ}(2)](.)5MeOH (4). While 3 has been found to have an asymmetric cage structure where two dinuclear copper cores are bridged by bidentate [ArPO2(OH)](-) ligands, 4 possesses an open-book tricyclic structure composed of three fused metal lop h osphonate rings. Magnetic studies on 3 revealed antiferromagnetic behavior.

引用

页码：3344 / 3351

页数：8

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