Chandrasekhar, Vadapalli ; Sasikumar, Palani ; Boomishankar, Ramamoorthy ; Anantharaman, Ganapathi (2006) Assembly of lipophilic tetranuclear (Cu4 and Zn4) molecular metallophosphonates from 2,4,6-triisopropylphenylphosponic acid and pyrazole ligands Inorganic Chemistry, 45 (8). pp. 3344-3351. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic060003y
Related URL: http://dx.doi.org/10.1021/ic060003y
Abstract
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 produces the tetranuclear Cu(II) compound [Cu4(μ 3-OH)2{ArPO2(OH)}2(CH3CO2)2(DMPZH)4][CH3COO]2·CH2Cl2 (3). A similar three-component reaction involving ArP(O)(OH)2, 3,5-dimethylpyrazole, and Zn(CH3COO)2·2H2O yields the tetranuclear Zn(II) compound [Zn4{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 metallophosphonate rings. Magnetic studies on 3 revealed antiferromagnetic behavior.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 8914 |
| Deposited On: | 28 Oct 2010 10:34 |
| Last Modified: | 28 Oct 2010 10:34 |
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