A Windmill-Shaped Hexacopper(II) Molecule Built Up by Template Core-Controlled Expansion of Diaquatetrakis(2-adeninato-N
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- 作者：Josefa Marí ; a Gonzá ; lez-Pé ; rez ; Carolina Alarcó ; n-Payer ; Alfonso Castiñ ; eiras ; Tiziana Pivetta ; Luis Lezama ; Duane Choquesillo-Lazarte ; Guido Crisponi ; and Juan Nicl&oacu
- 刊名：Inorganic Chemistry
- 出版年：2006
- 出版时间：January 23, 2006
- 年：2006
- 卷：45
- 期：2
- 页码：877 - 882
- 全文大小：110K
- 年卷期：v.45,no.2(January 23, 2006)
- ISSN：1520-510X
文摘
The windmill-shaped hexanuclear copper(II) cluster {(H2O)2Cu2(
3-(Ade)4[Cu(oda)(H2O)]4}·6H2O (1-o) has beensynthesized in aqueous medium by in situ core-controlled expansion of the neutral building block Cu2(2-N3,N9-Ade)4(H2O)2 (2) with Cu(oda)(H2O) (3-o) (Ade = adeninato(1-) and oda = oxydiacetato(2-) ligands). Crystal datafor 2-b (2·5H2O): triclinic, space group P
; a = 9.374(1), b = 9.440(1), c = 10.326(1) Å; 
= 78.72(1), 
=76.77(1), 
= 63.51(1)
; final R1 = 0.059; T = 100(2) K. Crystal data for 1-o: monoclinic, space group P21/n; a= 15.203(2), b = 10.245(1), c = 19.094(2) Å; = 101.61(1); final R1 = 0.049; T = 293(2) K. The X-shapedhexanuclear molecule consists of a central core (2) and four terminal arms (3-o) linked together by bridging 3-N3,N7,N9-Ade ligands. There are three crystallographic independent metal atoms (two terminals, one central). AllCu(II) atoms exhibit a 4 + 1 coordination, of which one is an aqua apical ligand. The basal coordination setscomplete the CuN4 + O or CuO3N + O chromophores for the central or terminal metal atoms, respectively. Thermalstability and spectral and magnetic properties were also studied. Analogous compounds to 1-o with tridentate ortripodal tetradentate ligands L2-, instead of oda, have also been synthesized.
3-(Ade)4[Cu(oda)(H2O)]4}·6H2O (1-o) has beensynthesized in aqueous medium by in situ core-controlled expansion of the neutral building block Cu2(2-N3,N9-Ade)4(H2O)2 (2) with Cu(oda)(H2O) (3-o) (Ade = adeninato(1-) and oda = oxydiacetato(2-) ligands). Crystal datafor 2-b (2·5H2O): triclinic, space group P; a = 9.374(1), b = 9.440(1), c = 10.326(1) Å; = 78.72(1), =76.77(1), = 63.51(1); final R1 = 0.059; T = 100(2) K. Crystal data for 1-o: monoclinic, space group P21/n; a= 15.203(2), b = 10.245(1), c = 19.094(2) Å; = 101.61(1); final R1 = 0.049; T = 293(2) K. The X-shapedhexanuclear molecule consists of a central core (2) and four terminal arms (3-o) linked together by bridging 3-N3,N7,N9-Ade ligands. There are three crystallographic independent metal atoms (two terminals, one central). AllCu(II) atoms exhibit a 4 + 1 coordination, of which one is an aqua apical ligand. The basal coordination setscomplete the CuN4 + O or CuO3N + O chromophores for the central or terminal metal atoms, respectively. Thermalstability and spectral and magnetic properties were also studied. Analogous compounds to 1-o with tridentate ortripodal tetradentate ligands L2-, instead of oda, have also been synthesized.