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Series of Copper(II) Coordination Polymers Containing Aminopyrazine and Different Carboxylato Bridges: Syntheses, Structures and Magnetic Properties

被引：36
作者：
Boonmak, Jaursup [1 ,2 ]
Youngme, Sujittra [1 ,2 ]
Chaichit, Narongsak [3 ]
van Albada, Gerard A. [4 ]
Reedijk, Jan [4 ]
机构：
[1] Khon Kaen Univ, Dept Chem, Fac Sci, Khon Kaen 40002, Thailand
[2] Khon Kaen Univ, Ctr Excellence Innovat Chem, Fac Sci, Khon Kaen 40002, Thailand
[3] Thammasat Univ Rangsit, Dept Phys, Fac Sci & Technol, Pathum Thani 12121, Thailand
[4] Leiden Univ, Leiden Inst Chem, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands
来源：
CRYSTAL GROWTH & DESIGN | 2009年 / 9卷 / 07期
关键词：
METAL-ORGANIC FRAMEWORKS; X-RAY-STRUCTURE; CRYSTAL-STRUCTURES; ALIPHATIC DICARBOXYLATES; MALONATE COMPLEXES; HELICAL CHAINS; DONOR LIGANDS; PYRAZINE; NETWORKS; DESIGN;
D O I：
10.1021/cg9001175
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Five new copper(II) carboxylate compounds consisting of coordination networks with aminopyrazine (ampyz) spacer [Cu(ampyz)(O2CH)(2)](n) (1), [Cu-2(ampyz)(O2C2H3)(4)](n) (2), [Cu-2(ampyz)(O2C3H5)(4)](n) (3), [Cu-2(ampyz)(O4C4H4)(2)](n)center dot nH(2)O (4), and [Cu(ampyz)(O4C3H2)](n)center dot 2nH(2)O (5) were synthesized and structurally characterized by X-ray diffraction analyses together with electronic and EPR spectra. Compound 1 reveals it 2D wavy sheet structure. Both 2 and 3 consist of polymeric chains constructed from paddle-wheel (CuNO4)(2) chromophores. The structure of 4 consists of a 2D layer built from double-stranded chain of paddle-wheel units connecting ampyz spacers. Compound 5 exhibits a 2D stairlike layer built from malonate anions and mu(2)-ampyz. Besides the various coordinative modes of carboxylates, the ampyz spacer has an influence on the molecular structures either via the ditopic bridging mode or by other weaker interactions, such as hydrogen bonding and pi-pi stacking, which mainly contribute to the stabilization of the overall supramolecular structures.
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页码：3318 / 3326
页数：9
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