Silver鈥揙rganic Frameworks Containing Ethynediide or Ethynide with Ancillary Oligo-伪-sulfanylpyrazinyl and Dimethylsulfoxide Ligands
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- 作者：Li-Li Wen ; Han Wang ; Chong-Qing Wan ; Thomas C. W. Mak
- 刊名：Organometallics
- 出版年：2013
- 出版时间：September 23, 2013
- 年：2013
- 卷：32
- 期：18
- 页码：5144-5152
- 全文大小：538K
- 年卷期：v.32,no.18(September 23, 2013)
- ISSN：1520-6041
文摘
Five new silver(I)鈥搊rganic frameworks containing ethynediide or alkyl and aryl ethynide, together with newly designed oligo-伪-sulfanylpyrazinyl ligands, namely, [(Ag2C2)2(AgCF3COO)11(L1)(渭2-DMSO)3(DMSO)5]路1/4H2O (L1 = 2,6-bis(pyridin-2-ylthio)pyrazine, 1), [(Ag2C2)2(AgCF3COO)11(L2)(渭2-DMSO)5(DMSO)3]路1/4H2O (L2 = 2-(pyrazin-2-ylthio)-6-(pyridin-2-ylthio)pyrazine, 2), [(AgC鈮tBu)2(AgCF3COO)5(L3)(DMSO)3(H2O)] (L3 = 2,6-bis(pyrazin-2-ylthio)pyrazine, 3), [(AgC鈮Ph)4(AgCF3COO)2(L3)(DMSO)2]路DMSO路1/2H2O (4), and [(AgC鈮C6H4Cl-3)4(AgCF3COO)2(L3)(DMSO)]路H2O (5), have been synthesized and characterized by X-ray crystallography. Isomorphous complexes 1 and 2 feature an infinite coordination chain composed of (C2)2Ag15 clusters alternatively linked by L1 or L2 ligands; weak intermolecular C鈥揌路路路F hydrogen bonding between adjacent infinite chains results in a three-dimensional supramolecular network. Complex 3 exhibits a coordination layer structure composed of (tBuC2)2Ag7 aggregates. Compounds 4 and 5 are nearly isostructural, each possessing a ladder-like chain with a centrosymmetric (arylC2)8Ag12 cluster as its structure building unit. With the assistance of weak intermolecular hydrogen bonds, three-dimensional and two-dimensional supramolecular architectures were generated in 4 and 5, respectively. The diverse coordination modes of oligo-伪-sulfanylpyrazinyl ligands Ln (n = 1, 2, 3) account for the variable framework dimensionalities observed for 1鈥?b>5. Notably, complexes 3鈥?b>5 provide the first examples of extended, conformationally flexible N-donor ancillary ligands incorporated into silver alkyl and aryl ethynide systems. In addition, complexes 1鈥?b>5 display ligand-based photoluminescence.