Design and Construction of Coordination Polymers by 4-Amino-3,5-bis(n-pyridyl)-1,2,4-triazole (n = 2, 3, 4) Isomers in a Copper(I) Halide System: Diverse Structures Tuned by Isomeric and

详细信息    查看全文

• 作者：Baiyan Li ; Yu Peng ; Guanghua Li ; Jia Hua ; Yang Yu ; Di Jin ; Zhan Shi ; Shouhua Feng
• 刊名：Crystal Growth & Design
• 出版年：2010
• 出版时间：May 5, 2010
• 年：2010
• 卷：10
• 期：5
• 页码：2192-2201
• 全文大小：1229K
• 年卷期：v.10,no.5(May 5, 2010)
• ISSN：1528-7505

文摘

Twelve Cu(I) coordination polymers, [CuCl(L1)]_n (1), [Cu₄I₄(L1)₂]_n (2), {[Cu₂I₂(L1)]·0.5I₂}_n (3), [Cu₃I₃(L1)]_n (4), [Cu₂Br₂(L1)]_n (5), [CuBr(L1)]_n (6), [Cu₂Cl₂(L1)]_n (7), [Cu₂Br₂(L2)]_n (8), [CuBr(L2)]_n (9), [CuI(L2)]_n (10), [Cu₃I₃(L2)]_n (11), and Cu₂I₂(L3)₂ (12) (L1 = 4-amino-3,5-bis(4-pyridyl)-1,2,4-triazole, L2 = 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole and L3 = 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole), have been prepared and structurally characterized. In these compounds, 4-amino-3,5-bis(n-pyridyl)-1,2,4-triazole (n-bpt) exhibits different coordination modes tuned by the isomeric effect and the anion effect, forming various architectures by bridging a variety of CuX (X = Cl, Br, or I) building units. Compound 1 presents a layer structure with (4, 4) topology built by bridging adjacent (CuCl)_∞ chains with L1. Compound 2 shows an unusual one-dimensional strap structure by linking a rare Cu₈I₈ unit with L1. Compounds 3 and 4 present two-dimensional layers with (6, 3) topology. Compound 5 shows a three-dimensional ZnCl₂ network with {3.6.7⁴}{3.6².7³}₂ topology. Compound 6 exhibits a layer with (4, 8²) network topology. A complicated three-dimensional framework for 7 is constructed with unique {6.8²}₂{6.8⁵} topology. Compounds 8 and 9 are both chains, and hydrogen-bonding and π−π interactions play important roles in stabilizing the extended structure. Compound 10 is a layer with (4, 4) topology. An interesting double layer compound exhibiting complicated structure is found for 11. Compound 12 is a zero-periodic compound. The luminescent properties of compounds 4−6, 8, 9, and 12 have been investigated in the solid state.