Amine-controlled assembly of metal-sulfite architecture from 1D chains to 3D framework

被引:34
作者
Austria, Cristina
Zhang, Jian
Valle, Henry
Zhang, Qichun
Chew, Emily
Nguyen, Dan-Tam
Gu, J. Y.
Feng, Pingyun
Bu, Xianhui
机构
[1] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA
[2] Calif State Univ Long Beach, Dept Phys & Astron, Long Beach, CA 90840 USA
[3] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA
关键词
D O I
10.1021/ic070325h
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Whereas open-framework materials have been made in a variety of chemical compositions, few are known in which 3-connected SO32- anions serve as basic building units. Here, we report four new metal-sulfite polymeric structures, (ZnSO3)Py (1, py = pyridine), (ZnSO3)(2)(2,2'-bipy)H2O (2, 2,2'-bipy = 2,2'-bipyridine), (ZnSO3)(2)(TMDPy) (3, TMDPy = 4,4'-trimethylenedipyridine), and (MnSO3)(2)en (4, en = ethylenediamine) that have been synthesized hydrothermally and structurally characterized. In these compounds, low-dimensional 1D and 2D inorganic subunits are assembled into higher 2D or 3D covalent frameworks by organic ligands. In addition to the structure-directing effect of organic ligands, the flexible coordination chemistry of Zn2+ and SO32- also contributes to the observed structural diversity. In compounds 1-3, Zn2+ sites alternate with trigonal pyramidal SO32- anions to form three types of [ZnSO3](n) chains, whereas in compound 4, a 2D-corrugated [MnSO3](n) layer is present. Compound 1 features a rail-like chain with pendant pyridine rings. The pi-pi interaction between 2,2'-bipy ligands is found between adjacent chains in compound 2, resulting in 2D sheets that are further stacked through interlayer hydrogen bonds. Compound 3 exhibits a very interesting inorganic [(ZnSO3)(2)](n) chain constructed from two chairlike subunits, and such chains are bridged by TMDPy ligands into a 2D sheet. In compound 4, side-by-side helical chains permeate through 2D-corrugated [MnSO3](n) layers, which are pillared by neutral ethylenediamine molecules into a 3D framework that can be topologically represented as a (3,6)-connected net. The results presented here illustrate the rich structural chemistry of metal-sulfites and the potential of sulfite anions as a unique structural building block for the construction of novel open-framework materials, in particular, those containing polymeric inorganic subunits that may have interesting physical properties such as low-dimensional magnetism or electronic properties.
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页码:6283 / 6290
页数:8
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