Solvothermal Synthesis and Structural Characterization of Ultralight Metal Coordination Networks

Title
Solvothermal Synthesis and Structural Characterization of Ultralight Metal Coordination Networks
Authors
D. Banerjee김선진L. A. BorkowskiWenqian XuJ. B. parise
Keywords
MOF; Lithium; Ultralight Metal; Solvothermal
Issue Date
2010-03
Publisher
Crystal growth & design
Citation
VOL 10, NO 2, 709-715
Abstract
Two lithium-based coordination polymers and a framework Li3(C7H3O4N)2· 0.21(H2O) (C2H8N) [1]; ULCP-1 (ULCP=ultralight coordination polymer); Li3(C7H3O4N)·(C6H3O2N) [2]; [ULCP-1A]; and Li2(C7H3O4N) [3]; ULMOF-4 (ULMOF=ultralight metal organic framework) were synthesized using solvothermal techniques. The compounds were characterized using single-crystal X-ray diffraction methods and thermal analysis techniques. Compound [1] [space groupP21/c, a=11.51(2) Å, b=15.33(3) Å, c=10.93(2) Å, β=99.98(3)°] consists of trimeric corner- and edge-sharing lithium tetrahedral chains. Organic linkers connect each of these chains to form a two-dimensional (2-D) layered structure. Positively charged dimethyl amine (DMA) molecules and sites partially occupied by water molecules are present between the layers. Compound [2] [space group P21/c, a=10.190(2) Å, b=13.390(3) Å, c=10.450(2) Å, β=106.02(3)°] contains trimeric clusters of cornerand edge-sharing lithium tetrahedra. Each of these clusters is connected by the organic linkers to form an overall 2-D structure. Compound [3] [space group C2/c, a=12.692(2)Å, b=10.977(2)Å, c=11.200(2)Å, β=105.83(3)°] consists of edge- and corner shared one-dimensional (1-D) chains of lithium tetrahedra. The lithium polyhedral chains are then connected by the organic linkers to form a dense three-dimensional (3-D) network. All compounds are stable above 300 ℃ underN2 atmosphere, with [3] stable to 550 ℃.
URI
http://pubs.kist.re.kr/handle/201004/37267
ISSN
1528-7483
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KIST Publication > Article
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