Web Release Date: March 7,
Solvothermal Synthesis and Structural Characterization of New Zn-Triazole-Sulfoisophthalate Frameworks
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Department of Chemistry, Center for Environmental Molecular Science, and Department of Geosciences, State University of New York at Stony Brook, Stony Brook, New York 11794, and Department of Chemistry, Pace University, New York, New York 10038
Received October 23, 2006
Revised January 16, 2007
Abstract:
Two new Zn-based coordination polymers based polymers, namely, Zn7(TRZ)8(SIP)2·7H2O (1) and Zn5Na2(DMA)4(TRZ)4(SIP)4·5H2O (2) (TRZ = 1,2,4-triazole, SIP = sulfoisophthalate, and DMA = dimethylamine), were synthesized under mild
solvothermal conditions. Their crystal structures were characterized by single-crystal X-ray diffraction, and their thermal properties
were examined by thermogravimetric analysis. Structure 1 crystallizes in monoclinic P21/n space group (a = 14.050(3) Å, b =
12.517(3) Å, c = 15.377(3) Å, 
= 97.95(3)
, V = 2678.3(9) Å3, Z = 2), while structure 2 is described as triclinic P
(a = 9.701(2)
Å, b = 12.442(3) Å, c = 17.218(3) Å, 
= 89.83(3), = 75.01(3), 
= 73.33(3), V = 1917.5(7) Å3, Z = 1). Structure 1 contains
8- and 16-membered channels made of Zn polyhedra linked by TRZ, which are occupied by water molecules and SIP ligands.
Structure 2 consists of one-dimensional chains of Zn-TRZ moieties that are linked to each other via SIP. It is a negatively charged
open framework in which Na+ ions and protonated dimethylamine in the cavities serve as counterions.
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