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Crystals 2015, 5(2), 193-205; doi:10.3390/cryst5020193

Synthesis of Framework Isomer MOFs Containing Zinc and 4-Tetrazolyl Benzenecarboxylic Acid via a Structure Directing Solvothermal Approach

1
Department of Biology and Chemistry, New Mexico Highlands University, Las Vegas, NM 87701, USA
2
Los Alamos National Laboratory, Los Alamos, NM 87545, USA
3
Department of Natural Resources Management, New Mexico Highlands University, Las Vegas, NM 87701, USA
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Lan Li
Received: 29 November 2014 / Revised: 9 February 2015 / Accepted: 16 February 2015 / Published: 2 April 2015
(This article belongs to the Special Issue Metal-Organic Frameworks (MOFs): Energy and Informatics)
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Abstract

The solvothermal synthesis of framework isomers was carried out using the hybrid carboxylate and tetrazolate functional ligand, 4-tetrazolyl benzenecarboxylic acid (H2TBC, TBC = 4-tetrazolyl benzenecarboxylate) and zinc. H2TBC was also synthesized with the solvothermal approach, and is referred herein as structure 1. Using single-crystal X-ray diffraction, we found that the tetrazolate groups of TBC show an unusual “opposite-on” coordination mode with zinc. Three previously characterized metal-organic frameworks (MOFs) were obtained by systematically changing the solvents of the H2TBC-Zn reaction, (1) ZnTBC, 2, which has a non-porous structure; (2) Zn2(TBC)2(H2O), 3, which has an amphiphilic pore structure and (3) Zn2(TBC)2{guest}, 4, which is porous and has channels containing uncoordinated N heteroatoms. Fluorescence spectra of 4 reveal a strong blue emission mainly from the TBC ligands. View Full-Text
Keywords: hybrid ligand; tetrazolate; opposite-on coordination; solvothermal technique hybrid ligand; tetrazolate; opposite-on coordination; solvothermal technique
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ordonez, C.; Kinnibrugh, T.L.; Xu, H.; Lindline, J.; Timofeeva, T.; Wei, Q. Synthesis of Framework Isomer MOFs Containing Zinc and 4-Tetrazolyl Benzenecarboxylic Acid via a Structure Directing Solvothermal Approach. Crystals 2015, 5, 193-205.

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