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

Crystals

Carlos Ordonez³  Tiffany L. Kinnibrugh³  Hongwu Xu²  Jennifer Lindline¹  Tatiana Timofeeva³  Qiang Wei³ 

[1] Department of Natural Resources Management, New Mexico Highlands University, Las Vegas, NM 87701, USA; E-Mail:;Los Alamos National Laboratory, Los Alamos, NM 87545, USA; E-Mail:;Department of Biology and Chemistry, New Mexico Highlands University, Las Vegas, NM 87701, USA; E-Mails:

关键词: hybrid ligand;    tetrazolate;    opposite-on coordination;    solvothermal technique;   

DOI  :  10.3390/cryst5020193

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.