Premium
Assembly of 3D Coordination Polymers from 2D Sheets by [2+2] Cycloaddition Reaction
Author(s) -
Medishetty Raghavender,
Tandiana Rika,
Koh Lip Lin,
Vittal Jagadese J
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201304246
Subject(s) - cycloaddition , ligand (biochemistry) , pyridine , chemistry , cyclobutane , fluorescence , polymer , metal , metal organic framework , yield (engineering) , derivative (finance) , polymer chemistry , materials science , organic chemistry , catalysis , ring (chemistry) , biochemistry , physics , receptor , adsorption , quantum mechanics , economics , metallurgy , financial economics
The synthesis of three 2D interdigitated Zn II coordination polymers (CPs), by using three monotopic ligands containing CC bonds, is reported. Among these, two CPs with 4spy (4‐styryl pyridine) and 2F‐4spy (a 2′‐fluoro derivative of 4spy) ligands showed quantitative formation of cyclobutane rings, thus demonstrating a unique synthetic procedure to synthesize metal–organic frameworks (MOFs) by using this photochemical reaction. Interestingly, these compounds can also be synthesized by mechanochemical grinding procedures by using Zn(OAc) 2 . In contrast, Zn(NO 3 ) 2 did not yield the required product, unlike in the solution route. In addition, compounds with 4vpy (4‐vinylpyridine), 4spy and 2F‐4spy ligands created different units in the CPs; 4vpy and 2F‐4spy furnished paddle wheel units, whereas 4spy yielded tetrahedral Zn II repeating units. Furthermore, the change in coordination geometry manifests in the photoluminescence properties, attributed to the difference in charge‐transfer and ligand‐centered fluorescent phenomenon.