Premium
Adenine‐Based Coordination Polymers: Synthesis, Structure, and Properties
Author(s) -
Sushrutha S. R.,
Hota Raghunandan,
Natarajan Srinivasan
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201600111
Subject(s) - chemistry , metal ions in aqueous solution , coordination polymer , selectivity , crystal structure , metal , inorganic chemistry , medicinal chemistry , catalysis , crystallography , organic chemistry
A solvothermal reaction of metal nitrate (M = Zn, Cd), cyclohexanedicarboxylic acid, and adenine resulted in the isolation of three new coordination polymers, [Zn 4 (1,4‐CHDA) 2.5 (ad) 3 · 2H 2 O] 7H 2 O 2DMA (CHDA = cyclohexane dicarboxylic acid, ad = adenine, DMA = dimethylacetamide), I , [Cd 3 (1,4‐CHDA) 2 (ad) 2 · H 2 O], II , [Cd(1,2‐CHDA)(9‐HEA) · H 2 O] 4H 2 O [9‐HEA = 9‐(2‐hydroxyethyl)adenine], III . Single‐crystal structural studies show that compounds I and II have three‐dimensional structures whereas III has a two‐dimensional one. The formation of a Cd 8 macrocycle in II , based on a polyhedral arrangement, appears to be new. In all the compounds, the amino group of the adenine appears to be free and can be utilized for the detection of explosives such as nitrophenol, dinitrophenol, and trinitrophenols. The hydroxyl nitro aromatics appears to have a much stronger influence on the luminescence behavior of the compounds with very low detection limits. This, in fact, provides a new opportunity for exploring these compounds for the detection of harmful nitro aromatics in solution. The present compounds also exhibit considerable sensitivity towards metal ion detection, especially Fe 2+ /Fe 3+ , Cr 3+ , Ag + , and Hg 2+ ions in solution. Base‐catalyzed Knoevenagel condensation studies exhibit good conversion and selectivity.