Journal
CRYSTAL GROWTH & DESIGN
Volume 15, Issue 7, Pages 3182-3189Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.5b00218
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Funding
- MINECO-Spain [PN MAT2012-30994]
- ICREA Funding Source: Custom
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We report the synthesis of two new three-dimensional coordination polymers (CPs) based on Co(II), adenine, and aromatic tetracarboxylate linkers. Adenine exhibits bidentate binding modes in both CPs, coordinating through the N-3 and N-9 sites in a first compact CP and through the more rare N-3 and N-7 sites in a second open, flexible, and H2O-responsive CP. These differences together with an analysis of the extended coordination structures made of adenine reported in the Cambridge Structural Database illustrate the rich coordination versatility of adenine as a building block for CPs. Although the latter CP is nonporous to N-2 or CO2, it shows a reversible and detectable color change from pink to purple, and vice versa, upon hydration and dehydration, respectively.
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