Construction of a 2D rectangular grid and 3D diamondoid interpenetrated frameworks and their functionalities by changing the second spacers

Kanoo, Prakash ; Maji, Tapas Kumar (2010) Construction of a 2D rectangular grid and 3D diamondoid interpenetrated frameworks and their functionalities by changing the second spacers European Journal of Inorganic Chemistry, 2010 (24). pp. 3762-3769. ISSN 1434-1948

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Official URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/ej...

Related URL: http://dx.doi.org/10.1002/ejic.201000362

Abstract

Three new metal–organic ZnII frameworks, {[Zn(bipy)(1,4‐ndc)(H2O)2]·2H2O} (1), {[Zn(bpe)(1,4‐ndc)]2·2DMF} (2), {[Zn(bpee)(1,4‐ndc)]2·2DMF} (3) [bipy = 4,4′‐bipyridyl, 1,4‐ndc = 1,4‐naphthalenedicarboxylate, bpe = 1,2‐bis(4‐pyridyl)ethane, bpee = 1,2‐bis(4‐pyridyl)ethylene], have been synthesized by using mixed‐ligand systems under solvothermal conditions and characterized structurally by single‐crystal X‐ray diffraction. Compound 1 has a 2D structure with 44‐sql net topology, whereas 2 and 3 have a 3D diamondoid structure with interesting fourfold interpenetrated topology. Topological analyses of the diamondoid nets in compounds 2 and 3 reveal a 4‐connected net with 66 topology. Thermogravimetric experiments suggest that the solvent‐free compounds 1–3 are stable up to 370, 330, and 280 °C, respectively. The grids of 1 stack in –ABCD– fashion without any regular channel structure. Desolvated compound 2 (2′) selectively adsorbs CO2 over N2, and such discrimination is regulated by the restricted window dimension of the channels. Solvent vapor (H2O, MeOH, and EtOH) adsorption studies with 2′ suggest a hydrophobic nature of the pore surface. Gas and vapor adsorption studies with 3′ reveal no uptake, which can be correlated to a smaller pore size relative to the kinetic diameter of the respective adsorbates.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons, Inc.
Keywords:Zinc; Metal–Organic Frameworks; Crystal Engineering; Diamondoid; Interpenetration; Adsorption
ID Code:114573
Deposited On:29 May 2018 11:14
Last Modified:29 May 2018 11:14

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