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Coordination Polymers as a Functional Material for the Selective Molecular Recognition of Nitroaromatics and ipso-Hydroxylation of Arylboronic Acids.
Rani, Pooja; Husain, Ahmad; Bhasin, K K; Kumar, Girijesh.
Affiliation
  • Rani P; Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
  • Husain A; Department of Chemistry, DAV University Jalandhar, Punjab, 144012, India.
  • Bhasin KK; Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
  • Kumar G; Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
Chem Asian J ; 17(2): e202101204, 2022 Jan 17.
Article in En | MEDLINE | ID: mdl-34792296
We report the synthesis and structural characterization of two coordination polymers (CPs), namely; [{Zn(L)(DMF)4 } ⋅ 2BF4 ]α (1) and [{Cd(L)2 (Cl)2 } ⋅ 2H2 O]α (2) (where L=N2 ,N6 -di(pyridin-4-yl)naphthalene-2,6-dicarboxamide). Crystal packing of 1 reveals the existence of channels running along the b- and c-axis filled by the ligated DMF and lattice anions, respectively. Whereas, crystal packing of 2 reveals that the metallacycles of each 1D chain are intercalating into the groove of adjacent metallacycles resulting in the stacking of 1D loop-chains to form a sheet-like architecture. In addition, both 1 and 2 were exploited as multifunctional materials for the detection of nitroaromatic compounds (NACs) as well as a catalyst in the ipso-hydroxylation of aryl/heteroarylboronic acids. Remarkably, 1 and 2 showed high fluorescence stability in an aqueous medium and displayed a maximum 88% and 97% quenching efficiency for 4-NPH, respectively among all the investigated NACs. The mechanistic investigation of NACs recognition suggested that the fluorescence quenching occurred via electron as well as energy transfer process. Furthermore, the ipso-hydroxylation of aryl/heteroarylboronic acids in presence of 1 and 2 gave up to 99% desired product yield within 15 min in our established protocol. In both cases, 1 and 2 are recyclable upto five cycles without any significant loss in their efficiency.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Polymers / Water Language: En Journal: Chem Asian J Year: 2022 Document type: Article Affiliation country: India Country of publication: Germany

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Polymers / Water Language: En Journal: Chem Asian J Year: 2022 Document type: Article Affiliation country: India Country of publication: Germany