Coordinatively unsaturated 5-nitroisophthalate based cobalt(<scp>ii</scp>) coordination polymers: efficient catalytic CO<sub>2</sub> fixation and Hantzsch condensation

Sahoo, Subham; Patra, Rajesh; Sarma, Debajit

doi:10.1039/d4ce00102h

CrystEngComm

2024

DOI: 10.1039/d4ce00102h

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Coordinatively unsaturated 5-nitroisophthalate based cobalt(ii) coordination polymers: efficient catalytic CO₂ fixation and Hantzsch condensation

Subham Sahoo,

Rajesh Patra,

Debajit Sarma

Abstract: Two 5-Nitroisophthalate (NIPA) based cobalt(II) coordination polymers [Co(4-ABPT)(NIPA)(H2O)3], SSICG-6 (4-ABPT = 3,5-di(pyridine-4-yl)-4H-1,2,4-triazol-4-amine, SSICG stands for Solid-State and Inorganic Chemistry Group) and [Co(4-ABPT)(NIPA)(H2O)], SSICG-7, have been synthesized using mixed ligand approach....

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Cited by 3 publications

References 60 publications

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Coordinatively Unsaturated Structurally Diverse Homophthalate-Based Cobalt(II) Coordination Polymers for Efficient Multicomponent Catalysis

Sahoo,

Patra,

Sarma

2024

Crystal Growth & Design

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Coordination polymers (CPs) have emerged as pioneering compounds due to their diverse structural features and tunable properties. Numerous structural advantages, along with thermal and chemical stability, make CPs promising materials for various applications, preferably in catalysis. Herein, four CPs (HHPA) 2 ]•H 2 O, SSICG-16 (SSICG stands for solid-state and inorganic chemistry group, 4-ABPT = 3,5-di(pyridine-4-yl)-4H-1,2,4triazol-4-amine, H 2 HPA = homophthalic acid, and BPY = 4,4′bipyridine) have been synthesized via the hydrothermal synthetic methodology. SSICG-8 showcases a 4,4-net topology with a Schlafli symbol of 4 4 .6 2 , while SSICG-10 displays a 3,3-net topology. Herein, we have tuned the catalytic performance by tuning the Lewis acidic open metal sites (OMSs), Lewis basic sites, and porosity of the compounds. Activated SSICG-8 and SSICG-9 have Lewis acidic open metal sites (OMSs) and basic free amine and pyridyl groups. The presence of Lewis acidic high-density OMSs, free basic amine groups, and porosity makes SSICG-9 an efficient catalyst, whereas SSICG-8 lacks porosity, SSICG-10 lacks basic sites, and SSICG-16 lacks OMSs. These structural features were clearly visible in the observed catalytic efficiency order of SSICG-16 < SSICG-10 < SSICG-8 < SSICG-9. The most efficient catalyst, SSICG-9, was employed to synthesize Nemadipine B (1,4-dihydropyridine-based drug) with a 95% yield at 60 °C, using only 1.5 mol % within 4 h in ethanol. This study presents a systematic strategy for synthesizing coordination polymers and showcasing their efficacy in catalysis under mild and environmentally friendly conditions.

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Coordinatively Unsaturated Structurally Diverse Homophthalate-Based Cobalt(II) Coordination Polymers for Efficient Multicomponent Catalysis

Sahoo,

Patra,

Sarma

2024

Crystal Growth & Design

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Stoichiometry-Regulated Synthesis of Three Adenine-Based Coordination Polymers for Catalytic Excellence through the Synergistic Amalgamation of Coordinative Unsaturation and Lewis Basic Sites

Patra,

Sahoo,

Deepanshu

et al. 2024

Inorg. Chem.

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Nucleobase adenine is a promising candidate for synthesizing fascinating coordination polymers (CPs) due to the presence of five potential metal-ion binding centers. In recent years, CPs have emerged as promising Lewis acid−base centers containing heterogeneous catalysts for a wide range of organic transformations. However, the crucial role of stoichiometric regulations of the starting materials and their consequential impact on catalytic performance are rarely studied. Herein, we have synthesized three adenine (Ad)-based cadmium CPs with 5-nitro isophthalic acid (H 2 NIPA) by a mixed linker approach by tuning the substrate's stoichiometric proportion. The single-crystal X-ray diffraction analysis of the synthesized CPs, SSICG-11,DMF, reveals that these three compounds exhibit distinct asymmetric units, each reflecting varying precursor proportions. Due to their high chemical stability and the presence of both Lewis acidic−basic sites, SSICG-11−13 were employed as heterogeneous catalysts for Hantzsch and Strecker reactions. However, SSICG-12 is more efficient due to its capacity to form an open metal sites (OMSs) and the presence of a higher number of adenine moieties. Overall, this study demonstrated the stoichiometrically controlled synthesis of adenine-based CPs and dissected their efficiency as a heterogeneous catalyst by correlating their structures and compositions.

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Stimulus-responsive multifunctions in a zinc(ii) sulfate complex: photochromism, photoswitching nonlinear optical properties, amine detection and visual film application

Liang,

Yan,

Wen

et al. 2025

J. Mater. Chem. C

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Coordinatively unsaturated 5-nitroisophthalate based cobalt(ii) coordination polymers: efficient catalytic CO₂ fixation and Hantzsch condensation

Cited by 3 publications

References 60 publications

Coordinatively Unsaturated Structurally Diverse Homophthalate-Based Cobalt(II) Coordination Polymers for Efficient Multicomponent Catalysis

Coordinatively Unsaturated Structurally Diverse Homophthalate-Based Cobalt(II) Coordination Polymers for Efficient Multicomponent Catalysis

Stoichiometry-Regulated Synthesis of Three Adenine-Based Coordination Polymers for Catalytic Excellence through the Synergistic Amalgamation of Coordinative Unsaturation and Lewis Basic Sites

Stimulus-responsive multifunctions in a zinc(ii) sulfate complex: photochromism, photoswitching nonlinear optical properties, amine detection and visual film application

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Coordinatively unsaturated 5-nitroisophthalate based cobalt(ii) coordination polymers: efficient catalytic CO2 fixation and Hantzsch condensation

Cited by 3 publications

References 60 publications

Coordinatively Unsaturated Structurally Diverse Homophthalate-Based Cobalt(II) Coordination Polymers for Efficient Multicomponent Catalysis

Coordinatively Unsaturated Structurally Diverse Homophthalate-Based Cobalt(II) Coordination Polymers for Efficient Multicomponent Catalysis

Stoichiometry-Regulated Synthesis of Three Adenine-Based Coordination Polymers for Catalytic Excellence through the Synergistic Amalgamation of Coordinative Unsaturation and Lewis Basic Sites

Stimulus-responsive multifunctions in a zinc(ii) sulfate complex: photochromism, photoswitching nonlinear optical properties, amine detection and visual film application

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Product

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Coordinatively unsaturated 5-nitroisophthalate based cobalt(ii) coordination polymers: efficient catalytic CO₂ fixation and Hantzsch condensation