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Browsing by Author "Nagaraja, C.M."

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Acylation of oxindoles using methyl/phenyl estersviathe mixed Claisen condensation – an access to 3-alkylideneoxindoles

Sreedharan, R.; Rajeshwaran, P.; Panyam, P.K.R.; Yadav, S.; Nagaraja, C.M.; Gandhi, T. (2020-12-17)

Predominantly, aggressive acid chlorides and stoichiometric coupling reagents are employed in the acylating process for synthesizing carbonyl tethered heterocycles. Herein, we report simple acyl sources, viz. methyl and ...
Analyses of significant features of l-Prolinium Picrate single crystal: an excellent material for non linear optical applications

Thukral, K.; Vijayan, N.; Vij, M.; Nagaraja, C.M.; Jayaramakrishnan, V.; Jayalakshmy, M.S.; Kant, R. (2017-05-23)

Today the fundamental aspect of the researchers is to explore maximum physical properties of the material for device fabrication. In the present article, single crystal X-ray diffraction has been carried out to verify the ...
Auxiliary ligand-assisted structural variation of Cd(II) metal–organic frameworks showing 2D → 3D polycatenation and interpenetration: synthesis, structure, luminescence properties, and selective sensing of trinitrophenol

Singh, D.; Nagaraja, C.M. (2017-03-10)

Four new metal−organic frameworks (MOFs) of Cd(II) ion, [Cd(fdc)(bipy)1.5](1), [{Cd(fdc)(bpee)1.5}.3(H2O)](2), [Cd(fdc)(3bpdb)- (H2O)](3), and [{Cd2(fdc)2(4bpdb)3}.1.5(4bpdb).2(H2O)](4) (where, fdc = 2,5-furandicarboxylate ...
Construction of 2D interwoven and 3D interpenetrated metal-organic frameworks of Zn(ii) by varying N,N′-donor spacers

Nagaraja, C.M.; Ugale, B.; Chanthapally, A. (2016-11-22)

Four new metal–organic frameworks (MOFs) of Zn(II) ions, [Zn2(muco)2(azopy)2]·3DMF·2H2O (1), [Zn(muco)(bpee)]·4H2O (2), [Zn(muco)(3bpdh)] (3), and [Zn4(muco)4(4bpdh)4]·4bpdh·2H2O (4) (where, muco = trans,trans-muconate ...
Construction of 2D interwoven and 3D metal-organic frameworks (MOFs) of Cd(ii): the effect of ancillary ligands on the structure and the catalytic performance for the knoevenagel reaction

Ugale, B.; Nagaraja, C.M. (2016-11-21)

Three new Cd(ii) metal-organic networks, [{Cd(muco)(bpa)1.5}·H2O] (1), [{Cd(muco)(bpee)1.5}·7H2O] (2) and [Cd(muco)(4bpdh)·(H2O)] (3) (where, muco = trans, trans-muconate dianion, bpa = 1,2-bis(4-pyridyl)ethane, bpee = ...
Construction of 3D lanthanide based MOFs with pores decorated with basic imidazole groups for selective capture and chemical fixation of CO2

Dhankhar, S.S.; Nagaraja, C.M. (2020-12-17)

Three new 3D lanthanide-based metal–organic frameworks (MOFs), [Ln2(ImBDC)3(2H2O)]n (where Ln = Tb3+ (1)/Sm3+ (2)/Eu3+ (3), ImBDC = 2-(imidazol-1-yl)terephthalic acid), have been synthesized solvothermally and characterized ...
Construction of highly water-stable fluorinated 2D coordination polymers with various N, N’-donors: Syntheses, crystal structures and photoluminescence properties

Dhankhar, Sandeep Singh; Nagaraja, C.M. (2020-09-29)

Four new 2D coordination polymers (CPs) of Cd(II), [Cd(tfbdc)(bpy)(H2O)2]n (1) [Cd(tfbdc)(bpe)(H2O)2]n (2), [Cd(tfbdc)(4bpdb)(H2O)2]n (3), and [Cd(tfbdc)(3bpdb)(H2O)2]n (4) (where, tfbdc ¼ 2,3,5,6-tetrafluoro-1,4- benz ...
Design of Bifunctional Zinc(II)–Organic Framework for efficient coupling of CO2 with terminal/internal epoxides under mild conditions

Das, R.; Ezhil, T.; Nagaraja, C.M. (2022-06-23)

The rational design of efficient catalytic materials for conversion of carbon dioxide (CO2), a greenhouse gas into valuable products has fascinated chemists ever since the advent of the area of green and sustainable ...
Design of porphyrin-based frameworks for efficient visible light-promoted reduction of CO2 from dilute gas: Combined experimental and theoretical investigation

Das, R.; Belgamwar, R.; Manna, S S.; Pathak, B.; Polshettiwar, V.; Nagaraja, C.M. (2024-05-01)

The photocatalytic carbon dioxide reduction (CO2R) coupled with hydrogen evolution reaction (HER) constitutes a promising step for a sustainable generation of syngas (CO + H2), an essential feedstock for the preparation ...
Efficient chemical fixation of CO2 from direct air under environment-friendly co-catalyst and solvent-free ambient conditions

Das, R.; Ezhil, T.; Palakkal, A.S.; Muthukumar, D.; Pillai, R.S.; Nagaraja, C.M. (2022-08-18)

The capture and conversion of CO2from direct air into value-added products under mild conditions represents a promising step towards environmental remediation and energy sustainability. Consequently, herein, we report the ...
Efficient photocatalytic generation of hydrogen by twin Zn0.5Cd0.5S nanorods decorated with noble metal-free co-catalyst and reduction of 4-nitrophenol in water

Debnath, B.; Dhingra, S.; Sharma, V.; Krishnan, V.; Nagaraja, C.M. (2021-06-07)

The development of heterostructure photocatalysts composed of homo- or hetero-junction is a favorable approach for efficient visible-light-assisted photocatalytic conversion of solar energy into clean fuel, H2. Further, for ...
Exceptionally stable and 20-connected lanthanide metal−organic frameworks for selective CO2 capture and conversion at atmospheric pressure

Ugale, B.; Dhankhar, S.S.; Nagaraja, C.M. (2018-12-31)

Highly thermal and chemically stable, 20- connected lanthanide metal−organic frameworks (MOFs) [{Ln(BTB)(H2O)}·H2O]n (where Ln = Sm (MOF1)/Gd (MOF2), BTB = 1,3,5-tris (4-carboxy phenyl) benzene) have been synthesized ...
Expedient synthesis of new cinnoline diones by Ru-catalyzed regioselective unexpected deoxygenation-oxidative annulation of propargyl alcohols with phthalazinones and pyridazinone

Rajkumar, S.; Savarimuthu, S.A.; Kumaran, R.S.; Nagaraja, C.M.; Gandhi, T. (2016-11-19)

Ruthenium-catalyzed simple, cascade and one-pot synthesis of cinnoline-fused diones has been carried out by the C–H activation of phthalazinones/pyridazinones accomplished by the unusual deoxygena- tion of ...
Green synthesis of a microporous, partially fluorinated ZnII paddlewheel metal–organic framework: H2/CO2 adsorption behavior and solid-state conversion to a ZnO–C Nanocomposite

Dhankhar, S.S.; Kaur, M.; Nagaraja, C.M. (2016-12-12)

A microporous, partially fluorinated metal–organic framework consisting of ZnII dimeric paddlewheel units, formulated as [Zn(hfipbba)(4bpdb)0.5]·H2O (1) [hfipbba = 4,4- (hexaflouroisopropylene)bis(benzoic acid); 4bpdb ...
Green synthesis, optical and magnetic properties of a MnII metal-organic framework (MOF) that exhibits high heat of H2 adsorption

Dhankhar, S.S.; Nagaraja, C.M. (2016-11-21)

Green synthesis of a 3D, Mn(ii) metal-organic framework (MOF) composed of a trimeric Mn(ii) cluster and NDC linker formulated as [Mn3(NDC)3(DMA)4]n (1) (where, NDC = 2,6 napthalene dicarboxylic acid, DMA = N,N-dimethylacetamide) ...
Highly Efficient Fixation of Carbon Dioxide at RT and Atmospheric Pressure Conditions: Influence of Polar Functionality on Selective Capture and Conversion of CO2

Das, R.; Nagaraja, C.M. (2020-12-17)

The rapid increase in the concentration of atmospheric carbon dioxide (CO2) has resulted in undesirable environmental issues. Hence, selective CO2 capture and utilization as C1 feedstock for the preparation of ...
Highly efficient visible-light-assisted photocatalytic hydrogen generation from water splitting catalyzed by Zn0.5Cd0.5S/Ni2P heterostructures

Dhingra, S.; Nagaraja, C.M. (2018-12-27)

Development of heterostructured photocatalysts which can facilitate spatial separation of photo-generated charge carriers is crucial for achieving improved photocatalytic H2 production. Consequently, herein, we report ...
Highly efficient visible-light-driven reduction of Cr(VI) from water by porphyrin-based metal– organic frameworks: effect of band gap engineering on the photocatalytic activity†

Sharma, N.; Dey, A.K.; Sathe, R.Y.; Kumar, A.; Krishnan, V.; Dhilip Kumar, T.J.; Nagaraja, C.M. (2020-12-11)

Highly efficient visible-light-assisted photocatalytic reduction of Cr(VI) to Cr(III) from water using multifunctional Zr(IV)-porphyrin MOFs, Zr6(μ3-OH)8(OH)8(MTCPP)2, (PCN-222(M)) (M = H2, ZnII, CuII, NiII, CoII, FeIIICl, ...
Interpenetrated metal−organic frameworks of Cobalt(II): structural diversity, selective capture, and conversion of CO2

Ugale, B.; Dhankhar, S.S.; Nagaraja, C.M. (2017-06-20)

Three new metal−organic frameworks (MOFs) of Co(II), [{Co(muco)(bpa)(2H2O)}·2H2O]n (1), [{Co(muco)- (azopy)}·H2O]n (2), and [{Co(muco)(4bpdp)}·2DMF·H2O]n (3) (where, muco = trans, trans-muconate dianion, bpa = ...
A luminescent 3D interpenetrating metal-organic framework for highly selective sensing of nitrobenzene

Singh, D.; Nagaraja, C.M. (2016-11-22)

A three-dimensional (3D), luminescent, 5-fold interpenetrating metal-organic framework (MOF), [Zn2(fdc)2(bpee)2(H2O)]n·2H2O (1) exhibiting highly selective sensing of nitrobenzene (NB) via a fluorescence quenching mechanism ...

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