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G. R. Ramkumaar · SciRah

Researcher profile · Semantic Scholar

G. R. Ramkumaar

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G. R. Ramkumaar — researcher profile on SciRah

h-index: 12
Works: 39
Citations: 482

Most-cited papers

FTIR and Thermal Studies on Nylon-66 and 30% Glass Fibre Reinforced Nylon-66
J. Charles, G. R. Ramkumaar, S. Azhagiri, S. Gunasekaran
2009140 citations Open access
Semantic Scholar
Vibrational and electronic investigations, thermodynamic parameters, HOMO and LUMO analysis on Lornoxicam by density functional theory
M. Suhasini, E. Sailatha, S. Gunasekaran, G. R. Ramkumaar
201550 citations
Semantic Scholar
Theoretical and experimental studies of vibrational spectra and thermal analysis of 2-nitroaniline and its cation
S. Azhagiri, G. R. Ramkumaar, S. Jayakumar, S. Kumaresan +3 more
2010Journal of Molecular Modeling24 citations
Semantic Scholar
Natural bond orbital analysis, electronic structure and vibrational spectral analysis of N-(4-hydroxyl phenyl) acetamide: a density functional theory.
P. Govindasamy, S. Gunasekaran, G. R. Ramkumaar
2014Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy21 citations
Semantic Scholar
Ab initio and density functional theory calculations of molecular structure and vibrational spectra of 4-(2-Hydroxyethyl) piperazine-1-ethanesulfonic acid.
J. S. Kumar, T. S. Renuga Devi, G. R. Ramkumaar, A. Bright
2016Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy19 citations
Semantic Scholar
Novel quinoxaline derivatives of 2, 3-diphenylquinoxaline-6-carbaldehyde and 4, 4′-(6-methylquinoxaline-2,3-diyl)bis(N,N-diphenylaniline): Synthesis, structural, DFT-computational, molecular docking, antibacterial, antioxidant, and anticancer studies
J. I. Ahamed, G. R. Ramkumaar, P. Kamalarajan, K. Narendran +5 more
2022Journal of Molecular Structure18 citations
Semantic Scholar
Density functional theory, restricted Hartree-Fock simulations and FTIR, FT-Raman and UV-Vis spectroscopic studies on lamotrigine.
T. Ramya, S. Gunasekaran, G. R. Ramkumaar
2013Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy17 citations
Semantic Scholar
Molecular structure and spectroscopic characterization of Carbamazepine with experimental techniques and DFT quantum chemical calculations.
M. Suhasini, E. Sailatha, S. Gunasekaran, G. R. Ramkumaar
2015Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy15 citations
Semantic Scholar
Molecular geometry, vibrational spectra, atomic charges, frontier molecular orbital and Fukui function analysis of antiviral drug zidovudine.
G. R. Ramkumaar, S. Srinivasan, T. J. Bhoopathy, S. Gunasekaran
2012Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy14 citations
Semantic Scholar
DFT simulations and vibrational spectra of 2-amino-2-methyl-1,3-propanediol.
T. S. Renuga Devi, J. S. Kumar, G. R. Ramkumaar
2014Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy13 citations
Semantic Scholar
Computation and interpretation of vibrational spectra on the structure of Losartan using ab initio and Density Functional methods.
B. Latha, S. Gunasekaran, S. Srinivasan, G. R. Ramkumaar
2014Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy12 citations
Semantic Scholar
Vibrational spectroscopic studies of Isoleucine by quantum chemical calculations.
P. Moorthi, S. Gunasekaran, G. R. Ramkumaar
2014Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy12 citations
Semantic Scholar
Quantum chemical and experimental studies on polymorphism of antiviral drug Lamivudine.
G. R. Ramkumaar, S. Srinivasan, T. J. Bhoopathy, S. Gunasekaran
2012Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy12 citations
Semantic Scholar
Structural, optical, electron paramagnetic, thermal and dielectric characterization of chalcopyrite.
B. Prameena, G. Anbalagan, S. Gunasekaran, G. R. Ramkumaar +1 more
2014Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy11 citations
Semantic Scholar
Vibrational, UV spectra, NBO, first order hyperpolarizability and HOMO-LUMO analysis of carvedilol.
N. Swarnalatha, S. Gunasekaran, M. Nagarajan, S. Srinivasan +2 more
2015Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy10 citations
Semantic Scholar
Vibrational Spectroscopic Studies of Tenofovir Using Density Functional Theory Method
G. R. Ramkumaar, S. Srinivasan, T. J. Bhoopathy, S. Gunasekaran
201310 citations Open access
Semantic Scholar
Analysis on suitability of pure and α-Histidine doped KDP crystals in high speed applications
S. Gunasekaran, G. R. Ramkumaar
200910 citations
Semantic Scholar
Structural and Spectral Studies of Bis (1, 3, 5-triazinane-2, 4, 6-trione) 1, 4-diazabicyclo [2·2·2] Octane (TTDO).
A. Ponnuvel, S. Nivithaa, A. Kala, G. R. Ramkumaar +2 more
2023Journal of Chemical Crystallography9 citations Open access
Semantic Scholar
Quantum chemical density functional theory studies on the molecular structure and vibrational spectra of mannitol.
P. Moorthi, S. Gunasekaran, S. Swaminathan, G. R. Ramkumaar
2015Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy9 citations
Semantic Scholar
Structural and Qualitative Analysis of Lamotrigine
T. Ramya, G. R. Ramkumaar, S. Gunasekaran
20149 citations Open access
Semantic Scholar
Molecular structure, vibrational spectra, UV–vis, NBO, and NMR analyses on nevirapine using ab initio DFT methods
G. R. Ramkumaar, S. Srinivasan, T. J. Bhoopathy, S. Gunasekaran +2 more
20139 citations Open access
Semantic Scholar
Molecular structure, spectroscopic characterization of (S)-2-Oxopyrrolidin-1-yl Butanamide and ab initio, DFT based quantum chemical calculations.
T. Ramya, S. Gunasekaran, G. R. Ramkumaar
2015Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy7 citations
Semantic Scholar
Combined Experimental and Theoretical Investigations on 9-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,9-dihydro-6H-purin-6-one 4-nitrophenol (IPNP) Molecule
R. Kabilan, C. Arunagiri, G. R. Ramkumaar, K. Sathyamoorthy +1 more
2022Journal of Molecular Structure5 citations
Semantic Scholar
DFT analysis on the molecular structure, vibrational and electronic spectra of 2-(cyclohexylamino)ethanesulfonic acid.
T. S. Renuga Devi, J. S. Kumar, G. R. Ramkumaar
2015Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy5 citations
Semantic Scholar
Evaluation of Turnera subulata extract induced AgNPs for antimicrobial, antioxidant, cytotoxic, and anticancer properties against PANC-1
A. Thenmozhi, G. R. Ramkumaar, Justin Thenmozhi, S. Indumathi +3 more
2023Biomass Conversion and Biorefinery4 citations
Semantic Scholar
Vibrational spectroscopic (FT-IR, FT-Raman), NMR and electronic structure calculations of metaxalone
M. Boopathi, P. Udhayakala, G. R. Ramkumaar
20163 citations
Semantic Scholar
Spectroscopic studies and molecular structure investigation on 2-chloro-4-(trifluoromethyl) pyridine: A combined experimentaland DFT analysis
M. Boopathi, P. Udhayakala, G. R. Ramkumaar, T. Rajendiran +1 more
20153 citations
Semantic Scholar
Vibrational spectroscopic studies on 2′-3′-didehydro-2′-3′-dideoxythymidine using density functional theory method
G. R. Ramkumaar, S. Srinivasan, T. J. Bhoopathy, S. Gunasekaran +1 more
20143 citations
Semantic Scholar
Structural, optical, thermal and NLO behavior of zinc hydrogen maleate dihydrate single crystal
S. Karuna, A. Balu, S. Muthu, D. Shyamala +2 more
20182 citations Open access
Semantic Scholar
Spectral analysis and quantum chemical calculations of4-(2-keto-1 -benzimidazolinyl) piperidine
M. Boopathi, P. Udhayakala, G. R. Ramkumaar, T. S. Renuga Devi
20162 citations
Semantic Scholar
(trifluoromethyl) pyridine: A combined experimental and DFT analysis
M. Boopathi, P. Udhayakala, G. R. Ramkumaar, T. Rajendiran +1 more
20152 citations
Semantic Scholar
Quantum chemical studies on structural, vibrational, NBO and hyperpolarizability of N-(1,1-Dimethyl-2-hydroxyethyl)-3-amino-2-hydroxypropanesulfonic acid.
T. S. Renuga Devi, J. S. Kumar, G. R. Ramkumaar
2015Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy2 citations
Semantic Scholar
Correction to: Evaluation of Turnera subulata extract induced AgNPs for antimicrobial, antioxidant, cytotoxic, and anticancer properties against PANC-1
A. Thenmozhi, G. R. Ramkumaar, J. Thenmozhi, S. Indumathi +3 more
2023Biomass Conversion and Biorefinery1 citations Open access
Semantic Scholar
Spectroscopic signature and molecular simulation analysis on the structure of torsemide
B. Latha, S. Gunasekaran, G. R. Ramkumaar, S. Srinivasan
2023INTELLIGENT BIOTECHNOLOGIES OF NATURAL AND SYNTHETIC BIOLOGICALLY ACTIVE SUBSTANCES: XIV Narochanskie Readings0 citations
Semantic Scholar
Experimental and Theoretical Approach Studies for 7- (1,3-Dioxolan-2- yl methyl)-3,7-Dihydro-1,3-Dimethyl-1h-Purine-2,6-Dione Using DFT
M. Suhasini, E. Sailatha, S. Gunasekaran, G. R. Ramkumaar
20180 citations
Semantic Scholar
Spectroscopic characterization and DFT exploration of2-(4-methoxybenzyloxy)-4-methylquinoline
M. Boopathi, P. Udhayakala, G. R. Ramkumaar, T. S. Renuga Devi
20160 citations
Semantic Scholar
Spectroscopic investigation on glutamic acid by Coulomb-attenuating and double hybrid density functional theory methods
G. R. Ramkumaar, M. Shalini, S. Gunasekaran, S. Srinivasan
20150 citations
Semantic Scholar
DENSITY FUNCTIONAL THEORY, RESTRICTED HARTREE- FOCK SIMULATIONS AND FTIR, FT-RAMAN STUDIES ON GABAPENTIN
T. Ramya, S. Gunasekaran, G. R. Ramkumaar
20150 citations
Semantic Scholar
Sustiva(EFV) belongs to the class of the non-nucleoside reverse transcriptase inhibitors. Sustiva(EFV) exerts its action by non-competitive inhibition of the human immunodeficiency virus type 1 (HIV-1) reverse transcriptase. HIV-2 reverse transcriptase and human cellular DNA polymerases are not inhi
G. R. Ramkumaar, T. J. Bhoopathy, S. Gunasekaran, B. Prameena +1 more
20140 citations
Semantic Scholar

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S. Gunasekaran×22
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S. Srinivasan×11
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S. Srinivasan — researcher profile on SciRah
T. S. Renuga Devi×6
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T. J. Bhoopathy×6
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J. S. Kumar — researcher profile on SciRah

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