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Journal articles on the topic 'Ir and nmr spectra'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Huda ahmed younis and Raheem Jameel Mahesein. "Synthesis and characterization A derivative of levofloxacin and a study of its bacteriostatic activity." Journal of Kufa for Chemical Sciences 3, no. 1 (2023): 97–125. http://dx.doi.org/10.36329/jkcm/2023/v3.i1.11699.

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This study includes two newly synthesized prodrugs of Levofloxacin derivatives mono and dipeptide H2, where was the Synthesized monoPeptide as Levofloxacin-Histadine (L-H), as well as dipeptide H6 as Synthesis of diPeptide (phenylalanine- levofloxacin (GPA-L), using a Levofloxacin substituted. Spectroscopic data were studied for two derivative compounds H2 and H6 and reactivity indices were characterized using techniques FT-IR, 1H-NMR, and 13C-NMR. All the newly produced derivative compounds H2 and H6 have FT-IR spectra that share similarities in certain fingerprint-like bands and other bands.

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2

Coleman, W. M., Bert M. Gordon, and Brian M. Lawrence. "Examinations of the Matrix Isolation Fourier Transform Infrared Spectra of Organic Compounds: Part XII." Applied Spectroscopy 43, no. 2 (1989): 298–304. http://dx.doi.org/10.1366/0003702894203273.

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Matrix isolation Fourier transform infrared spectra (MI/FT-IR), mass spectra (MS), carbon-13 Nuclear Magnetic Resonance (13C-NMR) spectra, condensed-phase infrared spectra, and vapor-phase infrared (IR) spectra are presented for a series of terpene compounds. Subtle differences in positional and configurational isomers commonly found with terpenes could be easily detected by the MI/FT-IR spectra. The results are comparable in some aspects to those obtainable from 13C-NMR and thin-film IR; however, most importantly, they are acquired at the low nanogram level for MI/FT-IR, as compared to the mi

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3

Thirunarayanan, Ganesamoorthy, S. Pazhamalai, and K. G. Sekar. "Infrared and NMR Spectral Hammett Correlations in 4-(2-Naphthyl)-5,6-Dihydro-6-(Substituted Phenyl)-⁴H-1,3-Oxazine-2-Amines." International Letters of Chemistry, Physics and Astronomy 27 (February 2014): 38–46. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.27.38.

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A series containing ten titled compounds have been synthesised and recorded the IR and NMR spectra. From the spectra the infrared νNH, C=N, C-O-C stretches, NMR chemical shifts of (δ, ppm) NH and C=N were assigned and correlated with Hammett substituent constants, F and R parameters using single regression analysis. From the results, the effects of substituent on the above spectral frequencies were discussed.

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4

Thirunarayanan, Ganesamoorthy, S. Pazhamalai, and K. G. Sekar. "Infrared and NMR Spectral Hammett Correlations in 4-(2-Naphthyl)-5,6-Dihydro-6-(Substituted Phenyl)-<sup>4</sup>H-1,3-Oxazine-2-Amines." International Letters of Chemistry, Physics and Astronomy 27 (February 6, 2014): 38–46. http://dx.doi.org/10.56431/p-f7o365.

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A series containing ten titled compounds have been synthesised and recorded the IR and NMR spectra. From the spectra the infrared νNH, C=N, C-O-C stretches, NMR chemical shifts of (δ, ppm) NH and C=N were assigned and correlated with Hammett substituent constants, F and R parameters using single regression analysis. From the results, the effects of substituent on the above spectral frequencies were discussed.

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5

Jurášek, Adolf, Viktor Badory, Vladimír Žvak, and Jarmila Štetinová. "Synthesis and properties of 2,5-dimethyl-3-furoylthioureas." Collection of Czechoslovak Chemical Communications 56, no. 8 (1991): 1711–18. http://dx.doi.org/10.1135/cccc19911711.

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Addition of a series of aromatic or aliphatic amines to 2,5-dimethyl-3-furoyl isothiocyanate (I) afforded the corresponding N-(2,5-dimethyl-3-furoyl)-N’-aryl- or alkylthioureas II or III. Spectral data (IR, UV, 1H NMR, 13C NMR and mass spectra) of compounds prepared are presented.

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6

Elguero, José, Manuel Gil, Nerea Iza, Carmen Pardo, and Mar Ramos. "FT-IR and 13C-NMR Correlations for Some N-Substituted Azoles and Benzazoles." Applied Spectroscopy 49, no. 8 (1995): 1111–19. http://dx.doi.org/10.1366/0003702953965029.

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The FT-IR (in carbon tetrachloride) and 13C-NMR (in deuterochloroform) spectra of six p-substituted aniline derivatives, as reference compounds, and nine 1- p-aminophenyl-azoles and benzazoles were recorded. The measured spectral parameters from FT-IR were symmetric, vs(NH2), and antisymmetric, vas(NH2), stretching fundamentals and their band intensity ratio, A( vas)/ A( vs), while the corresponding 13C-NMR parameters were C-1 to C-4 chemical shifts of 1- p-aminophenyl carbons. Different IR and 13C-NMR spectral parameters and Hammett constants σp (or σp-) were correlated, and statistic analysi

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7

R., Rajalakshmi, and Elakiya T. "Effect of substituents on infrared, H1 and C13NMR spectra of Schiff's bases derived from Furfuryl amine." International Journal of Trend in Scientific Research and Development 2, no. 2 (2018): 550–54. https://doi.org/10.31142/ijtsrd8380.

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Several substituted Schiff,s bases have been derived from furfuryl amine and their IR, 1H and 13C NMR spectra are recorded. The IR C=N cm 1 , NMR d ppm of CH=N spectral data have been correlated with Hammett substituent constants and Swain Lupton's parameters using single and multi linear regression analysis. From the results of statistical analysis, the effect of substituents on the above spectral data has been studied. R. Rajalakshmi | T. Elakiya "Effect of substituents on infrared, H1 and C13NMR spectra of Schiff's bases derived from Furfuryl amine" Published in Internatio

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8

Thakar, A. S., K. K. Singh, K. T. Joshi, A. M. Pancholi, and K. S. Pandya. "Synthesis, Characterization and Antibacterial Activity of Schiff Bases and their Metal Complexes Derived from 4-Acyl-1-phenyl-3-methyl-2-pyrazolin-5-ones and 2-Amino-4(4'-methylphenyl)-thiazole." E-Journal of Chemistry 7, no. 4 (2010): 1396–406. http://dx.doi.org/10.1155/2010/163264.

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4-Acyl-1-phenyl-3-methyl-2-pyrazolin-5-ones condensed with 2-amino-4(4'-methylphenyl)-thiazole to form Schiff base. These Schiff bases from complexes of type ML22H2O (M=Mn, Fe, Co, Ni and Cu). Elemental analysis, magnetic susceptibility, electrical conductance, electronic and Infrared spectral data suggested octahedral structure for the complexes. All the compounds were tested for their antibacterial activity. The result indicates that the growth of the tested organism was inhibited by most of the compounds. These Schiff bases are characterized by elemental analysis, mass spectra,1H-NMR spectr

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9

Srivastva, Abhay Nanda, Sayanwita Panja, Netra Pal Singh, and Chandra Kiran Shriwastaw. "Bioactive Metal Complexes of Schiff Base Derived from 2,3-Dioxobutane, Ethane-1,2-diamine and 4-Chloro-2-formylphenol: Spectral Studies and in vitro Antimicrobial Activity." Asian Journal of Chemistry 33, no. 12 (2021): 3063–69. http://dx.doi.org/10.14233/ajchem.2021.23478.

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A novel series of trivalent coordination complexes was synthesized by the reaction between a chloride/ acetate salt of iron, chromium, cobalt or manganese ions and NNNNOO type persuasive Schiff base ligand synthesized from 2,3-dioxobutane, ethane-1,2-diamine and 4-chloro-2-formylphenol. Synthesized compounds were characterized by using elemental analysis, molar conductance, magnetic moment, IR, UV-visible, 1H NMR, 13C NMR and ESI-MS spectral analyses. IR and NMR spectra favoured hexadentate coordination behaviour of ligand. Electronic spectra and magnetic moment data reveal Oh geometry with di

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10

Thirunarayanan, Ganesamoorthy. "IR and NMR Spectral Studies of Some 4-(6-methoxy-2-naphthyl)-5,6-dihydro-6-(Substituted Phenyl)-⁴H-1,3-Oxazine-2-Amines: Assessment of Substituent." International Letters of Chemistry, Physics and Astronomy 23 (November 2013): 109–16. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.23.109.

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A series containing thirteen title compounds were synthesized and recorded IR and NMR spectra. The infrared νNH, C=N(cm-1)stretches, 1H NMR δNH, 13C NMR δC=N(ppm) chemical shifts of synthesized oxazine amines were assigned and correlated with Hammett substituent constants, F and R parameters. From the results of statistical analyses, the effect of substituents on the above spectral frequencies can be discussed.

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11

Thirunarayanan, Ganesamoorthy. "IR and NMR Spectral Studies of Some 4-(6-methoxy-2-naphthyl)-5,6-dihydro-6-(Substituted Phenyl)-<sup>4</sup><i>H</i>-1,3-Oxazine-2-Amines: Assessment of Substituent." International Letters of Chemistry, Physics and Astronomy 23 (November 30, 2013): 109–16. http://dx.doi.org/10.56431/p-h1w2ik.

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A series containing thirteen title compounds were synthesized and recorded IR and NMR spectra. The infrared νNH, C=N(cm-1)stretches, 1H NMR δNH, 13C NMR δC=N(ppm) chemical shifts of synthesized oxazine amines were assigned and correlated with Hammett substituent constants, F and R parameters. From the results of statistical analyses, the effect of substituents on the above spectral frequencies can be discussed.

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12

Aleskerova, A., I. Jahangirova, E. Kerimli, and S. Serkerov. "Study of Artemisia kobstanica Sesquiterpene Lactones." Bulletin of Science and Practice, no. 10 (October 15, 2022): 47–53. http://dx.doi.org/10.33619/2414-2948/83/05.

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Sesquiterpene lactones of wormwood Artemisia kobstanica Rzazade from the flora of Azerbaijan were studied for the first time. Three sesquiterpene lactones, C15H18O3, m. p. 171–172 °C (1), C15H20O4, m. p. 124–126 °C (2), C15H18O4, m. p. 202–203 °C (3). Based on physicochemical and spectral (IR and 1H NMR spectra) data, lactones 1 and 3 were identified with α-santonin and artemisinin, respectively. Substance 2 turned out to be new, for the first time isolated from the studied species of wormwood by merezolid. Based on the data obtained from the interpretation of IR and 1H NMR spectra, the struct

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13

Göltl, Florian, Alyssa M. Love, Sarah C. Schuenzel, Patrick Wolf, Manos Mavrikakis, and Ive Hermans. "Computational description of key spectroscopic features of zeolite SSZ-13." Physical Chemistry Chemical Physics 21, no. 35 (2019): 19065–75. http://dx.doi.org/10.1039/c9cp03146d.

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14

Ilyas, Mohammad, Mehtab Perveen, Shafiullah, and Syed Mohmud Ahmad. "A Novel Chalcone from Garcinia Nervosa." Journal of Chemical Research 2002, no. 5 (2002): 231–33. http://dx.doi.org/10.3184/030823402103171799.

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A novel chalcone 5′-bromo-2′-hydroxy-4,4′,6′-trimethoxy-chalcone, isoliquiritigenin-4,4′-dimethyl ether (2′-hydroxy-4,4′-dimethoxy chalcone) and 2′-hydroxy-3,4,4′,6′-tetramethoxy dihydrochalcone have been isolated from the leaves of Garcinia nervosa. Their structure have been elucidated on the basis of chemical and spectral evidences (1H NMR, 13C NMR, HMQC, NOE, IR, UV and mass spectra).

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15

Jaiswal, Amit, Anil Kumar Pal, Dharmendra Kumar Sahu, and Ranjeet Kumar. "Synthesis and characterizations of Hg (II) Complex of Macrocyclic complexes compounds Tetradecahydrodibenzo hexaazacyclooctadecine with HgX2 (X= Cl, Br) by Hirshfeld analysis and antimicrobial activity." Journal of Drug Delivery and Therapeutics 14, no. 3 (2024): 115–21. http://dx.doi.org/10.22270/jddt.v14i3.6476.

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This study examines the synthesis and characterization of a macrocyclic complex molecule having the general formula [M-LX2], where M =Hg (II) with schiff base Tetradecahydrodibenzo hexaazacyclooctadecine ligands. Resulted from the interaction between mercury and the diethyl triamine and benzene- 1, 2 diol in an ethanolic solution. Schiff base and its novel mercury (II) Complexes were studied vibrational in the solid state using spectral, 1H-NMR, IR, UV, and antimicrobial activity approaches. We were able to establish the coordination mode of the metal in complexes by comparing the changes in t

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16

Bley, B., M. Bodenbinder, G. Balzer, et al. "Synthesis and spectroscopic characterization of bis(trifluorophosphinyl)-gold(I) undecafluorodiantimonate(V) [Au(PF3)2][Sb2F11]." Canadian Journal of Chemistry 74, no. 11 (1996): 2392–94. http://dx.doi.org/10.1139/v96-267.

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The synthesis of [Au(PF3)2][Sb2F11], the first example of a linear, thermally stable metal bis(trifluorophosphine) complex is achieved by CO substitution of [Au(CO)2][Sb2F11] by PF3. The [Au(PF3)2]+ cation can also be generated by reductive phosphorylation by an excess of PF3 in fluorosulfuric acid. Spectroscopic characterization involves 19F and 31P NMR in HSO3F and SO2 solution including spectral simulation by the WIN-DAISY method and FT-IR and Raman spectra. Spectroscopic evidence suggests that the metal–ligand bond involves predominantly σ-bonding with drastically reduced π-back-donation.

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17

Şen, Fatih. "Structure determination, vibrational bands and chemical shift assignments of 3-(4-(3-(2,5-dimethylphenyl)-3-methylcyclobutyl)thiazol-2-yl)-2-(o-tolyl)thiazolidin-4-one: A combined experimental and quantum chemical density-functional theory studies." Macedonian Journal of Chemistry and Chemical Engineering 38, no. 2 (2019): 183. http://dx.doi.org/10.20450/mjcce.2019.1679.

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This paper report is an analysis of the title compound by means of X-ray crystallography, FT-IR, NMR and DFT calculations, in the context of structural and spectral characterization. The crystal and molecular structures of the compound were determined by single-crystal X-ray diffraction (SCXRD). Fourier Transform Infrared (FTIR) spectrum was recorded in the range from 400 cm–1 to 4000 cm–1. The 1H and 13C nuclear magnetic resonance (NMR) spectra were also recorded. DFT calculations were employed to support X-ray molecular geometry and calculate IR and NMR (1H and 13C) spectral bands. The struc

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18

D., Hepcy Kalarani, and Venkatesh P. "Isolation of Phytochemical Constituent, Characterization and Pharmacognostic Studies of Stem and Leaves of Alangium Salvifolium Wang." Pharmaceutical and Chemical Journal 4, no. 5 (2017): 89–97. https://doi.org/10.5281/zenodo.13833458.

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Phytochemical constituent from Ethanolic Extract of <em>Alangium Salvifolium</em> [EEAS] was isolated using column chromatography and characterized by various spectroscopic studies such as Infrared (IR) spectra, Nuclear Magnetic Resonance (NMR) spectra and Mass Spectral studies. Results of various spectroscopic studies were interpreted and the interpreted results suggested that the isolated compound may be Di-demethoxyalanginol. Further the plant parts were subjected to Pharmacognostic studies.

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19

Qiu, Fei, Lin Wei, and Chen Yi Lu. "Improve the Synthesis of (S)-1-benzyl-3-pyrrolidinol." Advanced Materials Research 396-398 (November 2011): 1244–47. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1244.

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The synthesis of (S)-1-benzyl-3-pyrrolidinol is described. Starting from L-malic acid and benzylamine, we improved the synthesis of (S)-1-benzyl-3-hydroxypyrrolidine-2, 5-dione via melting reaction, without using any solvent. Followed by reduction with sodium borohydride-iodine in tetrahydrofuran, we synthesized the target compound. We used IR spectra to study the process of the reduction and modified the reaction conditions. It is the first time we reported (S)-1-benzyl-3-pyrrolidinol-borane which is the intermediate of the reduction with sodium borohydride-iodine system, and its spectral dat

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20

Merlic, Craig A., Barry C. Fam, and Michael M. Miller. "WebSpectra: Online NMR and IR Spectra for Students." Journal of Chemical Education 78, no. 1 (2001): 118. http://dx.doi.org/10.1021/ed078p118.

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21

Hashimoto, M., T. Iwamoto, H. Ichida, Y. Sasaki, and T. Kudo. "IR, Raman and 13C NMR spectra of peroxotungstooxalate." Inorganica Chimica Acta 166, no. 1 (1989): 17–20. http://dx.doi.org/10.1016/s0020-1693(00)80779-3.

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22

Mol, V. P. Limna, T. V. Raveendran, P. S. Parameswaran, R. J. Kunnath та P. R. Rajamohanan. "(–)-6α-Hydroxy polyanthellin A — A novel antifouling diterpenoid from the Indian soft coral Cladiella krempfi (Hickson)". Canadian Journal of Chemistry 89, № 1 (2011): 57–60. http://dx.doi.org/10.1139/v10-159.

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Bioassay-guided purification of methanol extract of the soft coral Cladiella krempfi (Octocorallia: Alcynocea) yielded a novel eunicellin-type diterpenoid, (–)-6α-hydroxy polyanthellin A (1), active against the cyprids of the fouling barnacle, Balanus amphitrite (EC50 9.02 µg/mL; LC50 36 µg/mL; and therapeutic ratio = 4). The structure of compound 1 was determined from its spectral data, including IR, NMR (1D and 2D NMR), and mass spectra.

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23

Kretzschmar, J., N. Jordan, E. Brendler, et al. "Spectroscopic evidence for selenium(iv) dimerization in aqueous solution." Dalton Transactions 44, no. 22 (2015): 10508–15. http://dx.doi.org/10.1039/c5dt00730e.

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MP2 predicted IR spectra of different aqueous Se(iv) species revealed features characteristic of the hydrogen selenite dimer, (HSeO<sub>3</sub>)<sub>2</sub><sup>2−</sup>. IR experiments, supported by<sup>77</sup>Se NMR spectra, evidenced the existence of this dimeric species.

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24

Drabińska, Beata, Katarzyna Dettlaff, Tomasz Ratajczak, et al. "Structural and Spectroscopic Properties of Isoconazole and Bifonazole—Experimental and Theoretical Studies." International Journal of Molecular Sciences 24, no. 1 (2022): 520. http://dx.doi.org/10.3390/ijms24010520.

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The paper compares the experimental FT-IR, UV-vis, and 1H NMR spectra of isoconazole and bifonazole with the density functional theory (DFT) calculations using different functionals. The results were compared with previously reported data related to their analogue, posaconazole. The analysis of calculated IR spectra with use of CAM-B3LYP (isoconazole) or B3LYP (bifonazole) functionals shows good accordance with the experimental IR spectrum. The best compatibility between the experimental and theoretical UV spectra was observed with the use of B3LYP or wB97XD functionals for isoconazole or bifo

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25

Rahman, S. M. Mizanur, Shayla Pervin, Md Abdul Quader, and M. Amzad Hossain. "PHYTOCHEMICAL STUDIES OF THE PETROLEUM ETHER EXTRACT OF THE LEAVES OF Lagerstroemia speciosa Linn." Indonesian Journal of Chemistry 9, no. 3 (2010): 500–504. http://dx.doi.org/10.22146/ijc.21523.

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Two new compounds, normal alcohol containing of higher carbons and isomer of β-sitosterol were isolated for the first time from the petroleum extract of the leaves of Lagerstroemia speciosa. The structure of the compound has been established on the basis of UV, IR, 1H-NMR, 13C-NMR and mass spectra and identified as nonanol and isomer of β-sitosterol. Keywords: Lagerstroemia speciosa, petroleum ether extracts, isolation, 1-nonanol, 2 β-sitostero, spectral analyses.

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Naeimi, Hossein, and Mohsen Moradian. "Efficient Synthesis and Characterization of Some Novel Nitro-Schiff Bases and Their Complexes of Nickel(II) and Copper(II)." Journal of Chemistry 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/701826.

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Synthesis and characterization of some new Schiff base ligands derived from various diamines and nitrosalicylaldehyde and their complexes of Ni(II) and Cu(II) are reported. Several spectral techniques such as UV-Vis, FT-IR, and NMR spectra were used to identify the chemical structures of the reported ligands and their complexes. The ligands are found to be bound to the metal atom through the oxygen atoms of the hydroxyl groups and nitrogen atoms of imine groups, which is also supported by spectroscopic techniques. The results obtained by FT-IR and NMR showed that the Schiff base complexes of t

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Veeravel C, Rajasekar K, Balasubramanian S, and Selvarani R. "Green Route Synthesis of Bio-active Cd(II) and Hg(II) Complexes With ‘N’ Donor Novel Schiff base and Oxalate ion." International Journal of Research in Pharmaceutical Sciences 12, no. 2 (2021): 1689–94. http://dx.doi.org/10.26452/ijrps.v12i2.4768.

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Green route synthesis of bio-active diamagnetic Cd(II) and Hg(II) complexes with Schiff base and oxalate ion were synthesized using water as a solvent and characterized by using electronic spectra (UV-visible), Fourier transforms infrared (FT-IR), 1H and 13C-NMR spectroscopy, mass spectra and physical characterization such as CHN analysis, metal estimation and molar conductivity. 1H- and 13C-NMR spectra of ligand complex compared with Schiff base. The complexes have the general formula of ML2X (M= Cd(II) & Hg(II), L-C15H13N, X-C2O4 ) confirmed based on the results of elemental analysis, me

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Samsonowicz, M., E. Regulska, and W. Lewandowski. "Spectroscopic (FT-IR, Raman, NMR) and DFT Quantum Chemical Studies on Phenoxyacetic Acid and Its Sodium Salt." Spectroscopy: An International Journal 27 (2012): 307–13. http://dx.doi.org/10.1155/2012/480282.

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FT-IR, Raman, and NMR spectra of phenoxyacetic acid and its sodium salt were recorded and analyzed. Optimized geometrical structures of studied compounds were calculated by B3LYP/6-311++ method. The atomic charges were calculated by Mulliken, NPA (natural population analysis), APT (atomic polar tensor), MK (Merz-Singh-Kollman method), and ChelpG (charges from electrostatic potentials using grid-based method) methods. Geometric as well as magnetic aromaticity indices, dipole moments, and energies were also calculated. The theoretical wavenumbers and intensities of IR spectra as well as chemical

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Świsłocka, R. "Comparison of molecular structure of alkali metal ortho substituted benzoates." Spectroscopy 24, no. 3-4 (2010): 439–43. http://dx.doi.org/10.1155/2010/848967.

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The influence of the amino-, nitro-, methoxy-, hydroxy- and chloro-substituents in the ortho position towards the carboxylic group as well as alkali metal on molecular structure of benzoates was estimated. Optimized geometrical structures were calculated by B3LYP/6-311++G** method. Experimental FT-IR, FT-Raman and NMR spectra of the title compounds were recorded and analyzed. Data of chemical shifts in1H and13C NMR as well as wavenumbers and intensities in IR and Raman spectra of studied benzoate derivatives were analyzed in comparison with benzoic acid and with alkali metal benzoates.

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K., Krisbnankutty, та Basbeer Ummathur Muhammed. "Metal complexes of unsaturated β-ketoanilides". Journal of Indian Chemical Society Vol. 83, Sep 2006 (2006): 883–87. https://doi.org/10.5281/zenodo.5829939.

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Department of Chemistry, University of Calicut, Calicut-673 635, Kerala, India Department of Chemistry, Unity Women's College, Manjeri-676 122, Kerala, India E-mail: mbummathur@rediffmail.com <em>Manuscript received 31 March 2006, accepted 8 June 2006</em> A new series of β-ketoanilides,in which the keto group attached to olefinic linkage have been synthesized by the reaction of acetoacetanilide and aromatic aldehydes under specified conditions. The existence of these β-ketoanilides predominantly in the intramolecularly hydrogen bonded enol form has been well demonstrated fr

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Selvarani, R., S. Balasubramaniyan, K. Rajasekar, M. Thairiyaraja, and R. Meenakshi. "Synthesis, DFT and Bio-Potential Activities of Mn(II) and Hg(II) Complexes with Bidentate (E)-N′[(E)-3-Phenylallylidene]benzene-1,2-diamine." Asian Journal of Chemistry 33, no. 6 (2021): 1222–28. http://dx.doi.org/10.14233/ajchem.2021.23150.

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A new bidentate Schiff base (E)-N′[(E)-3-phenylallylidene]benzene-1,2-diamine derived from the condensation of o-phenylenediamine and cinnamaldehyde and its Mn(II) and Hg(II) complexes were synthesized and characterized by elemental analysis, molar conductance, magnetic moment, electronic spectra, IR, far-IR and NMR (1H & 13C) spectral studies. The elemental analysis and these metal proposed the metal:ligand stoichiometry and molecular formulae of the metal complexes. The molar conductance and electrochemical property indicates monomeric, neutral nature and redox properties of the metal co

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Milata, Viktor, Dušan Ilavský, Igor Goljer, and Ján Leško. "4-N-Benzazolylamino Derivatives of 3-Y-3-Buten-2-one." Collection of Czechoslovak Chemical Communications 57, no. 3 (1992): 531–39. http://dx.doi.org/10.1135/cccc19920531.

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Ethoxymethylene derivatives of 2,4-pentanedione (Ia), 3-oxobutanenitrile (Ib), methyl (Ic) or ethyl (Id) 3-oxobutanoate give with 4- or 5-aminobenzimidazole or benzotriazole, respectively, under mild conditions products of nucleophilic substitution II-V. Structure of these compounds was discussed on the basis of their spectral measurements - IR, UV, 1H, 13C NMR and mass spectra.

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Ansam.S. Al-battat, Luma Taher Tuma ALbaaj, and T.A.Fahad. "Synthesis, characterization and analytical study of new azo ligand driven from benzocaine and its metal complexes." Journal of Kufa for Chemical Sciences 3, no. 2 (2024): 152–62. http://dx.doi.org/10.36329/jkcm/2024/v3.i2.12600.

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The synthesis and spectrum of of a new azo ligand derived from acetylacetone and benzocaine (Ethyl p-aminobenzoate)). Spectral investigations such as 1H NMR,FT.IR, 13C-NMR and Mass spectra were performed to investigate the azo dye ligand's structure. Several physiochemical approaches, FT-IR, electronic spectra, molar conductivity, atom absorption, and magnetic susceptibility were used to identify new complexes with CO(II), and Zn(II) ions Complexes that are all 1:2 [M:L] were formed using the procedures described, and an tetrahedral geometry with sp3 hybridization. At several pH ranges (2–12),

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Sahebalzamani, Hajar, Shahriare Ghammamy, Shaghayegh Dexhkam, Alireza Hemati Moghadam, and Farhod Siavoshifar. "Synthesis, Characterization and Thermal Analysis of a New Acetic Acid (2-Hydroxy-benzylidene)-hydrazide and its Complexes with Hg(II) and Pd(II)." E-Journal of Chemistry 8, s1 (2011): S13—S18. http://dx.doi.org/10.1155/2011/270304.

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The new complexes have been synthesized by the reaction of Hg(II) and Pd(II) with acetic acid(2-hydroxy-benzylidene)- hydrazide (L). These new complexes were characterized by elemental analysis, IR, H NMR spectroscopy and UV spectral techniques. The changes observed between the FT-IR, H NMR and UV-Vis spectra of the ligands and of the complexes allowed us to establish the coordination mode of the metal in complexes. Thermal properties, TG-DTA of these complexes were studied. TG- DTA and other analytical methods have been applied to the investigation of the thermal behavior and structure of the

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35

S.N., Ipper 1. N.K. Raut 2. P.P. Dixit 3. G.K. Kakade 4. "SYNTHESIS, SPECTRAL STUDY AND PROPERTIES OF (E)-3-(5-BROMOFURAN-2-YL)-1-(2,6-DIHYDROXYPHENYL)PROP-2-EN-1-ONE." Journal of Pharma Research 7, no. 10 (2018): 220–23. https://doi.org/10.5281/zenodo.1468474.

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<strong><em>ABSTRACT</em></strong> <em>(E)-3-(5-bromofuran-2-yl)-1-(2,6-dihydroxyphenyl)prop-2-en-1-one </em><em>was synthesized by  Claisen Schmidt condensation method in alkaline medium. The </em><em>Chalcone of 5-Bromo furfural </em><em>was characterized by IR, UV-Visible, <sup>1</sup>H NMR, Mass spectra, CHO analysis and chemical tests. This is stable solid compound having yellowish brown   color with molecular formula </em><em>[C<sub>13</sub>H<sub>9</sub>O<sub>4</sub>Br]</em><em>.</em> <strong><em>KEYWORDS:</em></strong><em> Chalcone, acetophenone, UV-visible, IR, <sup>1</s

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36

Desalegn, Demise Sage. "Structural Elucidation of Cobalt (II) Complexes of 2-Imino-3-(2- hydroxyphenyl)-1-oxozolodin-4-one and Study of its Antimicrobial Relevance." Medicinal Chemistry 9, no. 2 (2019): 7. https://doi.org/10.4172/2161-0444.1000528.

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Complex of Co(II) with heterocyclic ligand [2-imino-3-(2-hydroxyphenyl)-1-oxazolodin-4-one] has been synthesized and characterized with the help of elemental analysis, magnetic, 1 H-NMR, 13C-NMR, IR and electronic spectral data. IR spectra exhibit the coordination of the ligands to the metal ion through deprotonated phenolic oxygen and heterocyclic nitrogen. All these studies reveal square planar geometry of Co (II) complexes. Synthesized compounds have also been screened against some micro-organisms viz. Escherichia coli, S. aureus, Aspergillus niger and R. bataticola by ‘paper disc&rsq

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37

Nyquist, R. A. "IR and/or NMR Spectra-Structure Correlations for Organophosphorus Compounds." Applied Spectroscopy 42, no. 5 (1988): 854–64. http://dx.doi.org/10.1366/0003702884428932.

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38

Nyquist, R. A. "Infrared and Nuclear Magnetic Resonance Spectra-Structure Correlations for Anisoles." Applied Spectroscopy 45, no. 10 (1991): 1649–51. http://dx.doi.org/10.1366/0003702914335355.

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Spectra-structure correlations are presented for anisoles using IR, NMR, and chemical parameter values which aid in the spectra-structure identification of unknown materials. Spectra-structure correlations also aid in assigning carbon-13 chemical shifts to the correct carbon atom in anisoles.

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39

Engelhardt, Udo, Ursula Diefenbach, and Reinhard Damerius. "Cyclotriphosphazen-2-spiro-3′-cyclodiphosphadiazan und Cyclotriphosphazen-2-spiro-3′-cyclodiphosphadiazan-6′-spiro-2″-cyclotriphosphazen – Spiroverbindungen aus Cyclotriphosphazen und Cyclodiphosphadiazanen / Cyclotriphosphazene-2-spiro-3′-cyclodiphosphadiazane, Cyclotriphosphazene-2-spiro-3′-cyclodiphosphadiazane-6′-spiro-2″-cyclotriphosphazene – Spiro Compounds from Cyclotriphosphazene and Cyclodiphosphadiazanes." Zeitschrift für Naturforschung B 45, no. 4 (1990): 457–60. http://dx.doi.org/10.1515/znb-1990-0408.

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Hexachlorocyclotriphosphazene (Cl2P=N)3 reacts with hydrazine or dihydrazidophosphoric acid O-phenyl-ester in THF in the presence of triethylamine to give the spirocyclic title compounds. Constitutions are confirmed by MS, NMR and IR spectra. {1H}31P NMR spectra at 36.23 MHz are of higher order – ABCD and A2BB′A′2 – and can be simulated with the appropriate shifts and coupling constants.

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40

Mohammed, Hassan A., Shakhawan Beebany, and Umeed Ali. "Binuclear Malonohydrazide Dithiocarbamate Complexes of Ni(II), Pd(II) and Pt(II): Synthesis, Characterization, Antimicrobial Activity, and SEM Studies." Chemistry & Chemical Technology 18, no. 3 (2024): 331–41. http://dx.doi.org/10.23939/chcht18.03.331.

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Binuclear complexes have been prepared with formula [M2L2], where L is potassium 2,2'-malonylbis(hydrazine-1-carbodithioate), M is Ni(II), Pd(II), and Pt(II). Each complex has been characterized by elemental analysis (CHNS), UV-Visible, FT-IR spectra, proton and carbon nuclear magnetic resonance (1H NMR and 13C NMR) spectra, magnetic susceptibility, scanning electron microscopy (SEM), and molar conductivity.

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41

Duan, Zhen Hua, Chang Yu Cheng, Yang Hai, and Ju Lan Wang. "Determination and Identification of Chondroitin Sulfate from Tilapia Byproducts." Advanced Materials Research 690-693 (May 2013): 1318–21. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1318.

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In order to probe the structure of chondroitin sulfate (CS) from tilapia fish, the CS was extracted from tilapia (Oreochromis niloticus) byproducts with the combination of ultrasonic and microwave, some means including high performance liquid chromatography (HPLC), infrared spectra (IR) and nuclear magnetic resonance (NMR) were used in this paper. The data of HPLC exhibited that the obtained chondroitin sulfate is of highly purity (98.78%). IR and NMR spectra indicated that the sample consisted of both chondroitin-4-sulfate and chondroitin-6-sulfate, and the proportion of chondroitin-6-sulfate

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42

Mathers, Nicole J., Zhihong Xu, Susan J. Berners-Price, M. C. Senake Perera, and Paul G. Saffigna. "Hydrofluoric acid pre-treatment for improving 13C CPMAS NMR spectral quality of forest soils in south-east Queensland, Australia." Soil Research 40, no. 4 (2002): 665. http://dx.doi.org/10.1071/sr01073.

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Hydrofluoric acid (HF) was used to pre-treat forest soils of south-east Queensland for assessing the effectiveness of iron (Fe) removal, carbon (C) composition using 13C cross-polarisation (CP) with magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) before and after the HF pre-treatment, and the improvement of 13C CPMAS NMR spectra. Soil samples were collected from 4 experimental sites of different soil types, harvest residue management or prescribed burning, and tree species. More than 86% of Fe was in all soil types removed by the HF treatment. The 13C NMR spectral quality was impro

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43

Abbasi, Mohsen. "Design, preparation and characterization of a new ionic liquid, 1,3-disulfonic acid benzimidazolium chloride, as an efficient and recyclable catalyst for the synthesis of tetrahydropyridine under solvent-free conditions." RSC Advances 5, no. 83 (2015): 67405–11. http://dx.doi.org/10.1039/c5ra10699k.

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In the present work, 1,3-disulfonic acid benzimidazolium chloride as a new ionic liquid, is synthesized, and characterized by studying its FT-IR, <sup>1</sup>H NMR, <sup>13</sup>C NMR as well as mass spectra.

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44

Shaker, Raafat M., Kamal U. Sadek, Ebtisam A. Hafez, and Mohamed Abd Elrady. "5-Aminouracil as a Building Block in Heterocyclic Synthesis: Part IV. One-pot Synthesis of 1H-Pyrrolo[2,3-d]pyrimidine-2,4(3H,7H)-dione Derivatives Using Controlled Microwave Heating." Zeitschrift für Naturforschung B 66, no. 8 (2011): 843–49. http://dx.doi.org/10.1515/znb-2011-0810.

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An efficient and direct procedure for the synthesis of pyrrolo[2,3-d]pyrimidine-2,4-dione derivatives using controlled microwave heating has been described. The products were characterized by elemental analyses, IR, 1H NMR, 13C NMR and MS spectra.

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45

Bobáľ, Pavel, Roman Gažo, Rudolf Kada, Dušan Ilavský, Naďa Prónayová, and Lubomír Zalibera. "Condensation Reactions of 1,2,3,4-Tetrahydro-6-methyl-2,4-dioxo-5-pyrimidinecarbaldehyde." Collection of Czechoslovak Chemical Communications 60, no. 4 (1995): 605–11. http://dx.doi.org/10.1135/cccc19950605.

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Condensation reactions of 1,2,3,4-tetrahydro-6-methyl-2,4-dioxo-5-pyrimidinecarbaldehyde with nine acid derivatives containing an active methylene group are described. The obtained products were characterized by their IR, UV, 1H NMR, 13C NMR and mass spectra. The stereochemistry of selected products was studied by 1H and 13C NMR spectroscopy.

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46

Shaker, Raafat M., Kamal U. Sadek, Ebtisam A. Hafez, and Mohamed Abd Elrady. "5-Aminouracil as a Building Block in Heterocyclic Synthesis: Part III. One-pot Synthesis of Novel Pyrimido[5,4-b]quinoline-2,4,9-triones and Pyrimido[5,4-c]isoquinolines." Zeitschrift für Naturforschung B 65, no. 12 (2010): 1485–90. http://dx.doi.org/10.1515/znb-2010-1212.

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An efficient and direct procedure for the synthesis of pyrimido[5,4-b]quinoline-2,4,9-trione and pyrimido[5,4-c]isoquinoline derivatives has been described. The products were characterized by elemental analyses, IR, 1H NMR, 13C NMR and MS spectra.

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47

Rana, Fazale R., Alan J. Mautone, and Richard A. Dluhy. "Combined Infrared and 31P NMR Spectroscopic Method for Determining the Fractional Composition in Langmuir-Blodgett Films of Binary Phospholipid Mixtures." Applied Spectroscopy 47, no. 7 (1993): 1015–23. http://dx.doi.org/10.1366/0003702934415318.

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A method has been developed to determine the exact fractional composition of binary mixtures of phospholipids at the air/water (A/W) interface by infrared spectroscopy in combination with 31P NMR spectroscopy and Langmuir-Blodgett surface chemistry. This procedure utilizes the wavenumber shift observed upon the synthetic replacement of hydrogen with deuterium in the lipid acyl chains to separate the vibrational bands due to each component in mixtures of deuterated and normally proteated lipids. Classical Langmuir-Blodgett monolayer transfer techniques are used to transfer the binary lipid mixt

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48

Metwally, Mohamed Abbas, and M. A. Sofan. "Synthesis of Some New Pyrrolo Heterocycles of Pharmaceutical Interest from 1,4-Diphenylpyrrolidine-2,3,5-trione+." Zeitschrift für Naturforschung B 45, no. 3 (1990): 382–84. http://dx.doi.org/10.1515/znb-1990-0313.

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Continuing earlier studies designed to obtain derivatives of pharmacological interest, some novel compounds 2, 5, 6, 7 and 8 were prepared using 1,4-diphenylpyrrolidine-2,3,5-trione (1) and 1,2-phenylenediamines, o-aminophenol, 1,3-diphenylacetone and thiosemicarbazide, respectively. The hydrazino derivative (8) was obtained from 7 and hydrazine hydrate. Structural identification was obtained by 1H NMR, mass spectra and IR spectral data.

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Klinot, Jiří, Jiří Rozen, Eva Klinotová та Alois Vystrčil. "A-nor-derivatives of 19β,28-epoxy-18α-oleanane: Preparation and stereochemistry". Collection of Czechoslovak Chemical Communications 52, № 2 (1987): 493–500. http://dx.doi.org/10.1135/cccc19870493.

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19β,28-Epoxy-A(1)-nor-18α-oleanan-3-one (IV) was converted into the A-nor-derivatives V-XII whose structure and configuration was confirmed by chemical reactions and spectral methods. Proton NMR and IR spectra show that the 2α- and 3β-bonds on the five-membered ring A are pseudoaxial whereas the 2β- and 3α-bonds are pseudoequatorial.

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50

Nyquist, Richard A. "IR and/or NMR Spectra-Structure Correlations for Organonitrogen-Containing Compounds." Applied Spectroscopy 42, no. 4 (1988): 624–34. http://dx.doi.org/10.1366/0003702884429193.

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