Infrared Spectroscopic Characterization of Calcium and Barium Hydrazone Complexes

Adeniyi, A. A.; Okedeyi, O.; Aremu, J. A.; Oyedeji, Opeoluwa O.; Sowemimo, Mutiu

doi:10.15228/2013.v03.i02.p04

Cited by 2 publications

(2 citation statements)

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“…0.036 mol (3 g) of 3-amino-1,2,4-triazole was dissolved in 25 ml of methanol and reacted with 25 ml methanolic solution of 0.036 mol (6.95 g) of phthalic anhydride in 250 ml round bottom flask under reflux condition for 4 hr. The resulting light cream precipitate was filtered under suction, washed with methanol, and dried in a vacuum desiccator over silica gel [27]. It was later recrystallized using ethyl acetate and DMF solvent mixture.…”

Section: Atp Atn Ats and Atbtcmentioning

confidence: 99%

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Synthesis And Spectral Characterization Of Triazole-Based Amic Acids

Adeniyi,

Sobola,

Sowemimo

et al. 2022

PJC

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The need to develop synthetic chemical pathways to discover new antimicrobial agents with enhanced activity cannot be over-emphasized. The focus of this study is to synthesize and characterize a set of amic acids containing the 1,2,4triazole nucleus. The amic acids were prepared from one pot addition reaction involving 3-amino-1,2,4-triazole, 3,5diamino-1,2,4-triazole, succinic anhydride, phthalic anhydride, 3-nitrophthalic anhydride, and 3,3'4,4'-benzophenone tetracarboxylic dianhydride. The compounds were characterized by solubility, conductance measurement, CHN microanalyses, 1 H and 13 C NMR, IR, and UV-VIS spectroscopic techniques. The compounds were obtained in high yield, and the spectral data indicate the formation of the N-triazole-based amic acids. The amic acids were nonelectrolytes in DMSO.

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Section: Atp Atn Ats and Atbtcmentioning

confidence: 99%

“…The electronic spectra of the triazole-based amic acids exhibit bands between 270-310 nm. These bands are assigned to n → π* and π → π* transitions of the aromatic and triazole rings, respectively [23,27]. Figure 5 is the UV-VIS spectrum of ATBTC.…”

Section: Infrared and Electronic Spectral Data For The Compoundsmentioning

confidence: 99%

Synthesis And Spectral Characterization Of Triazole-Based Amic Acids

Adeniyi,

Sobola,

Sowemimo

et al. 2022

PJC

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Synthesis and characterization of alkaloid derived hydrazones and their metal (II) complexes

Sowemimo

Adeniyi

2022

Physical Sciences Reviews

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Alkaloids have been known overtime to have medicinal uses. Exploring alkaloid derived hydrazones and their complexes as potential therapeutic agents with a view to improving the medicinal uses of alkaloids are imperative. 1,8-dichloroacridone hydrazone hydrochloride, 1-chloro pilocarpine nitrate-3-chlorophenyl hydrazone and 1-phenethyl-4-piperidone formyl hydrazone ligands were synthesized via Wolff–Kishner condensation reaction. Five metal (II) complexes of cobalt, nickel and manganese were prepared by stirring the ligands with the respective metal salts. The ligands and complexes were characterized using elemental analyses, molar conductivity, FTIR, 1H and 13C nmr, UV–Vis spectra, melting point and solubility. Antimicrobial activities of the ligands and their complexes were tested against four bacteria (Staphylococcus aureus, Streptococcus faecalis Escherichia coli, Salmonella paratyphimurium) and a fungus (Candida albican). The molar conductance values indicate that they are 1:1 and 1:2 type electrolytes while the elemental analyses of the complexes reveals a 1:1 metal to ligand stoichiometry. The relevant IR bands suggest coordination is through the C=N, C=O, N=C–O and C–N groups. Both 1H and 13C nmr corroborated the elemental analysis while the UV–Vis reveals intra-ligand charge transfer while the complexes exhibited the expected metal transitions bands. A proposed octahedral geometry is supported by spectral data. Only 1, 8-dichloroacridonehydrazone hydrochloride ligand was found to be active against all the organisms. Cobalt and nickel complexes of 1,8-dichloroacridonehydrazone hydrochloride were active against S. paratyphimurium and S. aureus, respectively, while cobalt complex of 1-chloropilocarpinenitrate-3-chlorophenylhydrazone was active against S. faecalis and S. paratyphimurium. The minimum inhibitory concentrations (MIC) were also recorded.

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Infrared Spectroscopic Characterization of Calcium and Barium Hydrazone Complexes

Cited by 2 publications

References 1 publication

Synthesis And Spectral Characterization Of Triazole-Based Amic Acids

Synthesis And Spectral Characterization Of Triazole-Based Amic Acids

Synthesis and characterization of alkaloid derived hydrazones and their metal (II) complexes

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