Structural, spectral and antimicrobial studies of copper(II) complexes of 2-benzoylpyridine N(4)-cyclohexyl thiosemicarbazone

Joseph, Marthakutty; Suni, V.; Kurup, M.R. Prathapachandra; Nethaji, Munirathinam; Kishore, Archana; Bhat, Sarita G.

doi:10.1016/j.poly.2004.09.026

Cited by 115 publications

(52 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The m(C@N) band of the semicarbazone at 1600 cm À1 undergoes a negative shift of wavenumber in the complexes indicating coordination via azomethine nitrogen. This has been confirmed by the bands in the 410-440 cm À1 range and it is assignable to the m(Cu-N) band [22,23]. A strong band found at 1132 cm À1 is assigned to the m(N-N) band of the semicarbazone.…”

supporting

confidence: 57%

Synthesis, spectral characterization and crystal structure of copper(II) complexes of 2-benzoylpyridine-N(4)-phenylsemicarbazone

et al. 2011

View full text Add to dashboard Cite

(9) of 2-benzoylpyridine-N(4)-phenyl semicarbazone (HL) have been synthesized and physico-chemically characterized. The tridentate character of the semicarbazone is inferred from IR spectra. Based on the EPR studies, spin Hamiltonian and bonding parameters have been calculated. The g values, calculated for all the complexes in frozen DMF, indicate the presence of the unpaired electron in the d x 2 Ày 2 orbital. The structure of the compound, [Cu 2 L 2 (OAc) 2 ] (1a) has been resolved using single crystal X-ray diffraction studies. The crystal structure revealed monoclinic space group P2 1 /n. The coordination geometry about the copper(II) in 1a is distorted square pyramidal with one pyridine nitrogen atom, the imino nitrogen, enolate oxygen and acetate oxygen in the basal plane, an acetate oxygen form adjacent moiety occupies the apical position, serving as a bridge to form a centrosymmetric dimeric structure.

show abstract

supporting

confidence: 57%

Synthesis, spectral characterization and crystal structure of copper(II) complexes of 2-benzoylpyridine-N(4)-phenylsemicarbazone

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Strong band found at 1068 cm -1 in the ligand is assigned to ν(N-N). The increase in the frequency of this band in the spectra of complexes is due to increase in bond strength, again confirming the coordination via azomethane nitrogen [Joseph et al, 2004). In complexes, the presence of new bands at 481 cm -1 and 447 cm -1 are assigned to ν(Cu-N) and ν(Ni-N), respectively.…”

Section: Infrared Spectral Analysissupporting

confidence: 57%

Synthesis, spectroscopic characterization and biological applications of Cu(II) and Ni(II) complexes with 2-butyl-4-chloro-5-formylimidazole thiosemicarbazone

Reddy¹,

Krishna²,

Rashmi³

et al. 2016

J App Pharm Sci

View full text Add to dashboard Cite

Cu(II) and Ni(II) complexes of 2-butyl-4-chloro-5-formylimidazole thiosemicarbazone (L) are synthesized and characterized by using spectroscopic techniques like elemental analysis, FT-IR, mass spectrometry, electronic and EPR spectra. The complexes are found to have characteristic electronic spectra and the geometry of the complexes are identified as octahedron. Both the complexes are found to exhibit similar anti-microbial activity against the gram -ve and gram +ve bacteria. Anti-cancer activity against the cancer cell lines (MDA-MB 231 cell lines) among the compounds studied for % of viability, the inhibition concentration 50 values were shown by Cu(II)-L complex at 80 g/ml and by Ni(II)-L complex at 100 g/ml.

show abstract

“…The values of the N 2 AN 3 and N 3 AC 11 bond distances of 1.379(2) and 1.362(3) Å, respectively, indicate significant delocalization of p-electron density over the hydrazone portion of the molecule. The torsion angle values, À179.54(19)°and 1.9(3)°attained by N 3 AN 2 AC 10 AC 9 and N 2 AN 3 AC 11 AO 1 , suggest the existence of the ligand in trans configuration along the C 10 AN 2 bond and in cis form along the C 11 AN 3 bond [44][45][46]. The existence of C 10 AN 2 bond in trans configuration, rules out the possibility of intramolecular N 3 AHÁ Á ÁN 1 hydrogen bonding.…”

Section: Methodsmentioning

confidence: 93%

Vibrational spectroscopic studies and computational study of quinoline-2-carbaldehyde benzoyl hydrazone

Sheeja

Mangalam

Kurup

et al. 2010

Journal of Molecular Structure

View full text Add to dashboard Cite

a b s t r a c tFT-IR spectrum of quinoline-2-carbaldehyde benzoyl hydrazone (HQbÁH 2 O) was recorded and analyzed. The synthesis and crystal structure data are also described. The vibrational wavenumbers were examined theoretically using the Gaussian03 package of programs using HF/6-31G(d) and B3LYP/6-31G(d) levels of theory. The data obtained from vibrational wavenumber calculations are used to assign vibrational bands obtained in infrared spectroscopy of the studied molecule. The first hyperpolarizability, infrared intensities and Raman activities are reported. The calculated first hyperpolarizability is comparable with the reported values of similar derivatives and is an attractive object for future studies of non-linear optics. The geometrical parameters of the title compound obtained from XRD studies are in agreement with the calculated values. The changes in the CAN bond lengths suggest an extended p-electron delocalization over quinoline and hydrazone moieties which is responsible for the non-linearity of the molecule.

show abstract

Structural, spectral and antimicrobial studies of copper(II) complexes of 2-benzoylpyridine N(4)-cyclohexyl thiosemicarbazone

Cited by 115 publications

References 35 publications

Synthesis, spectral characterization and crystal structure of copper(II) complexes of 2-benzoylpyridine-N(4)-phenylsemicarbazone

Synthesis, spectral characterization and crystal structure of copper(II) complexes of 2-benzoylpyridine-N(4)-phenylsemicarbazone

Synthesis, spectroscopic characterization and biological applications of Cu(II) and Ni(II) complexes with 2-butyl-4-chloro-5-formylimidazole thiosemicarbazone

Vibrational spectroscopic studies and computational study of quinoline-2-carbaldehyde benzoyl hydrazone

Contact Info

Product

Resources

About