Synthesis, structure, and properties of monomeric Fe(II), Co(II), and Ni(II) complexes of neutral N-(aryl)-2-pyridinecarboxamides

Jacob, Wilson; Mukherjee, Rabindra Nath

doi:10.1016/j.ica.2006.07.003

Cited by 36 publications

(24 citation statements)

References 73 publications

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“…Magnetic moment value for the Ni(II) complex is 3.37 BM, which is near to the expected range for octahedral geometry around the central metal ion [23]. Magnetic moment of the Cu(II) complex, 1.38 BM, is lower than the expected value for the S = 1/2 system.…”

Section: Magnetic Momentsmentioning

confidence: 54%

“…505, 438 and 433 nm absorptions for the Fe(II), Ni(II) and Co(II) complexes, respectively, can be accepted CT transitions. On the other hand, the shoulders at 459 nm for the Ni(II) complex and 462 nm for the Co(II) complex, and the weak absorption at 605 nm in the Fe(II) complex may be related with their octahedral structures [23,34].…”

Section: Uv-visible Spectramentioning

confidence: 99%

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Synthesis, characterization and antimicrobial activity of some transition metal complexes of N-(5-chloro-2-hydroxyphenyl)-3-methoxy-salicylaldimine

Gürbüz¹,

Çınarli²,

Tavman

et al. 2015

Bull. Chem. Soc. Eth.

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ABSTRACT. Cr(III), Fe(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II) complexes of N-(5-chloro-2-hydroxyphenyl)-3-methoxy-salicylaldimine (H2L), an ONO type tridentate ligand, were synthesized and characterized by elemental analysis, magnetic moment, molar conductivity, TGA, NMR, IR, UV-vis. and ESI-MS spectral techniques. All of the complexes except [Zn(L)(H2O)2] are paramagnetic. The CoCl2 gives a complex with 1:2 M:L ratio while the others form 1:1 non-ionic complexes with H2L. The ligand coordinated to the metal ions through the both OH oxygen and the azomethine nitrogen atoms acting tridentate behaviour. Octahedral geometry has been proposed for the Fe(II), Cr(III), Co(II), Ni(II) complexes considering the magnetic moment values and the electronic spectral data. The Zn(II) and Fe(III) complexes exhibit five coordination geometries and the Cu(II) complex is four-coordinated having acetato bridged dimeric structure. Antimicrobial activities of the compounds were determined against six bacteria and C. albicans as fungi. The Ni(II) and Co(II) complexes exhibit considerable selective activity on S. epidermidis and C. albicans whereas the ligand has no activity on the microorganisms. In addition, the Cr(III) complex shows antibacterial activity toward S. epidermidis and the Zn(II) complex has antifungal activity on C. albicans.

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Section: Magnetic Momentsmentioning

confidence: 54%

Section: Uv-visible Spectramentioning

confidence: 99%

Synthesis, characterization and antimicrobial activity of some transition metal complexes of N-(5-chloro-2-hydroxyphenyl)-3-methoxy-salicylaldimine

Gürbüz¹,

Çınarli²,

Tavman

et al. 2015

Bull. Chem. Soc. Eth.

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“…The anionic ligand 2,6-pyridine bis-amide, with N,N 0 -donor atoms, is able to stabilize first row metal ions in high (equal or greater than ?3) oxidation states due to its strong sigma-donor capability [11]. The N,O-coordination mode, in turn, has been demonstrated crystallographically for the complexes with V(IV) [12], Fe(II), Co(II), [13], Ni(II) [13,14], Ni(III) [15], Cu(II) [15,16], Co(II) [17], and Zn(II) [17]. On the other hand, for the Co(II) picolinamide complex, a monodentate structure has also been postulated based on the spectrophotometric/ potentiometric studies (N 0 -complex in Scheme 2) [18].…”

Section: Introductionmentioning

confidence: 90%

Tricarbonyltechnetium(I) and tricarbonylrhenium(I) complexed with N-methyl-2-pyridinecarboxyamide as potential radiopharmaceuticals: a computational study

2010

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The electronic and thermodynamic properties of the '2 ? 1' tricarbonyltechnetium(I) and -rhenium(I) mixed ligand complexes with N-methylpyridine-2-carboxyamide (MPCA) as a bidentate ligand and chloride, water, or tert-butyl-3-isocyanopropanoate (BCP), were investigated within the framework of Density Functional Theory. The atomic charges of all complexes, polarization of the CO groups, as well as the effect of transfer of p-electron density between the ligands through the metal were calculated and compared. The free energies of the reaction of formation of the isocyanide complexes in aqueous solution were calculated based on calculated total free energies in aqueous solution of the products and the substrates. The dissociation energies of the complexes were also determined in order to rationalize the experimentally observed higher resistance of the rhenium compared to the technetium complexes in the challenge experiments with the standard sulfur-containing amino acids.

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“…For general background to metal-organic complexes with pyridyl carboxamide ligands, see: Noveron et al (2002); Zhang et al (2002); Mondal et al (2004); Jacob & Mukherjee (2006). For related structures and the synthesis of the title ligand, see: Shi et al (2007Shi et al ( , 2008.…”

Section: Related Literaturementioning

confidence: 99%

Bis[N-(4-chlorophenyl)pyridine-3-carboxamide]silver(I) nitrate

Shi

Liu

2010

Acta Cryst E

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In the title compound, [Ag(C12H9ClN2O)2]NO3, two N atoms from two pyridine rings of two N-(4-chlorophenyl)pyridine-3-carboxamide ligands coordinate to the AgI atom, forming a nearly linear geometry with an N—Ag—N angle of 173.41 (7)°. The crystal structure is stabilized by N—H⋯O, C—H⋯O and C—H⋯Cl hydrogen bonds and π–π stacking interactions [centroid–centroid distance = 3.5469 (16) Å] between the pyridyl and benzene rings. The shortest Ag⋯Ag distance is 3.2574 (5) Å.

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Synthesis, structure, and properties of monomeric Fe(II), Co(II), and Ni(II) complexes of neutral N-(aryl)-2-pyridinecarboxamides

Cited by 36 publications

References 73 publications

Synthesis, characterization and antimicrobial activity of some transition metal complexes of N-(5-chloro-2-hydroxyphenyl)-3-methoxy-salicylaldimine

Synthesis, characterization and antimicrobial activity of some transition metal complexes of N-(5-chloro-2-hydroxyphenyl)-3-methoxy-salicylaldimine

Tricarbonyltechnetium(I) and tricarbonylrhenium(I) complexed with N-methyl-2-pyridinecarboxyamide as potential radiopharmaceuticals: a computational study

Bis[N-(4-chlorophenyl)pyridine-3-carboxamide]silver(I) nitrate

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