The thermal and spectral properties of trans-[chloro-bis(dimethylglyoximato)Co(III)] complexes containing heterocyclic donor ligands

Nayak, Suprava; Das, Pratulananda; Sahoo, K. K.

doi:10.1016/s0165-2370(03)00041-x

Cited by 12 publications

(7 citation statements)

References 10 publications

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“…The diffraction peaks can be indexed to be CoQ 2 . 22,24 The component of the nanostructures was further identified with an FT-IR spectrum. As indicated in Fig.…”

Section: Spectra Characterizations Of Cobalt(ii)-bis(8hydroxyquinolin...mentioning

confidence: 99%

Synthesis of highly luminescent cobalt(ii)-bis(8-hydroxyquinoline) nanosheets as isomeric aromatic amine probes

2009

Nanoscale

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Highly luminescent and water-soluble cobalt(ii)-bis(8-hydroxyquinoline) (CoQ(2)) nanosheets have been successfully synthesized via a simple, rapid sonochemical method. The water-soluble CoQ(2) nanosheets were characterized by luminescence spectroscopy, UV-vis spectroscopy, FT-IR spectroscopy and transmission electron microscopy (TEM). The CoQ(2) nanosheets allow highly sensitive and selective determination of p-nitroaniline via fluorescence quenching. Under optimal conditions, the relative fluorescence intensities of nanosheets decreased linearly with increasing p-nitroaniline. However, the sensitivity of CoQ(2) nanosheets toward other aromatic amines including o-diaminobenzene, m-diaminobenzene, p-diaminobenzene, p-toluidine, o-nitroaniline, m-nitroaniline, p-chloroaniline and aniline is negligible. It is found that p-nitroaniline can quench the luminescence of CoQ(2) nanosheets in a concentration-dependent manner that is best described by a Stern-Volmer-type equation. The possible underlying mechanism is discussed.

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“…The diffraction peaks can be indexed to be CoQ 2 . 22,24 The component of the nanostructures was further identified with an FT-IR spectrum. As indicated in Fig.…”

Section: Spectra Characterizations Of Cobalt(ii)-bis(8hydroxyquinolin...mentioning

confidence: 99%

Synthesis of highly luminescent cobalt(ii)-bis(8-hydroxyquinoline) nanosheets as isomeric aromatic amine probes

2009

Nanoscale

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“…In addition, on the complexes the bands of ν(C=N) and ν(C=N-O) were shifted to the lower frequencies by 43-6 and 16-6 cm -1 . This type of coordination is usual in the complexes, as the ligand forms six-member chelate ring by coordinating with metal ions through the N and O atoms 1,3,14 . The infrared spectrum of N-acetylglycine shows absorption band at 3380 cm -1 which belongs to the ν(NH).…”

Section: Infrared Spectramentioning

confidence: 99%

“…This signal was shifted downfield between 9.30-9.61 ppm on coordination. Moreover, the δ for imine carbon exhibited at 154 ppm in free ligand of D. On the complexes this signal was shifted up field by 0.9-0.55 ppm [1][2][3] .…”

Section: Infrared Spectramentioning

confidence: 99%

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Preparation and Spectral Properties of Mixed‐Ligand Complexes of VO(IV), Ni(II), Zn(II), Pd(II), Cd(II) and Pb(II) with Dimethylglyoxime and N‐acetylglycine

Shaker

2010

Journal of Chemistry

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A number of mixed-ligand complexes of the general formula [M(D)(G)] where D=dimethylglyoximato monoanion, G=N-acetylglycinato and M=VO(IV), Ni(II), Zn(II), Pd(II), Cd(II) and Pb(II) were prepared. Each complex was characterized by elemental analysis, determination of metal, infrared spectra, electronic spectra, (1H and13C) NMR spectra, conductivity and magnetic moments. All these complexes were not soluble in some of the organic solvent but highly soluble in dimethylformamide. The conductivity data showed the non-electrolytic nature of the complexes. The electronic spectra exhibited absorption bands in the visible region caused by the d-d electronic transition such as VO(IV), Ni(II) and Pd(II). The IR and (1H,13C) NMR spectra which have indicate that the dimethylglyoxime was coordinated with the metal ions through the N and O atoms of the oxime group andN-acetylglycine was coordinated with metal ions through the N atom and terminal carboxyl oxygen atom.

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“…Probably in this new form, the benzotriazole moiety coordinates two cobalt ions simultaneously. Further heating to 350 °C removes the benzotriazolyl moieties completely <2003JPY699> . The first step of decomposition can be summarized as follows:

where dmgH = dimethylglyoxime anion, BtH = benzotriazole.…”

Section: Thermodynamic Aspectsmentioning

confidence: 99%

1,2,3-Triazoles

Rachwał

Katritzky

2008

Comprehensive Heterocyclic Chemistry III

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The thermal and spectral properties of trans-[chloro-bis(dimethylglyoximato)Co(III)] complexes containing heterocyclic donor ligands

Cited by 12 publications

References 10 publications

Synthesis of highly luminescent cobalt(ii)-bis(8-hydroxyquinoline) nanosheets as isomeric aromatic amine probes

Synthesis of highly luminescent cobalt(ii)-bis(8-hydroxyquinoline) nanosheets as isomeric aromatic amine probes

Preparation and Spectral Properties of Mixed‐Ligand Complexes of VO(IV), Ni(II), Zn(II), Pd(II), Cd(II) and Pb(II) with Dimethylglyoxime and N‐acetylglycine

1,2,3-Triazoles

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