Thermal, spectral and magnetic properties of 2-hydroxy-1,4-naphthoquinone monoximates of Ho(III), Er(III) and Yb(III)

Jagtap, Soham; Chikate, Rajeev C.; Yemul, Omprakash S.; Ghadage, R. S.; Kulkarni, B. A.

doi:10.1023/b:jtan.0000042172.51676.7f

Cited by 19 publications

(9 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is plausible that intermolecular hydrogen bonding associations through coordinated water molecules may also be a decisive factor for the stability and strength of metal-ligand bonding. The energies of activation for present series of complexes are significantly lower than those reported earlier for lanthanide complexes of quinone derivatives [6,7,20] implying that the thermally stable binuclear nature is destroyed during the 2nd step. These parameters also suggest that the Table 2 Thermal and kinetic data of lanthanide chelates of isnphth…”

Section: Thermal Studiescontrasting

confidence: 70%

“…The lowering in the room temperature magnetic moment values probably indicate the presence of antiferromagnetic interactions between the lanthanide pairs through ligand bridges in the complexes [4][5][6][7].…”

Section: Resultsmentioning

confidence: 99%

“…In continuation of our earlier efforts in understanding the coordination properties of quinone towards lanthanides, we have reported the thermal decomposition patterns of lanthanide chelates of naphthoquinones [6,7] wherein it was observed that the complex molecules are strongly held through the extensive network of intermolecular hydrogen bonding contacts involving coordinated water molecules and bound naphthoquinone ligands. The present communication describes the thermal and spectral properties of lanthanide chelates of 2,3-dihydroxy-1,4-naphthoquinone (Fig.…”

Section: Introductionmentioning

confidence: 97%

“…Even though, the coordination chemistry of transition metal-quinone complexes has been the subject of exploration for variety of purposes [2,3]; it is rather surprising that there are relatively few reports on the structural propensities of lanthanides-quinone chelates. For example, there are reports on the polymeric complexes with anthraquinone [4] and embelin [5], amino-naphthoquinone [6] and halolawsone-monoximes [7].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Binuclear lanthanide complexes of 2,3-dihydroxy-1,4-naphthoquinone

Khandagale

Chikate

Joshi

et al. 2005

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Thermal Studiescontrasting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Binuclear lanthanide complexes of 2,3-dihydroxy-1,4-naphthoquinone

Khandagale

Chikate

Joshi

et al. 2005

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…Thermal data and kinetic parameters of the coordination polymers are given in Tables 3 and 4 removal of ligand (H 2 L) during decomposition leaves free metal for Ni and Zn [37,38] or metal oxides for Mn, Co and Cu as the final residue.…”

Section: The Thermal Behavior Of the Prepared Coordination Polymersmentioning

confidence: 99%

Coordination Polymeric Chain Assemblies of Some Metal Ions with BHQPP

Panchani

Kharadi

Patel

2009

International Journal of Polymeric Materials

View full text Add to dashboard Cite

A few coordination chain polymeric assemblies of the type [M(H 2 L)(H 2 O) 2 ] n Á xH 2 O [where M ¼ Mn(II), Cu(II) and Zn(II) x ¼ 1; Co(II) and Ni(II) x ¼ 2, H 2 L ¼ 2,2 0 -bis-4-[(8-hydroxy-5-quinoline methylenoxy) phenyl] propane] (BHQPP) have been investigated. Structural and spectroscopic properties have been determined by elemental analyses, infrared spectra, electronic spectra, magnetic measurements and thermogravimetric analyses. Magnetic moment and reflectance spectral studies reveal that an octahedral geometry is present in all the prepared coordination polymers. The kinetic parameters such as order of reaction (n) and the energy of activation (Ea) were determined using the Freeman-Carroll method. The pre-exponential factor (A), the activation entropy (DS # ), the activation enthalpy (DH # ) and the free energy of activation (DG # ) have been calculated.

show abstract

Antituberculosis, antifungal and thermal activity of mixed ligand transition metal complexes

Kharadi

Patel

Dholakiya

2010

Applied Organom Chemis

View full text Add to dashboard Cite

Mixed-ligand complexes of the type [M(CQ)(Ph)(OH)(H 2 O)], where M = Cu(II), Ni(II), Co(II) and Mn(II), have been investigated. Furthermore, there has been some additional work investigating the effect of metal ions on biological activity. Aiming to obtain novel transition metal complexes that exhibit biological activity, we have synthesized mixed ligand complexes using clioquinol (5-chloro-7-iodo-8-hydroxyquinoline) and 1,10-phenanthroline as ligands. The compounds were characterized using IR, FAB mass spectroscopy, elemental analyses, electronic spectra, magnetic measurements and gravimetric analyses. The kinetic parameters such as order of reaction, the energy of activation, the pre-exponential factor, activation entropy, activation enthalpy and free energy of activation have been reported. The complexes show antituberculosis and antifungal (minimal inhibitory concentration) activities.

show abstract

Thermal, spectral and magnetic properties of 2-hydroxy-1,4-naphthoquinone monoximates of Ho(III), Er(III) and Yb(III)

Cited by 19 publications

References 36 publications

Binuclear lanthanide complexes of 2,3-dihydroxy-1,4-naphthoquinone

Binuclear lanthanide complexes of 2,3-dihydroxy-1,4-naphthoquinone

Coordination Polymeric Chain Assemblies of Some Metal Ions with BHQPP

Antituberculosis, antifungal and thermal activity of mixed ligand transition metal complexes

Contact Info

Product

Resources

About