Catechol oxidations. Characterization of metal complexes of 3,5-di-tert-butyl-1,2-quinone 1-(2-hydroxy-3,5-di-tert-butylphenyl)imine formed by the aerial oxidation of 3,5-di-tert-butylcatechol in the presence of ammonia and divalent metal ions

1975 ◽  
Vol 14 (11) ◽  
pp. 2724-2727 ◽  
Author(s):  
Amal Y. Girgis ◽  
Alan L. Balch
Keyword(s):  
Metal Ions ◽  
Metal Complexes ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
Tert Butyl ◽  
Aerial Oxidation

scholarly journals Synthesis and Characterization of a NewN"-[(1Z,2E)-2- (Hydroxyimino)-1-phenylpropylidene]-N"'-[(1E)-phenylmethylene]thiocarbonohydrazide and its Complexes with Co(II), Ni(II) and Cu(II)

2010 ◽  
Vol 7 (2) ◽  
pp. 409-418
Author(s):  
Dilip C. Sawant ◽  
A. Venkatchallam ◽  
R. G. Deshmukh
Keyword(s):  
Electrical Conductivity ◽  
Metal Ions ◽  
Metal Complexes ◽  
Magnetic Measurements ◽  
Divalent Metal ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
Divalent Metal Ions ◽  
First Time

Synthesis and characterization of a newN"-[(1Z,2E)-2- (Hydroxyimino)-1-phenylpropylidene]-N"'-[(1E)-phenylmethylene]thiocarbonohydrazide and its metal complexes with Co(II), Ni(II) and Cu(II) metal ions. The ligand synthesis and characterization is reported for first time. The complexes of divalent metal ions were synthesized in 1:2 molar proportion using ethanol as solvent. The ligands as well as its metal complexes were characterized using various physicochemical techniques such as elemental analysis, spectral and magnetic measurements and electrical conductivity measurements in case of the metal complexes only. The data for the metal complexes reveals that they may be represented by ML2. The metal complexes show interesting features of coordination structure.

Synthesis and characterization of bis(imino)pyridine complexes of divalent Mg and Zn

2016 ◽  
Vol 45 (14) ◽  
pp. 5989-5998 ◽  
Author(s):  
Thomas W. Myers ◽  
Tobias J. Sherbow ◽  
James C. Fettinger ◽  
Louise A. Berben
Keyword(s):  
Electronic Structure ◽  
Metal Ions ◽  
Torsion Angle ◽  
Divalent Metal ◽  
Synthesis And Characterization ◽  
Divalent Metal Ions ◽  
Structural Comparison ◽  
Bond Lengths ◽  
Pyridine Complexes

The synthesis and electronic structure of bis(imino)pyridine (I2P) complexes of the divalent metal ions, Zn(ii) and Mg(ii) are reported, and a correlation between the ligand Cim–Cpy bond lengths with the ligand torsion angle is described. Structural comparison with a new complex of Al(iii) and previously reported Al(iii) complexes is included.

Stability constants and spectral studies of complexes of 2-hydroxy-5-methylazobenzene-2′-carboxylic acid with some divalent metal ions

1984 ◽  
Vol 62 (11) ◽  
pp. 2299-2301
Author(s):  
C. Mahalingam ◽  
J. K. Sthapak ◽  
D. D. Sharma ◽  
R. L. Tiwari ◽  
Smita Sthapak
Keyword(s):  
Carboxylic Acid ◽  
Metal Ions ◽  
Metal Complexes ◽  
Stability Constants ◽  
Divalent Metal ◽  
Reflectance Spectra ◽  
Spectral Studies ◽  
Divalent Metal Ions ◽  
The Stability

The stability constants of metal complexes of 2-hydroxy-5-methylazobenzene-2′-carboxylic acid have been determined spectrophotometrically. These follow the Irving–Williams sequence: log KOH(H) = 10.67, log K1(Co) = 9.02, log K1(Ni) = 9.68, log K1(Cu) = 13.37, log K1(Zn) = 7.58, and [Formula: see text]The chelates of Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II), and [Formula: see text] with the dye have been prepared and characterized on the basis of their ir and reflectance spectra.

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