scholarly journals Cu(II), Cd(II) and Ni(II) Complexes of 5-Bromosalicylaldehyde-4-hydroxybenzhydrazone: Synthesis and Spectral Studies

2017 ◽  
Vol 16 (2) ◽  
pp. 1-10
Author(s):  
Geo Reji ◽  
P S Amrutha ◽  
M R Greeshma ◽  
Lincy Tom ◽  
M R P Kurup
Keyword(s):  
Infrared Spectra ◽  
Spectral Studies ◽  
Neutral Form ◽  
Physico Chemical ◽  
Elemental Analyses ◽  
Chemical Studies ◽  
Dianionic Form

Four complexes of 5-bromosalicylaldehyde-4-hydroxybenzhydrazone were synthesized and characterized by elemental analyses, electronic, and infrared spectra.  In all complexes, hydrazone exists either in the neutral form, deprotonated monoanionic form or in dideprononated dianionic form.  Structures were assigned to all the complexes based on the physico-chemical studies.

scholarly journals Physico-Chemical Studies on the Coordination Compounds of Thiazolidin-4-One

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Dinesh Kumar ◽  
Amit Kumar ◽  
Jyoti Sharma
Keyword(s):  
Coordination Compounds ◽  
Benzene Solution ◽  
Molar Conductance ◽  
Mercaptoacetic Acid ◽  
Donor Ligand ◽  
Physico Chemical ◽  
Square Planar ◽  
Elemental Analyses ◽  
Ir Reflectance ◽  
Chemical Studies

A dry benzene solution of the Schiff base,N-(2-hydroxyphenyl)-3′-carboxy-2′-hydroxybenzylideneimine upon reacting with mercaptoacetic acid undergoes cyclization and formsN-(2-hydroxyphenyl)-C-(3′-carboxy-2′-hydroxyphenyl)thiazolidin-4-one, LH3(I). A MeOH solution ofIreacts with , , , and Mo ions and forms the monomeric coordination compounds, [Mn(LH)(MeOH)3] (II), [Cu(LH)(MeOH)] (III), [Zn(LH)(MeOH)] (IV), [FeCl(LH)(MeOH)2] (V), and [MoO2(LH)(MeOH)](VI). The coordination compounds have been characterized on the basis of elemental analyses, molar conductance, molecular weight, spectral (IR, reflectance, ESR) studies, and magnetic susceptibility measurements.Ibehaves as a dibasic tridentate OOS donor ligand in these compounds. The compounds are nonelectrolytes ( = 6.2–13.8 mho cm2 mol−1) in DMF. A square-planar structure forIII; a tetrahedral structure forIVand an octahedral structure forII,V, andVIare suggested.

Design, synthesis and physico-chemical studies of a Co(II)/Co(III) mixed-valence complex: An experimental and DFT approach.

2021 ◽  
pp. 130384
Author(s):  
Intissar Hamdi ◽  
Noureddine Mhadhbi ◽  
Noureddine Issaoui ◽  
Andreas Roodt ◽  
Mark M. Turnbull ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Design Synthesis ◽  
Physico Chemical ◽  
Chemical Studies ◽  
Mixed Valence Complex
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