Coordination compounds of transition metal hydrazine derivatives. Part 25. Monohydrazine-S-methylcarbodithioate schiff bases derived from ?-dicarbonyl compounds

1982 ◽  
Vol 7 (3) ◽  
pp. 158-163 ◽  
Author(s):  
Ahmed El-Toukhy ◽  
Mohyi El-Essawi ◽  
Mohga Tawfik ◽  
Laila El-Sayed ◽  
Magdi F. Iskander
Keyword(s):  
Transition Metal ◽  
Schiff Bases ◽  
Coordination Compounds ◽  
Dicarbonyl Compounds ◽  
Hydrazine Derivatives

Hydrazine Derivatives of β-Dicarbonyl Compounds, Part I. Studies on Some Benzoylacetaldehyde Aroylhydrazones

1978 ◽  
Vol 33 (12) ◽  
pp. 1527-1534 ◽  
Author(s):  
Latif Rateb ◽  
B. Azmy ◽  
M. A. Nashed ◽  
M. F. Iskander
Keyword(s):  
Schiff Bases ◽  
Nmr Spectra ◽  
Open Chain ◽  
Dicarbonyl Compounds ◽  
Hydrazine Derivatives ◽  
H Nmr ◽  
Imine Form ◽  
Derivatives Of

Abstract A series of benzoylacetaldehyde benzoylhydrazones were prepared and characterised. Their UV, IR, and 1H NMR spectra suggest the enol-imine structure rather than the keto-imine form of analogous Schiff bases. The pKa values of these aroylhydrazones were also measured and correlated with the Hammet substitution constants. Attempted cyclizations of these open-chain aroylhydrazones afforded the corresponding 5-hydroxy-2-pyrazoline compounds rather than the expected pyrazoles.

scholarly journals Correlation between the structure and biological activity of some coordination compounds of isatin Schiff bases

2003 ◽  
Vol 57 (10) ◽  
pp. 444-448 ◽  
Author(s):  
Blaga Radovanovic ◽  
Sandra Konstantinovic
Keyword(s):  
Antimicrobial Activity ◽  
Biological Activity ◽  
Transition Metal ◽  
Schiff Bases ◽  
1H Nmr ◽  
Elemental Analysis ◽  
Coordination Compounds ◽  
Molar Conductivity ◽  
Enhanced Activity

The complexes of Co(ll), Ni(ll), Cu(ll) and Zn(ll) with isatin Schiff bases were synthetised and their structures established by using elemental analysis, as well as by measuring the molar conductivity, AA, FTIR, UV/VIS and 1H NMR and applying TG analysis.Isatin Schiff bases show different antimicrobial activity due to the different nature of the carbonyl and amino components as well as its substituent. The complexes have an enhanced activity compared to the ligands due to the transition metal involved in the coordination. It is also evident that the complexes have different antimicrobial activity, which is related to the nature and typeof coordinated metal.

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