Formation Constants and Thermodynamic Parameters of Transition Metal Chelates Derived from Schiff Base of 4-Benzoyl- 1-(p-nitrophenyl)-3-methyl-2-pyrazolin-5-ones with Some Diamines.
Corresponding Author(s) : A.K. RANA
harishdhabi_2004@yahoo.co.in
Asian Journal of Chemistry,
Vol. 21 No. 9 (2009): Vol 21 Issue 9
Abstract
Stability constants and thermodynamic data of Mn2+, Co2+, Ni2+,
Cu2+ and Zn2+ chelates of Schiff base of 4-benzoyl-1-(p-nitrophenyl)-3-
methyl-2-pyrazolin-5-ones with ethylene diamine, m-phenylene diamine,
benzidine have been determined at 25 and 35 °C in 70:30 (v/v) dioxanewater
media and 0.1 M KNO3, using Calvin-Bjerrum technique as
applied by Irving and Rossotti. The stability constants at both the temperatures
is found to be Mn < Co < Ni < Cu > Zn for all systems. ΔG, ΔH,
and ΔS for the complexation have been derived.
Keywords
Potentiometric study
Formation constant
Thermodynamic
parameters
Transition metal chelates
4-Benzoyl-1-(p-nitro
phenyl)-3-methyl-2-pyrazolin-5-ones
Schiff base
DABHI, H., RANA, A., BHOI, D., VORA, N., RAI, R., & PANDYA, R. (2010). Formation Constants and Thermodynamic Parameters of Transition Metal Chelates Derived from Schiff Base of 4-Benzoyl- 1-(p-nitrophenyl)-3-methyl-2-pyrazolin-5-ones with Some Diamines. Asian Journal of Chemistry, 21(9), 6629–6635. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/12249
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