Publication:
Conductometric Studies of the Thermodynamics for Complexation of 1,1-Diethyl-3-(4-methoxybenzoyl)thiourea and Cobalt(II) Cation in Aqueous Binary Mixtures of Polar Organic Solvents

Simple item page
dc.contributor.authorSuhud, Ken_US
dc.contributor.authorHeng, LYen_US
dc.contributor.authorRezayi, Men_US
dc.contributor.authorAl-Abbasi, AAen_US
dc.contributor.authorHasbullah, SAen_US
dc.contributor.authorAhmad, Men_US
dc.contributor.authorKassim, MBen_US
dc.date.accessioned2024-05-29T02:56:50Z
dc.date.available2024-05-29T02:56:50Z
dc.date.issued2015
dc.description.abstractThe complexation reaction of Co2+ (M) and the 1,1-diethyl-3-(4-methoxybenzoyl)thiourea (L) ligand in the binary mixtures: acetonitrile-dimethylsulfoxide (MeCN-DMSO), acetonitrile-dichloromethane (MeCN-DCM), water-dimethylsulfoxide (H2O-DMSO) and acetonitrile-water (MeCN-H2O), was investigated using a conductometric method at temperatures of (288.15, 298.15, 308.15 and 318.15) K. In all cases, the conductance data showed that the stoichiometry of the neutral complex formed between M and L is 1:3 [M:3L], which indicates that the Co2+ ion was oxidized to Co3+ during the reaction. The best estimate of the stability constant, log(10) K (f), = 3.31 for the [CoL3] complex, was observed with the MeCN-DCM (20:80 %) binary mixture at 298.15 K. The values of the thermodynamic parameters (i.e., and ) for the formation of the [CoL3] complex were obtained from the temperature dependence of the stability constant via van't Hoff plots. The results show that, in most cases, the [CoL3] complexes are enthalpy destabilized but entropy stabilized. The values and signs of the thermodynamic parameters are affected by the nature and composition of the mixed solvents but are independent of the temperature.
dc.identifier.doi10.1007/s10953-015-0308-2
dc.identifier.epage192
dc.identifier.isbn1572-8927
dc.identifier.issn0095-9782
dc.identifier.issue2
dc.identifier.scopusWOS:000350660600002
dc.identifier.spage181
dc.identifier.urihttps://oarep.usim.edu.my/handle/123456789/11606
dc.identifier.volume44
dc.languageEnglish
dc.language.isoen_US
dc.publisherSpringer/Plenum Publishersen_US
dc.relation.ispartofJournal Of Solution Chemistry
dc.sourceWeb Of Science (ISI)
dc.subjectBenzoylthioureaen_US
dc.subjectCobalt(II)en_US
dc.subjectConductometryen_US
dc.subjectBinary solvent mixtureen_US
dc.subjectvan't Hoffen_US
dc.subjectThermodynamicsen_US
dc.titleConductometric Studies of the Thermodynamics for Complexation of 1,1-Diethyl-3-(4-methoxybenzoyl)thiourea and Cobalt(II) Cation in Aqueous Binary Mixtures of Polar Organic Solvents
dc.typeArticleen_US
dspace.entity.typePublication

Files

Collections

Web of Science_WoS