The complexation reactions between octaazamacrocyclic ligand N,N',N '',N'"-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) and Co2+, Ni2+, Zn2+ and Cu2+ metal cations have been studied conductometrically in acetonitrile and aqueous solutions. The conductance data exhibit different stoichiometry of the complexes in two studied solutions. In most cases 1:1 (ML) complexes were formed while in some cases 2:1 (M2L) complexes are evident. The stability constants of the resulting 1:1 complexes were determined by computer fitting of the conductance/mole ratio data. Theoretical DFT calculations were used to explain metal binding capability of tpmc ligand and the binding sequences were found to follow the order: Cu2+ >> Ni2+ > Co2+ > Zn2+. The combination of results obtained by this theoretical approach and conductometric study successfully explains sensitivity and selectivity of recently developed tpmc based ISE and could play a guiding role in planning experiments with large... macrocyclic ligands.
TY - JOUR
AU - Petković, Branka B.
AU - Milčić, Miloš
AU - Stanković, Dalibor
AU - Stambolic, I.
AU - Manojlović, Dragan
AU - Jovanović, Vladislava M.
AU - Sovilj, Sofija P.
PY - 2013
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1288
AB - The complexation reactions between octaazamacrocyclic ligand N,N',N '',N'"-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) and Co2+, Ni2+, Zn2+ and Cu2+ metal cations have been studied conductometrically in acetonitrile and aqueous solutions. The conductance data exhibit different stoichiometry of the complexes in two studied solutions. In most cases 1:1 (ML) complexes were formed while in some cases 2:1 (M2L) complexes are evident. The stability constants of the resulting 1:1 complexes were determined by computer fitting of the conductance/mole ratio data. Theoretical DFT calculations were used to explain metal binding capability of tpmc ligand and the binding sequences were found to follow the order: Cu2+ >> Ni2+ > Co2+ > Zn2+. The combination of results obtained by this theoretical approach and conductometric study successfully explains sensitivity and selectivity of recently developed tpmc based ISE and could play a guiding role in planning experiments with large macrocyclic ligands.
PB - Oxford : Pergamon-Elsevier Science Ltd
T2 - Electrochimica Acta
T1 - Complexation ability of octaazamacrocyclic ligand toward Co2+, Ni2+, Cu2+ and Zn2+ metal cations: Experimental and theoretical study
VL - 89
SP - 680
EP - 687
DO - 10.1016/j.electacta.2012.11.100
ER -
@article{
author = "Petković, Branka B. and Milčić, Miloš and Stanković, Dalibor and Stambolic, I. and Manojlović, Dragan and Jovanović, Vladislava M. and Sovilj, Sofija P.",
year = "2013",
abstract = "The complexation reactions between octaazamacrocyclic ligand N,N',N '',N'"-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) and Co2+, Ni2+, Zn2+ and Cu2+ metal cations have been studied conductometrically in acetonitrile and aqueous solutions. The conductance data exhibit different stoichiometry of the complexes in two studied solutions. In most cases 1:1 (ML) complexes were formed while in some cases 2:1 (M2L) complexes are evident. The stability constants of the resulting 1:1 complexes were determined by computer fitting of the conductance/mole ratio data. Theoretical DFT calculations were used to explain metal binding capability of tpmc ligand and the binding sequences were found to follow the order: Cu2+ >> Ni2+ > Co2+ > Zn2+. The combination of results obtained by this theoretical approach and conductometric study successfully explains sensitivity and selectivity of recently developed tpmc based ISE and could play a guiding role in planning experiments with large macrocyclic ligands.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "Complexation ability of octaazamacrocyclic ligand toward Co2+, Ni2+, Cu2+ and Zn2+ metal cations: Experimental and theoretical study",
volume = "89",
pages = "680-687",
doi = "10.1016/j.electacta.2012.11.100"
}
Petković, B. B., Milčić, M., Stanković, D., Stambolic, I., Manojlović, D., Jovanović, V. M.,& Sovilj, S. P.. (2013). Complexation ability of octaazamacrocyclic ligand toward Co2+, Ni2+, Cu2+ and Zn2+ metal cations: Experimental and theoretical study. in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 89, 680-687.
https://doi.org/10.1016/j.electacta.2012.11.100
Petković BB, Milčić M, Stanković D, Stambolic I, Manojlović D, Jovanović VM, Sovilj SP. Complexation ability of octaazamacrocyclic ligand toward Co2+, Ni2+, Cu2+ and Zn2+ metal cations: Experimental and theoretical study. in Electrochimica Acta. 2013;89:680-687.
doi:10.1016/j.electacta.2012.11.100 .
Petković, Branka B., Milčić, Miloš, Stanković, Dalibor, Stambolic, I., Manojlović, Dragan, Jovanović, Vladislava M., Sovilj, Sofija P., "Complexation ability of octaazamacrocyclic ligand toward Co2+, Ni2+, Cu2+ and Zn2+ metal cations: Experimental and theoretical study" in Electrochimica Acta, 89 (2013):680-687,
https://doi.org/10.1016/j.electacta.2012.11.100 . .
