CONDUCTOMETRIC STUDIES OF THE THERMODYNAMICS OF COMPLEXATION OF ZN2+, NI2+, CO2+, PB2+, MN2+, CU2+ IONS WITH 1,13-BIS (8-QUINOLYL) -1,4,7,10,13-PENTAOXATRIDECANE IN BINARY SOLVENT MIXTURES

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PAYEHGHADR MAHMOOD; TAGHDIRI MEHDI; ZAMANI AKRAM; HESARAKI NEDA

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Journal Paper

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Journal: Iranian Journal of Chemistry and Chemical Engineering Year:2012 | Volume:31 | Issue:3 (63) Page(s): 1-7

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Title

CONDUCTOMETRIC STUDIES OF THE THERMODYNAMICS OF COMPLEXATION OF ZN2+, NI2+, CO2+, PB2+, MN2+, CU2+ IONS WITH 1,13-BIS (8-QUINOLYL) -1,4,7,10,13-PENTAOXATRIDECANE IN BINARY SOLVENT MIXTURES

Author(s)

PAYEHGHADR MAHMOOD | TAGHDIRI MEHDI | ZAMANI AKRAM | HESARAKI NEDA | Issue Writer Certificate

Keywords

CONDUCTOMETRY

STABILITY CONSTANT

13–BIS(8-QUINOLYL)-1

13- PENTAOXATRIDECANE

KRYPTOFIX5

COMPLEXATION

Abstract

The COMPLEXATION reaction between 1,13-bis (8-quinolyl)-1,4,7,10,13-pentaoxatridecane (Kryptofix5) ligand with Zn2+, Ni2+, Co2+, Pb2+, Mn2+ and Cu2+ ions were studied conductometrically in different AcetoNitrile-NitroMethane (AN-NM) and AcetoNitrile-Methanol (AN-MeOH) mixtures. The formation constants of the resulting 1:1 complexes were calculated from the computer fitting of the molar conductance in various mole ratios. The enthalpy and entropy changes of the COMPLEXATION reactions were derived from conductometric titrations in different AN-NM mixtures at various temperatures. The results revealed that KRYPTOFIX5 forms very stable 1:1 complexes with mentioned cations in all AN-NM and AN-MeOH mixtures. It was found that the stability of the resulting complexes decreased with increasing nitromethane or methanol in the solvent mixture. The TDSo vs. DHo plot of all thermodynamic data obtained shows a fairly good linear correlation indicating the existence of enthalpy-entropy compensation in the COMPLEXATION reactions.

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APA: Copy

PAYEHGHADR, MAHMOOD, TAGHDIRI, MEHDI, ZAMANI, AKRAM, & HESARAKI, NEDA. (2012). CONDUCTOMETRIC STUDIES OF THE THERMODYNAMICS OF COMPLEXATION OF ZN²⁺, NI²⁺, CO²⁺, PB²⁺, MN²⁺, CU²⁺ IONS WITH 1,13-BIS (8-QUINOLYL) -1,4,7,10,13-PENTAOXATRIDECANE IN BINARY SOLVENT MIXTURES. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), 31(3 (63)), 1-7. SID. https://sid.ir/paper/575253/en

Vancouver: Copy

PAYEHGHADR MAHMOOD, TAGHDIRI MEHDI, ZAMANI AKRAM, HESARAKI NEDA. CONDUCTOMETRIC STUDIES OF THE THERMODYNAMICS OF COMPLEXATION OF ZN²⁺, NI²⁺, CO²⁺, PB²⁺, MN²⁺, CU²⁺ IONS WITH 1,13-BIS (8-QUINOLYL) -1,4,7,10,13-PENTAOXATRIDECANE IN BINARY SOLVENT MIXTURES. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)[Internet]. 2012;31(3 (63)):1-7. Available from: https://sid.ir/paper/575253/en

IEEE: Copy

MAHMOOD PAYEHGHADR, MEHDI TAGHDIRI, AKRAM ZAMANI, and NEDA HESARAKI, “CONDUCTOMETRIC STUDIES OF THE THERMODYNAMICS OF COMPLEXATION OF ZN²⁺, NI²⁺, CO²⁺, PB²⁺, MN²⁺, CU²⁺ IONS WITH 1,13-BIS (8-QUINOLYL) -1,4,7,10,13-PENTAOXATRIDECANE IN BINARY SOLVENT MIXTURES,” IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), vol. 31, no. 3 (63), pp. 1–7, 2012, [Online]. Available: https://sid.ir/paper/575253/en

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