Equilibrium studies of ternary systems containing some selected transition metal ions, triazoles and aromatic carboxylic acids

Mohamed Magdy Khalil; Abd-Elatty Radalla; Fatma Qasem; Rehab Khaled

Korean Journal of Chemical Engineering, Vol.31, No.1, 109-119, January, 2014

DOI10.1007/s11814-013-0181-x Export Citation

Equilibrium studies of ternary systems containing some selected transition metal ions, triazoles and aromatic carboxylic acids

Mohamed Magdy Khalil, Abd-Elatty Radalla, Fatma Qasem, and Rehab Khaled^†

Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt

E-mail:

Solution equilibria of the binary and ternary complex systems of the divalent transition metal ions Cu2+, Ni2+, Zn2+, and Co2+ with 1,2,4-triazole (TRZ), 3-mercapto-1,2,4-triazole (TRZSH), and 3-amino-1,2,4-triazole (TRZAM) and aromatic carboxylic acids (phthalic, anthranilic, salicylic, and 5-sulfosalicylic acid) have been studied pH-metrically at (25.0±0.1) ℃, and a constant ionic strength I=1×10^(-1) mol L^(-1) NaNO3 in an aqueous medium. The potentiometric titration curves show that binary and ternary complexes of these ligands are formed in solution. The stability constants of the different binary and ternary complexes formed were calculated on the basis of computer analysis of the titration data. The relative stability of the different ternary complex species is expressed in terms of Δ log K values, log X and R. S.% parameters. The effect of temperature of the medium on both the proton-ligand equilibria for TRZAM and phthalic acid and their metal-ligand equilibria with Cu2+, Ni2+, and Co2+ has been studied along with the corresponding thermodynamic parameters. The complexation behavior of ternary complexes is ascertained using conductivity measurements. In addition, the formation of ternary complexes in solution has been confirmed by using UV-visible spectrophotometry.

Keywords:Triazoles;Equilibrium Studies;Stability Constants;Binary and Ternary Complexes;Aromatic Carboxylic Acids

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[1] Kidwai M, Dave B, Misra P, Saxena RK, Singh M, Inorg. Chem. Commun., 3, 465 (2000)

[2] Kidwai M, Sapra P, Misra P, Saxena RK, Singh M, ganic Medicinal. Chem., 9, 217 (2001)

[3] Garcia-Glez JC, Mendez R, Martin-Villacorta J, J. Chromatogr., 812, 213 (1998)

[4] Kucukguzel I, Guniz Kucukguzel S, Rollas S, Kiraz M, Bioorganic Medicinal. Chem., 11(13), 1703 (2001)

[5] Moreau S, Coudert P, Rubat C, Vallee-Goyet D, Dardette G, Gramain JC, Couquelet J, Bioorganic Medicinal. Chem., 6(7), 983 (1998)

[6] Manfredini S, Vicentini CB, Manfrini M, Bianchi N, Rutigliano C, Mischiati C, Gambari R, Bioorganic Medicinal.Chem. Commun., 8(9), 2343 (2000)

[7] Katritzky AR, Rees CW, Kevin TP, Comprehensive heterocyclic chemistry: the structure, reactions, synthesis, and uses of heterocyclic compounds. Five-membered rings with two or more nitrogen atoms, Pergamon Press, Oxford, U.K., 785 (1984)

[8] Kadaba PK, J. Med. Chem., 31, 196 (1988)

[9] Hoffman HL, Ernst EJ, Klepser ME, Expert Opin. Invest. Drugs., 9, 593 (2000)

[10] Nomiya K, Tsuda K, Kasuga NC, J. Chem. Soc., Dalton Trans., 1653 (1998)

[11] Dwyer FP, Mellor DP, Chelating agents and metal chelates, Academic Press, New York (1964)

[12] Garcia-Raso A, Fiol JJ, Adrover B, Tauler P, Pons A, Mata I, Espinosa E, Molins E, Polyhedron., 22, 3255 (2003)

[13] Ranford JD, Sadler PJ, Dalton Trans., 3393 (1993)

[14] Majella G, Vivienne S, Malachy M, Michael D, Vickie M, Polyhedron., 18, 2931 (1999)

[15] Saha DK, Sandbhor U, Shirisha K, Padhye S, Deobagkar D, Ansond CE, Powell AK, Med. Chem. Lett., 14, 3027 (2004)

[16] Zoroddu MA, Zanetti S, Pogni R, Basosi R, J. Inorg. Biochem., 63, 291 (1996)

[17] Sigel H, Metal ions in biological systems, Marcel Dekker, New York, 3 (1974)

[18] Aljahadi M, El-sherif AA, Shoukry MM, Mohamed SE, J. Solu. Chem., 42(5), 1028 (2013)

[19] Baraldi M, Malavasi W, Grandi R, J. Chem. Crystallogr., 26, 63 (1996)

[20] Wang DB, Chen BH, Xiang Y, Synthesis and Reactivity in Inorg., Met. Org.; Nano-Met. Chemistry., 27, 479 (1997)

[21] Saravanan N, Yusuff KKM, Transition Met. Chem., 21, 464 (1996)

[22] Gabryszewski M, Spectrosc. Lett., 34, 57 (2001)

[23] Goel S, Pandey OP, Sengupta SK, Thermochim. Acta., 133, 359 (1988)

[24] Gabryszewski M, Pol. J. Chem., 68, 1895 (1994)

[25] Barszcz B, Pol. J. Chem., 63, 9 (1989)

[26] Gabryszewski M, Pol. J. Chem., 66, 1067 (1992)

[27] Lenarcik B, Kurdziel K, Gabryszewski M, J. Inorg. Nucl.Chemistry., 42, 587 (1980)

[28] Neelakantan MA, Sundaram M, Sivasankaran NM, J.Spectrochim. Acta Part A., 79, 1693 (2011)

[29] Panda S, Mishra R, Panda AK, Satpathy KC, J. Indian Chem. Soc., 66, 472 (1989)

[30] Reddy MS, Ram K, Reddy MGR, Indian J. Chem., 28A, 437 (1989)

[31] Khalil MM, Fazary AE, Monatschefte fur Chemie., 135, 1455 (2004)

[32] Khalil MM, El-Deeb MM, Mahmoud RK, J. Chem. Eng. Data, 52(5), 1571 (2007)

[33] Khalil MM, Mahmoud RK, J. Chem. Eng. Data, 53(10), 2318 (2008)

[34] Khalil MM, Radalla AM, Mohamed AG, J. Chem. Eng. Data, 54(12), 3261 (2009)

[35] Grans G, Analyst., 77, 661 (1952)

[36] Welcher FJ, The analytical uses of ethylenediaminetetraacetic acid, Von Nostrand: Princeton, NJ (1965)

[37] Grans P, O’Sullivan B, Talanta., 51, 33 (2000)

[38] Irving HM, Rossotti HS, J. Chem. Soc., 3397 (1953)

[39] Irving HM, Rossotti HS, J. Chem. Soc., 2904 (1954)

[40] Gans P, Vacca A, Talanta., 21, 45 (1974)

[41] Smith RM, Martell AE, NIST critically selected stability constants of metal complexes database, Version 3.0; NIST standard reference database 46; U.S. Department of Commerce. National Institute of Standard and Technology (1997)

[42] Weast RC, Handbook of chemistry and physics, CRC Press, Boca Raton, FL (1973)

[43] Boraei AAA, Mohamed NFA, J. Chem. Eng. Data, 47(4), 987 (2002)

[44] Catalan J, Menendez M, Elguero J, Bull. Soc. Chim. Fr., 30 (1985)

[45] Inezedy J, Determination of equilibrium constants in: Analytical applications of complex equilibria, Ellis Horwood, Chichester, UK (1976)

[46] Irving K, Williams RP, Nature (London)., 162, 746 (1948)

[47] Idriss KA, Seleim MM, El-shahawy E, Saleh MB, Sedaria H, Monatsh. Chem., 119, 683 (1988)

[48] Venkatnarayana G, Swamy SJ, Lingaiah P, Indian J. Chem., 27A, 613 (1988)

[49] Mohamed M, Said AI, Ali MA, Iman TA, Transition Met.Chem., 21, 1 (1996)

[50] Martin RB, Prados RJ, J. Inorg. Chem., 36, 1665 (1974)

[51] Sigel H, Chem. Int. Edn., 14, 394 (1975)

[52] Dewitt R, Watters JL, J. Am. Chem. Soc., 76, 3810 (1954)

[53] Kida S, Bull. Chem. Soc. Jpn., 29, 805 (1956)

[54] Sanaie N, Haynes CA, J. Chem. Eng. Data, 50(6), 1848 (2005)

[55] Offiong OE, Transition. Met. Chem., 23, 553 (1998)

[56] Figgs BN, Introduction to ligand fields, Interscience Publishers, New York (1996)