Abstract
Three chromium(III) complexes of general formula [Cr(ox)2(pdaH)]2− (where ox = C2O4 2− and pdaH− is N,O-bonded 2,3-, 2,4- or 2,5-pyridinedicarboxylic acid anion) were obtained and characterized in solution. Acid-catalysed aquation of [Cr(ox)2(pdaH)]2− gave two products: [Cr(ox)(pdaH)(H2O)2]0 (P1) and cis-[Cr(ox)2(H2O)2]2− (P2). The kinetics of these reactions were studied spectrophotometrically, within the 0.1–1.0 M HClO4 range, and the pseudo-first-order rate constants for the oxalato (k obs1) and pdaH− (k obs2) ligands dissociation were calculated based on the determined pseudo-first-order rate constants (k obs) and P1:P2 molar ratio. The dependencies of the pseudo-first-order rate constants on [H+] are as follows: k obs1 = b 1[H+] and k obs2 = b 2[H+], where b 1 and b 2 are the second-order rate constants for the oxalato and pdaH− ligands dissociation, respectively. Kinetic parameters were determined and the mechanism of the pdaH− ligand dissociation is proposed.
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Grigss DL, Heden P, Smith KET, Rademacher W (1991) Photochemistry 30:2513. doi:10.1016/0031-9422(91)85091-D
Stone TW (1993) Pharmacol Rev 45:309
Verun O et al (1999) J Physiol 519:451. doi:10.1111/j.1469-7793.1999.0451m.x
Smythe GA, Braga O, Brew BJ, Grant RS, Guillemin GJ, Kerr SJ, Walker DW (2002) Anal Biochem 301:21. doi:10.1006/abio.2001.5490
Shaver A, Hall DA, Ng JB, Lebuis A-M, Hynes RC, Posner BI (1995) Inorg Chim Acta 229:253. doi:10.1016/0020-1693(94)04252-Q
Das A, Pilet G, Luneau D, El Fallah MS, Ribas J, Mitra S (2005) Inorg Chim Acta 358:4581. doi:10.1016/j.ica.2005.07.036
Min D, Yoon SS, Jung D-Y, Lee CY, Kim Y, Han WS, Lee SW (2001) Inorg Chim Acta 324:293. doi:10.1016/S0020-1693(01)00621-1
Zhang X-M (2005) Inorg Chim Acta 358:1865. doi:10.1016/j.ica.2004.12.038
Patrick BO, Stevens CL, Storr A, Thompson RC (2005) Polyhedron 24:2242. doi:10.1016/j.poly.2005.03.085
Mendoza-Diaz G, Rigotti G, Piro OE, Sileo EE (2005) Polyhedron 24:777. doi:10.1016/j.poly.2005.02.007
Vincent JB (2000) Acc Chem Res 33:503. doi:10.1021/ar990073r
Levina A, Codd R, Dillon CT, Lay PA (2003) In: Karlin KD (ed) Progress in inorganic chemistry, vol 51. Wiley, New York
Berner TO, Murphy MM, Slesinski RS (2004) Food Chem Toxicol 42:1029. doi:10.1016/j.fct.2004.02.015
Kita E, Gołembiewska K (2007) Transit Met Chem 32:56. doi:10.1007/s11243-006-0128-8
Kita E, Marai H, Zając K (2008) Transit Met Chem 33:211. doi:10.1007/s11243-007-9025-z
Kita E, Marai H, Jasiński M, Drewa T (2008) Transit Met Chem 33:585. doi:10.1007/s11243-008-9084-9
Kita E, Marai H, Iglewski Ł (2009) Transit Met Chem 34:75. doi:10.1007/s11243-008-9160-1
Borowiak-Resterna A, Szymanowski J, Voelkel A (1996) J Radioanal Nucl Chem Art 208:75. doi:10.1007/BF02039750
Kita E, Szabłowicz M (2003) Transit Met Chem 28:698. doi:10.1023/A:1025469431212
Das S, Banerjee RN, Banerjea D (1984) J Coord Chem 13:123. doi:10.1080/00958978408079764
Kallen TW (1975) Inorg Chem 14:2687. doi:10.1021/ic50153a018
Kallen TW, Hamm RE (1977) Inorg Chem 16:1147. doi:10.1021/ic50171a034
Acknowledgements
(i) The authors wish to thank authorities of N. Copernicus University for the financial support of these studies with the Grant No. 368-Ch; (ii) Hasan Marai wishes to thank Libyan Government for financial support of his Ph.D. studies in Poland.
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Kita, E., Marai, H., Jach, K. et al. Mixed chromium(III) complexes with pyridinedicarboxylato and oxalato ligands: kinetic studies in HClO4 solutions. Transition Met Chem 34, 217–224 (2009). https://doi.org/10.1007/s11243-008-9181-9
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DOI: https://doi.org/10.1007/s11243-008-9181-9