Copper(II)-assisted thorough hydrolysis of 2,4,6-tris(2-pyridyl)1,3,5-triazine (tptz). Crystal structures of bis(2-pyridylcarboxylato)-copper(II) dihydrate and bis(2-pyridylcarbonyl)-amido-2,4,6-tris(2-pyridyl)-1,3,5-triazine-copper(II) dicyanamide heptahydrate
- 93 Downloads
2,4,6-Tris(2-pyridyl)-1,3,5-triazine (tptz) undergoes hydrolysis in the presence of copper(II) acetate affording bis(2-pyridylcarbonyl)amido-copper(II) and free 2-pyridylcarboxylic anion. Two compounds of formulas [Cu(NC5H4COO)2]·2H2O (1) and [Cu(NC5H4CO)2N(tptz)](N(CN)2)·7H2O (2), where NC5H4COO− and (NC5H4CO)2N− are 2-pyridylcarboxylate and bis(2-pyridylcarbonyl)amido-anion, respectively, were obtained from methanol/ethanol solution of tptz with copper acetate; they were characterized by element analysis and single crystal X-ray diffraction method. Single crystal XRD analysis shows that in complex 1 coordination number around Cu atom is 4 with distorted square-planar coordination geometry and in complex 2 coordination number around Cu atom is 6 with distorted octahedral geometry. Crystal data for 1: a = 5.1359(10) Å, b = 7.6471(15) Å, c = 9.2303(18) Å, α = 74.90(3)°, β = 84.36(3)°, γ = 71.37(3)°, space group P1, crystal system triclinic, Z = 1, V = 331.6(1) Å3, d calc = 1.721 g/cm3. Crystallographic data for 2: space group C2/c, crystal system monoclinic, a = 23.976(5) Å, b = 15.465(3) Å, c = 18.649(4) Å, β = 92.66(3)°, V = 6907(2) Å3, d calc = 1.0448 g/cm3, Z = 4.
Keywords2,4,6-tris(2-pyridyl)-1,3,5-triazine copper complexes crystal and molecular structure
Unable to display preview. Download preview PDF.
- 1.E. M. Smolin and L. Rapoport, Triazines and Derivatives, Interscience, New York (1959).Google Scholar
- 5.A. Majumder, C. R. Choudhury, S. Mitra, et al., Z. Naturforsch., B60, No. 1, 99–105 (2005).Google Scholar
- 12.A. Cantarero, J. M. Amigo, J. Faus, et al., J. Chem. Soc., Dalton Trans., No. 8, 2033–2039 (1988).Google Scholar
- 13.J. Faus, M. Julve, J. M. Amigo, and T. Debaerdemaeker, ibid., No. 9, 1681–1687 (1989).Google Scholar
- 17.G. M. Sheldrick, SHELXTL NT Version 5.1._Programm for Solution and Refinement of Crystal Structures; Univ. Göttingen, Germany (1997).Google Scholar