Synthesis of Cu(II) and Mn(III) Complexes Involving Derivatives of Pyridine

Abstract

Two complexes with derivatives of pyridine as ligands were synthesized and characterized. From the reaction of 2-pyridinecarboxaldehyde oxime with Cu(OAc)2 · H2O afforded the complex C20H30N6O12Cu3 (I), and the use of 3-hydroxy-2-pyridinecarboxylic acid with anhydrous MnCl2 · 4H2O led to the formation of another complex C12H14N2OCl2Mn (II). They were characterized by X-ray diffraction (CIF files CCDC nos. 568718 (I) and 1568880 (II)), NMR, IR and elemental analysis. For I: terigonal, space group R $$\bar 3$$ /H, a = 42.548(3), c = 10.2774(9) A, V = 16113(2) A3, Z = 18, ρcalcd = 1.367 Mg/m3, the final R factor was R1 = 0.0945, 6662 for reflections were observed with I > 2σ(I), wR = 0.162 for all data. For II: triclinic, Pī, a = 5.6174(9), b = 7.7259(13), c = 9.7160(16) A, α = 70.444(3)°, β = 88.009(3)°, γ = 89.818(3)°, V = 397.09(11) A3, Z = 1, ρcalcd = 1.840 Mg/m3, the final R factor was R1 = 0.0281, 4280 for reflections were observed with I > 2σ(I), wR = 0.0775 for all data.