Transition Metal Complexes of 5-(Pyridin-2-yl)tetrazole and Methyl-Substituted 5-(Pyridin-2-yl)tetrazoles

Abstract

Transition metal complexes of the formulae M(ptt)₂,2H₂O (M = Mn, Fe, Co, Cu, Zn), M(ptt)₂,^- 2NH₃,H₂O (M = Co, Ni), FeCl(ptt),2H₂O, Ag(ptt), Mn(tmptt)₂,2H₂O M(tmptt)₂,NH₃,2H₂O (M = Cu, Zn)M(tmptt)₂NH₃2H₂O (M=Co, Ni), Ni(tmptt)₂,2NH₃,H₂O, Ag(tmptt), M(smptt)₂ (M = Co, Ni), Cu(smptt)₂,3H₂O, Cu(smptt)₂,NH₃,2H₂O, Cu(smptt)₂,2NH₃, Zn(smptt)₂,NH₃,H₂O and Ag(smptt) where ptt, tmptt and smptt are the anions of 5-(pyridin-2-yl)tetrazole, 5-(3-methylpyridin- 2-yl)tetrazole and 5-(6-methylpyridin-2 yl)tetrazole, respectively, have been prepared.Studies of the infrared and ultraviolet-visible spectra, magnetic moments and X-ray diffraction patterns show structural relationships between compounds and indicate that, in addition to the organic ligands, water and ammonia molecules are bonded to the metal ions. Thermal decomposition of the compounds proceeds through the formation of pyridinecarbonitriles.