Synthesis, characterization and thermal properties of cobalt(ıı), nickel(ıı) and copper(ıı) complexes of 2,6-bis(3,4,5-trimethyl-n-pyrazolyl)pyridine): The crystal structure of [co(btmpp)(h2o)(2)(no3)]no3

Abstract

Co(II), Ni(II) and Cu(II) nitrate complexes with btmpp, namely ([Co(btmpp)(H2O)(2)(NO3)]NO3 (1), [Ni(btmpp)(H2O)(NO3)]NO3 (2) and [Cu(btmpp)(MeOH)(NO3)]NO3 (3), where btmpp = 2,6-bis(3,4,5-trimethyl-N-pyrazolyl)pyridine), have been synthesized and characterized by physicochemical and spectroscopic methods. The crystal structure of complex 1 has been determined by single crystal diffraction at 100K. In all the complexes, btmpp is coordinated in a tridentate mode through its nitrogen atoms. One of the nitrates in complex 1 is terminally bonded to the metal center through the oxygen atom, whereas the other one is out of the coordination sphere. The Co(II) atom in complex 1 is hexa-coordinated with a CoN3O3 distorted octahedral environment. Decomposition of three complexes was analyzed thermogravimetrically. All three complexes decompose similar to explosive material.