Complexes of tri-2-pyridylamine. Part III. Complexes with the thiocyanates and nitrates of cobalt(II), nickel(II), and copper(II): the three linkage isomers of (tri-2-pyridylamine)Cu(CNS)2

Abstract

Seventeen compounds of cobalt(II), nickel(II), and copper(II) nitrates and thiocyanates with tri-2-pyridylamine (tripyam) and phenyldi-2-pyridylamine (dppa) are reported. The compounds are: [M(tripyam)₂(NO₃)₂](M = Co or Cu), [M(tripyam)₂](NO₃)₂(M = Co or Ni), [Co(tripyam)₂][Co(X)₄](X = NO₃^– or NCS^–), [Ni(tripyam)(H₂O)₂NO₃](NO₃), [Cu(tripyam)(NO₃)₂], [M(tripyam)₂(NCS)₂](M = Coor Ni), [Ni(tripyam)(NCS)₂], and CuL(CNS)₂(L = tripyam or dppa). The spectra of the compounds are discussed in terms of their probable structures and in addition evidence is presented to show that the three possible linkage isomers of CuL(CNS) have been prepared.