Studies on the metal-amide bond. I. Metal complexes of the bis-amide tetradentate ligand N,N′-bis(2′-pyridinecarboxamide)-1,2-benzene

Ross L. Chapman*, Robert S. Vagg

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    96 Citations (Scopus)

    Abstract

    Complexes of general formula M(bpbH2)Cl2· nH2O, where bpbH2 = N,N′-bis(2′-pyridinecarboxamide)-1,2-benzene and M = Mn (n = 0), Co (n = 1), Co and Ni (n = 2) and Cu (n = 1.5) have been prepared. As well, the complexes Ag(bpbH2)(NO3) and Co(bpbH2)(NCS)2·2.5H2O were isolated. The copper and nickel complexes exhibit clear evidence of neutral amide-N coordination. Several of the metal ions used promote amide deprotonation on coordination, and a series of complexes of formula M(bpb)·H2O (M = Co, Ni, Cu, Zn and Pd) are reported. A planar MIIN4 system is proposed for these complexes. Stereochemistries for the complexes have been proposed utilising microanalyses, magnetic susceptibilities, thermogravimetric analyses and infrared and visible spectral data.

    Original languageEnglish
    Pages (from-to)227-234
    Number of pages8
    JournalInorganica Chimica Acta
    Volume33
    Issue numberC
    DOIs
    Publication statusPublished - 1979

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