Studies on the metal-amide bond. XIV. The coordination chemistry of N-methyl-N,N′-bis(2′-pyridinecarboxamide)-1,2-ethane; a potentially tetradentate ligand containing both secondary and tertiary amide groups

Moh'd Mulqi*, Frederick S. Stephens, Robert S. Vagg

*Corresponding author for this work

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The isolation and characterization of a number of transition metal complexes of the ligand N-methyl-N,N′-bis(2′-pyridinecarboxamide)-1,2-ethane, bpen-MeH, is described. Representive non-deprotonated 1:1 complexes of bivalent cobalt, nickel copper and zinc show the ligand to act as a bis-bidentate, forming five- or six-coordinate polymeric complexes involving coordination through pyridyl nitrogen and amide oxygen atoms. The complexes Cu2(bpenMeH)Cl4 and Ni2(bpenMeH)3(ClO4)4·7.5H2O also demostrate this mode of bonding by the ligand. One complex alone of bivalent palladium. was obtained in which coordination of the deprotonated secondary-amide nitrogen atom occurs. Coordination of the tertiary-amide nitrogen atom is not observed for any of the complexes.

Original languageEnglish
Pages (from-to)215-220
Number of pages6
JournalInorganica Chimica Acta
Publication statusPublished - 1982


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