Rare and unexpected coordination to copper(II) by a tertiary amide in a macrocyclic ligand.
Incorporation of a tertiary amide donor within the framework of a C(2)-symmetric analogue of 1,4,7-triazacyclononane derived from L-valine results in the isolation of a very rare example of a classical Werner copper(II) complex in which tertiary amide coordination occurs; despite the monomeric nature of the complex in the solid state, frozen solution EPR studies reveal the presence of a triplet ground state consistent with a dimeric species.
Department of Chemistry, Queen Mary University of London, London E1 4NS, UK.
Kevin F
KF
Sibbons
Mohammed
M
Al-Hashimi
Majid
M
Motevalli
Joanna
J
Wolowska
Michael
M
Watkinson
D000577:Amides / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004578:Electron Spin Resonance Spectroscopy; D047028:Macrocyclic Compounds / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry; D014633:Valine / Q000737:chemistry
D000577:Amides; D047028:Macrocyclic Compounds; D009942:Organometallic Compounds; D003300:Copper; D014633:Valine