Abstract
A series of macrocyclic Schiff bases derived from 1,3,5-triketones and α,ω-alkanediamines has been prepared and their mononuclear complexes with CuII NiII and CoII are described. The symmetrical macrocycles are derived from the reaction of heptane-2,4,6-, nonane-3,5,7-, undecane-4,6,8-, or 2,8-dimethylnonane-3,5,7-trione (2 mol) with ethane-1,2-, propane-1,2-, propane-1,3-, or butane-1,4-diamine (2 mol), in ethanol, and are potentially tetra-anionic ligands. Treatment of the pre-formed macrocycle with metal acetate, or a template reaction involving the triketone, diamine, and metal salt, gives the corresponding mononuclear transition-metal derivative. The complexes are characterised by their i.r., diffuse-reflectance, and mass spectra and room-temperature magnetic moments. Positional isomers of the copper(II) complex of the macrocycle derived from heptane-2,4,6-trione (2 mol), ethane-1,2-diamine (1 mol), and propane-1,2-dlamine (1 mol) are reported. Complexes of other unsymmetrical macrocycllc Schiff bases prepared by similar routes are described. The symmetrical macrocycle derived from heptane-2,4,6-trione and benzene-1,2-diamine is also reported.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Dalton Transactions
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
