Metal chelates of the amide-substituted nitroxides: the influence of hydrogen bonding on the structure of metal-nitroxide complexes

The amide function was introduced into metal chelates derived from 3-imidazoline-1-oxyl enaminoketones (MCo, Ni) with the aim of investigation of the influence of hydrogen bonding upon the structure and properties of metal-nitroxide complexes. The complexes obtained manifest strong tendency to incl...

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Bibliographic Details
Published in:Crystal engineering 2000, Vol.3 (1), p.41-61
Main Authors: Burdukov, Alexei B, I. Ovcharenko, Victor, Reznikov, Vladimir A, Ikorskii, Vladimir N, G. Shvedenkov, Yuri, Pervukhina, Natalie V
Format: Article
Language:English
Subjects:
Complexes
Hydrogen bonds
Radicals
Transition metals
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Summary:The amide function was introduced into metal chelates derived from 3-imidazoline-1-oxyl enaminoketones (MCo, Ni) with the aim of investigation of the influence of hydrogen bonding upon the structure and properties of metal-nitroxide complexes. The complexes obtained manifest strong tendency to include different solvents due to clathration, hydrogen bonding, or hydrogen bonding combined with coordinative bonding. The hydrogen bond patterns vary from linear chains arising from amide–amide interactions to complex 3D motifs formed with participation of the solvent molecules (water, methanol). The hydrogen bonds can act as magnetically innocent intermolecular junctions as well as exchange pathways between the paramagnetic centers. The magnetic properties of the complexes are presented and discussed in connection with their structure.
ISSN:1463-0184
DOI:10.1016/S1463-0184(00)00028-9