Structure and Magnetic Properties of Mn(II) Complexes with Enaminoketone Derivatives of 3-Imidazoline Nitroxide View Full Text


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Article Info

DATE

2001-03

AUTHORS

E. Yu. Fursova, V. I. Ovcharenko, G. V. Romanenko, V. N. Ikorskii, Yu. G. Shvedenkov, I. P. Asanov, L. N. Mazalov

ABSTRACT

The crystal structures of two manganese complexes with the enaminoketone derivatives of 3-imidazoline nitroxide: MnL2COOMe (layered polymeric) and MnL2CF3(DMF)2 (molecular) have been determined. The polymer structure of MnL2COOMe is the result of direct coordination of the nitroxyl O atoms of the neighboring bischelate fragments by the Mn atoms. This forms heterospin exchange clusters >N⋅-O–Mn(II)–O-N< with strong antiferromagnetic interactions between the odd electrons of the paramagnetic centers. The structure of MnL2CF3(DMF)2 is characterized by ligand cis-coordination in the octahedral coordination polyhedron. Due to the molecular nature of the complex, the solid compound has only weak ferromagnetic intramolecular indirect exchange interactions. The charge states of atoms in coordination units was confirmed by X-ray photoelectron data. More... »

PAGES

251-260

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1010559117135

DOI

http://dx.doi.org/10.1023/a:1010559117135

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1027157369


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