Synthesis, X-Ray Characterisation and Spectroscopic Studies of Metal Complexes of N,N'-1,2-Xylene-α,α'-diylbis(pyridin-2-one)

DOI: 10.1039/DT9940000859

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 859 - 870 (1994)

Update date:2022-09-26

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Authors:

Goodgame, David M. L.

Hill, Stuart P. W.

Smith, Amanda M.

Williams, David J.

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Article abstract of DOI:10.1039/DT9940000859

The co-ordination modes adopted by N,N'-1,2-xylene-α,α'-diylbis(pyridin-2-one) (o-xbp) with Sc, Y, lanthanides, Th(IV), Mn(II), Fe(III), Co(II) and Zn(II) have been studied.Five representative complexes have been structurally characterised by single-crystal X-ray diffraction.In the monomeric ten-co-ordinate complex *MeOH both o-xbp ligands form eleven-membered chelate rings.In the dinuclear complex *3MeCN pairs of nine-co-ordinate Y atoms are linked by an o-xbp bridge, whilst the other o-xbp ligands form chelate rings.The dinuclear complex <2> forms individual 22-membered rings in which pairs of tetrahedrally co-ordinated Zn atoms are linked by o-xbp bridges.In the iron(III) complex *MeOH the Fe atom in the cation has cis-octahedral co-ordination geometry with the o-xbp ligands forming eleven-membered chelate rings; the anion is tetrahedral.In the cobalt(II) complex I2*2MeOH the o-xbp ligands also chelate but the Co atom has a trans-octahedral geometry in which the two axial ligands are methanol molecules.A distinctive pattern of ligand conformations is observed in this series of compounds.Relevant spectroscopic results are also given.

Full text of DOI:10.1039/DT9940000859

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