X-ray and NMR study of the fate of the Co(1, 10-phenanthroline-5,6-diketone)3 (3+) ion in aqueous solution: supramolecular motifs in the packing of 1,10-phenanthroline-5,6-diketone and 1,10-phenanthroline-5,6-diol complexes

Krister Larsson; Lars Öhrström

X-ray and NMR study of the fate of the Co(1, 10-phenanthroline-5,6-diketone)3 (3+) ion in aqueous solution: supramolecular motifs in the packing of 1,10-phenanthroline-5,6-diketone and 1,10-phenanthroline-5,6-diol complexes
Journal article, 2004

X-ray structures are presented of three new cobalt complexes prepared from Co(III) and N,N'-1,10-phenanthroline-5,6-dione. The cis-aqua-chloro-bis(N,N'-1,10-phenanthroline-5,6-dione)cobalt(II) nitrate trihydrate (3) and the cis-aqua-bromobis(N,N'-1,10-phenanthroline-5,6-dione)cobalt(II) trifluoro-methanesulfonate tetrahydrate (4), crystalize in the same space group with a similar arrangement of the complex ions. However, on the molecular scale there are important differences. The cobalt complex in 3 has a typical high-spin geometry whereas in 4 the cobalt complex displays a Jahn-Teller distortion characteristic for low-spin compounds. The third structure is di(N,N'-1,10-phenanthroline-5,6-diol)(N,N'-1,10-phenanthroline-5,6-dione )cobalt(III) bromide hexahydrate (5). NMR studies of the hydration of the Co(III)(1,10-phenanthroline-5,6-dione)(3)(3+) ion in water and DMSO are also presented. The various possible transformations of the N,N'-1,10-phenanthroline-5,6-dione ligand are discussed. (C) 2003 Elsevier B.V. All rights reserved.

derivatives

ruthenium

chemistry

hydrogen bond

oxidation

coordination-compounds

cobalt(ii)

ligands

transition-metal complexes

NMR

X-ray diffraction

coordination compounds

hydration

10-phenanthroline-5

6-dione

states

Author

Krister Larsson

Chalmers, Department of Materials and Surface Chemistry, Inorganic Chemistry

Other publications Research

Lars Öhrström

Chalmers, Department of Materials and Surface Chemistry, Inorganic Chemistry

Other publications Research

Inorganica Chimica Acta

Vol. 357 3 657-664

Subject Categories (SSIF 2011)

Chemical Sciences

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Created

10/7/2017

X-ray and NMR study of the fate of the Co(1, 10-phenanthroline-5,6-diketone)3 (3+) ion in aqueous solution: supramolecular motifs in the packing of 1,10-phenanthroline-5,6-diketone and 1,10-phenanthroline-5,6-diol complexes Journal article, 2004