The semiquinone radical anion of 1,10-phenanthroline-5,6-dione: synthesis and rare earth coordination chemistry

Reduction of 1,10-phenanthroline-5,6-dione (pd) with CoCp R 2 resulted in the first molecular compounds of the pd&z.rad; − semi-quinone radical anion, [CoCp R 2 ] + [pd]&z.rad; − (R = H, ( 1 ); R = Me 4 , ( 2 )). Furthermore compounds 1 and 2 were reacted with [Y(hfac) 3 (thf) 2 ] (hfac = 1,...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018-10, Vol.54 (8), p.11284-11287
Main Authors: Hickson, James R, Horsewill, Samuel J, McGuire, Jake, Wilson, Claire, Sproules, Stephen, Farnaby, Joy H
Format: Article
Language:English
Subjects:
Anions
Chemical synthesis
Coordination compounds
Crystallography
Diketones
Organic chemistry
Rare earth compounds
Yttrium
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Summary:Reduction of 1,10-phenanthroline-5,6-dione (pd) with CoCp R 2 resulted in the first molecular compounds of the pd&z.rad; − semi-quinone radical anion, [CoCp R 2 ] + [pd]&z.rad; − (R = H, ( 1 ); R = Me 4 , ( 2 )). Furthermore compounds 1 and 2 were reacted with [Y(hfac) 3 (thf) 2 ] (hfac = 1,1,1-5,5,5-hexafluoroacetylacetonate) to synthesise the rare earth-transition metal heterometallic compounds, [CoCp R 2 ] + [Y(hfac) 3 ( N , N ′-pd)]&z.rad; − (R = H, ( 3 ); R = Me 4 , ( 4 )). The redox-active ligand as a route to heterobimetallic rare earth-transition metal compounds containing a semiquinone radical anion.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc05591b