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- Title
Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes.
- Authors
Constable, Edwin C.; Housecroft, Catherine E.; Šmídková, Markéta; Zampese, Jennifer A.
- Abstract
The heteroleptic complexes [Ru( 1)( 4)][PF6]2, [Ru( 2)( 4)][PF6]2, [Ru(Phtpy)( 4)][PF6]2, and [Ru(pytpy)( 4)][PF6]2 (Phtpy = 4′-phenyl-2,2′:6′,2″-terpyridine, pytpy = 4′-(4-pyridyl)-2,2′:6′,2″-terpyridine, 1 and 2 = 4-methyl ester substituted derivatives of Phtpy and pytpy, 4 = ethyl 2,2′:6′,2″-terpyridine-4′-phosphonate) have been prepared. The single crystal structure of ligand 1 ( 1 = methyl 4-carboxy-4′-phenyl-2,2′:6′,2″-terpyridine) is reported. The introduction of the 4-methyl ester group causes a small red shift in the MLCT band of the ruthenium(II) complexes and a small shift to a more positive potential for the Ru2+/Ru3+ couple. The new complexes should serve as a useful starting point for development of ruthenium(II) dyes suited for sensitization of p-type semiconductors.
- Subjects
HETEROLEPTIC compounds; CRYSTAL structure; LIGANDS (Chemistry); SEMICONDUCTORS; RUTHENIUM
- Publication
Canadian Journal of Chemistry, 2014, Vol 92, Issue 8, p724
- ISSN
0008-4042
- Publication type
Article
- DOI
10.1139/cjc-2014-0065