Article

Heteroleptic dipyrrin/bipyridine complexes of ruthenium(II).

MacDiarmid Institute for Advanced Materials and Nanotechnology, Institute of Fundamental Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand.
Inorganic Chemistry (impact factor: 4.6). 01/2009; 48(1):13-5. DOI:10.1021/ic8016497 pp.13-5
Source: PubMed

ABSTRACT The synthesis and characterization of a series of heteroleptic dipyrrinato/2,2'-bipyridine complexes of ruthenium(II) are reported. Spectroscopic analysis, including resonance Raman, indicates that the complexes are only weakly emissive and that the dipyrrin and Ru --> bipyridine (metal-to-ligand charge transfer) chromophores are uncoupled.

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    Article: Asymmetric ruthenium(II) and osmium(II) complexes with new bidentate polyquinoline ligands. Synthesis and NMR characterization.
    Antonino Mamo, Alessandro Aureliano, Antonino Recca
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    ABSTRACT: A series of Ru(II) and Os(II) tris-chelate complexes with new bidentate 2-pyridylquinoline ligands have been synthesized and fully characterized by EA,1H-NMR and FAB-MS techniques. The new ligands are: L1 = 4-p-methoxyphenyl-6-bromo-2-(2'- pyridyl)quinoline (mphbr-pq) and L2 = 4-p-hydroxyphenyl-6-bromo-2-(2'-pyridyl)-quinoline (hphbr-pq). The complexes studied are: [Ru(bpy)2L1](PF6)2 (C1), [Ru(bpy)2L2](PF6)2 (C2), [Os(bpy)2L1](PF6)2 (C3), [Os(bpy)2L2](PF6)2 (C4) (bpy = 2,2'-bipyridine), [Ru(dmbpy)2L1](PF6)2 (C5), [Ru(dmbpy)2L2](PF6)2 (C6), [Os(dmbpy)2L1](PF6)2 (C7), and [Os(dmbpy)2L2](PF6)2 (C8) (dmbpy = 4,4'-dimethyl-2,2'-bipyridine). Moreover, new functionalized complexes C9-C12 were obtained by the base-catalyzed direct alkylation of C2, C4, C6, and C8 with 6-bromo-1-hexene. The complete assignment of the 1H-NMR spectra for the two new ligands (L1 and L2), and their Ru(II) or Os(II) complexes has been accomplished using a combination of one- and two-dimensional NMR techniques. The JH,H values have been determined for the majority of the resonances.
    Molecules 01/2010; 15(3):1324-39. · 2.39 Impact Factor
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Keywords

complexes
 
heteroleptic dipyrrinato/2,2'-bipyridine complexes
 
resonance Raman
 
ruthenium(II)
 

Serena J Smalley