Dinuclear luminescent

The compound belongs to the recently reported class of dinuclear, luminescent Re(I) complexes of general formula [Re2(p-Cl)2(CO)6(p-l,2-diazine)] (207,208), which display intense, broad, and featureless emission in fluid solution from excited state that can be consistently ascribed to a MLCT. 

Neve, F Crispini, A. Serroni, S. Loiseau, F. Campagna, S. (2001). Novel dinuclear luminescent compounds based on iridium(III) cyclometalated chromophores and containing bridging ligands with ester-linked chelating sites. Inorganic Chemistry, Vol. 40, pp. 1093-1101. 

Mohamed, A.A., Kani, I., Ramirez, A.O. and Fackler, J.P. Jr (2004) Synthesis, characterization, and luminescent properties of dinuclear gold(I) xanthate complexes X-ray structure of [Au2(nBu-xanthate)2j. Inorganic Chemistry, 43, 3833-3839. 

Li, D., Che, C.-M., Kwong, H.-L. and Yam, V.W.-W. (1992) Photoinduced C-C bond formation from alkyl halides catalysed by luminescent dinuclear gold(I) and copper(l) complexes. Journal of the Chemical Society, Dalton Transactions, 3325-3329. 

In the mechanism of an interfacial catalysis, the structure and reactivity of the interfacial complex is very important, as well as those of the ligand itself. Recently, a powerful technique to measure the dynamic property of the interfacial complex was developed time resolved total reflection fluorometry. This technique was applied for the detection of the interfacial complex of Eu(lII), which was formed at the evanescent region of the interface when bathophenanthroline sulfate (bps) was added to the Eu(lII) with 2-thenoyl-trifuluoroacetone (Htta) extraction system [11]. The experimental observation of the double component luminescence decay profile showed the presence of dinuclear complex at the interface as illustrated in Scheme 5. The lifetime (31 /as) of the dinuclear complex was much shorter than the lifetime (98 /as) for an aqua-Eu(III) ion which has nine co-ordinating water molecules, because of a charge transfer deactivation. 

The luminescent, dinuclear platinum(II) species [Pt2(/x-S)2(dppy)4] (134) can be prepared by treating [PtCl2(dppy)2] with NaSH in the presence of NEt3 under anaerobic conditions.331 When the complex is dissolved in CH2C12 solution, pale-yellow crystals of [Pt(S2CH2)(dppy)2] (135) are formed, the first example of a four-membered, saturated dithiolato platinacycle. 

The most straightforward synthesis of compounds (L)AuAr uses the metathesis of (L)AuX precursors with aryllithium reagents, as, for example, executed for the preparation of (Ph3P)AuPh. The crystal structure of this benchmark complex has been determined. The linear coordination geometry is as expected. No aurophilic contacts are discernible in the crystal packing. Short Au- -Au contacts are observed, however, in the dinuclear compound (dppm)(AuPh)2 with an intramolecular intermetallic distance of 3.154(1) A. This complex shows a UV-VIS absorption at 290-300 nm and is luminescent in fluid solution at room temperature.1... 

Yam VW-W, Chan KH-Y, Wong KM-C, Chu BW-K. Luminescent dinuclear platinum(II) ter-pyridine complexes with a flexible bridge and sticky ends. Angew Chem Int Ed 2006 45 6169-6173. 

Martin, N. Biinzli, J.-C. G. McKee, V. Piguet, C. Hopfgartner, G. Self-assembled dinuclear lanthanide helicates substantial luminescence enhancement upon replacing terminal benzimidazole groups by carboxamide binding units. Inorg. Chem. 1998, 37, 577-589. 

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