Electronic Communication in Luminescent Dicyanorhenate-Bridged Homotrinuclear Rhenium(I) Complexes.

A series of cyano-bridged homotrinuclear Re(I) complexes with the general formula of {[Re]'[Re][Re]'} {[Re]' = -[Re(CO)(LL)(X)]; [Re] = -[(NC)Re(CO)(phen)(CN)]-; LL = diimine, diphosphine, or two carbonyl ligands; X = triphenylphosphine or carbonyl ligand} and the corresponding mononuclear complex analogues were synthesized. The structures of most of the trinuclear Re(I) complexes have been determined by X-ray crystallography. The relative orientations of peripheral to central Re(I) units in these structures vary considerably.

Luminescent cyanoruthenate(II)-diimine and cyanoruthenium(II)-diimine complexes.

To improve the emission and excited-state properties of luminescent cyanometalates, new classes of highly solvatochromic luminescent cyanoruthenium(II) and cyanoruthenate(II) complexes of the general formulae [Ru(PR3)2(CN)2(NN)] and K[Ru(PR3)(CN)3(NN)], respectively, were developed. These complexes could be readily synthesized through the ligand-substitution reaction of K2[Ru(CN)4(PR3)2] with a diimine ligand. The geometrical isomerism of these complexes was characterized by using various spectroscopic techniques.

A new class of highly solvatochromic dicyano rhenate(I) diimine complexes--synthesis, photophysics and photocatalysis.

A new class of dicarbonyl dicyano rhenate(I) diimine complexes, cis,trans-[Re(CO)(2)(CN)(2)(N-N)](-), with highly environmentally sensitive MLCT absorption and emission properties was synthesised and characterised. Preliminary experiments revealed that these complexes are active photocatalysts for CO(2) reduction.

Luminescent rhenium(I) complexes with acetylamino- and trifluoroacetylamino-containing phenanthroline ligands: anion-sensing study.

A series of rhenium complexes with acetylamino- and trifluoroacetylamino-containing 1,10-phenanthroline ligands have been synthesized, characterized and their photophysical and electrochemical properties studied. These complexes were found to show significant UV-vis and emission changes on addition of CN(-), F(-) and AcO(-) anions. Their reactivity towards CN(-), F(-) and AcO(-) anions, was also investigated by UV-vis, emission and (1)H NMR spectroscopy.