| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1302812 | Inorganic Chemistry Communications | 2011 | 4 Pages |
Paramagnetic Cl3Ru(L) complexes of tridentate ligands (2a: L = 1a = 4′-(p-bromophenyl)-2,2′:6′,2″-terpyridine; 2b: L = 1b = 6-(p-bromophenyl)-2,4-dipyrid-2-yl-1,3,5-triazine) were synthesized in a high-yield method with facile isolation of these useful synthons. The complexes were isolated in high purity and were characterized by several methods, including standard techniques such as 1H NMR and electrospray ionization mass spectrometry. The 1H NMR of the complexes displayed peaks from + 10 to − 37 ppm, with the protons ortho to the nitrogen atoms coordinated to the paramagnetic centre being shifted the most (2a: H6,6″ = − 35.3 ppm; 2b: H6,6″ = − 26.1 ppm), while the protons on the non-bonding phenyl rings were relatively unchanged with respect to their uncomplexed ligands. The electronic absorption spectra of the complexes displayed both 1LMCT bands (Cl-to-Ru, 2a: λmax = 405 nm; 2b: λmax = 420 nm) and 1MLCT (Ru-to-L, 2a: λmax = 486 nm; 2b: λmax = 567 nm) bands. Due to the ease of purification and high yields, the use of complex 3, first introduced by Chatt, is the method of choice to form Cl3Ru(L) complexes of tridentate ligands.
Graphical AbstractParamagnetic Cl3Ru(L) complexes of the tridentate ligands 2,2′:6′,2″-terpyridine and 2,4-dipyrid-2-yl-1,3,5-triazine were synthesized in high purity and were characterized by 1H NMR, with peaks ranging from + 10 to − 37 ppm.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Paramagnetic Cl3Ru(L) complexes of tridentate ligands were isolated in high purity and were characterized by several methods. ► The 1H NMR of the complexes displayed peaks from + 10 to − 37 ppm. ► The electronic absorption spectra of the complexes displayed both 1LMCT bands and 1MLCT bands.
