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Homo- and heteroleptic bis-tridentate ruthenium(ii) and osmium(ii) complexes of compositions [(tpy-PhCH3)Ru(tpy-HImzPh 3)](ClO4)2 (1), [(H2pbbzim)Ru(tpy- HImzPh3)] (ClO4)2 (2) and [M(tpy-HImzPh 3)2](ClO4)2 [M = RuII (3) and OsII (4)], where tpy-PhCH3 = p-methylphenyl terpyridine, H2pbbzim = 2,6-bis(benzimidazole-2-yl)pyridine and tpy-HImzPh3 = 4?-[4-(4,5-diphenyl-1H-imidazol-2-yl)-phenyl]-[2, 2?:6?,2??]terpyridine, have been synthesized and characterized by using standard analytical and spectroscopic techniques. These compounds were designed to increase the room temperature excited-state lifetimes of bisterpyridine-type ruthenium(ii) and osmium(ii) complexes. The X-ray crystal structures of two homoleptic complexes 3 and 4 have been determined and show that both the compounds crystallized in orthorhombic form with space group Fddd. The photophysical and redox properties of the complexes have been thoroughly investigated. All the complexes display moderately strong luminescence at room temperature with lifetimes in the range of 6-35 ns. The complexes are found to undergo one reversible oxidation in the positive potential window (0 to +1.6 V) and one irreversible and two successive quasi-reversible reductions in the negative potential window (0 to -2.0 V). The influence of solvents on the photophysical properties of the complexes has also been investigated in detail. The Royal Society of Chemistry 2012.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Recommanded Product: Bis(benzonitrile)palladium chloride, you can also check out more blogs about14220-64-5
Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method