Published in
Elsevier, Mendeleev Communications, 2(25), p. 103-105, 2015
DOI: 10.1016/j.mencom.2015.03.007
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Phosphorescence of a ruthenium(II) hydride-carbonyl complex with 3-hydroxy-2-quinoxalinecarboxylic acid as a co-ligand
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Abstract
The [RuH(CO)(hqxc)(PPh3)2] complex, where hqxc is 3-hydroxy-2-quinoxalinecarboxylate, exhibits strong phosphorescence (quantum yield F = 0.0078) in the solid state giving rise to a significantly Stokes-shifted spectrum (excitation at 484 nm and emission at 687 nm); the lifetime of 6.5 μs is very long compared with 0.68 ns measured for the free hqxc ligand.