Michael D. Fryzuk, Michael J. Jonker and Steven J. Rettig
Two maltol molecules can be deprotonated and coordinated to RuII to generate a series of octahedral complexes having the general formula Ru(ma)2L2 (ma = C6H5O3; L = PPh3, Me2SO; L2 = cycloocta-1,5-diene); when L = PPh3, a precursor for the dimerization of phenylacetylene is obtained.