Synthesis and structures of two ruthenium dibenzoylmethane triphenylphosphine mixed ligand complexes
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The reaction of dibenzoylmethane (HDBM) with [RuCl2(PPh3)3] in benzene in the presence of a supporting base (Et3N) under reflux gives two different complexes, the side product as a green-yellow Ru(III) compound of composition [RuIIICl2(DBM)(PPh3)2] (2) and the main product as a red Ru(II) complex of composition [RuII(DBM)2(PPh3)2] (3). The products were studied by spectroscopic methods, cyclic voltammetry and X-ray single crystal diffraction. The molecular structure of 2 shows a distorted octahedral environment around the Ru atom with two phosphine ligands in trans positions. The octahedral complex 3 shows a cis arrangement of two phosphine ligands.
KeywordsAcac PPh3 RuCl2 Phosphine Ligand Elemental Anal
The authors would like to thank the Ministry of Science and Technology of Vietnam for financial support and Dr. Adelheid Hagenbach (FU Berlin) for her kind help in the collection of the X-ray diffraction data.
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