| http://www.w3.org/ns/prov#value | - Ru, Rh and Ir, R1 is a solid support of the crosslinked or non-crosslinked, organic polymer type and preferably a radical of such a polymer wich an alkyl halide termination or a silica derivative complying with the formula: or the formula: S representing a silica gel, b being between 1 and 4 and preferably equal to 3 and R7 being an alkyl group or a hydrogen atom, and R2 represents the hydrogen at
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