| http://www.w3.org/ns/prov#value | - logenated, a C8 -C10 -aryl group, an --NR16 2, --SR16, --OSiR16 3, --SiR16 3 or --PR16 2 radical, in which R16 is a halogen atom, a C1 -C10 -alkyl group or a C8 -C10 -aryl group, R4 to R7 and R9 to R12 are identical or different and are as defined for R3, or adjacent radicals R4 to R12, together with the atoms connecting them, form one or more aromatic or aliphatic rings, or the radicals R5 and R8
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