| http://www.w3.org/ns/prov#value | - each L and, where applicable, L??? independently represents a group selected from hydrogen, halo (e.g. Cl, Br and the like), and hydrocarbon based radical or group, such as methyl, ethyl, propyl (each isomer), butyl (each isomer),dimethyl amine, 1,3-butadiene-1,4-diyl, 1,4-pentadiene-1,5-diyl, C4 or C5 alkylene and the like, associated through a covalent bond to M, or the two L groups together rep
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