| http://www.w3.org/ns/prov#value | - n atoms or two adjacent carbon atoms are joined together to form a C4 -C6 ring, R is a C1 -C4 alkylene radical, a dialkyl germanium or silicone or an alkyl phosphine or amine radical bridging two (C5 R'm) rings, Q is a hydrocarbyl radical such as aryl, alKyl, alkenyl, alkylaryl, or arylalkyl radical having from 1-20 carbon atoms or halogen and can be the same or different, Q' is an alkylidene rad
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