| http://www.w3.org/ns/prov#value | - , NR7 R8 and SR9 ; R3, R4, R5, R6, R7 and R8 are hydrogen or hydrocarbon groups; R9 is a hydrocarbon group; ??, ??>0; p, q, r, s???0; m is the atomic valency of M; provided that ??/?????0.5, p+q+r+s=m??+2??, and 0???(r+s)/(??+??)<1.0; the hydrocarbon group above is preferably selected from alkyl groups having 1 to 10 carbon atoms, or aryl groups having 6 to 20 carbon atoms] with a compound capable
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