| http://www.w3.org/ns/prov#value | - d above wherein each of R1-15, X, n, p, NC and q are as defined and described herein, and M is a transition metal, such as one from any of Groups 4 to 10, in particular one selected from Ti, V, Cr, Mn, Fe, Co, Ni, Pd, Rh, Ru, Mo, Nb, Zr, Hf, Ta, W, Re, Os, Ir or Pt, preferably Fe, Co or Cr and especially Co or Fe.
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