Patent ID: 8236915

Claim:
A complex of Formula (I) or Formula (II) wherein: G is Mn, Fe, Ni, or Co; each occurrence of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 is independently hydrogen, C1-18 alkyl, C1-C18 substituted alkyl, aryl, substituted aryl, or an inert functional group, wherein R 2 -R 9 , other than hydrogen, optionally contain at least one heteroatom; each occurrence of R 23 is independently C1-C18 alkyl, C1-C18 substituted alkyl, aryl or substituted aryl, wherein R 23 optionally contains at least one heteroatom; optionally any two of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 23 vicinal to one another taken together may form a ring being a substituted or unsubstituted, saturated, or unsaturated cyclic structure; L 1 -L 2 is wherein each occurrence of R 10 , R 11 , R 13 , R 14 , R 15 and R 16 is independently hydrogen, C1-C18 alkyl, C2-C18 alkenyl, or C2-C18 alkynyl, wherein R 10 , R 11 , R 13 , R 14 , R 15 and R 16 , other than hydrogen, optionally contain at least one heteroatom, and R 10 , R 11 , R 13 , R 14 , R 15 and R 16 , other than hydrogen, are optionally substituted, each occurrence of R 12 is independently C1-C18 alkyl, C1-C18 substituted alkyl, C2-C18 alkenyl, C2-C18 substituted alkenyl, C2-C18 alkynyl, C2-C18 substituted alkynyl, aryl, substituted aryl, wherein R 12 optionally contains at least one heteroatom; optionally any two of R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 taken together form a ring being a substituted or unsubstituted, saturated or unsaturated cyclic structure; each occurrence of R 17 and R 18 is independently alkyl, substituted alkyl, aryl, or substituted aryl, wherein each of R 17 and R 18 optionally contains at least one heteroatom, and wherein R 17 and R 18 taken together optionally form a ring being a substituted or unsubstituted, saturated or unsaturated cyclic structure; each occurrence of R 19 and R 20 is independently a covalent bond that connects Si and C, an alkyl, substituted alkyl, or a heteroatom, wherein R 19 and R 20 optionally contain at least one heteroatom; wherein L 1 -L 2 bonds with G through unsaturated sites S 1 and S 2 ; with the proviso that (1) R 1 in Formula (I) is hydrogen, methyl, ethyl or n-propyl; and (2) L 1 -L 2 of Formula (A) is selected from the group consisting of 1,5-cyclooctadienes, dicyclopentadienes, and norbornadienes.