Patent ID: 8642721

Claim:
A complex represented by Chemical Formula 6: wherein A 1 and A 2 independently represent an oxygen or sulfur atom; two of Xb and Xc are anions of Meisenheimer salt with or without at least one of halogen, nitrogen, oxygen, silicon, sulfur and phosphorus atoms, and the remaining X(s) independently represent a halide ion; BF 4 − ; ClO 4 − ; NO 3 − ; PF 6 − ; HCO 3 − ; (C6-C20)aryloxy anion; (C1-C20)alkylcarboxy anion; (C1-C20)alkoxy anion; (C1-C20)alkylcarbonate anion; (C1-C20)alkylsulfonate anion; (C1-C20)alkylamide anion; or (C1-C20)alkylcarbamate anion; R 62 and R 64 are independently selected from tert-butyl, methyl, ethyl, isopropyl and hydrogen, and R 61 and R 63 independently represent —[YR 51 3-m {(CR 52 R 53 ) n N + R 54 R 55 R 56 } m ], wherein Y represents a carbon or silicon atom, R 51 , R 52 , R 53 , R 54 , R 55 and R 56 independently represent a hydrogen radical; a (C1-C20)alkyl, (C2-C20)alkenyl, (C1-C15)alkyl(C6-C20) aryl or (C6-C20)aryl(C1-C15)alkyl radical with or without at least one of halogen, nitrogen, oxygen, silicon, sulfur and phosphorus atoms; or a hydrocarbyl-substituted metalloid radical of a Group 14 metal, wherein two of R 54 , R 55 and R 56 optionally be linked to each other to form a ring; m represents an integer from 1 to 3; and n represents an integer from 1 to 20; b+c−1 represents an integer that equals to 2×m; and A 3 represents a chemical bond or divalent organic bridge group for linking the two phenyl groups, and wherein the anion of Meisenheimer salt is a compound having the following structural formula: wherein R represents methyl or H; and R′ is selected from H and nitro (—NO 2 ), with the proviso that at least one of the five R′ radicals represents nitro (—NO 2 ).