Patent ID: 7271277

Claim:
A fulvene compound represented by the following Chemical Formula 7 wherein: each of R 1 , and R 2 is individually or simultaneously a C 1 to C 20 alkyl, alkenyl, alkylaryl, arylalkyl, or aryl, a C 1 to C 20 alkyl or aryl having an oxygen atom or a nitrogen atom, or a group 14 metalloid radical substituted by a hydrocarbyl; and each of R 3 and R 4 is individually or simultaneously a hydrogen, a C 1 to C 20 alkyl, alkenyl, alkylaryl, arylalkyl, or aryl, a C 1 to C 20 alkyl or aryl having an oxygen atom or a nitrogen atom, or a group 14 metalloid radical substituted by a hydrocarbyl, and R 3 and R 4 are linked by an alkylidine radical including an alkyl or aryl radical to form a ring.