Patent ID: 7439378

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 not linked by an alkylidine radical including an alkyl or aryl radical to form a ring.