Answer the following about the compound fulvalene, for 10 points each.
[10e] An errant attempt at synthesizing fulvalene by Kealy and Pauson led to the discovery of ferrocene, which is an organo-[this type of material] compound. These conductive materials include copper and silver.
ANSWER: metals [accept transition metals or organometallic compounds]
[10h] Fulvalene can dimerize through this reaction, which is a 4 plus 2 cycloaddition between a diene and a dienophile.
ANSWER: Diels-Alder reaction
[10m] Fulvalene consists of two rings with this number of carbons joined together with a double bond. This is also the number of atoms coordinated to the center of a trigonal bipyramidal compound.
ANSWER: five
<Chemistry>