text: Two equivalents of this compound form a ligand found in a rubidium complex which switches from D3 to C2 symmetry upon excitation.
full_question: Two equivalents of this compound form a ligand found in a rubidium complex which switches from D3 to C2 symmetry upon excitation. Two units of this molecule are coupled then methylated to synthesize the herbicide and ROS generator paraquat. A dicarboxylated derivative of this molecule makes up a significant portion of the mass of bacterial spores. A derivatized form of this compound reacts with an anhydride formed by the Yamaguchi reagent in the Yamaguchi esterification. That derivative of this compound contains a dimethylamino group substituted at the 4 position. Multiple equivalents of this compound are found in the terpy and bipy ligands. A chlorochromate salt of this compound can be used to partially oxidize primary alcohols to aldehydes. This compound and methanol are the primary compounds added to “denature” alcohol. For 10 points name this aromatic compound consisting of a six membered ring with a nitrogen heteroatom.
first_sentence: Two equivalents of this compound form a ligand found in a rubidium complex which switches from D3 to C2 symmetry upon excitation.