Perpendicular orientation Alkoxy-substituted benzoic acids 2 Benzoic acid 2 Catalytic oxidation 2 Copper 2 Crystalline structure 2 Cytochrome b Group 2 Cytochrome c oxidase 2 Dimers 2 Electrochemical characterizations 2 Electrochemistry 2 Electron Transport 2 Electron Transport Complex IV 2 Electron transfer 2 Electron transfer pathways 2 Electron transitions 2 Electronic structure 2 Electrons 2 Enzymes 2 Head-to-head dimers 2 Interaction schemes 2 Interchain interactions 2 Molecular orbitals 2 Molecules 2 Oxidation-Reduction 2 Parallel arrangement 2 Parallel orientation 2 Protein species 2 Rationalization of packing modes 2 Redox cofactors 2