Carboxylation chemistry 14 Crystal structure 10 article 8 chemical structure 8 Carbon dioxide 6 Crystallography, X-Ray 6 X ray crystallography 6 carboxylic acid 6 infrared spectroscopy 6 Antiferromagnetism 4 Aromatic compounds 4 Carboxylate groups 4 Carboxylic Acids 4 Celastraceae 4 Copper 4 DFT calculation 4 Electron Spin Resonance Spectroscopy 4 Fluorescence 4 Hydrogen Bonding 4 Hydrogen bonds 4 Infrared spectroscopy 4 Maytenus 4 Maytenus boaria 4 Metabolites 4 Metal ions 4 Molecular Structure 4 Molecules 4 Musculoskeletal system 4 NMR 4