Data for: Transition Metal-free Carboxylation of Terminal Alkynes with Carbon Dioxide through Dual Activation: Synthesis of Propiolic Acids

NMR spectra of mechanistic study and copies of 1H and 13C NMR spectra of products.机理研究所用的核磁共振（Nuclear Magnetic Resonance, NMR）谱图，以及产物的氢谱（¹H NMR）与碳谱（¹³C NMR）的副本。