https://itq.upv-csic.es/wp-content/uploads/2025/09/logos.unidos.1.color_.newdate-1-400x73.png00KCB-Studiohttps://itq.upv-csic.es/wp-content/uploads/2025/09/logos.unidos.1.color_.newdate-1-400x73.pngKCB-Studio2012-01-12 21:04:242012-01-12 21:04:24Intermolecular [2 + 2] cycloaddition of alkyne-alkene catalyzed by Au(I) complexes. what are the catalytic sites involved?