%0 Journal Article %T Conformational Control of Chemical Reactivity for Surface‐Confined Ru‐Porphyrins %+ Physics Department E20 %+ Diamond Light Source %+ Imperial College London %+ Département de Chimie, École Normale Supérieure %+ Université de recherche Paris-Sciences-et-Lettres (PSL) %+ Sorbonne Université (SU) %+ Centre National de la Recherche Scientifique (CNRS) %A Knecht, Peter %A Reichert, Joachim %A Deimel, Peter %A Feulner, Peter %A Haag, Felix %A Allegretti, Francesco %A Garnica, Manuela %A Schwarz, Martin %A Auwärter, Willi %A Ryan, Paul %A Lee, Tien‐lin %A Duncan, David %A Seitsonen, Ari Paavo %A Barth, Johannes %A Papageorgiou, Anthoula %< avec comité de lecture %@ 0044-8249 %J Angewandte Chemie %I Wiley-VCH Verlag %V 133 %N 30 %P 16697-16703 %8 2021-07-19 %D 2021 %R 10.1002/ange.202104075 %Z Physics [physics]Journal articles %X We assess the crucial role of tetrapyrrole flexibility in the CO ligation to distinct Ru-porphyrins supported on an atomistically well-defined Ag(111) substrate. Our systematic real-space visualisation and manipulation experiments with scanning tunnelling microscopy directly probe the ligation, while bond-resolving atomic force microscopy and X-ray standing-wave measurements characterise the geometry, X-ray and ultraviolet photoelectron spectroscopy the electronic structure, and temperature-programmed desorption the binding strength. Density-functional-theory calculations provide additional insight into the functional interface. We unambiguously demonstrate that the substituents regulate the interfacial conformational adaptability, either promoting or obstructing the uptake of axial CO adducts. %G English %L cea-04076225 %U https://cea.hal.science/cea-04076225 %~ CEA %~ CNRS %~ SORBONNE-UNIVERSITE %~ SORBONNE-UNIV %~ SU-TI %~ ALLIANCE-SU