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oai:docta.ucm.es:20.500.14352/719022023-08-26T05:01:54Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Ríos, Pablo author Conejero, Salvador author Fernández López, Israel author 2022-07-28 The ambiguous bonding situation of σ-E−H (E=Si, B) complexes in transition metal compounds has been rationalized by means of Density Functional Theory calculations. To this end, the combination of the Energy Decomposition Analysis (EDA) method and its Natural Orbital for Chemical Valance (NOCV) extension has been applied to representative complexes described in the literature where the possible η1 versus η2 coordination mode is not unambiguously defined. Our quantitative analyses, which complement previous data based on the application of the Quantum Theory of Atoms in Molecules (QTAIM) approach, indicate that there exists a continuum between genuine η1 and η2 modes depending mainly on the strength of the backdonation. Finally, we also applied this EDA-NOCV approach to related main-group species where the backdonation is minimal. 0947-6539 10.1002/chem.202201920 https://hdl.handle.net/20.500.14352/71902 https://doi.org/10.1002/chem.202201920 Bonding Situation of σ‐E−H Complexes in Transition Metal and Main Group Compounds