RT Journal Article T1 Bonding Situation of σ‐E−H Complexes in Transition Metal and Main Group Compounds A1 Ríos, Pablo A1 Conejero, Salvador A1 Fernández López, Israel AB 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. PB Wiley SN 0947-6539 YR 2022 FD 2022-07-28 LK https://hdl.handle.net/20.500.14352/71902 UL https://hdl.handle.net/20.500.14352/71902 LA eng NO CRUE-CSIC (Acuerdos Transformativos 2022) NO Ministerio de Ciencia e Innovación (MICINN) NO Junta de Andalucía DS Docta Complutense RD 17 abr 2025