Unravelling Chemical Interactions with Principal Interacting Orbital Analysis

Decomposing chemical interactions into bonds and other higher order interactions is a common practice to analyse chemical structures, and gave birth to many chemical concepts, despite the fact that the decomposition itself might be subjective in nature. Fragment molecular orbitals (FMOs) offer a mor...

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Vydáno v:Chemistry : a European journal Ročník 24; číslo 38; s. 9639 - 9650
Hlavní autoři: Zhang, Jing‐Xuan, Sheong, Fu Kit, Lin, Zhenyang
Médium: Journal Article
Jazyk:angličtina
Vydáno: Germany Wiley Subscription Services, Inc 05.07.2018
Témata:
bond theory
Chemical bonds
Chemical interactions
Chemistry
cluster compounds
Computer applications
Decomposition
electronic structure
Molecular chains
Molecular orbitals
orbital interaction
Organic chemistry
Principal components analysis
reaction mechanisms
Statistical analysis
reaction mechanisms
cluster compounds
orbital interaction
bond theory
electronic structure
ISSN:0947-6539, 1521-3765, 1521-3765
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Shrnutí:Decomposing chemical interactions into bonds and other higher order interactions is a common practice to analyse chemical structures, and gave birth to many chemical concepts, despite the fact that the decomposition itself might be subjective in nature. Fragment molecular orbitals (FMOs) offer a more rigorous alternative to such intuition, but might be less interpretable due to extensive delocalisation in FMOs. Inspired by the Principal Component Analysis in statistics, we hereby present a novel framework, Principal Interacting Orbital (PIO) analysis, that can very quickly identify the “dominant interacting orbitals” that are semi‐localised and easily interpretable, while still maintaining mathematical rigor. Many chemical concepts that are often taken for granted, but could not be easily inferred from other computational techniques like FMO analysis, can now be visualised as PIOs. We have also illustrated, through various examples covering both organic and inorganic chemistry, how PIO analysis could help us pinpoint subtle features that might play determining roles in bonding and reactions. Principal Interacting Orbitals: A novel framework has been developed, based on Principal Component Analysis (PCA), to identify the Principal Interacting Orbitals (PIOs) accounting for the bonding interaction between two chemical fragments. The novel framework has been employed to analyse structure, bonding, and reactivity for a number of examples covering various aspects of chemistry.
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ISSN:0947-6539
1521-3765
1521-3765
DOI:10.1002/chem.201801220