A Reexamination of the Walsh‐ and Förster—Coulson—Moffitt‐ (F.C.M.) Orbital Concept, and its Relevance for the Interpretation of PE Spectra
作者:
Evi Honegger,
Edgar Heilbronner,
Andreas Schmelzer,
Wang Jian‐Qi,
期刊:
Israel Journal of Chemistry
(WILEY Available online 1982)
卷期:
Volume 22,
issue 1
页码: 3-10
ISSN:0021-2148
年代: 1982
DOI:10.1002/ijch.198200003
出版商: WILEY‐VCH Verlag
数据来源: WILEY
摘要:
AbstractContrary to what is often believed, the description of the bonding orbitals of cyclopropane in terms of the so‐called Walsh‐orbitals or F.C.M.‐ (bent‐bond) ‐orbitals isnotequivalent. These two sets of orbitals transform into each other only if their antibonding counterparts are taken into account. The bent‐bond orbitals can be obtained directly from the set of occupied canonical SCF orbitals of cyclopropane via a unitary transformation into localized orbitals. In contrast, the bonding Walsh‐orbitals are not contained in the occupied manifold of the canonical orbitals, because of their non‐equivalence to the F.C.M.‐ orbitals. This is the reason why the anti‐bonding Walsh‐orbitals have to be taken into consideration if one wants to draw valid conclusions, e.g., about the photoelectron spectra of compounds containing th
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