We present a theoretical investigation based on density functional theory of the geometry and electronic structure of free base porphyrin and porphyrazine and their magnesium and palladium derivatives. The calculations are performed within the local density approximation and make use of pseudopotent
The electronic structure and geometry of HNF and HBF
β Scribed by Douglas A. Brotchie; Colin Thomson
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 416 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The results of ab initio calculations, making use of the restricted Hartree-Fock scheme, on two radicals -HNF and the postulated species HBF -are presented. Geometry predictions made, using three different basis sets of gaussian orbitals are compared, and the bonding is discussed in terms of the Mulliken population analysis. The structure of various low-lying excited states is also considered.
π SIMILAR VOLUMES
Results 31e presented of ab initio 4cuIations on the BF, and NF, radicrrls. Geometry predictions for these species usirq different gaussian orbital basis sets are compared.
Ab initio calcu!ations at the SCF and CI level have been carried out for the singlet ground state of ortko-benzyne (1,2-del~ydrobenzenc) at a variety of Clv molecular geometries. The principal features of the equilibrium geometry arc: (1) an "acetylenic" ClC2 bond (1.22 A): (2) a C4Cs bond slightly
## Abstract Using ^13^Cβchemical shifts as a probe for the electronic environment of carbon centers, triphenylphosphoniomethanide, the model case of a βreactiveβ phosphorus ylid, was found to have much more zwitterion than PC double bond character (resonance structure __1a__ being dominant). Triphe