## Abstract A theoretical comparative study of complexes of porphyrin (P), porphyrazine (Pz), and phthalocyanine (Pc) with metal (M) = Fe, Co, Ni, Cu, and Zn has been carried out using a DFT method. The calculations provide a clear elucidation of the ground states for the MP/Pz/Pc molecules and for
Geometry and electronic structure of porphyrins and porphyrazines
โ Scribed by D. Lamoen; M. Parrinello
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 488 KB
- Volume
- 248
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
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 pseudopotentials and plane wave basis functions. Our results are in good agreement with experiment and other ab initio methods using localized basis sets. A comparison between the different molecules is made.
๐ SIMILAR VOLUMES
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 Mul
is presented of the status of quantum chemical studies of porphyrins and related molecules.
The average magnetic susceptibility 0-2-100 K) and magnetisation (105-15500 Oe at 4.2 IQ of two perchlorato manganese(lII) porphyrins establish them to be high-spin, in contrast to the "anomalous" behaviour of analogous iron(M) porphyrins An explanation of the origin of the zero-field splitting in h