On the Spectral Similarities between 1,2,6,7-Tetracyano-3,5-dihydro-3,5-diiminopyrrolizinato Complexes and Phthalocyanines – X-ray Crystal and Molecular Structure of Two Mixed Monopyrrolizinato Nickel(II) Complexes with the 2,4-tert-Butylacetylacetonide Ligand
✍ Scribed by Alberto Flamini; Vincenzo Fares; Augusto Pifferi
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 414 KB
- Volume
- 2000
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Complexes of Ni II , Cu II , Zn II , and Co III containing the 1,2,6,7tetracyano-3,5-dihydro-3,5-diiminopyrrolizinide (L) and the 2,4-tert-butylacetylacetonide (DPM) ligands have been synthesized and characterized. The absorption optical spectra of these species and of the corresponding ML 2 complexes in coordinating solvents are compared with those of metalphthalocyanines (MPc) and hydrogen-phthalocyanine (H 2 Pc), respectively. The comparison shows a close similarity, especially for the nickel-containing species, in the low-energy spectral region where the first πǞπ* transitions occur (Q band). The Q band position of the pyrrolizinato complexes