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Darstellung und Charakterisierung von Biscyanophthalocyaninatoferraten(III)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Küppers, H. Kennedy, Brendan J. Murray, Keith S. |
| Copyright Year | 1984 |
| Abstract | Abstract The preparation of bis-cyanophthalocyaninatoferrates(III) with different bulky cations is described. The redox behaviour was studied by cyclic voltammetry, and the results confirmed by appropriate chemical reduction and oxidation reactions. Reactions with bases and acids as well as the redox reactions are governed by the strong trans-efiect of CN- favouring the formation of the monocyano or mixed ligand monocyano complexes. The ESR and Mössbauer spectra as well as the magnetic susceptibility studies (4 .2 -300 K) indicate a low-spin Fe(III) complex with a pseudooctahedral 2T2-groundstate. The IR and Resonance Raman (RR) spectra were investigated. By comparison with similar electronic Raman transitions in the low-temperature Raman spectra of K3[Fe(CN)6] and Na2[Fe(CN)5NO] • 2H2O the RR-enhanced band at 525 cm-1 in the 80 K RR-spectrum is assigned to the intraconfigurational Raman transitions between the groundstate spin-orbit split components Г7g →Г7g, Г6g(D4h*) yielding the spin-orbit coupling parameter ζFe = 350 cm-1. In the FIR-spectrum the F e-C-stretching vibration (a2u) is localized at 350 cm -1 as confirmed by comparison with the FIR-spectra FeXPc(2-) (X = F. Cl. Br, I). The UV - VIS spectrum was measured together with those of the bis-cyano complexes of Fe(II) and Co(III). The splitting of the Q-band (a2ueg) is discussed. Extra-bands at 540. 610 and 775 nm are assigned to Pc →Fe-electron transfer. A comparison with the spectra of the H2S04 adduct and the phthalocyanine- π-cation radical is presented. |
| Starting Page | 1478 |
| Ending Page | 1489 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.1515/znb-1984-1106 |
| Volume Number | 39 |
| Alternate Webpage(s) | http://zfn.mpdl.mpg.de/data/Reihe_B/39/ZNB-1984-39b-1478.pdf |
| Alternate Webpage(s) | https://doi.org/10.1515/znb-1984-1106 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
