The magnetic vibrational circular dichroism spectra of C6o fullerene in solution are presented for excitation of the 1430 and 1183 cm-l ttu-symmetry fundamental vibrations. These transitions give rise to A-term MVCD of opposite sign (A~/Do= -3.8 and l. 1 ร 10-4, respectively) which are similar in ma
Magnetic vibrational circular dichroism of tetraphenylporphine and metallotetraphenylporphyrins
โ Scribed by Paul V. Croatto; Timothy A. Keiderling
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 500 KB
- Volume
- 144
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Magnetic vibrational circular dichroism spectra of the title compounds are presented for the mid-IR region. The metalloporphytin E. modes have larger A terms than seen previously by an order of magnitude and are 2-3 times larger than in tetraphenylporphine. Comparison to the vibronic model is made.
๐ SIMILAR VOLUMES
A theory of type B magnetic vibrational circular dichroism (MVCD) is developed and applied. The motion of the nuclei is treated classically and the momentum correlation between their motion and the electronic motion is treated explicitly.
In the a, symmetry C-H stretch B,,/D, increases from -z lo-' to = 3~ 10-5/cm-' from Cl to I. These values are correlated to AE for electromc excitation and to the methyl halide results.
## Meso-tetraphenylprophine and its complexes with the dipositive cations of bfg, Xfn, Fe, Cu, and Zn have very similnr photoelectron spectra. Eight major peaks appear in the 6.3 to 2C eV nnge which have positions, shapes and intensities showing only minor variations from compound to compound. Sev
Magnetic-lield-induced circular dichroism of the vq mode of methane at 0.5 cm-' resolution is reported. For the first five members of the R branch, A, /DO is approximately constant, averaging -4.8 x 1 Om4, which corresponds to an average g, of + 0.44. This agrees in sign with and is z 40% higher tha
The magnetic circular dichroism (MCD), induced circular dichroism (ICD) spectra, and the absorption spectra of N-bromophthalimide have been measured. The ICD spectrum of the b-cyclodextrin complex with Nbromophthalimide is also reported. The absorption bands of N-bromophthalimide are assigned. Intr