Zinc(II) complexes of substituted tetraphenylporphyrins, Zn[T(X-P)P], where X = H, p-F, p-Cl, m-Cl, p-CH 3 O, and m-CH 3 O, have been synthesized and characterized. Peripheral substitution shows marked changes in the chemical shifts of the phenyl proton resonances and E 1/2 values of the redox coupl
β¦ LIBER β¦
Ground electronic states of ZrO+, HfO+, and Nb+2. ESR spectra of the matrix-isolated ions
β Scribed by R.J. Van Zee; S. Li; W. Weltner Jr.
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 558 KB
- Volume
- 217
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
ZrO+, HfO+, and Nb$ molecular ions formed during laser-vaporization of their respective metals and/or oxides were trapped in rare-gas matrices at 4 K. X-band ESR spectra exhibited characteristic metal hypertine splittings and indicated that each ion has a 2C ground state. The derived magnetic parameters and spin characteristics for ZrO+ and Nb: are discussed relative to the corresponding neutral diatomics. Analysis of the HfW spectra was incomplete, only g, could be accurately determined.
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