Reaction of 1H-1-oxo-2,4,6,8-tetrakis(tert-butyl)phenoxazine with certain group II-IV metals
It has already been shown that 2-amino-4,6-di(tert-butyl)phenol reacts with 3,5-di(tert-butyl)-o-benzoquinone to form 1H-1-oxo-2,4,6,8-tetrakis(tert-butyl)phenoxazine (I), which is readily reduced by alkali metals to the corresponding semiquinone anion-radical (II), and further to the diamagnetic dianion (IIA). They made use of this ability of (I) to undergo reduction to prepare anion-radical salts with different group II-IV metals in the form of their amalgams. In the EPR spectrum of the anion-radical complex (III) formed in the reduction of (I) by a thallium amalgam, the HFI constants of the unpaired electron with magnetic nuclei of the organic ligand are close to those of the K-salt (II), and a substantial HFI is observed with the /sup 203,205/Tl nuclei. This unequivocally proves that the complex has a semiquinone structure, since an HFI on the /sup 203,205/Tl nuclei of such an order of magnitude is characteristic of o-benzoquinone salts with a thallium cation.
- Research Organization:
- A.N. Nesmeyanov Institute of Organoelemental Compounds, Moscow, USSR
- OSTI ID:
- 5846101
- Journal Information:
- Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Journal Name: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States) Vol. 36:1; ISSN BACCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METAL COMPLEXES
ALUMINIUM COMPLEXES
AZINES
CADMIUM COMPLEXES
CHEMICAL REACTION KINETICS
COMPLEXES
COMPLEXOMETRY
CONFIGURATION INTERACTION
COUPLING
COUPLING CONSTANTS
ELECTRON SPIN RESONANCE
ELECTRONIC STRUCTURE
GALLIUM COMPLEXES
HEAVY NUCLEI
HETEROCYCLIC COMPOUNDS
HYPERFINE STRUCTURE
INTERMEDIATE COUPLING
ISOTOPE EFFECTS
ISOTOPES
J-J COUPLING
KINETICS
LEAD COMPLEXES
LIGANDS
LIGHT NUCLEI
MAGNETIC RESONANCE
NITROGEN 14
NITROGEN ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
POTASSIUM COMPLEXES
REACTION KINETICS
RESONANCE
STABLE ISOTOPES
THALLIUM 203
THALLIUM 205
THALLIUM COMPLEXES
THALLIUM ISOTOPES
TIN COMPLEXES
ZINC COMPLEXES