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), Vol. 36:1; Other Information: Translated from Izestiya Akademii Nauk SSSR, Seriya Khimicheskaya; 36: No. 1, 73-77(Jan 1987)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heterospin biradicals based on new piperidineoxyl-substituted 3,6-di-tert-butyl-o-benzoquinone
Complexes of lanthanum with radical anions of 2,2-bipyridyl and 3,6-di-tert-butyl-o-benzoquinone
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
AZINES
CHEMICAL REACTION KINETICS
ELECTRON SPIN RESONANCE
HYPERFINE STRUCTURE
ORGANOMETALLIC COMPOUNDS
ALUMINIUM COMPLEXES
CADMIUM COMPLEXES
COMPLEXOMETRY
CONFIGURATION INTERACTION
COUPLING CONSTANTS
ELECTRONIC STRUCTURE
GALLIUM COMPLEXES
ISOTOPE EFFECTS
J-J COUPLING
LEAD COMPLEXES
LIGANDS
NITROGEN 14
POTASSIUM COMPLEXES
THALLIUM 203
THALLIUM 205
THALLIUM COMPLEXES
TIN COMPLEXES
ZINC COMPLEXES
ALKALI METAL COMPLEXES
COMPLEXES
COUPLING
HEAVY NUCLEI
HETEROCYCLIC COMPOUNDS
INTERMEDIATE COUPLING
ISOTOPES
KINETICS
LIGHT NUCLEI
MAGNETIC RESONANCE
NITROGEN ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
REACTION KINETICS
RESONANCE
STABLE ISOTOPES
THALLIUM ISOTOPES
400201* - Chemical & Physicochemical Properties
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory