Nature of the magnetic interaction in organic radical crystals.4. magnetic interaction in mixed molecular radical crystals

Article Abstract:

The nature of the spin exchange interaction within the half-filled band of one-dimensional stacks of 1-D mixed molecular radical crystals (MMRC) is investigated. It was found that nature and the magnitude of the exchange interaction in MMRCs are significantly different in comparison with the parent MRCs.

Science & research, Basic Chemical Manufacturing, Industrial Organic Chemicals, Organic Chemicals, All Other Miscellaneous Nonmetallic Mineral Product Manufacturing, Crystals, Organic compounds, Chemistry, Physical and theoretical, Physical chemistry, Radicals (Chemistry), Magnetic properties

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Energy spectra of giant polycyclic aromatic hydrocarbons

Article Abstract:

A theoretical study was conducted to analyze the energy spectra of three categories of polybenzenoid hydrocarbons supporting a large number of carbon atoms. The existence of defect states of hydrocarbons with vacancies was also examined. An extended Schrieffer-Heeger model was utilized to determine the geometry of the infinite polymers. Results indicated that point defects resulting from the removal of one or more C atoms from the hydrocarbons generated levels in the energy gap.

Analysis, Polymers, Carbon, Atoms, Hydrocarbons, Polycyclic aromatic compounds

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