Near-Degeneracy between the Low- and High-Spin States in an Alternant Hydrocarbon Diradical: Topology and Geometry

Andrzej Rajca; Suchada Utamapanya; Donald J. Smithhisler

doi:10.1021/jo00073a024

Near-Degeneracy between the Low- and High-Spin States in an Alternant Hydrocarbon Diradical: Topology and Geometry

Andrzej Rajca, Suchada Utamapanya, Donald J. Smithhisler

Chemistry

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Treatment of polyarylmethyl diethers with lithium metal in THF gave the corresponding carbodianions; subsequent oxidation with iodine at 180 K produced diradicals, which were studied in frozen THF solutions by SQUID magnetometry in the 2–100 K temperature and 0–5.5 T magnetic field ranges. Magnetization dependence on both the temperature and magnetic field was compared to the model based upon the Heisenberg Hamiltonian plus mean field. Small intramolecular magnetic interactions were found; both diradicals are triplet ground states.

Original language	English (US)
Pages (from-to)	5650-5652
Number of pages	3
Journal	Journal of Organic Chemistry
Volume	58
Issue number	21
DOIs	https://doi.org/10.1021/jo00073a024
State	Published - 1993

ASJC Scopus subject areas

Organic Chemistry

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abstract = "Treatment of polyarylmethyl diethers with lithium metal in THF gave the corresponding carbodianions; subsequent oxidation with iodine at 180 K produced diradicals, which were studied in frozen THF solutions by SQUID magnetometry in the 2–100 K temperature and 0–5.5 T magnetic field ranges. Magnetization dependence on both the temperature and magnetic field was compared to the model based upon the Heisenberg Hamiltonian plus mean field. Small intramolecular magnetic interactions were found; both diradicals are triplet ground states.",

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year = "1993",

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T2 - Topology and Geometry

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AU - Utamapanya, Suchada

AU - Smithhisler, Donald J.

PY - 1993

Y1 - 1993

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AB - Treatment of polyarylmethyl diethers with lithium metal in THF gave the corresponding carbodianions; subsequent oxidation with iodine at 180 K produced diradicals, which were studied in frozen THF solutions by SQUID magnetometry in the 2–100 K temperature and 0–5.5 T magnetic field ranges. Magnetization dependence on both the temperature and magnetic field was compared to the model based upon the Heisenberg Hamiltonian plus mean field. Small intramolecular magnetic interactions were found; both diradicals are triplet ground states.

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JF - Journal of Organic Chemistry

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ER -

Near-Degeneracy between the Low- and High-Spin States in an Alternant Hydrocarbon Diradical: Topology and Geometry

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