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Single-Ion Magnetism of the [Dy^III(hfac)₄]^- Anions in the Crystalline Semiconductor {TSeT_1.5}^●+[Dy^III(hfac)₄]^- Containing Weakly Dimerized Stacks of Tetraselenatetracene.

ABSTRACT: The oxidation of tetraselenatetracene (TSeT) by tetracyanoquinodimethane in the presence of dysprosium(III) tris(hexafluoroacetylacetonate), Dy^III(hfac)₃, produces black crystals of {TSeT_1.5}^●+[Dy^III(hfac)₄]^- (1) salt, which combines conducting and magnetic sublattices. It contains one-dimensional stacks composed of partially oxidized TSeT molecules (formal averaged charge is +2/3). Dimers and monomers can be outlined within these stacks with charge and spin density redistribution. The spin triplet state of the dimers is populated above 128 K with an estimated singlet-triplet energy gap of 542 K, whereas spins localized on the monomers show paramagnetic behavior. A semiconducting behavior is observed for

SUBMITTER: Flakina AM

PROVIDER: S-EPMC11311655 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature

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Single-Ion Magnetism of the [Dy^III(hfac)₄]^- Anions in the Crystalline Semiconductor {TSeT_1.5}^●+[Dy^III(hfac)₄]^- Containing Weakly Dimerized Stacks of Tetraselenatetracene.

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Single-Ion Magnetism of the [DyIII(hfac)4]- Anions in the Crystalline Semiconductor {TSeT1.5}●+[DyIII(hfac)4]- Containing Weakly Dimerized Stacks of Tetraselenatetracene.

OmicsDI is part of the ELIXIR infrastructure

Tweets

Single-Ion Magnetism of the [Dy^III(hfac)₄]^- Anions in the Crystalline Semiconductor {TSeT_1.5}^●+[Dy^III(hfac)₄]^- Containing Weakly Dimerized Stacks of Tetraselenatetracene.