ESR Study on Local Structure of UV-Induced Midgap States in [Pt(en)2][Pt(en)2Cl2](ClO4)4, en = ethylenediamine

Masamichi Sakai; Noritaka Kuroda; Masashi Suezawa; Yuichiro Nishina; Koji Sumino; Masahiro Yamashita

doi:10.1143/JPSJ.61.1326

ESR Study on Local Structure of UV-Induced Midgap States in [Pt(en)₂][Pt(en)₂Cl₂](ClO₄)₄, en = ethylenediamine

Masamichi Sakai, Noritaka Kuroda, Masashi Suezawa, Yuichiro Nishina, Koji Sumino, Masahiro Yamashita

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

15 Citations (Scopus)

Abstract

The electron spin resonance of the optically induced paramagnetic valence anomalies has been studied in the linear chain complex [Pt(en)2][Pt(en)2Cl2](C1O4)4, en=ethylenediamine. The unpaired spins of 5= 1/2 are found to be confined in the molecular orbitals of dimerized Pt ions and the tightly ligating N atoms and Cl∼ ions. The states have biaxial symmetries with the principal axes of spins nearly parallel to the crystal axes of the orthorhombic phase. These results support the previous assignment that the induced paramagnetic valence anomalies are neutral solitons. At low temperatures, the resonance spectrum exhibits an evidence that the solitons are fluctuating around their equilibrium positions.

Original language	English
Pages (from-to)	1326-1335
Number of pages	10
Journal	journal of the physical society of japan
Volume	61
Issue number	4
DOIs	https://doi.org/10.1143/JPSJ.61.1326
Publication status	Published - 1992 Oct
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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ESR Study on Local Structure of UV-Induced Midgap States in [Pt(en)₂][Pt(en)₂Cl₂](ClO₄)₄, en = ethylenediamine. / Sakai, Masamichi; Kuroda, Noritaka; Suezawa, Masashi; Nishina, Yuichiro; Sumino, Koji; Yamashita, Masahiro.

In: journal of the physical society of japan, Vol. 61, No. 4, 10.1992, p. 1326-1335.

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

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abstract = "The electron spin resonance of the optically induced paramagnetic valence anomalies has been studied in the linear chain complex [Pt(en)2][Pt(en)2Cl2](C1O4)4, en=ethylenediamine. The unpaired spins of 5= 1/2 are found to be confined in the molecular orbitals of dimerized Pt ions and the tightly ligating N atoms and Cl∼ ions. The states have biaxial symmetries with the principal axes of spins nearly parallel to the crystal axes of the orthorhombic phase. These results support the previous assignment that the induced paramagnetic valence anomalies are neutral solitons. At low temperatures, the resonance spectrum exhibits an evidence that the solitons are fluctuating around their equilibrium positions.",

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T1 - ESR Study on Local Structure of UV-Induced Midgap States in [Pt(en)2][Pt(en)2Cl2](ClO4)4, en = ethylenediamine

AU - Sakai, Masamichi

AU - Kuroda, Noritaka

AU - Suezawa, Masashi

AU - Nishina, Yuichiro

AU - Sumino, Koji

AU - Yamashita, Masahiro

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N2 - The electron spin resonance of the optically induced paramagnetic valence anomalies has been studied in the linear chain complex [Pt(en)2][Pt(en)2Cl2](C1O4)4, en=ethylenediamine. The unpaired spins of 5= 1/2 are found to be confined in the molecular orbitals of dimerized Pt ions and the tightly ligating N atoms and Cl∼ ions. The states have biaxial symmetries with the principal axes of spins nearly parallel to the crystal axes of the orthorhombic phase. These results support the previous assignment that the induced paramagnetic valence anomalies are neutral solitons. At low temperatures, the resonance spectrum exhibits an evidence that the solitons are fluctuating around their equilibrium positions.

AB - The electron spin resonance of the optically induced paramagnetic valence anomalies has been studied in the linear chain complex [Pt(en)2][Pt(en)2Cl2](C1O4)4, en=ethylenediamine. The unpaired spins of 5= 1/2 are found to be confined in the molecular orbitals of dimerized Pt ions and the tightly ligating N atoms and Cl∼ ions. The states have biaxial symmetries with the principal axes of spins nearly parallel to the crystal axes of the orthorhombic phase. These results support the previous assignment that the induced paramagnetic valence anomalies are neutral solitons. At low temperatures, the resonance spectrum exhibits an evidence that the solitons are fluctuating around their equilibrium positions.

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