Metal valence structures in 1-D mixed-metal complexes [Ni1-xPdxX(chxn)2]X2 studied by solid NMR

Noriyoshi Kimura; Masataka Kano; Toshio Manabe; Masahiro Yamashita; Ryuichi Ikeda

doi:10.1016/S0379-6779(00)00858-4

Metal valence structures in 1-D mixed-metal complexes [Ni_1-xPd_xX(chxn)₂]X₂ studied by solid NMR

Noriyoshi Kimura, Masataka Kano, Toshio Manabe, Masahiro Yamashita, Ryuichi Ikeda

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

5 Citations (Scopus)

Abstract

¹³C magic-angle-spinning NMR spectra in solid were measured in mixed-metal 1-D complexes [Ni_1-xPd_xX(chxn)₂]X₂ (X: Cl, Br; 0.0≤x ≤1.0) where the antiferromagnetically coupled paramagnetic -X-Ni³⁺-X-Ni³⁺- chains are formed at x = 0.0, while the mixed-valence -X-Pd²⁺-X-Pd⁴⁺- state is made at x = 1.0. Upon increasing x from 0.0, ¹³C spectra in the C_α position in the chxn ligand was broadened and shifted from original Pd²⁺ and Pd⁴⁺ positions indicating the fluctuation of Pd valency in mixed states. A marked spectrum broadening observed in C_β is also attributable to the effect from the partial mixing of paramagnetic Pd³⁺sites in consistent with reported ESR results.

Original language	English
Pages (from-to)	777-778
Number of pages	2
Journal	Synthetic Metals
Volume	120
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(00)00858-4
Publication status	Published - 2001 Mar 15
Externally published	Yes

Keywords

Nuclear Magnetic Resonance Spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0379-6779(00)00858-4

Cite this

@article{d59342b820ce4615b9e1508aba6c5130,

title = "Metal valence structures in 1-D mixed-metal complexes [Ni1-xPdxX(chxn)2]X2 studied by solid NMR",

abstract = "13C magic-angle-spinning NMR spectra in solid were measured in mixed-metal 1-D complexes [Ni1-xPdxX(chxn)2]X2 (X: Cl, Br; 0.0≤x ≤1.0) where the antiferromagnetically coupled paramagnetic -X-Ni3+-X-Ni3+- chains are formed at x = 0.0, while the mixed-valence -X-Pd2+-X-Pd4+- state is made at x = 1.0. Upon increasing x from 0.0, 13C spectra in the Cα position in the chxn ligand was broadened and shifted from original Pd2+ and Pd4+ positions indicating the fluctuation of Pd valency in mixed states. A marked spectrum broadening observed in Cβ is also attributable to the effect from the partial mixing of paramagnetic Pd3+sites in consistent with reported ESR results.",

keywords = "Nuclear Magnetic Resonance Spectroscopy",

author = "Noriyoshi Kimura and Masataka Kano and Toshio Manabe and Masahiro Yamashita and Ryuichi Ikeda",

year = "2001",

month = mar,

day = "15",

doi = "10.1016/S0379-6779(00)00858-4",

language = "English",

volume = "120",

pages = "777--778",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

number = "1-3",

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T1 - Metal valence structures in 1-D mixed-metal complexes [Ni1-xPdxX(chxn)2]X2 studied by solid NMR

AU - Kimura, Noriyoshi

AU - Kano, Masataka

AU - Manabe, Toshio

AU - Yamashita, Masahiro

AU - Ikeda, Ryuichi

PY - 2001/3/15

Y1 - 2001/3/15

N2 - 13C magic-angle-spinning NMR spectra in solid were measured in mixed-metal 1-D complexes [Ni1-xPdxX(chxn)2]X2 (X: Cl, Br; 0.0≤x ≤1.0) where the antiferromagnetically coupled paramagnetic -X-Ni3+-X-Ni3+- chains are formed at x = 0.0, while the mixed-valence -X-Pd2+-X-Pd4+- state is made at x = 1.0. Upon increasing x from 0.0, 13C spectra in the Cα position in the chxn ligand was broadened and shifted from original Pd2+ and Pd4+ positions indicating the fluctuation of Pd valency in mixed states. A marked spectrum broadening observed in Cβ is also attributable to the effect from the partial mixing of paramagnetic Pd3+sites in consistent with reported ESR results.

AB - 13C magic-angle-spinning NMR spectra in solid were measured in mixed-metal 1-D complexes [Ni1-xPdxX(chxn)2]X2 (X: Cl, Br; 0.0≤x ≤1.0) where the antiferromagnetically coupled paramagnetic -X-Ni3+-X-Ni3+- chains are formed at x = 0.0, while the mixed-valence -X-Pd2+-X-Pd4+- state is made at x = 1.0. Upon increasing x from 0.0, 13C spectra in the Cα position in the chxn ligand was broadened and shifted from original Pd2+ and Pd4+ positions indicating the fluctuation of Pd valency in mixed states. A marked spectrum broadening observed in Cβ is also attributable to the effect from the partial mixing of paramagnetic Pd3+sites in consistent with reported ESR results.

KW - Nuclear Magnetic Resonance Spectroscopy

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