Characterization of dimeric (carboxylato)copper(II) complexes by electron spin resonance spectra. Correlation of ESR parameters with singlet-triplet energy separations

Yoneichiro Muto, Michio Nakashima, Tadashi Tokii, Ikuo Suzuki, Shigeru Ohba, Omar W. Steward, Michinobu Kato

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Linear correlations with positive slopes have been found for the zero-field splitting parameters (D) and the anisotropic exchange parameters (D ex) vs the singlet-triplet separations (-2J) for [Cu 2(O 2CR) 4(L) 2] (R = F 3C, FCH 2 Cl 3C, ClCH 2, CH 3, H, and C 6H 5CO) for a wide range of -2J values, ca. 240-650 cm -1. The values of D and D ex for benzoylformate were found to be the highest ever studied. The quality of the linear relations of -2J, D ex and D with the square of the coefficient of 2p x(C) of the symmetric HOMO of the bridging carboxylate ions, coeff, 2 were found to be in the order, -2J vs coeff 2 > D ex vs coeff 2 > D vs coeff 2. A roughly linear relationship with a negative slope was found for D vs -2J for a system, [Cu 2(O 2CCMe nPh 3-n) 4 (L) 2], in which the -2J values cover a relatively small range, ca. 320-370 cm -1.

Original languageEnglish
Pages (from-to)511-519
Number of pages9
JournalBulletin of the Chemical Society of Japan
Volume75
Issue number3
DOIs
Publication statusPublished - 2002 Mar

Fingerprint

Paramagnetic resonance
Copper
Ions
phenylglyoxylic acid

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Characterization of dimeric (carboxylato)copper(II) complexes by electron spin resonance spectra. Correlation of ESR parameters with singlet-triplet energy separations. / Muto, Yoneichiro; Nakashima, Michio; Tokii, Tadashi; Suzuki, Ikuo; Ohba, Shigeru; Steward, Omar W.; Kato, Michinobu.

In: Bulletin of the Chemical Society of Japan, Vol. 75, No. 3, 03.2002, p. 511-519.

Research output: Contribution to journalArticle

Muto, Yoneichiro ; Nakashima, Michio ; Tokii, Tadashi ; Suzuki, Ikuo ; Ohba, Shigeru ; Steward, Omar W. ; Kato, Michinobu. / Characterization of dimeric (carboxylato)copper(II) complexes by electron spin resonance spectra. Correlation of ESR parameters with singlet-triplet energy separations. In: Bulletin of the Chemical Society of Japan. 2002 ; Vol. 75, No. 3. pp. 511-519.
@article{44a600b090af4cdca91345b8d1d69b3a,
title = "Characterization of dimeric (carboxylato)copper(II) complexes by electron spin resonance spectra. Correlation of ESR parameters with singlet-triplet energy separations",
abstract = "Linear correlations with positive slopes have been found for the zero-field splitting parameters (D) and the anisotropic exchange parameters (D ex) vs the singlet-triplet separations (-2J) for [Cu 2(O 2CR) 4(L) 2] (R = F 3C, FCH 2 Cl 3C, ClCH 2, CH 3, H, and C 6H 5CO) for a wide range of -2J values, ca. 240-650 cm -1. The values of D and D ex for benzoylformate were found to be the highest ever studied. The quality of the linear relations of -2J, D ex and D with the square of the coefficient of 2p x(C) of the symmetric HOMO of the bridging carboxylate ions, coeff, 2 were found to be in the order, -2J vs coeff 2 > D ex vs coeff 2 > D vs coeff 2. A roughly linear relationship with a negative slope was found for D vs -2J for a system, [Cu 2(O 2CCMe nPh 3-n) 4 (L) 2], in which the -2J values cover a relatively small range, ca. 320-370 cm -1.",
author = "Yoneichiro Muto and Michio Nakashima and Tadashi Tokii and Ikuo Suzuki and Shigeru Ohba and Steward, {Omar W.} and Michinobu Kato",
year = "2002",
month = "3",
doi = "10.1246/bcsj.75.511",
language = "English",
volume = "75",
pages = "511--519",
journal = "Bulletin of the Chemical Society of Japan",
issn = "0009-2673",
publisher = "Chemical Society of Japan",
number = "3",

}

TY - JOUR

T1 - Characterization of dimeric (carboxylato)copper(II) complexes by electron spin resonance spectra. Correlation of ESR parameters with singlet-triplet energy separations

AU - Muto, Yoneichiro

AU - Nakashima, Michio

AU - Tokii, Tadashi

AU - Suzuki, Ikuo

AU - Ohba, Shigeru

AU - Steward, Omar W.

AU - Kato, Michinobu

PY - 2002/3

Y1 - 2002/3

N2 - Linear correlations with positive slopes have been found for the zero-field splitting parameters (D) and the anisotropic exchange parameters (D ex) vs the singlet-triplet separations (-2J) for [Cu 2(O 2CR) 4(L) 2] (R = F 3C, FCH 2 Cl 3C, ClCH 2, CH 3, H, and C 6H 5CO) for a wide range of -2J values, ca. 240-650 cm -1. The values of D and D ex for benzoylformate were found to be the highest ever studied. The quality of the linear relations of -2J, D ex and D with the square of the coefficient of 2p x(C) of the symmetric HOMO of the bridging carboxylate ions, coeff, 2 were found to be in the order, -2J vs coeff 2 > D ex vs coeff 2 > D vs coeff 2. A roughly linear relationship with a negative slope was found for D vs -2J for a system, [Cu 2(O 2CCMe nPh 3-n) 4 (L) 2], in which the -2J values cover a relatively small range, ca. 320-370 cm -1.

AB - Linear correlations with positive slopes have been found for the zero-field splitting parameters (D) and the anisotropic exchange parameters (D ex) vs the singlet-triplet separations (-2J) for [Cu 2(O 2CR) 4(L) 2] (R = F 3C, FCH 2 Cl 3C, ClCH 2, CH 3, H, and C 6H 5CO) for a wide range of -2J values, ca. 240-650 cm -1. The values of D and D ex for benzoylformate were found to be the highest ever studied. The quality of the linear relations of -2J, D ex and D with the square of the coefficient of 2p x(C) of the symmetric HOMO of the bridging carboxylate ions, coeff, 2 were found to be in the order, -2J vs coeff 2 > D ex vs coeff 2 > D vs coeff 2. A roughly linear relationship with a negative slope was found for D vs -2J for a system, [Cu 2(O 2CCMe nPh 3-n) 4 (L) 2], in which the -2J values cover a relatively small range, ca. 320-370 cm -1.

UR - http://www.scopus.com/inward/record.url?scp=0036221845&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036221845&partnerID=8YFLogxK

U2 - 10.1246/bcsj.75.511

DO - 10.1246/bcsj.75.511

M3 - Article

VL - 75

SP - 511

EP - 519

JO - Bulletin of the Chemical Society of Japan

JF - Bulletin of the Chemical Society of Japan

SN - 0009-2673

IS - 3

ER -