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Volumn 28, Issue 7, 2009, Pages 2005-2019

Spin equilibria in monomeric manganocenes: Solid-state magnetic and EXAFS studies

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON-DONATING GROUPS; ELECTRONIC GROUND STATE; EXAFS STUDIES; EXTENDED X-RAY ABSORPTION FINE STRUCTURES; HIGH-SPIN STATE; LOW TEMPERATURES; MAGNETIC SUSCEPTIBILITY MEASUREMENTS; MANGANOCENE; RAPID COOLING; SPIN CONFIGURATIONS; SPIN CROSSOVERS; SPIN STATE; SPIN TRANSITIONS; STERIC STRAINS; STRUCTURAL TRANSITIONS; X-RAY DATUM; X-RAY DIFFRACTION DATUM;

EID: 65349105361     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om800922j     Document Type: Article
Times cited : (51)

References (80)
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    • 2+ = 0.72 Å (Shannon, R. D. Acta Cnystallogr. A 1976, 32, 751-767).
  • 24
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    • The effective magnetic moment is directly related to the spin and orbit quantum numbers as follows: μeff, 4S(S, 1, LL, 1, 1/2, For ions with A and E ground-state terms, the magnetic properties can be assigned as predominantly spin in nature since most of the orbital angular moment has been quenched. Orbital quenching is nearly complete for ions with A1g ground terms, and as a result, the g values are very close to the free spin value of 2.0 and the zero-field splitting of the spin degeneracies is usually small. Partial quenching is apparent in the other ions with A and E ground-state terms, resulting in g value anisotropies, deviation of the moment from the spin-only value, and larger zero-field splittings of the spin multiplets. For manganocenes, the high-spin isomer with an σA1g ground-state term exhibits a magnetic moment of μeff, 2[2.5 x 3.5]1/2, 5.92 muB, since L
    • B, since L = 0.
  • 38
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    • Marchivie, M.; Guionneau. P.; Létard, J.-F.; Chasseau, D.; Howard, J. A. K. J. Phys. Chem. Solids 2004, 6.5, 17-23.
    • Marchivie, M.; Guionneau. P.; Létard, J.-F.; Chasseau, D.; Howard, J. A. K. J. Phys. Chem. Solids 2004, 6.5, 17-23.
  • 48
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    • Paulsen, H.; Grunsteudel, H.; Meyer-Klaucke, W.; Gerdan, M.; Grunsteudel, H. F.; Chumakov, A. 1.; Ruffer. R.; Winkler, H.: Toftlund, H.; Trautwein, A. X. Eur. Phys J. B 2001, 23, 463-472.
  • 52
    • 65349091036 scopus 로고    scopus 로고
    • The X-ray absorption near-edge structure (XANES) region is consistent with the interpretation that the electronic state is best described as a mixture of the HS and LS configurations in the crossover region near 350 K; see Supporting Information, Figure S28, for further details.
    • The X-ray absorption near-edge structure (XANES) region is consistent with the interpretation that the electronic state is best described as a mixture of the HS and LS configurations in the crossover region near 350 K; see Supporting Information, Figure S28, for further details.
  • 57
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    • The magnetic moment of the low-spin isomer can be calculated based on EPR studies using the following equation: μLS, 1/3(g ± 2, 2g, 2)(S)S, 1, 1/2
    • 1/2.
  • 63
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    • O'Connor, C. J. Prog. Inorg. Chem. 1982, 29, 203-285. (61) Riemscheider, R.; Reisch, A.; Horak, H. Monatsh. Chem. 1960, 91, 805-811.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.