MOSSBAUER STUDY OF A NOVEL BINUCLEAR FE(II/III) DELOCALIZED-VALENCE COMPOUND

被引：11

作者：

DING, XQ ^{[1
]}

BOMINAAR, EL ^{[1
]}

BILL, E ^{[1
]}

WINKLER, H ^{[1
]}

TRAUTWEIN, AX ^{[1
]}

DRUEKE, S ^{[1
]}

CHAUDHURI, PH ^{[1
]}

WIEGHARDT, K ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM, LEHRSTUHL ANORG CHEM 1, W-4630 BOCHUM, GERMANY

来源：

HYPERFINE INTERACTIONS | 1990年 / 53卷 / 1-4期

关键词：

D O I：

10.1007/BF02101058

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

In this paper, we briefly summarize the main conclusions of the Mössbauer analysis of [L2Fe2(μ-OH)3] (ClO4)2·2CH3OH·2H2O with L=N,N',N"-trimethyl-1,4,7-triazacyclononane, a novel dimeric iron compound, which possesses a central exchange-coupled delocalized-valence Fe(II/III) unit. The complete delocalization of the excess electron in the dimeric iron center is concluded from the indistinguishability of the two iron sites in Mössbauer spectroscopy. The magnetic Mössbauer spectra imply a system spin St=9/2 for the dimer in its ground state. The values for hyperfine and spin-Hamiltonian parameters, obtained from simulations of the Mössbauer spectra, are δ=0.74 mms-1, ΔEQ=-2.14 mms-1, A⊥=-10.6 T, A∥=-13.5 T and D=1.8 cm-1. The system spin St=9/2 is interpreted to be a consequence of double-exchange coupling. © 1990 J.C. Baltzer AG, Scientific Publishing Company.

引用

页码：311 / 315

页数：5

共 10 条

[1] CONSIDERATIONS ON DOUBLE EXCHANGE
ANDERSON, PW
HASEGAWA, H
[J]. PHYSICAL REVIEW, 1955, 100 (02): : 675 - 681
[2] DING XQ, IN PRESS J CHEM PHYS
[3] Drueke S., 1989, J CHEM SOC CHEM COMM, V59
[4] Greenwood NN, 1971, MOSSBAUER SPECTROSCO
[5] Gutlich P., 1978, MOSSBAUER SPECTROSCO
[6] FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE
JONKER, GH
VANSANTEN, JH
[J]. PHYSICA, 1950, 16 (03): : 337 - 349
[7] ELECTRONIC-STRUCTURE, MAGNETIC-PROPERTIES, ELECTRON-SPIN-RESONANCE, AND OPTICAL-SPECTRA FOR 2-FE FERREDOXIN MODELS BY LCAO-X-ALPHA VALENCE BOND THEORY
NOODLEMAN, L
BAERENDS, EJ
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (08) : 2316 - 2327
[8] ELECTRICAL CONDUCTIVITY OF FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE
VANSANTEN, JH
JONKER, GH
[J]. PHYSICA, 1950, 16 (7-8): : 599 - 600
[9] Wong K. Y., 1981, PROG INORG CHEM, V28, P369
[10] INTERACTION BETWEEN THE D-SHELLS IN THE TRANSITION METALS .2. FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE
ZENER, C
[J]. PHYSICAL REVIEW, 1951, 82 (03): : 403 - 405

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