Next Article in Journal / Special Issue
Equivalence of Electron-Vibration Interaction and Charge-Induced Force Variations: A New O(1) Approach to an Old Problem
Previous Article in Journal
Synthesis and Crystal Structures of the Quaternary Zintl Phases RbNa8Ga3Pn6 (Pn = P, As) and Na10NbGaAs6
Previous Article in Special Issue
A New BEDT-TTF-Based Organic Charge Transfer Salt with a New Anionic Strong Acceptor, N,N'-Disulfo-1,4-benzoquinonediimine
Crystals 2012, 2(2), 224-235; doi:10.3390/cryst2020224
Article

Properties of Mn2+ and Π-Electron Spin Systems Probed by 1H and 13C NMR in the Organic Conductor κ-(BETS)2Mn[N(CN)2]3

1,* , 2
, 2
, 2
, 1
, 1
, 3
 and 3
Received: 7 March 2012; in revised form: 30 March 2012 / Accepted: 31 March 2012 / Published: 12 April 2012
(This article belongs to the Special Issue Molecular Conductors)
View Full-Text   |   Download PDF [942 KB, updated 13 April 2012; original version uploaded 12 April 2012]   |   Browse Figures
Abstract: Properties of the spin systems of the localized 3d Mn2+ ions and the conduction π electrons in quasi-two-dimensional organic conductor κ-(BETS)2Mn[N(CN)2]3 were accessed using 1H and 13C NMR in order to find their relation to the metal-insulator transition which occurs at ∼23 K. The transition of the system into the insulating state is shown to be followed by localization of the π spins into a long-range ordered staggered structure of AF type. In contrast, the 3d Mn2+ electron spin moments form a disordered tilted structure, which may signify their trend to AF order, frustrated geometrically by the triangular arrangement of Mn in the anion layer. This result suggests that the MI transition in κ-(BETS)2Mn[N(CN)2]3 is not the consequence of the interactions within the Mn2+ spins but due to the interactions within the π-electron system itself. Vice versa, it is more likelythat the disordered tilted structure of the Mn2+ spins is induced by the ordered π-spins via the π-d interaction.
Keywords: organic metals; pi-d interactions; spin order; antiferromagnetism; metal-insulator transition; NMR organic metals; pi-d interactions; spin order; antiferromagnetism; metal-insulator transition; NMR
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Vyaselev, O.M.; Kato, R.; Yamamoto, H.M.; Kobayashi, M.; Zorina, L.V.; Simonov, S.V.; Kushch, N.D.; Yagubskii, E.B. Properties of Mn2+ and Π-Electron Spin Systems Probed by 1H and 13C NMR in the Organic Conductor κ-(BETS)2Mn[N(CN)2]3. Crystals 2012, 2, 224-235.

AMA Style

Vyaselev OM, Kato R, Yamamoto HM, Kobayashi M, Zorina LV, Simonov SV, Kushch ND, Yagubskii EB. Properties of Mn2+ and Π-Electron Spin Systems Probed by 1H and 13C NMR in the Organic Conductor κ-(BETS)2Mn[N(CN)2]3. Crystals. 2012; 2(2):224-235.

Chicago/Turabian Style

Vyaselev, Oleg M.; Kato, Reizo; Yamamoto, Hiroshi M.; Kobayashi, Megumi; Zorina, Leokadiya V.; Simonov, Sergey V.; Kushch, Nataliya D.; Yagubskii, Eduard B. 2012. "Properties of Mn2+ and Π-Electron Spin Systems Probed by 1H and 13C NMR in the Organic Conductor κ-(BETS)2Mn[N(CN)2]3." Crystals 2, no. 2: 224-235.


Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert