TY - JOUR
T1 - Hybridized molecular materials based on [MnIII2] single molecule magnets with molecular conductors [Ni(dmit)2] n-
AU - Kubo, Kazuya
AU - Miyasaka, Hitoshi
AU - Yamashita, Masahiro
N1 - Funding Information:
We thank Dr. Reizo Kato (RIKEN, Institute of Physical and Chemical Research in Japan) for the overlap integral calculation. This work was financially supported by Young Scientist Encouragement Fund 2009 from Faculty of Science, Tohoku University (Grant no. 51219-3-1).
PY - 2010/6/1
Y1 - 2010/6/1
N2 - A new hybridized molecular crystal [Mn(5-MeOsaltmen)(acetone)] 2[Ni(dmit)2]6 (5-MeOsaltmen2- = N,N'-(1,1,2,2-tetramethylethylene)bis(5-methoxysalicylideneiminate), dmit 2-=2-thioxo-1,3-dithiole-4,5-dithiolate) based on [Mn] 2+2 dimer as a single molecule magnet (SMM) and the dithiolene complex [Ni(dmit)2] as a conducting part was prepared by electrochemical crystallization of (Bu4N)[Ni(dmit)2] in acetone with [Mn(5-MeOsalmen)(H2O)](PF6). An segregating stacking arrangement of the SMM layers and conducting layers is formed, where the magnetic and conducting layers involve one crystal-lographically independent [Mn]+ monomer and three [Ni(dmit)2] molecules. The SMM units were formed by dimerization of the Mn complex. Ferromagnetic exchange parameter JF in the dimeric core (1.85cm-1) can be estimated by Mn-O distance (2.298Å) in the out-of-plane dimeric core. For conducting part, overlap integral calculation between [Ni(dmit)2] acceptors in the salt suggests the existence of quasi one-dimensional interactions among the acceptors. The compound exhibits semiconducting behavior from room temperature to 50K (ρr.t=0.3ωcm, Ea=0.08eV in a crystal) without structural phase transition at ambient pressure. Then, this is a new type of conducting SMM.
AB - A new hybridized molecular crystal [Mn(5-MeOsaltmen)(acetone)] 2[Ni(dmit)2]6 (5-MeOsaltmen2- = N,N'-(1,1,2,2-tetramethylethylene)bis(5-methoxysalicylideneiminate), dmit 2-=2-thioxo-1,3-dithiole-4,5-dithiolate) based on [Mn] 2+2 dimer as a single molecule magnet (SMM) and the dithiolene complex [Ni(dmit)2] as a conducting part was prepared by electrochemical crystallization of (Bu4N)[Ni(dmit)2] in acetone with [Mn(5-MeOsalmen)(H2O)](PF6). An segregating stacking arrangement of the SMM layers and conducting layers is formed, where the magnetic and conducting layers involve one crystal-lographically independent [Mn]+ monomer and three [Ni(dmit)2] molecules. The SMM units were formed by dimerization of the Mn complex. Ferromagnetic exchange parameter JF in the dimeric core (1.85cm-1) can be estimated by Mn-O distance (2.298Å) in the out-of-plane dimeric core. For conducting part, overlap integral calculation between [Ni(dmit)2] acceptors in the salt suggests the existence of quasi one-dimensional interactions among the acceptors. The compound exhibits semiconducting behavior from room temperature to 50K (ρr.t=0.3ωcm, Ea=0.08eV in a crystal) without structural phase transition at ambient pressure. Then, this is a new type of conducting SMM.
KW - Hybridized material
KW - Manganese(III) salen-type complex
KW - Molecular conductor
KW - Nickel dithiolene complex
KW - Single molecule magnet
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U2 - 10.1016/j.physb.2009.12.014
DO - 10.1016/j.physb.2009.12.014
M3 - Article
AN - SCOPUS:79951879045
VL - 405
SP - S313-S316
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 11 SUPPL.
ER -