Magnetic Ordering (Tc = 90 K) Observed for Layered [FeII(TCNE•-)(NCMe)2]+[FeIIICl4]- (TCNE = Tetracyanoethylene)
datasetposted on 13.12.2006 by Konstantin I. Pokhodnya, Michael Bonner, Jae-Hyuk Her, Peter W. Stephens, Joel S. Miller
Datasets usually provide raw data for analysis. This raw data often comes in spreadsheet form, but can be any collection of data, on which analysis can be performed.
[Fe(TCNE)(NCMe)2][FeCl4] is isolated from the reaction of TCNE and FeCl2(NCMe)2 and orders as a ferrimagnet below 90 K and is the initial member of a new class of magnets. It is the first metal−TCNE magnet with direct bonding between metal ion and [TCNE]•- whose structure has been determined, and it possesses a novel planar μ4-[TCNE]•- spin coupling unit bonded to four FeII's, with an axial pair of MeCNs. The [FeIIICl4]- anion occupies sites between the [FeII(TCNE•-)(NCMe)2]+ layers. [Fe(TCNE)(NCMe)2][FeCl4] has a coercive field of 1730 Oe and a remnant magnetization of 7500 emuK/mol at 50 K.