Metamagnetic properties of one-dimensional decamethylferrocenium 7,7,8,8-tetracyano-p-quinodimethanide (1:1):[Fe(.eta.5-C5Me5)2]+.cntdot.(TCNQ)-.cntdot.

Candela, G. A.; Swartzendruber, L. J.; Miller, Joel S.; Rice, M. J.

doi:10.1021/ja00504a057

Cited by 129 publications

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“…Hexacynometallates [ 15 ] were the fi rst class of organometallics showing magnetic order. After these compounds, numerous organometallic magnets have been reported, in which Fe, Mn, Ni, Cr, and V were mainly employed as the metallic parts, while CN − , [ 16 ] Cl − , [ 17 ] TTF − , [ 17 ] TCNQ − , [ 18 ] TCNE − , [ 19 ] porphyrin, [ 20 ] etc. were the coordinating constituents.…”

Section: Doi: 101002/adma201001288mentioning

confidence: 99%

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High‐Temperature Ferromagnetism of a Discotic Liquid Crystal Dilutely Intercalated with Iron(III) Phthalocyanine

et al. 2010

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Room-temperature ferromagnetism of an organic discotic liquid crystalline compound (DLC) is achieved by intercalation at low levels with paramagnetic iron(III) phthalocyanine (see figure). These ferromagnetic DLCs are very similar to the so-called dilute magnetic semiconductors of inorganic nature. It is expected that this novel approach will open up a new way of preparing the high-temperature organic ferromagnetic compounds needed for molecular spintronics.

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Section: Doi: 101002/adma201001288mentioning

confidence: 99%

“…The saturation values of the magnetization range from 0.2 to 0.5 μ B, which correspond to (12)(13)(14)(15)(16)(17)(18)(19)(20) μ B /Fe(III)Pc. These are fairly large in magnitude considering that the highest spin state of Fe(III) is at best S = 5/2, leading to a saturation value of the magnetization of 5 μ B .…”

Section: Doi: 101002/adma201001288mentioning

confidence: 99%

High‐Temperature Ferromagnetism of a Discotic Liquid Crystal Dilutely Intercalated with Iron(III) Phthalocyanine

et al. 2010

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“…( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003) [Fe(C 5 Me 5 ) 2 ][TCNE], with alternating ferrocenium cations and TCNE Ϫ anions. [6] The derivative with TCNQ (7,7,8,8-tetracyanoquinodimethane), [Fe(C 5 Me 5 ) 2 ][TCNQ], exhibits an equivalent structure, with alternating ions along the stack, and shows metamagnetic behavior.…”

Section: ][Tcne]mentioning

confidence: 99%

Radical Ion Salts Obtained from Substituted Ferrocene Cations and the Organic Acceptor TCNQ − Synthesis, Structure and Physical Properties

et al. 2003

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The compounds [Fe(C5H5)(C5H4CH2NMe3)][TCNQ] (1), [Fe(C5H5)(C5H4CH2NMe3)][TCNQ]2.MeCN (2) and [Fe(C5H5)(C5H4CH=CH‐p‐C5H4NMe)][TCNQ] (3) have been obtained from reaction of the corresponding ferrocene iodide and TCNQ or LiTCNQ. Their crystal structures have been determined, showing that 1 and 3 have only mononegative TCNQ radicals forming one‐dimensional stacks. In compound 3 the pyridine substituent also overlaps with the stacked TCNQ. The formation reaction of 2 implies the reduction of neutral TCNQ by the iodide anion; in this reaction the reduction is partial and the formal charge of every TCNQ is approximately 0.5 e− with some degree of electron delocalization. The TCNQs also overlap to form a one‐dimensional stack in the solid. The three compounds are diamagnetic, indicating a strong antiferromagnetic coupling between the TCNQ spins. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

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“…¥ exhibited metamagnetic behavior [ 1]. Using permethylated metallocenium cations we have prepared a series of charge transfer complexes with a variety of radical anion acceptors in order to elucidate the critical structure-function relationships that might ultimately lead to the preparation of a molecular-based ferromagnet.…”

Section: Introductionmentioning

confidence: 99%

Magnetic molecular charge transfer complexes

et al. 1987

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The charge transfer complex [Fe (C5Me5) magnetization in zero applied field and is a bulk ferromagnet. These three compounds possess the same structural motif, namely, linear chains of alternating cationic donors and anionic acceptors. The high temperature magnetic susceptibility obeys the CurieWeiss expression with e = +30, -1.0, and -1.2 K, respectively, and the latter pair of complexes possess weak antiferromagnetic coupling. The ferromagnet exhibits zero field Zeeman split 57Fe Mossbauer spectra with an internal field of 425.6 kOe at 4.23 K. INTRODUCTIONWe have deliberately sought to prepare a molecular-based ground state bulk ferromagnet since our observation that 1-D 1:1 [Fe(C5Me5)2]+.[TCNQ] -. ¥ exhibited metamagnetic behavior [ 1]. Using permethylated metallocenium cations we have prepared a series of charge transfer complexes with a variety of radical anion acceptors in order to elucidate the critical structure-function relationships that might ultimately lead to the preparation of a molecular-based ferromagnet. With the specific goal of increasing the spin density we sought a smaller planar radical anion and selected S = 1/2

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Metamagnetic properties of one-dimensional decamethylferrocenium 7,7,8,8-tetracyano-p-quinodimethanide (1:1):[Fe(.eta.5-C5Me5)2]+.cntdot.(TCNQ)-.cntdot.

Cited by 129 publications

References 0 publications

High‐Temperature Ferromagnetism of a Discotic Liquid Crystal Dilutely Intercalated with Iron(III) Phthalocyanine

High‐Temperature Ferromagnetism of a Discotic Liquid Crystal Dilutely Intercalated with Iron(III) Phthalocyanine

Radical Ion Salts Obtained from Substituted Ferrocene Cations and the Organic Acceptor TCNQ − Synthesis, Structure and Physical Properties

Magnetic molecular charge transfer complexes

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