Spin crossover in phosphorus- and arsenic-bridged cyclopentadienyl-manganese(II) dimers

Spin crossover in phosphorus- and arsenic-bridged cyclopentadienyl-manganese(II) dimers

Manganocene reacts with LiE(SiMe(3))(2) (E = P or As) to give [(η(5)-Cp)Mn{μ-E(SiMe(3))(2)}](2), where E = P (1) or As (2). The temperature dependence of the magnetic susceptibility in 1 and 2 is due to antiferromagnetic exchange and to spin-crossover (SCO). Compound 2 shows two-step SCO with hyster...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2012-01, Vol.48 (65), p.8087-8089
Hauptverfasser: Scheuermayer, Sabine, Tuna, Floriana, Bodensteiner, Michael, Scheer, Manfred, Layfield, Richard A
Format: Artikel
Sprache:eng
Schlagworte:
Antiferromagnetism
Arsenic
Crossovers
Dimers
Hysteresis
Magnetic permeability
Magnetic susceptibility
Temperature dependence
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Zusammenfassung:Manganocene reacts with LiE(SiMe(3))(2) (E = P or As) to give [(η(5)-Cp)Mn{μ-E(SiMe(3))(2)}](2), where E = P (1) or As (2). The temperature dependence of the magnetic susceptibility in 1 and 2 is due to antiferromagnetic exchange and to spin-crossover (SCO). Compound 2 shows two-step SCO with hysteresis, involving high-spin (S = 5/2) and intermediate-spin S = (3/2) Mn(II).
ISSN:1359-7345
1364-548X
DOI:10.1039/c2cc32893c