6533b7d0fe1ef96bd125a193

RESEARCH PRODUCT

Interplay of Antiferromagnetic Coupling and Spin Crossover in Dinuclear Iron(II) Complexes

Philipp GütlichAna B. GasparS. ReimanJosé Antonio RealHartmut SpieringVadim Ksenofontov

subject

CrystallographySpin statesCondensed matter physicsChemistrySpin crossoverSpin transitionMoleculeInductive couplingLIESSTAntiferromagnetic couplingMagnetic exchange

description

This article reports on the study of the interplay between magnetic coupling and spin transition in 2,2′-bipyrimidine (bpym)-bridged iron(II) dinuclear compounds. Coexistence of both phenomena has been observed in [Fe(bpym)(NCS)2]2bpym, [Fe(bpym)(NCSe)2]2bpym and [Fe(bt)(NCS)2]2bpym (bpym = 2,2′-bipyrimidine, bt = 2,2′-bithiazoline) by the action of external physical factors namely pressure or electromagnetic radiation. Competition between magnetic exchange and spin crossover has been studied in [Fe(bpym)(NCS)2]2bpym at 6.3 kbar. LIESST experiments carried out in [Fe(bpym)(NCSe)2]2bpym and [Fe(bt)(NCS)2]2bpym at 4.2 K have shown that is possible to achieve dinuclear molecules with different spin states in this class of compounds.

yearjournalcountryeditionlanguage
2003-01-01
https://doi.org/10.1007/978-94-010-0045-1_30