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RESEARCH PRODUCT

Pressure Effect Studies on the Spin‐Transition Behavior of a Dinuclear Iron(II) Compound

Sally BrookerAshis BhattacharjeeAshis BhattacharjeeMadhusudan RoyPhilipp GütlichJonathan A. KitchenVadim Ksenofontov

subject

Inorganic ChemistryCrystallographyThermal hysteresisNuclear magnetic resonanceChemistrySpin crossoverSpin transitionCalorimetryAmbient pressure

description

Magnetic studies into the effect of different hydrostatic pressures between ambient and 1.03 GPa on the high-spin (HS) i low-spin (LS) transition behavior of the dinuclear iron(II) compound [Fe II 2(PMAT)2](BF4)4·DMF (1, PMAT = 4-amino3,5-bis{[(2-pyridylmethyl)amino]methyl}-4H-1,2,4-triazole, DMF = N,N-dimethylformamide) have been carried out at 2– 300 K. Under ambient pressure, the sample studied exhibits a [HS–HS] to [HS–LS] half spin transition (ST) at T½ = 208 K without any thermal hysteresis. Increasing the pressure above 0.2 GPa causes an increase (initially rapid but above 0.5 GPa more gradual) of T½ as well as a matching reduction in the residual high-spin fraction at room temperature. This paper probes in detail how the increased pressure favors the

yearjournalcountryeditionlanguage
2013-01-23European Journal of Inorganic Chemistry
https://doi.org/10.1002/ejic.201201522