Carboxylate free μ-oxo bridged ferric wheel with a record exchange coupling.
نویسندگان
چکیده
A novel oxo-bridged, carboxylate free 'ferric wheel' was isolated with the molecular formula [FeIII8(μ-O)4(L(2-))8] (1). Magnetic susceptibility measurements suggest that the Fe(III) ions are coupled antiferromagnetically and magnetic data modelling yields J1 = -26.4 cm(-1), J2 = -170 cm(-1) which are rationalized by DFT calculation. The exchange value for of -170 cm(-1) (Fe-O(oxo)-Fe) is the largest exchange value known compared to any homometallic or heterometallic wheel reported to date.
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عنوان ژورنال:
- Dalton transactions
دوره 44 43 شماره
صفحات -
تاریخ انتشار 2015