Co–Gd phosphonate complexes as magnetic refrigerants†
Abstract
Three 3d–4f phosphonate complexes, [CoII8GdIII8(μ3-OH)4(NO3)4(O3PtBu)8(O2CtBu)16], [CoII8GdIII4(O3PtBu)6(O2CtBu)16] and [CoII4GdIII6(O3PCH2Ph)6(O2CtBu)14(MeCN)2], have been synthesized and have structures that can be related to molecular grids. Magnetic studies show they have promise as low temperature magnetic refrigerants.
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