Structure, magnetic properties and thermal sublimation of fluorinated Fe 4 Single-Molecule Magnets
作者:Luca Rigamonti、Marco Piccioli、Andrea Nava、Luigi Malavolti、Brunetto Cortigiani、Roberta Sessoli、Andrea Cornia
DOI:10.1016/j.poly.2017.02.036
日期:2017.5
Abstract Fluorinated tetrairon(III) Single-Molecule Magnets (SMMs) [Fe4(L1)2(dpmF6)6] (1dpmF6), [Fe4(L2)2(dpmF6)6] (2dpmF6), and [Fe4(L2)2(pta)6] (2pta) were assembled combining the tripodal ligands H3L1 = 2-hydroxymethyl-2-phenylpropane-1,3-diol and H3L2 = S-5-hydroxy-4,4-bis(hydroxymethyl)pentyl ethanethioate with fluorinated β-diketones analogues of dipivaloylmethane (Hdpm), namely 1,1,1-trifluoro-2
摘要氟化四铁(III)单分子磁体(SMM)[Fe4(L1)2(dpmF6)6](1dpmF6),[Fe4(L2)2(dpmF6)6](2dpmF6)和[Fe4(L2)2将三脚架配体H3L1 = 2-羟甲基-2-苯基丙烷-1,3-二醇和H3L2 = S-5-羟基-4,4-双(羟甲基)戊基乙硫醇酸酯结合起来,组装成[pta] 6](2pta)二戊酰基甲烷(Hdpm)的β-二酮类似物,即1,1,1-三氟-2,6,6-三甲基-2-(三氟甲基)庚烷-3,5-二酮(HdpmF6)和新戊酰基三氟丙酮(Hpta)。为了研究氟化度对可加工性的影响,设计了新化合物以及[Fe4(L1)2(dpm)6](1dpm)和[Fe4(L1)2(pta)6](1pta)。热升华。三脚架配体上的两个不同的官能团,即H3L1中的C6H5和H3L2中的(CH2)3SAc,分别适合于促进表面上的物理吸附和化学吸附。直流磁数据对于F