The reaction of a compartmental ligand N,N′‐bis(3‐methoxysalicylidene)‐1,3‐diamino‐2‐propanol (LH₃) with Cu^II and Ln^III salts under solvothermal conditions afforded two‐dimensional coordination polymers, [{Cu₅Gd₂(L)₂(µ₃‐OH)₄(NO₃)₄(µ‐OH₂)₂}(NO₃)₂]_∞ (1) and [{Cu₅Dy₂(L)₂(µ₃‐OH)₄(NO₃)₄(MeOH)₂}(NO₃)₂]_∞ (2). A detailed study of the magnetic properties of the two coordination polymers reveals that the [Cu₅Dy₂] analogue shows single‐molecule magnet (SMM) behavior with an energy barrier of about 12 K with τ₀ = 10^–6 s under zero‐dc field, while the [Cu₅Gd₂] analogue shows magnetocaloric effect with a –ΔS_m value of 17.55 J kg^–1 K^–1 at T = 2 K (ΔB = 5 T). Interestingly, the magnetic and SMM properties of the previously reported molecular and one‐dimensional analogues containing the [Cu₅Ln₂] motif are preserved even in the two‐dimensional coordination networks.

中文翻译：

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含杂金属[Cu5Ln2]（Ln = GdIII和DyIII）基元的二维聚合物的单分子磁体和磁热性质

在溶剂热条件下，隔室配体N，N'-双（3-甲氧基水杨基）-1,3-二氨基-2-丙醇（LH ₃）与Cu ^II和Ln ^III盐的反应得到了二维配位聚合物，[{ Cu ₅ Gd ₂（L）₂（µ ₃ -OH）₄（NO ₃）₄（µ‐OH ₂）₂ }（NO ₃）₂ ] _∞（1）和[{Cu ₅ Dy ₂（L）₂（ µ ₃ -OH）₄（NO ₃）₄（MeOH）₂ }（NO ₃）₂ ] _∞（2）。两个配位聚合物的磁特性的详细研究表明，[铜₅的Dy ₂ ]示出了模拟的单分子磁体（SMM）具有约12 K的能量势垒行为τ ₀ = 10 ^-6下零š直流磁场，而[Cu ₅ Gd ₂ ]类似物在T时的–Δ S _m值为17.55 J kg ^–1  K ^–1时表现出磁热效应= 2 K（Δ乙= 5 T）。有趣的是，即使在二维配位网络中，仍保留了先前报道的含有[Cu ₅ Ln ₂ ]基序的分子和一维类似物的磁性和SMM特性。