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发明授权
CN106866745B 一种磁性晶体及其制备方法 失效 - 权利终止

一种磁性晶体及其制备方法
摘要：
本发明公开了一种磁性晶体及其制备方法。所述的磁性晶体的化学式为Fe(MeLN4)0.5(2MeLN4)0.5(NCBH3)2，MeLN4为N‑甲基‑N,N’‑二(吡啶‑2‑甲基)乙二胺，2MeLN4为N,N’‑二甲基‑N,N’‑二(吡啶‑2‑甲基)乙二胺，通过以下步骤制得：将二吡啶甲醛与乙二胺反应，经还原得到中间产物N,N’‑二(吡啶‑2‑甲基)乙二胺；中间产物与甲醛反应，成环、开环得到产物MeLN4；2‑氯吡啶盐酸盐与N,N’‑二甲基乙二胺反应制备得产物2MeLN4；按比例将混合配体MeLN4和2MeLN4，以Fe(ClO4)2中的Fe2+为中心，与NaNCBH3共同自组装得到配合物Fe(MeLN4)0.5(2MeLN4)0.5(NCBH3)2。本发明的磁性晶体随温度改变能实现其中心Fe2+高低自旋态的互变，在低温温度计、分子开关以及存储材料方面具有良好的应用前景。
摘要（英）：

The invention discloses a magnetic crystal and a preparation method thereof. The chemical formula of the magnetic crystal is Fe(LN4)0.5(<2Me>LN4)0.5(NCBH3)2; wherein LN4 is N-methyl-N,N'-bis(pyridine-2-methyl) ethidene diamine; <2Me>LN4 is N,N'-dimethyl-N,N'-bis(pyridine-2-methyl) ethidene diamine. The magnetic crystal is prepared from the following steps: carrying out reaction on dipyridine formaldehyde and ethidene diamine, and carrying out reduction to obtain an intermediate product N,N'-bis(pyridine-2-methyl) ethidene diamine; carrying out reaction on the intermediate product and formaldehyde, and carrying out ring formation and ring opening to obtain a product LN4; carrying out reaction on 2-chloropyridine hydrochloride and N,N'-dimethyl-ethidene diamine to obtain a product <2Me>LN4; self-assembling mixed ligands LN4 and <2Me>LN4 with NaNCBH3 according to a proportion by taking Fe<2+> in Fe(ClO4)2 as a center, thus obtaining the compound Fe(LN4)0.5(<2Me>LN4)0.5(NCBH3)2. The magnetic crystal changes along with the temperature, so that inter change between a high spin state and a low spin state of the center Fe<2+> can be realized; the magnetic crystal has a good application prospect in the aspects of a low temperature thermometer, a molecular switch and a storage material.

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