| 1569272-32-7

• CAS: 1569272-32-7
• 化学式: C₄₄H₄₀Co₄N₈O₈
• 分子量: 1044.82
• InChiKey: IHIMPSVXTCBAJK-UHFFFAOYSA-J

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  生成
  参考文献：
  名称：

  Inducing Single Molecule Magnetic Behavior in a [Co₄O₄] Cubane via a Pronounced Solvatomagnetic Effect

  摘要：

  The pyrazole-based tridentate diol ligand 2-(1-(2-hydroxyethyl)-1H-pyrazol-3-yl)phenol (H2L) forms a cubane-type complex [Co4L4(MeOH)(4)] (1) that features a {Co4O4} core and four exogenous MeOH ligands. Electrospray ionization mass spectrometry suggests that the Me0H ligands are easily lost, and thermogravimetric analysis evinces a thermally induced release of those methanol molecules from solid material in the temperature range from 380 to 440 K. Desolvation was found to give rise to a pronounced solvatomagnetic effect that causes a switching of the spin ground state of the {Co4O4} core from diamagnetic to magnetic. Furthermore, the desolvated "naked" [Co4L4] cube (1*) shows slow relaxation of the magnetization and butterfly-like magnetic hysteresis at 2 K. A comparatively high relaxation barrier U-eff/k(B) = 64.4 K and a characteristic relaxation time tau(0) = 3.8 x 10(-9) s for 1* have been derived from an Arrhenius plot. These findings thus demonstrate that the emergence of interesting magnetic properties in molecule-based materials can be triggered via a solvatomagnetic process, even for materials that in their solvated form have a diamagnetic (S-T = 0) ground state.

  DOI：

  10.1021/ic4027656