Pilichos Evangelos, Font-Bardia Mercè, Escuer Albert, Mayans Júlia
Departament de Química Inorgànica i Orgànica, Secció Inorgànica, Martí i Franquès 1-11, Barcelona-08028, Spain.
Departament de Mineralogia, Cristal·lografia i Dipòsits Minerals, Universitat de Barcelona, Martí Franqués s/n, 08028 Barcelona, Spain.
Dalton Trans. 2022 Nov 29;51(46):17653-17663. doi: 10.1039/d2dt02807g.
A family of copper(II)/manganese(II) new clusters with the formulas [CuNa(L2)(MeOH)(ClO)] (1), CuII2Mn(,-L3)(MeOH) (2SS), {CuMn(L1)(HO)(MeOH)}{Cu(L1)} (3), (μ-N){CuMn(L2)(HO)}{Cu(L2)} (4) and (μ-N){CuMn(L1)(N)}{CuNa(L1)(MeOH)} (5) with L1 = ,'-ethylene-bis(3-methoxysalicylaldiimine), L2 = ,'-ethylene-bis(3-ethoxysalicylaldiimine) and L3 = ,'-cyclohexane-bis(3-ethoxysalicylaldiimine), has been synthesized, and structurally and magnetically characterized. Reduced magnetization studies demonstrate that the magnetic anisotropy of the systems is very small. However, dynamic magnetic studies and ultra-low-frequency Raman spectroscopy confirm the slow relaxation of these systems despite their quasi-isotropic nature, enlarging the range of non-anisotropic slow relaxing molecules.
已合成了一族通式为[CuNa(L2)(MeOH)(ClO)] (1)、CuII2Mn(μ-L3)(MeOH) (2SS)、{CuMn(L1)(H2O)(MeOH)}{Cu(L1)} (3)、(μ-N){CuMn(L2)(H2O)}{Cu(L2)} (4) 和 (μ-N){CuMn(L1)(N)}{CuNa(L1)(MeOH)} (5) 的铜(II)/锰(II)新型簇合物，其中L1 = μ'-亚乙基-双(3-甲氧基水杨醛二亚胺)，L2 = μ'-亚乙基-双(3-乙氧基水杨醛二亚胺)，L3 = μ'-环己烷-双(3-乙氧基水杨醛二亚胺)，并对其进行了结构和磁性表征。磁化强度降低研究表明，该体系的磁各向异性非常小。然而，动态磁性研究和超低频拉曼光谱证实，尽管这些体系具有准各向同性性质，但仍存在缓慢弛豫现象，从而扩大了非各向异性缓慢弛豫分子的范围。
