Herein, a cocrystal, incorporating mixed valence manganese ions, namely, [Mn^III]·[Mn^IIMn^III] formulated as [{Mn^III(Vaan)₂}·{Mn^IIMn^III(Vaan)₂(H₂O)₃}·14H₂O] (1) and a Mn^IIINa^I compound {Mn^IIINa^I(Vaan)₂(H₂O)₂}·H₂O] (2), are synthesized utilizing Mn^II precursor salts and a rarely used ligand, 2-[(2-hydroxy-3-methoxy-benzylidene)-amino]-benzoic acid (H₂Vaan). Structure analyses illustrate that 1 contains a cationic dinuclear unit (Mn^IIMn^III) and an anionic mononuclear unit Mn^III to generate the cocrystal, whereas a different recipe produces compound 2. Detailed descriptions of the prevailing supramolecular interactions within the systems have been provided. Interestingly, as far our knowledge goes, 1 is the first example of a cocrystal involving a mixed valence Mn^II/Mn^III species. Notably, dc and ac susceptibility measurements indicate the existence of slow relaxation of magnetization in both complexes. Furthermore, we have analyzed the nature of the magnetic interactions present using density functional theory based on the CASSCF-NEVPT2 methodology

中文翻译：

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价[Mn ^III ]·[Mn ^II Mn ^III ]共晶体和Mn ^III Na ^I配合物的迷人结构：慢磁弛豫和理论研究

此处，共晶是掺入混合价态的锰离子，即[Mn ^III ]·[Mn ^II Mn ^III ]配制成[{Mn ^III（Vaan）₂ }·{Mn ^II Mn ^III（Vaan）₂（H ₂ O）使用Mn ^II合成₃ }·14H ₂ O]（1）和Mn ^III Na ^I化合物{Mn ^III Na ^I（Vaan）₂（H ₂ O）₂ }·H ₂ O]（2）。前体盐和很少使用的配体2-[（（2-羟基-3-甲氧基-亚苄基）-氨基]-苯甲酸（H ₂ Vaan）。结构分析表明1包含一个阳离子双核单元（Mn ^II Mn ^III）和一个阴离子单核单元Mn ^III以产生共晶，而另一种配方则生产化合物2。已经提供了系统内主要的超分子相互作用的详细描述。有趣的是，据我们所知，1是涉及混合价Mn ^II / Mn ^III的共晶体的第一个例子。种类。值得注意的是，直流和交流磁化率测量表明两种复合物中均存在磁化缓慢弛豫的现象。此外，我们使用基于CASSCF-NEVPT2方法的密度泛函理论分析了目前存在的磁相互作用的性质。