Synthesis of an ST = 7 [Mn3] Mixed-Valence Complex Based on 1,3-Propanediol Ligand Derivatives and Its One-Dimensional Assemblies

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• 作者：Jian Huang ; Gang Wu ; Jiaquan Bai ; Yuan Jiang ; Guanghua Li ; Shilun Qiu ; Rodolphe Cl茅rac
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：October 7, 2013
• 年：2013
• 卷：52
• 期：19
• 页码：11051-11059
• 全文大小：456K
• 年卷期：v.52,no.19(October 7, 2013)
• ISSN：1520-510X

文摘

Controlled organization of high-spin complexes and single-molecule magnets is a great challenge in molecular magnetism in order to study the effect of the intercomplex magnetic interactions on the intrinsic properties of a given magnetic object. In this work, a new S_T = 7 trinuclear mixed-valence Mn complex, [Mn^IIIMn^II₂(L_A)₂(Br)₄(CH₃OH)₆] 路Br路(CH₃OH)_1.5路(H₂O)_0.5 (1), is reported using a pyridinium-functionalized 1,3-propanediol ligand (H₂L_ABr = 1-(3-bromo-2,2-bis(hydroxymethyl)propyl)pyridinium bromide). Using azido anions as bridging ligands and different pyridinium-functionalized 1,3-propanediol ligands (H₂L_BBr = 1-(3-bromo-2,2-bis(hydroxymethyl)propyl)-4-picolinium bromide; H₂L_CBr = 1-(3-bromo-2,2-bis(hydroxymethyl)propyl)-3,5-lutidinium bromide), the linear [Mn^IIIMn^II₂L₂X₄]⁺ building block has been assembled into one-dimensional coordination networks: [Mn^IIIMn^II₂(L_A)₂(Br)₄(CH₃OH)₄(N₃)]路((C₂H₅)₂O)_1.25 (2鈭?/b>), [Mn^IIIMn^II₂(L_B)₂(Br)₄(C₂H₅OH)(CH₃OH)(H₂O)₂(N₃)]路(H₂O)_0.25 (3鈭?/b>), and [Mn^IIIMn^II₂(L_C)₂(Cl)_3.8(Br)_0.2(C₂H₅OH)₃(CH₃OH)(N₃)] (4鈭?/b>). The syntheses, characterization, crystal structures, and magnetic properties of these new [Mn₃]-based materials are reported.