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首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >One-dimensional coordination polymers from hexanuclear manganese carboxylate clusters featuring a {Mn_(II)_4Mn _(III)_2(μ_4-O)_2} core and spacer linkers
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One-dimensional coordination polymers from hexanuclear manganese carboxylate clusters featuring a {Mn_(II)_4Mn _(III)_2(μ_4-O)_2} core and spacer linkers

机译：来自具有{Mn_（II）_4Mn _（III）_2（μ_4-O）_2}核和间隔子连接基的六核羧酸锰簇的一维配位聚合物

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The bridging of hexanuclear mixed-valent carboxylate coordination clusters of the type [Mn_6O_2(O_2CR)_(10)] (R = CMe_3; CHMe_2) featuring a {Mn~(II)_4Mn~(III)_2(μ_4-O)_2} core by geometrically rigid as well as flexible spacer ligands such as pyrazine (pyz), nicotinamide (na), or 1,2-bis(4-pyridyl)ethane (bpe) results exclusively in one-dimensional (1D) coordination polymers. The formation of {[Mn _6O_2(O_2CCMe_3)_(10)(Me _3CCO_2H)(EtOH)(na)] EtOH H_2O}_n (1), {[Mn_6O_2(O_2CCHMe_2) _(10)(pyz)_3] H_2O}_n (2), and {[Mn _6O_2(O_2CCHMe_2)_(10)(Me _2CHCO_2H)(EtOH)(bpe)] Me_2CHCO_2H} _n (3) illustrates a surprising preference of the interlinked {Mn _6} units toward 1D coordination chains. In the solid-state, the observed chain propagation axes are either colinear (1 and 3) or perpendicular (2), whereby crystal packing is further influenced by solvent molecules. Magnetic properties of these network compounds can be rationalized based on that the magnetism of discrete [Mn_6O_2(O_2CR) _(10)]-type coordination clusters with all-antiferromagnetic intramolecular exchange and weak antiferromagnetic intercluster coupling in 1, 2, and 3 follows the expected exchange coupling strength of the employed spacer linkers.
机译：[Mn_6O_2（O_2CR）_（10）]（R = CMe_3; CHMe_2）类型的六核混合价羧酸盐配位簇的桥联，其特征为{Mn〜（II）_4Mn〜（III）_2（μ_4-O）_2 }通过几何上刚性的以及灵活的间隔基配体（例如吡嗪（pyz），烟酰胺（na）或1,2-双（4-吡啶基）乙烷（bpe））形成核，仅产生一维（1D）配位聚合物。 {[Mn _6O_2（O_2CCMe_3）_（10）（Me _3CCO_2H）（EtOH）（na）] EtOH H_2O} _n（1），{[Mn_6O_2（O_2CCHMe_2）_（10）（pyz）_3] H_2O}的形成_n（2）和{[Mn _6O_2（O_2CCHMe_2）_（10）（Me _2CHCO_2H）（EtOH）（bpe）] Me_2CHCO_2H} _n（3）说明了互连的{Mn _6}单元对1D配位链的偏爱。在固态状态下，观察到的链传播轴是共线的（1和3）或垂直的（2），因此晶体堆积进一步受到溶剂分子的影响。这些网络化合物的磁学性质可以根据以下因素进行合理化：1、2、3中具有全反磁性分子内交换和弱反铁磁性簇间耦合的离散[Mn_6O_2（O_2CR）_（10）]型配位簇的磁性遵循所用间隔基接头的预期交换偶联强度。

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