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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Structures of substituted pyridine N-oxide with manganese(II) acetate
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Structures of substituted pyridine N-oxide with manganese(II) acetate

机译:乙酸锰(II)取代吡啶N-氧化物的结构

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Manganese(II) acetate coordination polymers have been prepared with three derivatives of pyridine N-oxide. The compounds are catena-poly[manganese(II)-μ3-acetato-di-μ2-acetato-[aqua­manganese(II)]-μ2-acetato-μ-(pyridine N-oxide)-manganese(II)-μ3-acetato-μ2-acetato-μ-(pyridine N-oxide)-[aqua­manganese(II)]-di-μ2-acetato], [Mn4(CH3COO)8(C5H5NO)2(H2O)2]n, (I), catena-poly[[manganese(II)]-μ3-acetato-μ2-acetato-μ-(2-methyl­pyridine N-oxide)-[aqua­manganese(II)]-di-μ2-acetato-manganese(II)-di-μ2-acetato-μ3-acetato-[aqua­manganese(II)]-μ2-acetato-μ-(2-methyl­pyridine N-oxide)], [Mn4(CH3COO)8(C6H7NO)2(H2O)2]n, (II), and catena-poly[[manganese(II)-di-μ2-acetato-μ-(4-methyl­pyridine N-oxide)] monohydrate], {[Mn(CH3COO)2(C6H7NO)]·H2O}n, (III). Compounds (I) and (II) both have three unique Mn atoms; in both compounds two of them sit on a crystallographic inversion center while the third is on a general position. In compound (III), the single unique Mn atom sits on a general position. Pseudo-octa­hedral six-coordinate mangan­ese(II) centers are found in all compounds. All of the compounds form chains of Mn atoms bridged by acetate ions and the oxygen atom of the N-oxide in pyridine N-oxide (PNO), 2-methyl­pyridine N-oxide (2MePNO), or 4-methyl­pyridine N-oxide (4MePNO). Compound (I) and (II) both exhibit a bound water of solvation. In (I), the water hydrogen bonds to a nearby acetate whereas in (II) the water mol­ecule forms bridging hydrogen bonds between two neighboring acetates. In compound (III) a water mol­ecule of solvation is found in the lattice, not bound to the metal ion but hydrogen bonding to a bridging acetate.
机译:乙酸锰(II)配位聚合物已经用吡啶N-氧化物的三种衍生物制备。化合物为阳离子-聚[锰(II)-μ3-乙酰基-二-μ2-乙酰基-[水锰(II)]-μ2-乙酰基-μ-(吡啶N-氧化物)-锰(II)-μ3-乙酰基-μ2-乙酰基-μ-(吡啶N-氧化物)-[水锰(II)]-二μ2-乙酰基],[Mn4(CH3COO)8(C5H5NO)2(H2O)2] n,(I),阳离子-聚[[锰(II)]-μ3-乙酰基-μ2-乙酸基-μ-(2-甲基吡啶N-氧化物)-[水基锰(II)]-二-μ2-乙酸-锰(II)-二-μ2 -acetato-μ3-acetato-[[aquamanganese(II)]-μ2-acetato-μ-(2-methylpyridine N-oxide)],[Mn4(CH3COO)8(C6H7NO)2(H2O)2] n,(II) ,和链状多[[锰(II)-二-μ2-丙酮-μ-(4-甲基吡啶N-氧化物)]一水合物],{[Mn(CH3COO)2(C6H7NO)]·H2O} n,(III )。化合物(I)和(II)都具有三个独特的Mn原子;在这两种化合物中,它们中的两个都位于晶体学反转中心,而第三个位于一般位置。在化合物(III)中,单个独特的Mn原子位于一般位置。在所有化合物中都存在伪八面体六坐标锰(II)中心。所有化合物均形成由乙酸根离子桥接的Mn原子链和吡啶N-氧化物(PNO),2-甲基吡啶N-氧化物(2MePNO)或4-甲基吡啶N-氧化物(4MePNO)中N-氧化物的氧原子桥接的链)。化合物(I)和(II)均显示出结合的溶剂化水。在(I)中,水氢键结合至附近的乙酸盐,而在(II)中,水分子在两个相邻乙酸盐之间形成桥连氢键。在化合物(III)中,在晶格中发现了溶剂化的水分子,其不与金属离子结合,但氢键合至桥连乙酸盐。

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