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Two N,N′-bis(pyridin-4-yl)pyridine-2,6-dicarboxamide coordination compounds
Acta Crystallographica Section E Crystallographic Communications ( IF 0.5 ) Pub Date : 2018-07-06 , DOI: 10.1107/s2056989018007351
Yue-Xin Guo 1 , Hong-Cui Ma 1 , Ren Bo 1 , Ning Zhao 1 , Li-Gang Zhao 1 , Jin-Peng Li 2 , Hong-Wei Hou 2
Affiliation  

The molecular structures of tetraaqua[N,N′-bis(pyridin-4-yl)pyridine-2,6-dicarboxamide]sulfatomanganese(II) dihydrate, [Mn(SO4)(C17H13N5O2)(H2O)4]·2H2O or [Mn(H2 L 1)(SO4)(H2O)4]·2H2O, (I), and tetraaquabis[N,N′-bis(pyridin-4-yl)pyridine-2,6-dicarboxamide]cadmium(II) sulfate tetrahydrate, [Cd(C17H13N5O2)2(H2O)4]SO4·4H2O or [Cd(H2O)4(H2 L 1)2]·SO4·4H2O, (II), both contain a central metal atom in a distorted octahedral geometry coordinated equatorially by four oxygen atoms from water molecules. In (I), the axial positions are occupied by a nitrogen atom from H2 L 1 and an oxygen atom from the sulfate anion, whereas in (II), the axial positions contain two nitrogen atoms from two different H2 L 1 ligands and the sulfate anion acts as the charge-balancing ion. π–π stacking between pyridine rings and a network of hydrogen bonds involving the water molecules and the sulfate anions play a crucial role in the molecular self-assembly of the two structures.

中文翻译:


两个N,N'-双(吡啶-4-基)吡啶-2,6-二甲酰胺配位化合物



tetraaqua的分子结构[氮,氮'-双(吡啶-4-基)吡啶-2,6-二甲酰胺]磺基锰(II)二水合物,[Mn(SO 4 )(C 17 号H 13氮5氧2 )(H 2哦) 4 ]·2H 2 O或[Mn(H 2 L 1 )(所以4 )(H 2哦) 4 ]·2H 2 O、(I) 和 tetraaquabis[氮,氮'-双(吡啶-4-基)吡啶-2,6-二甲酰胺]硫酸镉(II)四水合物,[Cd(C 17 号H 13氮5氧2 ) 2 (H 2哦) 4 ]所以4 ·4小时2 O 或 [Cd(H 2哦) 4 (H 2 L 1 ) 2 ]·所以4 ·4小时2 O、(II) 都包含一个扭曲八面体几何形状的中心金属原子,与水分子中的四个氧原子平轴配位。在 (I) 中,轴向位置被 H 中的氮原子占据2 L 1和来自硫酸根阴离子的氧原子,而在 (II) 中,轴向位置包含来自两个不同 H 的两个氮原子2 L 1配体和硫酸根阴离子充当电荷平衡离子。吡啶环之间的π-π堆积以及涉及水分子和硫酸根阴离子的氢键网络在这两种结构的分子自组装中起着至关重要的作用。
更新日期:2018-07-06
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