含2-胺基嘧啶或2-胺基-4-甲基嘧啶配位基與 二價鋅化合物之合成與結構探討

Synthesis and structures of Zn(II) compounds containing 2-aminopyrimidine or 2-amino-4-methylpyrimidine

鐘蒼賢(Cang-Sian Jeng)

指導教授 ： 陳志德

中原大學/理學院/化學研究所/碩士(2009年)

https://doi.org/10.6840/cycu200901044

摘要

本論文主旨在於探討2-胺基嘧啶(2-aminopyrimidine)和2-胺基-4-甲基嘧啶(2-amino-4-methylpyrimidine)與鋅金屬鹽類所合成之晶體結構，與其中所包含的弱作用力，以及其對於堆疊模式的影響。利用配位基與二價鋅鹽類反應，可得到下列八種化合物: [ZnCl2(L1)2] (L1 = 2-Aminopyrimidine), 1; [ZnBr2(L1)2], 2; [ZnI2(L1)2], 3; [ZnBr(OH)(L1)]n, 4; [Zn(NO3)(OH)(L1)]n, 5; [ZnCl2(L2)2] (L2 = 2-Amino-4-methylpyrimidine), 6; [ZnBr2(L2)2], 7; [ZnI2(L2)2], 8。以上八種化合物的構造均已利用X-ray鑑定之。
經由X-ray 所鑑定出的結構可得知，化合物為1 – 3相同構形，化合物6 – 8亦為相同構形。上述化合物皆以鋅金屬離子為中心配位上兩個有機配位基及兩個陰離子形成四面體構型的構型。分子和分子之間包含有C–H---X, N–H---X, N–H---N, 及π – π stacking 等作用力，而形成二維網狀結構。
化合物 4和 5為相同構形，鋅金屬中心配位上一個有機配位基及一個陰離子和兩個氧原子所形成四面體構型的構型。化合物形成一維的高分子鏈狀結構。鏈與鏈之間以C–H---O, O–H---O, N–H---N, 及π – π stacking 等作用力連結，而形成二維及三維高分子結構。

關鍵字

2-胺基-4-甲基嘧啶 ； 2-胺基嘧啶

並列摘要

The syntheses and structures of a series of zinc compounds [ZnCl2(L1)2] (L1 = 2-Aminopyrimidine), 1; [ZnBr2(L1)2], 2; [ZnI2(L1)2], 3; [ZnBr(OH)(L1)]n, 4; [Zn(NO3)(OH)(L1)]n, 5; [ZnCl2(L2)2] (L2 = 2-Amino-4-methylpyrimidine), 6; [ZnBr2(L2)2], 7; [ZnI2(L2)2], 8, are reported. All compounds have been structurally characterized by X-ray crystallography.
Compounds 1 - 3 are same configuration as well as compounds 6 - 8, which consist of a central zinc(II) metal centers coordinated by two organic ligands and two anions, forming a tetrahedral geometry. The C–H---X, N–H---X, N–H---N, and π – π stacking interactions were found in the structures, which link the molecules to form 2D structures.
Compounds 4 and 5 form polymeric 1D structures, which consist of central zinc(II) metal centers coordinated by one organic ligands, one anions, and two oxygen atoms, forming a tetrahedral geometry. The C–H---O, O–H---O, N–H---N, and π – π stacking interactions were found in the structures, which link the molecules to form 2D or 3D polymer structures.

並列關鍵字

2-aminopyrimidine ； 2-amino-4-methylpyrimidine

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