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二酸盐及其与氨的反应

Bryton R Varju¹, Jefferson A Pells¹, Sara A Wollschlaeger¹

¹Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.

|January 17, 2024

概括

合成了两种二酸盐协调聚合物,并与氨反应. 一种聚合物显示可逆氨结合,而另一种聚合物分解,产生新的-氨复合物.

科学领域:

协调化学协调化学
材料科学材料科学材料科学
无机化学无机化学

背景情况:

阴离子二酸盐协调聚合物代表了一类材料,在气体吸附和催化中具有潜在的应用.
了解这些聚合物的结构多样性和反应性对于设计功能性材料至关重要.
结构维度 (3D vs. 2-D) 对与氨等客分子的相互作用的影响具有重大意义.

研究的目的:

合成和描述两种新的阴离子二酸盐协调聚合物TCCA和[nBu4N]2[Cd(Au(CN) 2) 4].
为了研究这些协调聚合物的与氨气蒸气的反应.
使用光谱技术阐明氨相互作用时的结构变化和反应机制.

主要方法:

合成和单晶X射线衍射用于协调聚合物的结构确定.
用不同度的氨气蒸汽进行反应研究.
振动光谱 (例如,FTIR) 来监测反应期间的化学键变化.
用热分析来研究氨结合的可逆性.

主要成果:

两个阳离子二酸盐协调聚合物TCCA (3D结构) 和[nBu4N]2[Cd(Au(CN) 24] (2D结构) 已成功合成和特征.
TCCA与氨 (≥1000 ppm) 反应,形成具有高量子产率 (0.88) 的氨添加物. 这种反应在加热超过110°C时是可逆的.
[nBu4N]2[Cd(Au(CN) 24]与缩的氨反应形成Cd(NH3) 2[Au(CN) 2],其中包括Cd-NC键的断裂和部分分解.
振动光谱证实了Cd-NC键的断裂是两种材料与氨的主要反应途径.

结论:

二甲酸盐协调聚合物的维度显著影响它们对氨的反应性.
TCCA表现出可逆的氨结合,这表明在气体储存或传感方面有潜在的应用.
反应机制涉及金属-连接体键的裂变,导致可逆的形形成或分解,这取决于聚合物结构.

关键词:

氨气氨气氨气是一种气友性气友性气友性协调聚合物的聚合物化物是一种化物.黄金黄金黄金黄金

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