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一种酸的气相酸度是用其相应负离子的质子亲和势来量度的。用质子亲和势可以避开溶剂干扰,定量地说明酸的酸性强弱。目前非金属元素氢化物的气相酸度,即PA(XH_(n-1)~-),已累集了许多数据,并能看出这些氢化物酸性的周期行为,同时还说明了非金属元素氢化物的酸性递变规律。可惜的是目前尚缺乏硼、碲和砹三元素氢化物的气相酸度的数据。硼化氢(BH_3)仅少量地存在于与二硼烷的平衡中,砹是存在量很微的人工合成元素,要研究此
The gas phase acidity of an acid is measured by the proton affinity of its corresponding anion. Proton affinity can be used to avoid solvent interference, a quantitative description of acid strength. At present, the gas phase acidity of non-metallic hydrides, PA (XH_ (n-1) ~ -), has accumulated a lot of data and can be seen the cyclic behavior of these hydride acidic, but also illustrates the non-metallic element hydrogenation The acidity of the law of things. Unfortunately, there is currently no data on the gas phase acidity of boron, tellurium and acenaphthene hydrides. Hydrogen borohydride (BH_3) exists only in a small amount in the equilibrium with diborane, and is a very small amount of synthetic elements. To study this