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本文研究了碳酸盐、硝酸盐、硼酸盐分子体积的若干特点。该类盐中结晶水分子体积近似为一常数。当复盐中阳离子配位数与单盐中相同时,分子体积加和性精度很高。100多组数据证明一般性的加和仍然成立,平均相对误差±2.31％,由此提出拓扑体积的概念。将分子体积与阳离子半径的直线关系外推可得到CO_3~(2-),NO_3~-,BO_3~(3-)在堆积时的体积效应,相当于体积为三个O~(2-)体积之和的大球。文中还论证了建立离子体积表的可能性。
In this paper, some characteristics of the molecular volume of carbonate, nitrate and borate are studied. The volume of crystal water molecules in this type of salt is approximately a constant. When the cation complexation number in the double salt is the same as that in the single salt, the molecular volume addition accuracy is high. More than 100 sets of data prove that the general addition still holds, with an average relative error of ± 2.31%, thus the concept of topological volume is proposed. The volume effect of CO_3 ~ (2 -), NO_3 ~ -, BO_3 ~ (3-) during packing is obtained by extrapolating the linear relationship between the molecular volume and the cation radius, corresponding to a volume of three O ~ (2-) And the big ball. The article also demonstrates the possibility of establishing an ion volume chart.