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本文研究了磷酸盐、砷酸盐、钒酸盐及硼酸盐分子体积(V)的若干特点,此类盐中单位酸根占有体积(V)定量地取决于阳离子的半径、电价和数目以及阴离子团的种类,文中给出了磷酸盐、砷酸盐、钒酸盐和硼酸盐的V值与上述因素之间的解析函数式,这些盐类的分子体积等于阴离子团的拓扑体积和阳离子的拓扑体积之和,并得到了一套普适的阴、阳离子拓扑体积数值,其中结晶水分子体积近似为一常数,平均值为24.4 ,σ_(n-1),=2.1;氢氧根(OH)-的拓扑体积也近似为一常数,平均值为16.89,σ_(n-1)=1.68。
In this paper, several characteristics of the molecular volume (V) of phosphates, arsenates, vanadates and borates have been studied. The occupied volume (V) of a unit acid in such salts depends quantitatively on the radius of the cation, the charge and the number, and the anion In this paper, the analytic functions between the V values of phosphates, arsenates, vanadates and borates and the above factors are given. The molecular volumes of these salts are equal to the topological volumes of the anionic groups and the The volume of the crystal water is approximately constant, with an average value of 24.4, σ_ (n-1), = 2.1; the hydroxyl radical (OH ) - is also approximately a constant, with an average of 16.89 and σ_ (n-1) = 1.68.