Consistent van der Waals radii for the whole main group.

Consistent van der Waals radii for the whole main group.
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DOI:
10.1021/jp8111556
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发表时间:
2009-05-14
期刊:
The journal of physical chemistry. A
影响因子:
--
通讯作者:
Truhlar DG
Truhlar DG
中科院分区:
其他
文献类型:
--
作者:
Mantina M;Chamberlin AC;Valero R;Cramer CJ;Truhlar DG

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原子半径没有精确的定义,但却是建模和理解分子结构和相互作用的广泛使用的参数。由Bondi从分子晶体和稀有气体晶体确定的范德华半径是最广泛使用的值,但Bondi只推荐了元素周期表中44种主族元素中的28种的半径值。在本文中,我们给出了其他16个原子的半径;这些新的半径是以一种与邦迪标度兼容的方式确定的。所选择的方法是一组由相对论耦合团簇电子结构计算得到的邦迪半径与排斥壁距离的双参数关联式。新确定的半径是:Be,1.53;B,1.92;Al,1.84;Ca,2.31;Ge,2.11;Rb,3.03;Sr,2.50;Sb,2.06;Cs,3.43;Ba,2.68;Bi,2.07;Po,1.97;At,2.02;Rn,2.20;Fr,3.48;和Ra,2.83。
Atomic radii are not precisely defined but are nevertheless widely used parameters in modeling and understanding molecular structure and interactions. The van der Waals radii determined by Bondi from molecular crystals and noble gas crystals are the most widely used values, but Bondi recommended radius values for only 28 of the 44 main-group elements in the periodic table. In the present article we present atomic radii for the other 16; these new radii were determined in a way designed to be compatible with Bondi’s scale. The method chosen is a set of two-parameter correlations of Bondi’s radii with repulsive-wall distances calculated by relativistic coupled-cluster electronic structure calculations. The newly determined radii (in Å) are Be, 1.53; B, 1.92; Al, 1.84; Ca, 2.31; Ge, 2.11; Rb, 3.03; Sr, 2.50; Sb, 2.06; Cs, 3.43; Ba, 2.68; Bi, 2.07; Po, 1.97; At, 2.02; Rn, 2.20; Fr, 3.48; and Ra, 2.83.
DOI: 10.1080/00268979300103121
发表时间: 1993-12-20
期刊: MOLECULAR PHYSICS
影响因子: 1.7
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