Why is the antipodal effect in closo-1-SB9H9 so large? A possible explanation based on the geometry from the concerted use of gas electron diffraction and computational methods.
Why is the antipodal effect in closo-1-SB9H9 so large? A possible explanation based on the geometry from the concerted use of gas electron diffraction and computational methods.
复制标题
为什么 closo-1-SB9H9 的反足效应如此之大?
DOI:
10.1039/c1dt10053j
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Hnyk D
中科院分区:
文献类型:
--
作者:
Hnyk D
The molecular structure of 1-thia-closo-decaborane(9), 1-SB9H9, has been determined by the concerted use of gas electron diffraction and quantum-chemical calculations. Assuming C4v symmetry, the cage structure was distorted from a symmetrically bicapped square antiprism (D4d symmetry) mainly through substantial expansion of the tetragonal belt of boron atoms adjacent to sulfur. The S–B and (B–B)mean distances are well determined with rh1 = 193.86(14) and 182.14(8) pm, respectively. Geometrical parameters calculated using the MP2(full)/6-311++G** method and at levels reported earlier [MP2(full)/6-311G**, B3LYP/6-311G** and B3LYP/cc-pVQZ], as well as calculated vibrational amplitudes and 11B NMR chemical shifts, are in good agreement with the experimental findings. In particular, the so-called antipodal chemical shift of apical B(10) (71.8 ppm) is reproduced well by the GIAO-MP2 calculations and its large magnitude is schematically accounted for, as is the analogous antipodal chemical shift of B(12) in the twelve-vertex closo-1-SB11H11.
登录
查看更多内容
影响因子:
4
作者:
D. Hnyk;D. Rankin
通讯作者:
D. Rankin
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
W. Pretzer;R. Rudolph
通讯作者:
R. Rudolph
影响因子:
4.6
作者:
J. Holub;M. Bakardjiev;B. Štíbr;D. Hnyk;O. Tok;B. Wrackmeyer
通讯作者:
B. Wrackmeyer
影响因子:
4
作者:
S. L. Hinchley;H. Robertson;K. B. Borisenko;A. Turner;Blair F. Johnston;D. Rankin;M. Ahmadian;J. N. Jones;A. Cowley
通讯作者:
A. Cowley
影响因子:
--
作者:
E. Hamilton;R. Kultyshev;B. Du;E. Meyers;Sheng;C. Hadad;S. Shore
通讯作者:
S. Shore