Stability of N18C6H6: triangular versus hexagonal structure.
Stability of N18C6H6: triangular versus hexagonal structure.
复制标题
N18C6H6 的稳定性：三角形与六角形结构。
DOI：
10.1021/jp7103165
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Strout,DouglasL
中科院分区：
文献类型：
--
作者：
Pinkston,Anthony;McAdory,Deana;Jones,Jacqueline;Shields,Danielle;Langham,Ramola;Casey,Kasha;Strout,DouglasL
Large nitrogen cage molecules Nxhave been previously shown to prefer elongated, cylindrical structures with triangular caps versus more spherical structures composed entirely of pentagons and hexagons. It was argued that this preference derived from the electronic properties of the nitrogen atoms, including the lone pairs. In the current study, the same structural comparison is carried out, with the substitution of C−H-bonding groups for six of the nitrogens. Various substitution patterns on the cylindrical (triangular) and spherical (hexagonal) frameworks are examined. Isomers of N18C6H6are studied by theoretical calculations to determine the relative stability of triangular versus hexagonal structures, as well as the stability effects of the substitution patterns on each framework. Hartree−Fock theory, density functional theory (PBE1PBE), and perturbation theory (MP2) are employed, in conjunction with the correlation-consistent basis sets of Dunning. Stability trends within each class of molecules and between the two classes of molecules are calculated and discussed.
