Bulk polarity of 3,5,7-trinitro-1-azaadamantane mediated by asymmetric NO2(lone pair)...NO2(π-hole) supramolecular bonding.
Bulk polarity of 3,5,7-trinitro-1-azaadamantane mediated by asymmetric NO2(lone pair)...NO2(π-hole) supramolecular bonding.
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不对称NO2(孤对)NO2(Ï孔)超分子键介导的3,5,7-三硝基-1-氮杂金刚烷的整体极性
DOI:
10.1107/s2053229620006762
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
H. Krautscheid
中科院分区:
文献类型:
--
作者:
K. V. Domasevitch;G. A. Senchyk;H. Krautscheid
Molecular crystals exhibiting polar symmetry are important paradigms for developing new electrooptical materials. Though accessing bulk polarity still presents a significant challenge, in some cases it may be rationalized as being associated with the specific molecular shapes and symmetries and subtle features of supramolecular interactions. In the crystal structure of 3,5,7-trinitro-1-azaadamantane, C9H12N4O6, the polar symmetry of the molecular arrangement is a result of complementary prerequisites, namely the C3v symmetry of the molecules is suited to the generation of polar stacks and the inherent asymmetry of the principal supramolecular bonding, as is provided by NO2(lone pair)⋯NO2(π-hole) interactions. These bonds arrange the molecules into a trigonal network. In spite of the apparent simplicity, the structure comprises three unique molecules (Z′ = 1 \over 3 + 1 \over 3 + 1 \over 3), two of which are donors and acceptors of three N⋯O interactions and the third being primarily important for weak C—H⋯O hydrogen bonding. These distinct structural roles agree with the results of Hirshfeld surface analysis. A set of weak C—H⋯O and C—H⋯N hydrogen bonds yields three kinds of stacks. The orientation of the stacks is identical and therefore the polarity of each molecule contributes additively to the net dipole moment of the crystal. This suggests a special potential of asymmetric NO2(lone pair)⋯NO2(π-hole) interactions for the supramolecular synthesis of acentric materials.
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DOI:
10.1002/zaac.19774370120
发表时间:
1977
期刊:
Zeitschrift für anorganische und allgemeine Chemie
影响因子:
--
作者:
W. Lindemann;R. Wögerbauer;P. Berger
通讯作者:
P. Berger
影响因子:
4.4
作者:
C. Svensson;J. Albertsson;R. Liminga;A. Kvick;S. Abrahams
通讯作者:
S. Abrahams
影响因子:
3.8
作者:
Bertolotti, Federica;Gervasio, Giuliana
通讯作者:
Gervasio, Giuliana
DOI:
10.1107/s010827018400528x
发表时间:
1984
期刊:
Acta Crystallographica Section C-crystal Structure Communications
影响因子:
--
作者:
C. George;R. Gilardi
通讯作者:
R. Gilardi
影响因子:
3.1
作者:
M. Daszkiewicz
通讯作者:
M. Daszkiewicz