(Z)-(4-[1-CYANO-3-(DIETHYLIMINIO)-1-PROPENYL]PHENYL)DICYANOMETHANIDE, A NOVEL BLUE WINDOW ZWITTERIONIC MOLECULE FOR NONLINEAR OPTICS

被引：11

作者：

COLE, JC ^{[1
]}

HOWARD, JAK ^{[1
]}

CROSS, GH ^{[1
]}

SZABLEWSKI, M ^{[1
]}

机构：

[1] UNIV DURHAM,DEPT PHYS,APPL PHYS GRP,DURHAM DH1 3LE,ENGLAND

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1995年 / 51卷

关键词：

D O I：

10.1107/S0108270194006487

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structure of the title compound, C17H16N4, (1), has been elucidated. The molecule is shown to be planar with a highly delocalized pi system between the two zwitterionic charge centres. This rationalizes the strong solution dipole moment exhibited by this molecule (45 D) and its high measured first hyperpolarizability (190 x 10(-30) e.s.u.). The electronic spectrum of the molecule consists of strong transitions in the visible region between 500 and 700 nm, but with an absence of absorption to either side. The unusually low optical absorption between 450 and 470 nm suggests that the description 'blue window material' may be applied in relation to frequency doubling applications.

引用

页码：715 / 718

页数：4

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