Crystal structure of 2-bromo-3-di­methyl­amino-N,N,N′,N′,4-penta­methyl-4-(tri­methyl­sil­yloxy)pent-2-eneamidinium bromide

Acta Crystallographica Section E: Crystallographic Communications

Kantlehner, W.¹  Tiritiris, I.¹  Kress, R.² 

[1] Fakultät Chemie/Organische Chemie, Hochschule Aalen, Beethovenstrasse 1, D-73430 Aalen, Germany

关键词: CRYSTAL STRUCTURE;    BROMIDE;    AMIDINIUM;    SALT;    BR...BR INTERACTIONS;    C-H...BR INTERACTIONS;   

DOI  :  10.1107/S205698901502383X

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The reaction of the ortho­amide 1,1,1-tris­(di­methyl­amino)-4-methyl-4-(tri­methyl­sil­yloxy)pent-2-yne with bromine in benzene, yields the title salt, C15H33BrN3OSi+·Br−. The C—N bond lengths in the amidinium unit are 1.319 (6) and 1.333 (6) Å, indicating double-bond character, pointing towards charge delocalization within the NCN plane. The C—Br bond length of 1.926 (5) Å is characteristic for a C—Br single bond. Additionally, there is a bromine–bromine inter­action [3.229 (3) Å] present involving the anion and cation. In the crystal, weak C—H⋯Br inter­actions between the methyl H atoms of the cation and the bromide ions are present.

【 授权许可】

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