Process for stabilizing unsaturated organosilicon compounds
申请人:Wacker-Chemie GmbH
公开号:US20040171859A1
公开(公告)日:2004-09-02
A process for stabilizing organosilicon compounds bearing unsaturated groups during their preparation, distillation, and/or storage, the organosilicon compounds bearing unsaturated groups having been obtained by reacting a haloalkylsilane with a salt of an unsaturated organic acid, by adding one or more compounds of the formula I
1
wherein R
1
and R
2
are identical or different linear or branched C
1-20
alkyl, and the radicals R
3
are identical or different and are hydrogen or linear or branched alkyl radicals having 1-20 carbon atoms.
The novel stable organosilicon compound containing pentacoordinated silicon atom, named as (trifluorosilyl)methyl 2-methylacrylate, was synthesized and fully characterized including single-crystal X-ray diffraction. The asymmetric unit of the title compound contains two independent molecules, one of which adopting the s-cis configuration and the other has the s-trans configuration with respect to the
合成了含有五配位硅原子的新型稳定有机硅化合物,命名为(三氟甲硅烷基)2-甲基丙烯酸甲酯,并对其进行了完整的表征,包括单晶 X 射线衍射。标题化合物的不对称单元包含两个独立的分子,其中一个采用 s- cis构型,另一个在 C O 和 C C 键方面具有 s-trans 构型。在晶体中,由于四链键相互作用和氢键 C,构象异构体形成顺式和反式二聚体对H... F. 这些二聚体的能量和几何特征是通过 DFT 方法在 M06-2X/6-311G(d,p) 理论水平使用 QTAIM 分析计算的。使用 Onsager 自洽反应场法在极性介质 (DMSO) 中计算晶体堆积的两个二聚体片段。
METHOD FOR THE PRODUCTION OF POLYMERIZABLE SILICONES
申请人:Jandke Markus
公开号:US20100041909A1
公开(公告)日:2010-02-18
Siloxy-substituted silane-containing polymerizable silicones are prepared in high purity by metering a substituted alkoxysilane into a mixture of disiloxane, acetic acid, and acid catalyst, adding acetyl chloride, separating an acidic phase from a product phase, and adding hexamethyldisilazane to the product phase, which is then distilled.
Crystal structure of 2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3]undec-1-ylmethyl-2-methylacrylate
作者:Yu. I. Bolgova、T. N. Borodina、O. M. Trofimova、V. I. Smirnov
DOI:10.1134/s002247661703026x
日期:2017.5
The XRD method is used to determine the molecular and crystalstructure of 2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3]undec-1-ylmethyl-2-methylacrylate (H2C=C(Me)C(O)OCH2Si(OCH2CH2)3N). The crystallographic data are as follows: space group Р212121, а = 9.7659(1) Å, b = 10.017(1) Å, с = 17.915(2) Å, V = 1753.3(3) Å3, Z = 4. The coordination polyhedron of the silicon atom is a distorted trigonal bipyramid
XRD 方法用于确定 2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3]unddec-1-ylmethyl-2-methylacrylate (H2C=C(Me)C (O)OCH2Si(OCH2CH2)3N)。晶体学数据如下:空间群Р212121, а = 9.7659(1) Å, b = 10.017(1) Å, с = 17.915(2) Å, V = 1753.3(3) Å3, Z = 4. 配位多面体硅原子是一个扭曲的三角双锥。N→Si 配位键的长度为 2.099 Å。