如今,对基于杂原子配合物的自由基自由基的探索在当代研究中占有越来越重要的地位。在本文中,我们研究了六配位或五配位有机氯硅烷和相关的五配位硅烷基的行为及其局限性,这些新配位族是在光催化还原条件下生成自由基的新配合物。特别是用fac -Ir(ppy)3(5 mol%)/ NEt 3处理氯苯基双[N,S-吡啶-2-硫代(-)]硅(IV)或相关的甲硅烷基衍生物(1.5当量)系统在蓝色LED照射下会生成一个硫代吡啶基,该基团可以通过与烯丙基砜反应来参与碳硫键的形成。计算研究支持了这一实验发现,特别是通过显示C-Ts键的均质裂解比硫代吡啶基自由基的裂解更受青睐。
Neutral Pentacoordinate Silicon(IV) Complexes with a Tridentate Dianionic<i>O</i>,<i>N</i>,<i>O</i>or<i>N</i>,<i>N</i>,<i>O</i>Ligand, an Anionic PhX Ligand (X = O, S, Se), and a Phenyl Group: Synthesis and Structural Characterization in the Solid State and in Solution
作者:Jörg Weiß、Bastian Theis、Johannes A. Baus、Christian Burschka、Rüdiger Bertermann、Reinhold Tacke
DOI:10.1002/zaac.201300523
日期:2014.2
pentacoordinate silicon(IV) complexes with a SiO3NC, SiO2SNC, SiO2SeNC, SiO2N2C, SiOSN2C, or SiOSeN2C skeleton was synthesized and structurally characterized by multinuclear NMR spectroscopy in the solid state and in solution and by single-crystal X-ray diffraction. The compounds studied contain a tridentate dianionic O,N,O or N,N,O ligand, an anionic PhX ligand (X = O, S, Se), and a phenyl group.
Neutral Hexacoordinate Silicon(IV) Complexes with a Tridentate Dianionic
<i>O</i>
,
<i>N</i>
,
<i>X</i>
Ligand (X = O, N, S), Bidentate Monoanionic
<i>X</i>
,
<i>N</i>
Ligand (X = O, S), and Phenyl Ligand: Compounds with a
<i>Si</i>
O
<sub>3</sub>
N
<sub>2</sub>
C,
<i>Si</i>
SO
<sub>2</sub>
N
<sub>2</sub>
C,
<i>Si</i>
O
<sub>2</sub>
N
<sub>3</sub>
C,
<i>Si</i>
SON
<sub>3</sub>
C, or
<i>Si</i>
S
<sub>2</sub>
ON
<sub>2</sub>
C Skeleton
作者:Jörg Weiß、Johannes A. Baus、Christian Burschka、Reinhold Tacke
DOI:10.1002/ejic.201400083
日期:2014.5
A series of neutralhexacoordinatesilicon(IV) complexes (4a, 4b, 5a, 5b, 6a, and 6b) with a SiO3N2C, SiSO2N2C, SiO2N3C, SiSON3C, or SiS2ON2C skeleton have been synthesized and structurally characterized by solid-state and solution NMR spectroscopy and single-crystal X-ray diffraction. These studies were performed with a special emphasis on comparing the respective O/NMe/S analogues 4a/5a/6a and 4b/5b/6b
Neutral Hexacoordinate Silicon(IV) Complexes with a
<i>Si</i>
O
<sub>4</sub>
NC or
<i>Si</i>
O
<sub>3</sub>
N
<sub>2</sub>
C Skeleton and Neutral Pentacoordinate Silicon(IV) Complexes Containing a Trianionic Tetradentate
<i>O</i>
,
<i>N</i>
,
<i>O</i>
,
<i>O</i>
Ligand
作者:Jörg Weiß、Katharina Sinner、Johannes A. Baus、Christian Burschka、Reinhold Tacke
DOI:10.1002/ejic.201301185
日期:2014.1
The neutralhexacoordinatesilicon(iv) complexes 8−10 (SiSO3NC skeleton) were synthesized by replacement of the chloro ligand of the pentacoordinate chlorosilicon(iv) complex 5 by monoanionic bidentate O,Oligands of the acetylacetonato type. For that purpose, compound 5 was treated with compounds of the formula type R1C(O)−CH═C(OSiMe3)R2 (R1 = R2 = Me; R1 = R2 = Ph; R1 = Me, R2 = Ph). In contrast