Stable Silaimines with Three- and Four-Coordinate Silicon Atoms
作者:Prinson P. Samuel、Ramachandran Azhakar、Rajendra S. Ghadwal、Sakya S. Sen、Herbert W. Roesky、Markus Granitzka、Julia Matussek、Regine Herbst-Irmer、Dietmar Stalke
DOI:10.1021/ic301543y
日期:2012.10.15
The reactions of silylenes with organic azides are quite diverse, depending on the substituents of the silylene center and on the nature of the azide employed. Elusive silaimine with three-coordinate silicon atom L1SiN(2,6-Triip2-C6H3) (5) L1 = CH[(C═CH2)(CMe)(2,6-iPr2C6H3N)2] and Triip = 2,4,6-triisopropylphenyl} was synthesized by treatment of the silylene L1Si (1) with a sterically demanding 2
甲硅烷基与有机叠氮化物的反应非常多样,这取决于甲硅烷基中心的取代基和所用叠氮化物的性质。难以捉摸silaimine具有三个坐标硅原子大号1的SiN(2,6- Triip 2 -C 6 H ^ 3)(5)L 1 = CH [(C = CH 2)(CME)(2,6-我镨2通过用空间上需要的2,6-双(2,4,6-三异丙基苯基)处理甲硅烷基L 1 Si(1),合成了C 6 H 3 N)2 ]和Triip = 2,4,6-三异丙基苯基}叠氮化苯(2,6-Triip 2 C6 H 3 N 3)。Lewis碱稳定的二氯甲硅烷基L 2 SiCl 2(2)L 2 = 1,3-双(2,6- i Pr 2 C 6 H 3)咪唑-2-亚甲基}与Ph 3 SiN 3的反应得到四-配位的硅亚胺L 2(Cl 2)SiNSiPh 3(6)。2,6- Triip的治疗2 ç 6 ħ 3 Ñ 3为L 3的SiCl(3)(L
Facile Synthesis of Cyclopropene Analogues of Aluminum and an Aluminum Pinacolate, and the Reactivity of LAl[<i>η</i><sup>2</sup>-C<sub>2</sub>(SiMe<sub>3</sub>)<sub>2</sub>] toward Unsaturated Molecules (L = HC[(CMe)(NAr)]<sub>2</sub>, Ar = 2,6-<i>i-</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)
作者:Chunming Cui、Sinje Köpke、Regine Herbst-Irmer、Herbert W. Roesky、Mathias Noltemeyer、Hans-Georg Schmidt、Bernd Wrackmeyer
DOI:10.1021/ja003185i
日期:2001.9.1
of LAlI(2) (1) (L = HC[(CMe)(NAr)](2), Ar = 2,6-i-Pr(2)C(6)H(3)) with potassium in the presence of alkynes C(2)(SiMe(3))(2), C(2)Ph(2), and C(2)Ph(SiMe(3)) yielded the first neutral cyclopropene analogues of aluminumLAl[eta(2)-C(2)(SiMe(3))(2)] (3), LAl(eta(2)-C(2)Ph(2)) (4), and LAl[eta(2)-C(2)Ph(SiMe(3))] (5), respectively, whereas reduction of 1 in the presence of Ph(2)CO gave an aluminum pinacolate
A Two-Coordinate Iron(II) Imido Complex with NHC Ligation: Synthesis, Characterization, and Its Diversified Reactivity of Nitrene Transfer and C–H Bond Activation
作者:Jun Cheng、Jian Liu、Xuebing Leng、Thomas Lohmiller、Alexander Schnegg、Eckhard Bill、Shengfa Ye、Liang Deng
DOI:10.1021/acs.inorgchem.9b01147
日期:2019.6.3
reaction of an iron(0) complex with the bulky azide ArTripN3. Spectroscopic investigations in combination with DFT calculations established a high-spin S = 2 ground spin state for 3, consistent with its long Fe–N multiple bond of 1.715(2) Å revealed by X-ray diffraction analysis. Complex 3 exhibits unusual activity of nitrene transfer and C–H bondactivation in comparison to the reported iron imido complexes
铁末端亚氨基物种通常被暗示为铁催化的转化中的反应中间体。尽管大量工作致力于中价和高价的亚铁酰亚胺,但由于难以获得亚铁(II)亚胺,迄今为止,其化学仍未得到很好的研究。在这里,我们提出了对二配位的亚铁亚胺络合物[(IPr)Fe(NAr Trip)](3 ; IPr = 1,3-bis(2',6'-二异丙基苯基)咪唑-2-亚铁; Ar Trip = 2,6-双(2',4',6'-三异丙基苯基)苯基,由铁(0)配合物与庞大的叠氮化物Ar Trip N 3反应制得。结合DFT计算的光谱研究建立了高转速S= 2接地自旋状态为3,用1.715其长的Fe-N多键一致的(2)揭示了通过X射线衍射分析。与已报道的亚氨基铁络合物相比,络合物3表现出不同寻常的腈转移和CH键活化作用。具体而言,反应3与CH 2 ═CHAr CF3,缺电子烯烃,和CO,一个强π酸,容易得到氮宾转印产品中,Ar CF3 CH═CHN
Stable, Monomeric Imides of Aluminum and Gallium: Synthesis and Characterization of [{HC(MeCDippN)2}MN-2,6-Trip2C6H3] (M=Al or Ga; Dipp=2,6-iPr2C6H3; Trip=2,4,6-iPr3C6H2)
作者:Ned J. Hardman、Chunming Cui、Herbert W. Roesky、William H. Fink、Philip P. Power
A short Ga-N bond with double-bond character is displayed by the first monomeric imide of gallium, which was obtained by the reaction of [HC(MeCDippN)2 }M:] (Dipp=2,6-iPr2 C6 H3 , M=Ga; see picture) with N3 -2,6-Trip2 C6 H3 (Trip=2,4,6-iPr3 C6 H2 ). The analogous aluminum (M=Al) compound is also readily available.
通过[HC(MeCDippN)2 } M:](Dipp = 2,6-iPr 2 C 6 H 3,M = Ga;见图),其中N 3 -2,6-Trip 2 C 6 H 3(Trip = 2,4,6-iPr 3 C 6 H 2)。类似的铝(M = Al)化合物也是容易获得的。
作者:Rajendra S. Ghadwal、Herbert W. Roesky、Carola Schulzke、Markus Granitzka
DOI:10.1021/om100737v
日期:2010.12.13
N-Heterocyclic carbene stabilized dichlorosilaimine IPr center dot Cl2Si=N(Diip) (2) has been synthesized by the reaction of dichlorosilylene IPr center dot SiCl2 (1) with bis(2,6-diisopropylphenyl)carbodiimide (IPr = :C[N(2,6-i-Pr-2-C6H3)CH](2), Diip = 2,6-i-Pr-2-C6H3). Reaction of 1 with terphenyl azides also affords dichlorosilaimines IPr center dot Cl2Si=N(2,6-Diip(2)-C6H3) (3) and IPr center dot Cl2Si=N(2,6-Triip(2)-C6H3) (4) (Triip = 2,4,6-i-Pr-3-C6H2). Compounds 2-4 are stable under an inert atmosphere and were characterized by elemental analysis and NMR spectroscopic studies. The molecular structures of 2-4 were determined by single-crystal X-ray analysis.