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.
Strongly bent nickel imides supported by a chelating bis(N-heterocyclic carbene) ligand
作者:Nicole D. Harrold、Gregory L. Hillhouse
DOI:10.1039/c3sc51517f
日期:——
nickel-arylimido complexes of the type L2NiNAr supported by a new chelating bis(N-heterocycliccarbene) ligand are described, including experimental, structural, and computational data to validate this atypical binding motif. Upon oxidation the strongly bent imido complex undergoes C,C-coupling and dehydrogenation to afford a complex bearing an unusual diphenoquinonediimine ligand bridging two Ni(II) centers.
描述了由新的螯合双(N-杂环卡宾)配体支持的L 2 Ni NAr型不寻常的弯曲镍-芳基酰亚胺络合物的合成和氧化还原反应性,包括实验,结构和计算数据,以验证这种非典型结合基序。氧化后,强烈弯曲的亚胺基络合物进行C,C偶联和脱氢反应,得到带有一个桥接两个Ni(II)中心的不寻常的二苯醌二亚胺配体的络合物。
An indium(<scp>i</scp>) tetramer bound by anionic N-heterocyclic olefins: ambiphilic reactivity, transmetallation and a rare indium-imide
作者:Samuel R. Baird、Emanuel Hupf、Ian C. Watson、Michael J. Ferguson、Eric Rivard
DOI:10.1039/d2cc07006e
日期:——
An organometallic tetrahedron-shaped indium(I) tetramer [(MeIPrCH)In]4 (MeIPrCH = [(MeCNDipp)2CCH]−; Dipp = 2,6-iPr2C6H3) supported by anionic N-heterocyclic olefin (aNHO) ligands is reported. The monomeric unit of this species exhibits both Lewis acidic and basic character at indium, while the steric profile of the aNHO ligand enables isolation of a rare monomeric imide, RInNR′.
由阴离子 N 支持的有机金属四面体形铟 ( I ) 四聚体 [( Me IPrCH)In] 4 ( Me IPrCH = [(MeCNDipp) 2 C CH] − ; Dipp = 2,6- i Pr 2 C 6 H 3 ) -报道了杂环烯烃 (aNHO) 配体。该物种的单体单元在铟处表现出路易斯酸性和碱性特征,而 aNHO 配体的空间结构能够分离稀有的单体酰亚胺 RInNR'。
Two Types of Intramolecular Addition of an Al−N Multiple-Bonded Monomer LAlNAr‘ Arising from the Reaction of LAl with N<sub>3</sub>Ar‘ (L = HC[(CMe)(NAr)]<sub>2</sub>, Ar‘ = 2,6-Ar<sub>2</sub>C<sub>6</sub>H<sub>3</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)
作者:Hongping Zhu、Jianfang Chai、Vadapalli Chandrasekhar、Herbert W. Roesky、Jörg Magull、Denis Vidovic、Hans-Georg Schmidt、Mathias Noltemeyer、Philip P. Power、William A. Merrill
DOI:10.1021/ja0475712
日期:2004.8.1
The reaction of beta-diketiminated aluminum(I) monomer LAl with a large bulky azide N3Ar' (L = HC(CMeNAr)2, Ar' = 2,6-Ar2C6H3, Ar = 2,6-iPr2C6H3) in the temperature range from -78 degrees C to room temperature affords two different isomers 2 and 3, which have been characterized by spectroscopic and X-ray structural analyses, as well as elemental analysis. The variable-temperature 1H NMR kinetic studies of this reaction indicate the existence of the monomer LAlNAr' (1) at low temperature and the thermal stability of the compounds increases in the order of 1 < 2 < 3.
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.