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pentacarbonyl(η2-bis(trimethylsilyl)ethyne)tungsten(0) | 243465-75-0

中文名称
——
中文别名
——
英文名称
pentacarbonyl(η2-bis(trimethylsilyl)ethyne)tungsten(0)
英文别名
pentacarbonyl(bis(trimethylsilyl)ethyne)tungsten(0);W(CO)5(η(2)-bis(trimethylsilyl)ethyne);[W(CO)5(η2-bis(trimethylsilyl)ethyne)];W(CO)5(η2-bis(trimethylsilyl)ethyne);pentacarbonyl(η2-btmse)tungsten(0);W(CO)5(η2-btmse)
pentacarbonyl(η2-bis(trimethylsilyl)ethyne)tungsten(0)化学式
CAS
243465-75-0
化学式
C13H18O5Si2W
mdl
——
分子量
494.304
InChiKey
MGMLILWYDLDPNJ-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    None
  • 重原子数:
    None
  • 可旋转键数:
    None
  • 环数:
    None
  • sp3杂化的碳原子比例:
    None
  • 拓扑面积:
    None
  • 氢给体数:
    None
  • 氢受体数:
    None

反应信息

  • 作为反应物:
    描述:
    N,N'-bis(ferrocenylmethylene)ethylenediamine Schiff base 、 pentacarbonyl(η2-bis(trimethylsilyl)ethyne)tungsten(0)二氯甲烷 为溶剂, 以65%的产率得到tetracarbonyl(N,N'-bis(ferrocenylmethylene)ethylenediamine)tungsten(0)
    参考文献:
    名称:
    第6族四羰基(N,N'-双(二茂铁基亚甲基)乙二胺)金属(0)配合物的合成与电化学
    摘要:
    的Cr(CO)的热取代反应4(η 2:2 -1,5-环辛二烯),钼(CO)4(η 2:2 -norbornadiene)和W(CO)5(η 2 -双(三甲基硅烷基)乙炔与N,N'-双(二茂铁基亚甲基)乙二胺(bfeda)生成M(CO)4(bfeda)配合物,可从反应溶液中分离并通过元素分析,MS,IR和NMR光谱表征。在钨的情况下,形成W(CO)5(bfeda)作为中间体,然后进行闭环反应,得到最终产物W(CO)4(bfeda)。M(CO)4的电化学行为通过使用四氟硼酸四丁铵在二氯甲烷中的循环伏安法(CV)和微分脉冲伏安法(DPV)研究了bfeda配合物。在其CH 2 Cl 2溶液中,在0°C时于其峰值电位连续进行络合物的恒电位电解,然后电解,每5 mC原位记录电子吸收光谱。在Cr(CO)4(bfeda)的电解中,首先氧化中心Cr(0),然后电解过程继续氧化两个二茂铁基,直到每摩尔络合物总
    DOI:
    10.1016/j.jorganchem.2006.08.079
  • 作为产物:
    描述:
    六羰基钨二(三甲基甲硅烷基)乙炔正己烷 为溶剂, 以86.2%的产率得到pentacarbonyl(η2-bis(trimethylsilyl)ethyne)tungsten(0)
    参考文献:
    名称:
    双(三甲基硅基)乙炔作为两电子炔配体在第6组Carbonylmetal(0)配合物:光化学合成和M的全面表征(CO)5(η 2 -Me 3的SiC⋮CSiMe 3)(M = W,MO, CR)和反式-Mo(CO)4(η 2 -Me 3的SiC⋮CSiMe 3)2
    摘要:
    W(CO)的连续辐照6在过量二的存在(三甲基硅烷基)乙炔(btmse)在ñ -己烷溶液产率W(CO)5(η 2 -btmse)作为唯一产物,具有0.66和0.69的量子产率分别在λexc = 365和313 nm处。的Cr(CO)6周的行为类似,同时用的Mo(CO)6在最初被生成的Mo(CO)5(η 2 -btmse)经历进一步的CO替代,以形成反式-Mo(CO)4(η 2 -btmse)2作为第二个产品。所有四种化合物均以结晶形式分离,并通过元素分析,MS,IR和NMR光谱以及单晶X射线晶体学进行了全面表征。他们假设与炔三键的准八面体配位的几何形状被蚀至一个OC-M-CO轴,并在的情况下,反式-Mo(CO)4(η 2 -btmse)2,在反式-正交取向第二个炔烃。二者的Mo(CO)5(η 2 -btmse)和Cr(CO)5(η 2 -btmse)是不稳定的朝向由CO炔位移,而W(CO)5(η
    DOI:
    10.1021/om058016r
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文献信息

  • Sequential Photosubstitution of Carbon Monoxide by <i>(E)</i>-Cyclooctene in Hexacarbonyltungsten:  Structural Aspects, Multistep Photokinetics, and Quantum Yields
    作者:Friedrich-Wilhelm Grevels、Jürgen Jacke、Werner E. Klotzbücher、Franz Mark、Volker Skibbe、Kurt Schaffner、Klaus Angermund、Carl Krüger、Christian W. Lehmann、Saim Özkar
    DOI:10.1021/om990300t
    日期:1999.8.1
    from the photochemical reaction mixture, are conveniently accessible via alternative thermal ligand exchange routes. The molecular structures of 2 and 4a in the crystal were determined by X-ray diffraction techniques. The olefin double bonds, with trans-orthogonal arrangement in 4a, are eclipsed to a OC−W−CO axis in either case. The course of the conversion of 1 into the olefin-substituted products was
    W的光化学转化(CO)6(1)转换成反式-W(CO)4(η 2烯烃)2配合物使用已经研究了(E) -cyclooctene(ECO)作为烯烃具有非凡配位性能的模型。反式-W(CO)4(η 2 -eco)2(4)是作为两个非对映体(等摩尔混合物产生图4a,š 4对称;图4b,d 2对称性),可以通过分步结晶进行分离。整个反应顺序包括W(CO)中间体形成5(η 2 -eco)(2)和顺式-W(CO)4(η 2 -eco)2(3:2个非对映体,图3a和3b中,具有明显的C s和C 2对称)。配合物2和3尽管难以从光化学反应混合物中分离出来,但可通过替代的热配体交换途径方便地获得。的分子结构通过X射线衍射技术确定晶体中的2和4a。烯烃双键,具有反式中-正交排列4a中,都黯然失色到OC-W-CO轴线在任一情况下。通过定量IR光谱法监测1到烯烃取代的产物的转化过程。为此研究开发的光动力学方程式将所有四
  • Reaction of pentacarbonyl(η2-bis(trimethylsilyl)ethyne)tungsten(0) with tricyclohexylphosphine: X-ray structure of pentacarbonyltricyclohexylphosphinetungsten(0)
    作者:Oktay Demircan、Saim Özkar、Dinçer Ülkü、Leyla Tatar Yildirim
    DOI:10.1016/j.jorganchem.2003.08.032
    日期:2003.12
    is generated by further reaction of the CO substitution product, cis-W(CO)4(?2-btmse)(PCy3), with a second PCy3 molecule. The intermediate cis-W(CO)4(?2-btmse)(PCy3) complex could not be detected even in the solution. The cis-W(CO)4(PCy3)2 complex was observable, however, found to be instable and rapidly isomerizes to trans-W(CO)4(PCy3)2. The crystal and molecular structure of W(CO)5(PCy3) was determined
    五羰基(?2-双(三甲基甲硅烷基)乙炔)钨(0),W(CO)5(?2 -btmse)与三环己基膦PCy 3反应生成两种稳定的最终产物,可以通过分离和充分表征单晶X射线衍射和MS,IR和NMR光谱:W(CO)5(PCy 3)和反式-W(CO)4(PCy 3)2。前一种络合物是炔烃取代产物,而后者是由其不稳定的顺式异构体转化形成的,而后者是通过CO取代产物顺式的进一步反应生成的-W(CO)4(?2 -btmse)(PCY 3),与第二PCY 3分子。即使在溶液中也无法检测到中间体顺式-W(CO)4(?2 -btmse)(PCy 3)配合物。所述顺式-W(CO)4(PCY 3)2配合物可观察到的,但是,发现是不稳定的,迅速地异构化成反式-W(CO)4(PCY 3)2。确定了W(CO)5(PCy 3)的晶体和分子结构,并与W(CO)5(PCy 3)的晶体和分子结构进行了比较。反式-W(CO)4(PCy
  • Synthesis, characterization, and electrochemistry of tetracarbonyl(6-ferrocenyl-2,2′-bipyridine)tungsten(0)
    作者:Pelin Edinç、Ahmet M. Önal、Saim Özkar
    DOI:10.1016/j.jorganchem.2007.01.006
    日期:2007.4
    6-Ferrocenyl-2,2'-bipyridine (fcbpy) was prepared by the reaction of lithiated ferrocene with bipyridine and employed as a bidentate ligand for the formation of tetracarbonyl(6-ferrocenyl-2,2'-bipyridine)tungsten(0). The labile complex pentacarbonyl[eta(2)-bis(trimethylsilyl)ethyne]tungsten(0) reacts with fcbpy in CH2Cl2 to yield the disubstitution product, W(CO)(4)(fcbpy), which was isolated as analytically pure substance and characterized by elemental analysis, IR, UV-Vis, MS, H-1 and C-13 NMR spectroscopies. Electrochemistry of the fcbpy molecule and its Complex W(CO)(4)(fcbpy) was studied by cyclic voltammetry and controlled potential electrolysis combined with UV-Vis spectrometer. In the cyclic voltammogram of both the fcbyp molecule and its complex, an irreversible reduction and a reversible oxidation are assigned to the bipyridine and ferrocene moieties, respectively. The W(CO)(4)(fcbpy) complex exhibits additionally two irreversible oxidations due to the tungsten centered electron transfer reactions. (c) 2007 Elsevier B.V. All rights reserved.
  • Substitution kinetics of W(CO)5(η2-bis(trimethylsilyl)ethyne) with triphenylbismuthine
    作者:Ercan Bayram、Saim Özkar
    DOI:10.1016/j.jorganchem.2006.03.036
    日期:2006.7
    The labile complex W(CO)(5)(eta(2)-btmse) undergoes replacement of bis(trimethylsilyl)ethyne, btmse, by triphenylbismuthine in cyclohexane solution at an observable rate in the temperature range of 35-50 degrees C yielding almost solely W(CO)(5)(BiPh3) as the final product. The kinetics of this substitution reaction was studied in cyclohexane solution by quantitative FT-IR spectroscopy. The substitution reaction obeys a pseudo-first-order kinetics with respect to the concentration of the starting complex. The observed rate constant, k(obs), was determined at four different temperatures and three different concentrations of the entering ligand BiPh3 in the range 16.8-65.4 mM. From the evaluation of kinetic data a possible reaction mechanism was proposed in which the rate determining step is the cleavage of metal-alkyne bond in the complex W(CO)(5)(eta(2)-btmse). A rate law was derived from the proposed mechanism. From the dependence of kobs on the entering ligand concentration, the rate constant k(1) for the rate determining step was estimated at all temperatures. The activation enthalpy (106 +/- 2 kJ mol(-1)) and the activation entropy (111 +/- 6 J K-1 mol(-1)) were determined for this rate determining step from the evaluation of k(1) values at different temperatures. The large positive value of the activation entropy is consistent with the dissociative nature of reaction. The large value of the activation enthalpy, close to the calculated tungsten-alkyne bond dissociation energy, also supports this dissociative rate-determining step of the substitution reaction. (c) 2006 Elsevier B.V. All rights reserved.
  • Synthesis and electrochemistry of Group 6 tetracarbonyl (N,N′-bis(ferrocenylmethylene)ethylenediamine)metal(0) complexes
    作者:F. Sanem Koçak、Cüneyt Kavakli、Ceyhun Akyol、Ahmet M. Önal、Saim Özkar
    DOI:10.1016/j.jorganchem.2006.08.079
    日期:2006.11
    substitution reaction of Cr(CO)4(η2:2-1,5-cyclooctadiene), Mo(CO)4(η2:2-norbornadiene), and W(CO)5(η2-bis(trimethylsilyl)ethyne) with N,N′-bis(ferrocenylmethylene)ethylenediamine (bfeda) yields M(CO)4(bfeda) complexes which could be isolated from the reaction solution and characterized by elemental analysis, MS, IR, and NMR spectroscopy. In the case of tungsten, W(CO)5(bfeda) is formed as intermediate
    的Cr(CO)的热取代反应4(η 2:2 -1,5-环辛二烯),钼(CO)4(η 2:2 -norbornadiene)和W(CO)5(η 2 -双(三甲基硅烷基)乙炔与N,N'-双(二茂铁基亚甲基)乙二胺(bfeda)生成M(CO)4(bfeda)配合物,可从反应溶液中分离并通过元素分析,MS,IR和NMR光谱表征。在钨的情况下,形成W(CO)5(bfeda)作为中间体,然后进行闭环反应,得到最终产物W(CO)4(bfeda)。M(CO)4的电化学行为通过使用四氟硼酸四丁铵在二氯甲烷中的循环伏安法(CV)和微分脉冲伏安法(DPV)研究了bfeda配合物。在其CH 2 Cl 2溶液中,在0°C时于其峰值电位连续进行络合物的恒电位电解,然后电解,每5 mC原位记录电子吸收光谱。在Cr(CO)4(bfeda)的电解中,首先氧化中心Cr(0),然后电解过程继续氧化两个二茂铁基,直到每摩尔络合物总
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