摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

niobium oxytribromide | 14459-75-7

中文名称
——
中文别名
——
英文名称
niobium oxytribromide
英文别名
——
niobium oxytribromide化学式
CAS
14459-75-7
化学式
Br3NbO
mdl
——
分子量
348.618
InChiKey
AVFNJDDLDRJSNL-UHFFFAOYSA-K
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

物化性质

  • 熔点:
    sublimes in vacuum at 180℃ [KIR81]
  • 沸点:
    decomposes at ~320℃ [KIR81]

计算性质

  • 辛醇/水分配系数(LogP):
    2.42
  • 重原子数:
    5.0
  • 可旋转键数:
    0.0
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    17.07
  • 氢给体数:
    0.0
  • 氢受体数:
    1.0

反应信息

  • 作为反应物:
    描述:
    niobium oxytribromide1,3-bis(2,6-dimethylphenyl)imidazol-2-ylidene三正丁基氢锡 作用下, 以 甲苯 为溶剂, 反应 22.0h, 以50%的产率得到
    参考文献:
    名称:
    氧化铌(IV)卤化物的配位化合物,包括NHC配合物的合成和晶体学表征
    摘要:
    NbOX 3与SnBu 3 H的1:1摩尔反应,在氧气/氮气供体存在下于0°C的甲苯中,导致形成NbOX 2 L 2(X = Cl,L 2 = dme,2a ; X = Br,L 2= dme,2b; X = Cl,L = thf,2c; X = Cl,L = NCMe,2d; dme = 1,2-二甲氧基乙烷,thf =四氢呋喃),收率良好。新鲜制备的2d和2b与庞大的NHC配体1,3-双(2,4,6-三甲基苯基)咪唑-2-亚烷基,Imes和1,3-双(2,6-二甲基苯基)的1:2反应)咪唑-2-亚基,己基分别提供了NbOCl复合物2(艾姆斯)2,3,和NbOBr 2(Ixyl)2,4,在50-60%的产率。2b与NaOR在四氢呋喃中的反应以约60%的收率得到NbOCl(OR)(R = Ph,5 ; R = Me,6)。所有产品均通过分析和光谱技术表征;此外,进行了DFT计算,以了解合成
    DOI:
    10.1021/acs.inorgchem.5b02888
  • 作为产物:
    描述:
    参考文献:
    名称:
    通过与铌和五卤化钽配位而促进的通过CO键断裂的含氧分子的断裂。
    摘要:
    新型mu-oxo配合物NbOX(3)[kappa(2)-O(Me)CH(2)CO(2)Me] NbX(5)(X = Cl,; X = Br,),NbOCl(3) [kappa(2)-(MeO(2)C)CH [双键,长度为m-破折号] CH(CO(2)Me)] NbCl(5)()和NbOCl(3)[kappa(2)- CH(2)(CO(2)Me)(2)] NbCl(5)()已通过卤化物NbX(5)(X = Cl,Br)与甲氧基甲基的摩尔比为1:1的反应以高收率制备乙酸盐[MeOCH(2)CO(2)Me],马来酸二甲酯[(MeO(2)C)CH [双键,长度为m-dash] CH(CO(2)Me)]和丙二酸二甲酯[CH(2 )(CO(2)Me)(2)],分别在不同的实验条件下进行。NMR研究表明,和的氧代单元通过选择性断裂(CO键断裂)形成一半当量的有机材料。离子络合物[NbX(4){OO}(2)]
    DOI:
    10.1039/b905023j
点击查看最新优质反应信息

文献信息

  • On Oxohalogeno Niobates(V)M2[Nb3O5X7] (M = NH4, K, Rb, Cs;X = Cl, Br) – New Members of a Compound Family with a Layered Structure
    作者:Johannes Beck、Jairo Bordinhão、Christian Kusterer
    DOI:10.1002/zaac.200600382
    日期:2007.5
    = 13.467(2); b = 7.9362(8); c = 14.041(2) A) and K2[NbOCl5] (F centred cubic lattice, a = 9.8291(2) A). To a small amount vapour phase transport occurs and colourless crystals of M2[Nb3O5Cl7] (M = K, Rb, Cs) are deposited in the colder parts of evacuated glass tubes containing molten mixtures of MCl and NbOCl3 or MCl, Nb2O5 and NbCl5 in a temperature gradient of 500 °C to 450 °C for some days. Green
    化物 MCl 与 NbOCl3 反应生成熔体,冷却后结晶固化。在 KCl / NbOCl3 的情况下,粉红色的规则通过粉末 XRD 进行研究并显示为双相,由 K [NbOCl4](原始正交晶格,a = 13.467 (2); b = 7.9362 (8); c = 14.041 (2) A) 和 K2 [NbOCl5](F 中心立方晶格,a = 9.8291 (2) A)。发生少量气相传输,M2 [Nb3O5Cl7](M = K、Rb、Cs)的无色晶体沉积在含有 MCl 和 NbOCl3 或 MCl、Nb2O5 和 NbC​​l5 熔融混合物的真空玻璃管的较冷部分几天的温度梯度从 500 °C 到 450 °C。(NH4) 2 [Nb3O5Br7] 的绿色晶体是 NH4Br 与 NbOBr3 在密封安瓿中在 300°C 的温度下反应的副产物。所有化合物都是同型的,属于 M2 [Nb3O5X7]
  • Chalcogenide-Halides of Niobium (V). 1. Gas-Phase Structures of NbOBr<sub>3</sub>, NbSBr<sub>3</sub>, and NbSCl<sub>3</sub>. 2. Matrix Infrared Spectra and Vibrational Force Fields of NbOBr<sub>3</sub>, NbSBr<sub>3</sub>, NbSCl<sub>3</sub>, and NbOCl<sub>3</sub>
    作者:Izabela Nowak、Elizabeth M. Page、David A. Rice、Alan D. Richardson、Richard J. French、Kenneth Hedberg、J. Steven Ogden
    DOI:10.1021/ic020405f
    日期:2003.2.24
    The molecular structures of NbOBr3, NbSCl3, and NbSBr3 have been determined by gas-phase electron diffraction (GED) at nozzle-tip temperatures of 250 degreesC, taking into account the possible presence of NbOCl3 as a contaminant in the NbSCl3 sample and NbOBr3 in the NbSBr3 sample. The experimental data are consistent with trigonal-pyramidal molecules having C-3v symmetry. Infrared spectra of molecules trapped in argon or nitrogen matrices were recorded and exhibit the characteristic fundamental stretching modes for C-3v species. Well resolved isotopic fine structure (Cl-35 and Cl-37) was observed for NbSCl3, and for NbOCl3 which occurred as an impurity in the NbSCl3 spectra. Quantum mechanical calculations of the structures and vibrational frequencies of the four YNbX3 molecules (Y = O, S; X = Cl, Br) were carried out at several levels of theory, most importantly B3LYP DFT with either the Stuttgart RSC ECP or Hay-Wadt (n + 1) ECP VDZ basis set for Nb and the 6-311 G* basis set for the nonmetal atoms. Theoretical values for the bond lengths are 0.01-0.04 Angstrom longer than the experimental ones of type r(a), in accord with general experience, but the bond angles with theoretical minus experimental differences of only 1.0-1.5degrees are notably accurate. Symmetrized force fields were also calculated. The experimental bond lengths (r(g)/Angstrom) and angles (angle(alpha)/deg) with estimated 2sigma uncertainties from GED are as follows. NbOBr3: r(Nb=O) = 1.694(7), r(Nb-Br) = 2.429(2), angle(O=Nb-Br) = 107.3(5), angle(Br-Nb-Br) = 111.5(5). NbSBr3: r(Nb=S) = 2.134(10), r(Nb-Br) = 2.408(4), angle(S=Nb-Br) = 106.6(7), angle(Br-Nb-Br) = 112.2(6). NbSCl3: Nb=S) = 2.120(10), r(Nb-Cl) = 2.271(6), angle(S=Nb-Cl) = 107.8(12), angle(Cl-Nb-Cl) = 111.1(11).
  • Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Nb: MVol.B1, 112, page 240 - 242
    作者:
    DOI:——
    日期:——
  • Gingl, Franz; Straehle, Joachim, Zeitschrift fur Naturforschung, B: Chemical Sciences, 1989, vol. 44, # 2, p. 110 - 116
    作者:Gingl, Franz、Straehle, Joachim
    DOI:——
    日期:——
  • Schaefer, H., Chemische Transportreaktionen, Weinheim/Bergstr. 1962, S. 108/10
    作者:Schaefer, H.
    DOI:——
    日期:——
查看更多