tungsten(VI) bromide | 13701-86-5

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属盐
• 英文名称: tungsten(VI) bromide
• 英文别名: tungsten hexabromide；tungsten(VI) iodide；hexabromotungsten
• CAS: 13701-86-5
• 化学式: Br₆W
• 分子量: 663.274
• InChiKey: OQVJXQJWYQNWTI-UHFFFAOYSA-H

物化性质

• 溶解度：
  与H2O反应
• 稳定性/保质期：
  六溴化钨WBr₆是一种蓝黑色光泽针状晶体，相对密度为6.9，熔点为232℃。它在潮湿空气中会水解，并能溶于二硫化碳、乙醚和酸中，不溶于冷水，在热水中则会分解。

计算性质

• 辛醇/水分配系数(LogP)：
  5.07
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

制备方法与用途

生产方法

制法：液溴或其蒸气与温热的钨粉反应，或在600℃下反应可生成WBr₆。另一种方法是将化学计量的溴与钨粉置于真空密封管中，在500～800℃下反应，会形成WBr₅与WBr₆。

反应信息

• 作为反应物：
  描述：

  tungsten(VI) bromide 在 磷化氢 作用下， 反应 0.5h， 生成 溴化钨(IV)
  参考文献：
  名称：

  Cluster Harvesting in the WBr₆–P System

  摘要：

  A combined thermal scanning-X-ray diffraction (XRD) approach was performed for the WBr6-P system to detect and analyze phases in this system, including metal-rich phases generated with increasing amounts of elemental (red) phosphorus under partial PBr3 release. Phases were characterized by powder XRD. A black crystalline powder of W-4(PBr)Br-10 was obtained after reduction of WBr6 with elemental phosphorus at 450 degrees C. The crystal structure of the new compound was found to be isotypic with the structure of W-4(PCl)Cl-10 on the basis of powder XRD data. The structure of W-4(PBr)Br-10 is represented by a cyclobutadiene-like tetranuclear tungsten cluster interconnected into a layered (W-4(mu(4)-PBr)Br6i)Br-8/2(a-a) arrangement via outer bromide ligands. The mu(4)-capping bromophosphinidene ligand was verified by solid-state magic-angle spinning P-31 NMR spectroscopy.

  DOI：

  10.1021/ic502333u
• 作为产物：
  描述：

  hexabromotungsten;dihydrobromide 生成 tungsten(VI) bromide
  参考文献：
  名称：

  NANDZE, MITIO;NISIMURA, YAMAXARU;VATANABEH, CACAO

  摘要：

  DOI：

文献信息

• The Crystal Structure of Bi2W6Br18 and a New Synthesis of W6Br12 
  作者：Markus Ströbele、H.-Jürgen Meyer

  DOI：10.1002/zaac.201000071

  日期：2010.9

  The new tungsten bromide cluster compound Bi2W6Br18 was synthesized by reacting tungsten hexabromide with bismuth metal in a silica tube at 350 °C. The structure of Bi2W6Br18 was refined by single crystal X-ray diffraction in the space group P21/c with unit cell dimensions of a = 981.8(2) pm, b = 1305.9(2) pm, c = 1256.8(2) pm and  = 101.81(2)°. The crystal structure is constructed from [(W6Br8i)Br6a]2-

  新的溴化钨簇化合物 Bi2W6Br18 是通过六溴化钨与金属铋在石英管中在 350°C 下反应合成的。Bi2W6Br18 的结构在空间群 P21/c 中通过单晶 X 射线衍射精制，晶胞尺寸为 a = 981.8(2) pm, b = 1305.9(2) pm, c = 1256.8(2) pm 和  = 101.81(2)°。晶体结构由 [(W6Br8i)Br6a]2- 阴离子构成，通过外部溴配体与 (BiBr2) 单元互连，其在 (BiBr2)2[(W6Br8)Br6] 中表现为阳离子。(BiBr2) 单位中 261.3(1) pm 和 265.9(2) pm 的短 Bi-Br 键合距离表明存在共价相互作用。热分解生成 W6Br12。
• Spectroscopic studies on matrix isolated tungsten chlorides and bromides
  作者：Alan K. Brisdon、Eric G. Hope、William Levason、J. Steven Ogden

  DOI：10.1039/dt9890000313

  日期：——

  pentachloride has been heated in high vacuum, and the vapour species isolated in inert matrices at ca. 12 K. Subsequent i.r. spectra showed intense features at 410 and 365 cm–1 which are assigned as the A2″ and E′ stretching modes respectively of monomeric D3h WCl5. Corresponding studies on the hexachloride showed that monomeric WCl6 could similarly be isolated, and for this species, the u.v.–visible spectrum

  五氯化钨已经在高真空下加热，蒸气种类在惰性基质中（大约）分离。12K。随后的红外光谱在410和365 cm –1处显示出强烈的特征，分别被指定为单体D 3 h WCl 5的A 2 ”和E'拉伸模式。对六氯化物的相应研究表明，可以类似地分离单体WCl 6，对于该物种，还获得了uv-可见光谱并进行了详细分析。典型stoicheiometry的溴化钨样品的蒸发WBR 5.3在基质IR光谱，得到一个新的光谱特征的CA。305 cm –1，分配给分子WBr 6。在更高的温度下，固态五溴化物的汽化导致在280和245 cm –1处出现谱带，这些谱带被指定为D 3 h WBr 5中的A 2 ”和E '拉伸模式。
• Combinatorial Screening of an In Situ Generated Library of Tungsten Oxyhalide and Imido Complexes for Olefin Metathesis
  作者：Duane R. Romer、Victor J. Sussman、Ken Burdett、Yu Chen、Kami J. Miller

  DOI：10.1021/co500087b

  日期：2014.10.13

  A series of substituted tungsten(VI) halides with general formula WECl4 (E = O or −NR (imido)) were screened via a high throughput study to identify potential new olefin metathesis catalysts. The tungsten species were treated with a series of aluminum alkyl activators and modifier ligands to generate active catalyst species in situ. Ring-opening metathesis polymerization (ROMP) of cyclooctene was used

  一系列通式为WECl 4的取代卤化钨（VI）通过高通量研究筛选了（E = O或-NR（亚氨基）），以确定潜在的新型烯烃复分解催化剂。用一系列烷基铝活化剂和改性剂配体处理钨物质，以原位产生活性催化剂物质。环辛烯的开环易位聚合反应（ROMP）用作初步筛选，以识别潜在的易位催化剂，对活性催化剂进行二次筛选，以评估其对极性官能团的耐受性。高通量运动的几种组合产生了用于环辛烯的ROMP的活性复分解催化剂。然而，在本研究中检查的催化剂均未显示出任何证据表明，通过次级环辛烯/乙酸丁酯筛选的结果确定了显着的极性官能团耐受性。
• Low-temperature preparation of tungsten halide clusters: Crystal structure of the adduct W5Br12 · SbBr3
  作者：M. Ströbele、H. -J. Meyer

  DOI：10.1134/s1070328412020078

  日期：2012.3

  crystal structure was determined by single-crystal X-ray diffraction analysis. The structure contains square-pyramidal tungsten clusters being linked into infinite [(W5Br i8 )Br a3 Br 2/a-a2 ] chains through shared W-Bra-a-W contacts of adjacent clusters. The structure of the adduct I can be viewed as an intercalation compound composed of double-layers of cluster chains alternating with mono-layers

  在250°C下，用元素锑还原WBr 6，从反应产物中分离出新化合物W 5 Br 12 ·SbBr 3（I）的单晶。通过单晶X射线衍射分析确定晶体结构。该结构包含通过共享的W-Br a-a连接到无限的[（W 5 Br i 8）Br a 3 Br 2 / aa 2 ]链的方锥体钨簇。 -W相邻群集的触点。加合物I的结构可以看作是由簇状链的双层与单层的SbBr 3分子交替组成的插层化合物。
• Synthesis and Characterisation of W ^VI Complexes of Phosphane Oxide Ligands, [WO ₂ X ₂ (OPR ₃ ) ₂ ] (X = F, Cl or Br; R = Me or Ph), and of the [MoO ₂ F ₂ (OPR ₃ ) ₂ ]
  作者：Martin F. Davis、William Levason、Raju Ratnani、Gillian Reid、Tim Rose、Michael Webster

  DOI：10.1002/ejic.200600823

  日期：2007.1

  complexes of dioxidotungstenVI, [WO2X2(OPR3)2] (X = Cl or Br, M = Ph or Me) have been prepared under anhydrous conditions from the reaction of WX6 with (Me3Si)2O in CH2Cl2, followed by addition of OPR3. Some diphosphane dioxide analogues have been made similarly, viz, [WO2X2(L-L)] L-L = Ph2P(O)(CH2)nP(O)Ph2 (n = 1 or 2), o-C6H4[P(O)Ph2]2}. The complexes have been characterised by elemental analysis, IR and

  二氧化钨 VI、[WO2X2(OPR3)2]（X = Cl 或 Br，M = Ph 或 Me）的氧化磷配合物已在无水条件下通过 WX6 与 (Me3Si)2O 在 CH2Cl2 中的反应制备，然后加入 OPR3 . 一些二氧化膦类似物也有类似的制备方法，即 [WO2X2(LL)] LL = Ph2P(O)(CH2)nP(O)Ph2 (n = 1 or 2), o-C6H4[P(O)Ph2] 2}。该配合物已通过元素分析、红外和核磁共振（1H 和 31P1H}）光谱表征，并确定了 [WO2Br2(OPPh3)2] 和 [WO2Cl2(OPMe3)2] 的结构，揭示了扭曲的六配位钨中心带有顺式-WO2 和反式-WX2 单元。二氟-二氧化配合物 [MO2F2(OPR3)2] (M = Mo 或 W) 和 [WO2F2(LL)] (LL = 2,2-联吡啶，1,10-菲咯啉)在 CH2Cl2 中与