五溴化铼 | 30937-53-2

• 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
• 中文名称: 五溴化铼
• 中文别名: 溴化铼(Ⅴ)
• 英文名称: rhenium(V) bromide
• 英文别名: Rhenium(V) bromide；pentabromorhenium
• CAS: 30937-53-2
• 化学式: Br₅Re
• 分子量: 585.727
• InChiKey: ZLWRQEWKBJCVFN-UHFFFAOYSA-I

物化性质

• 熔点：
  decomposes at 110℃ [LID94]
• 稳定性/保质期：
  早期报道显示，ReBr₅是一种深蓝色固体，在稍高于室温时熔化为蓝绿色液体，并且其蒸气也是蓝色的。但后来有报道称ReBr₅为深褐色的固体。在真空中于110℃下开始分解为ReBr₃。在295K时，磁矩为1.28BM；而在105K时为1.00BM，不遵守Curie-Weiss定律。ReBr₅容易水解生成ReO₂、HReO₄和HBr。

计算性质

• 辛醇/水分配系数(LogP)：
  4.23
• 重原子数：
  6
• 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

合成制备方法

较好的制法是使用ReF₆和BBr₃或PBr₃反应，或者用ReBr₃和Br₂反应。在650℃时，用氮气载带溴蒸气与铼反应的主要产物为ReBr₅。

反应信息

• 作为反应物：
  描述：

  五溴化铼 以 solid matrix 为溶剂， 生成 rhenium tribromide
  参考文献：
  名称：

  Matrix-isolation infrared and ultraviolet–visible studies on some transition-metal pentachlorides and pentabromides

  摘要：

  Samples of the solids NbCl5, NbBr5, TaCl5, TaBr5, ReCl5, ReBr5 and OsCl5 have been vaporised in vacuo, and the products characterised by mass spectrometry and IR and UV/VIS spectroscopy in low-temperature argon and nitrogen matrices. In particular it is shown that vaporisation of the d0 species leads to the production of simple monomers, which adopt a square-pyramidal shape in nitrogen and a variety of conformers in argon. Rhenium pentachloride vaporises as a monomer which exhibits D3h symmetry in both argon and nitrogen, but ReBr5 and OsCl5 decompose, the former to yield molecular Re3Br9.

  DOI：

  10.1039/dt9910003387

文献信息

• Die Kristallpackung in drei Modifikationen von PPh4[ReO(S4)2] und PPh4[ReS(S4)2]
  作者：Ulrich Müller、Andrea Noll

  DOI：10.1002/1521-3749(200012)626:12<2438::aid-zaac2438>3.0.co;2-i

  日期：2000.12
• A Solid-State Route to Molecular Clusters:  Access to the Solution Chemistry of [Re₆Q₈]²⁺ (Q = S, Se) Core-Containing Clusters via Dimensional Reduction
  作者：Jeffrey R. Long、Logan S. McCarty、R. H. Holm

  DOI：10.1021/ja960216u

  日期：1996.1.1

  A general method for accessing the solution chemistry of cluster constituents of solid phases exhibiting extended cluster frameworks is demonstrated. The approach is described in terms of simple metal-anion (M-X) frameworks and involves the formal incorporation of AX into a parent structure, resulting in termination of the X bridges between M centers while balancing the charge of the resulting framework with external cations A. The new structures obtained display frameworks of reduced connectedness and dimensionality. By replacing single metal centers with multinuclear cluster cores, this dimensional reduction approach is extended to cluster-containing frameworks. Its utility is demonstrated via application to the phases Re(6)Q(8)Cl(2) (Q = S, Se), exhibiting three- and two-dimensional arrays of face-capped octahedral [Re-6(mu(3)-Q)(8)](2+) cluster cores covalently linked through extremely tight Re(2)Q(2) rhombic interactions of the type common to many intractable cluster frameworks (including the Chevrel phases), Stoichiometric solid-state reactions incorporating TlCl supplement the cores with additional terminal ligands, producing less connected frameworks: two-dimensional [Re6Se8Cl3](1-) sheets, one-dimensional [Re(6)Q(8)Cl(4)](2-) chains, and ultimately, isolated [Re(6)Q(8)Cl(6)](4-) clusters. The connectivities for such [M(6)Q(8)] frameworks are enumerated; of the 28 possibilities, three previously unknown frameworks are achieved in the structures of TlRe6Se8Cl3, CsRe6Se8I3, and Cs2Re6Se8Br4, described herein. Alternatively, employing cesium halide as a dimensional reduction agent directly provides the unprecedented molecular clusters in water-soluble form as the phases Cs(5)Re(6)S(8)X(7) (X = Cl, Br), Cs6Re6S8I8, and Cs4Re6Se8I6. The species [Re(6)S(8)X(6)](4-) (X = Cl, Br, I) are precipitated from aqueous base upon addition of (Bu(4)N)X to give the soluble molecular products (BU4N)(4)[Re6S8Cl6], (BU4N)(4)[Re6S8Br6]. H2O, and (BU4N)(4)[Re6S8I6]. H2O. Treatment of yellow acetonitrile solutions of these compounds with anhydrous acid induces an immediate color change to red owing to the formation of the protonated clusters [Re6S7(SH)X(6)](3-). Reversible uptake of a single proton is confirmed by the single-crystal X-ray structure determinations of (BU4N)(3)[Re6S7(SH)Cl-6], (Bu(4)N)(3)[Re6S7(SH)Br-6]. 2Me(2)CO, and (Bu(4)N)(3)[Re6S7(SH)I-6]. 2Me(2)CO, as well as spectrophotometric titrations and elemental analyses. The pK(a) of [Re6S7(SH)Br-6](3-) in acetonitrile is estimated at 20. An analogous workup of red Cs4Re6Se8I6 affords (Bu(4)N)(3)[Re6Se7(SeH)I-6]. 2Me(2)CO.
• Matrix-isolation infrared and ultraviolet–visible studies on some transition-metal pentachlorides and pentabromides
  作者：Richard K. Bellingham、John T. Graham、Peter J. Jones、Julia R. Kirby、William Levason、J. Steven Ogden、Alan K. Brisdon、Eric G. Hope

  DOI：10.1039/dt9910003387

  日期：——

  Samples of the solids NbCl5, NbBr5, TaCl5, TaBr5, ReCl5, ReBr5 and OsCl5 have been vaporised in vacuo, and the products characterised by mass spectrometry and IR and UV/VIS spectroscopy in low-temperature argon and nitrogen matrices. In particular it is shown that vaporisation of the d0 species leads to the production of simple monomers, which adopt a square-pyramidal shape in nitrogen and a variety of conformers in argon. Rhenium pentachloride vaporises as a monomer which exhibits D3h symmetry in both argon and nitrogen, but ReBr5 and OsCl5 decompose, the former to yield molecular Re3Br9.