| 137355-23-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• CAS: 137355-23-8
• 化学式: BF₄*C₃₅H₂₅BrN₅Ru
• 分子量: 783.396
• InChiKey: HXABVYPOZYZHFP-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  silver tetrafluoroborate 、 trans-{RuBr2(C6H5CN)4} 、 苯甲腈 以 苯甲腈 为溶剂， 以85-90的产率得到
  参考文献：
  名称：

  From [RuX₆] to [Ru(RCN)₆]: synthesis of mixed halide–nitrile complexes of ruthenium, and their spectroelectrochemical characterization in multiple oxidation states

  摘要：

  A complete series of benzonitrile- and acetonitrile-substituted ruthenium halide complexes [RuX6-n(RCN)n]z (n = 0-6), ranging stepwise from [RuX6]2- to [Ru(RCN)6]2+, has been prepared and characterized. Three series were established, having RCN/X = PhCN/Cl, PhCN/Br, and MeCN/Cl. The strategy of reductive substitution has been developed to prepare [RuX5(RCN)]2-, trans-[RuX4(RCN)2]-, mer-[RuX3(RCN)3] and trans-[RuX2(RCN)4] in turn from [RuX6]2- by systematic electrosynthetic routes, through detailed management of potential, temperature and RCN concentration. The monosubstituted pentahalogeno complexes are unstable and their preparation is only practicable via electrode-induced (Ru(IV) --> Ru(III)) halide displacement from [RuX6]2- at low temperature. At the divalent level, exhaustive substitution to form [RuX(RCN)5]+ and [Ru(RCN)6]2+ from [RuX2(RCN)4] required more forcing chemical conditions (Ag+ and CF3SO3H respectively). Voltammetric studies between -65 and 20-degrees-C confirm that the family of mixed halide-nitrile monomeric complexes is rich in redox chemistry, spanning oxidation states V to II. Under reversible conditions, the various metal-based electrode potentials for [RuX6-n(RCN)n]z are a linear function of the stoichiometry parameter, n, increasing by 0.45 Ru(V)-Ru(IV)) or 0.6 V (Ru(IV)-Ru(III) and Ru(III)-Ru(II)) per halide replace by nitrile. By use of spectroelectrogeneration techniques, the optical charge-transfer spectra for every available member of each family have been recorded in multiple oxidation levels, defining the states Ru(IV) for n = 0-2, Ru(III) for n = 0-5 and Ru(II) for n = 2-6. For the present complexes, there are unmistakable complementary progressions in the halide-to-metal (X --> Ru(III)) and metal-to-ligand (Ru(II) --> RCN) bands, in accord with the underlying trend in E1/2(Ru(III)-Ru(II)). These measurements present an unusual opportunity to document and analyse the characteristic trends in appearance and location of both ligand-to-metal (Ru(III)) and metal-to-ligand (Ru(II)) charge-transfer manifolds as a function of stoichiometry.

  DOI：

  10.1039/dt9910002401