hexaureachromium(III) chloride chromate | 1415918-17-0

• 分子结构分类: 有机化合物
• 英文名称: hexaureachromium(III) chloride chromate
• 英文别名: [Cr(CO(NH₂)₂)₆]Cl*CrO₄
• CAS: 1415918-17-0
• 化学式: C₆H₂₄CrN₁₂O₆*Cl*CrO₄
• 分子量: 563.776
• InChiKey: IDTOVFBUTFCNJO-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  potassium chromate 、 [Cr(urea)6]Cl3*3H2O 以 水 为溶剂， 反应 0.08h， 以86%的产率得到hexaureachromium(III) chloride chromate
  参考文献：
  名称：

  A hexaureachromium(III) complex as a molecular receptor for oxoanions

  摘要：

  The hourglass shaped molecular receptor, [Cr(CO(NH2)(2))(6)](3+) has been recognized and its binding properties with oxoanions (Cr2O74- and CrO42-) were studied. Binding constants with different potassium salts of oxoanions were determined by standard UV-vis titration techniques in aqueous medium. According to the titration data, receptor containing six urea molecules exhibits high affinity (log K = 3.7-3.8) for oxoanions in the presence of Cl-. The UV-vis spectroscopic titration data were found to fit well to a 2:3 binding model for the interactions between the receptor and Cr2O72- and 1:2 for receptor and CrO42-. The newly synthesized receptor-anion complexes were also characterized by elemental analyses and IR spectroscopy. Single crystal X-ray study of [Cr(CO(NH2)(2))(6)](2)(Cr2O7)(3) reveals the structure with a honeycomb-like pattern, consisting of columns of coordination cations, running parallel to c axis, being surrounded by a "cylinder" of oxoanions. The structure is stabilized by strong charge assisted (HNH center dot center dot center dot OCr) intermolecular hydrogen bonds (CAHB) between cations and anions and intramolecular (CO center dot center dot center dot HNH) hydrogen bonds within cations. (C) 2012 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molstruc.2012.09.080