| 669010-18-8

• CAS: 669010-18-8
• 化学式: Cl*CrH₁₅N₆O*F₆P
• 分子量: 347.572
• InChiKey: MBOXDRWTMDMISW-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  sodium hexaflorophosphate 、 nitrosylpentaamminechromium chloride 在 hydrochloric acid 作用下， 以 水 为溶剂， 以53.6%的产率得到
  参考文献：
  名称：

  Hydrogen bonding: further evidence for the cause of the color change of nitrosylpentaamminechromium (III) compounds. Crystal structures of [Cr(NO)(NH3)5](PF6)2 and [Cr(NO)(NH3)5]Cl(PF6)

  摘要：

  The crystal structures of [Cr(NO)(NH3)(5)](PF6)(2) (red) and [Cr(NO)(NH3)(5)]Cl(PF6) (brown) have been determined. The [Cr(NO)(NH3)(5)](2+) (A) complex cations in these compounds have a slightly distorted octahedral geometry with a strictly linear Cr-N-O arrangement (from symmetry). The short interatomic distances (2.399 Angstrom x 4) between the O (nitrosyl) and H (ammonia in adjacent complex cations) atoms in A(PF6)(2) indicate the existence of hydrogen bonds, while the interatomic distances (3.258 Angstrom x 8) between those in ACl(PF6) are much longer, and the hydrogen bonds should be weak in spite of the presence of the smaller counter anion of chloride ion in ACl(PF6). Comparisons of the five crystal structures of A(PF6)(2), ACl(2), ACl(ClO4), ACl(PF6), and A(ClO4)(2) have led to the conclusion that the existence of the strong hydrogen bonds gives red crystals of A(PF6)(2), while the absence of hydrogen bonds results in the formation of green crystals of A(ClO4)(2) ((OH)-H-..., 3.595 Angstrom x 2). The color change of the crystals (from red to green) with the change of outer sphere anions is attributed to the change of the strength of the hydrogen bonding between the complex cations. (C) 2003 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/s0020-1693(03)00447-x