| 308323-11-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• CAS: 308323-11-7
• 化学式: C₁₀H₈AgN₂O*ClO₄
• 分子量: 379.505
• InChiKey: KKQSBBOBPDQOGJ-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为产物：
  描述：

  3,3'-oxybis(pyridine) 以 甲醇 、 水 为溶剂， 生成
  参考文献：
  名称：

  Smart Molecular Helical Springs as Tunable Receptors

  摘要：

  The rational construction and operation of an ideal helical spring has been investigated. The infinite helices, [Ag(Py2O)]X (Py2O = 3,3'-oxybispyridine; X- = NO3-, BF4-, ClO4-, and PF6-), have been constructed in high yield via cooperative effects of the skewed conformer of Py2O and the potential linear geometry of the N-Ag(I)-N bond. Crystallographic characterization reveals that the polymer framework is an ideal cationic cylindrical helix and that its counteranions are pinched in two columns inside the helix. The four anions have been exchanged fur each other in an aqueous solution without destruction of the helical skeleton. In particular; [Ag(Py2O)]NO3 prepared by the counteranion exchange can be isolated as crystals suitable for X-ray crystallography in water. The helical pitch is reversibly stretched via the counteranion exchange from 7.430(2) to 9.621(2) Angstrom, and is exactly proportional to the volume of the anion guests. This pitch-tuning is attributed to subtle change in the nonrigid dihedral angles between two pyridyl groups around O and Ag atoms that act as hinges within the helical subunit. Thermal analyses indicate that the helical compounds are stable up to 231-332 degreesC in the solid state.

  DOI：

  10.1021/ja001618b