丙二胺18冠6醚包合物的合成、晶体结构及介电性质(英文)

Synthesis,Crystal Structure and Dielectric Property of Clathrate Based on 18-Crown-6 with Biprotonated 1,3-Propane-diamine

丙二胺盐酸盐,18冠6醚和三价的氯化铁在甲醇溶液中反应,产生了1个新的超分子包合物,[(C3N2H12).(18-Crown-6)2][Fe2OCl6](1)。双质子化的丙二胺包含2个-NH3+取代基团,阳离子-NH3+基团和冠醚的氧原子间通过N-H…O氢键作用,形成了1个三明治式的超分子结构。化合物1的介电常数分别在不同温度和频率下进行了测量,结果表明没有出现介电异样,也就是说,在测量温度范围内,1应该没有结构相变发生。

The reaction of 1,3-propane-diamine hydrochloride,18-crown-6 and trivalent ferric chloride in methanol solution yields an unusual supramolecular clathrate,18-crown-6 and 1,3-propane-diaminium（μ2-oxo）-hexachloro-di-iron（Ⅲ））clathrate,[（C3N2H12）·（18-Crown-6）2][Fe2OCl6]（1）.The biprotonated 1,3-propane-diaminium cation contains two-NH3^＋ ammonium cations,resulting in a sandwich-type [（C3N2H12）2＋·（18-crown-6）2] supramolecular structure,through N-H…O hydrogen bonding interactions within the crystals between the ammonium moieties of cations（-NH3^＋）and the oxygen atoms of the crown ethers.Dielectric constants of compound 1 were measured at different temperatures and frequencies,showing there is no distinct dielectric anomaly occurred in this case and suggesting that there may be no phase transition within the measured temperature range.CCDC：772928.