Nonstoichiometric, Protic Azolium Azolate Ionic Liquids Provide Unique Environments for N-Donor Coordination Chemistry

作者：Kelley Steven P; Nuss Joseph S; Rogers Robin D^*

来源：Chemistry - A European Journal, 2015, 21(48): 17196-17199.

DOI：10.1002/chem.201503914

• copper
• crystal engineering
• ionic liquids
• N ligands
• zinc

Here we demonstrate that neat reactions of amphoteric azoles with more basic azoles give a family of finely tunable, nonstoichiometric liquids which are useful for N-donor coordination chemistry. Reacting 4,5-dicyano-imidazole (4,5-DCNIm) with 1-methylimidazole (1-mim) gives new compounds with composition-dependent speciation. Two crystalline compounds, a 1: 1 protic salt, [H(1-mim)][4,5-DCNIm], and a 1:2 salt co-crystal, [H(1-mim)][4,5-DCNIm]center dot 4,5-DCNIm, were isolated and structurally characterized, while differential scanning calorimetry revealed both suppression of crystallization and the presence of neutral and anionic species in the melt. Reactions of Cu(NO3)(2)center dot 2.5H(2)O, CuO, and ZnO with the neat 2:1 1-mim/4,5-DCNIm melt resulted in the isolation of entirely N-donor ligated complexes of the formula M(4,5-DCNIm)(2)(1-mim) 4 (M=Cu, Zn).

• 出版日期2015-11-23
• 单位McGill