中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 8-methoxy-2-(thiophen-2-yl)quinoline | 26351-57-5 | C14H11NOS | 241.313 |
The ligand 2-(2′-thienyl)-8-hydroxyquinoline has been synthesized and the solution stability of some of its metal chelates determined. The finding that log K1 < log K2 is attributed to strong steric interaction between the 2-substituent and coordinated water on addition of the first ligand. This interaction results in distortion toward tetrahedral geometry. Previously unexplained data for other 2-substituted 8-hydroxyquinolines have been interpreted in terms of this effect.