Ionic liquids have been prepared from simple metallocenium cations and bis(trifluoromethanesulfonyl)amide anion (TFSA). Their properties were tunable by the choice of metals and substituents; the ferrocenium salts were deep-blue paramagnetic liquids, which are readily prepared by a one-step solventless reaction, and the cobaltocenium salts were orange diamagnetic liquids.
                                    离子液体是由简单的
金属阳离子和双(
三氟甲烷磺酰)胺阴离子(TF
SA)制备的。它们的性质可以通过选择
金属和取代基来调节;
铁仿阳离子盐是深蓝色的顺磁性液体,可以通过一步无溶剂反应方便地制备,而
钴仿阳离子盐则是橙色的抗磁性液体。