The present application provides a use of a mixture comprising less than 75 vol.% of an organic solvent and more than 25 vol.% of water in a preparation of a fac-isomei of a tris homoleptic metal complex, in the presence or the absence of an added salt, and with the proviso that when an added salt contains at least two oxygen atoms, it is used in an amount such that the molar ratio of the salt to the metal in a metal compound used as starting material is less than 1. The present application also provides a method of preparing a fac-isomer for a tris homoleptic metal complex using the mixture.
本发明提供了一种使用混合物的用途,该混合物包含不到75体积%的有机溶剂和超过25体积%的
水,在存在或不存在添加的盐的情况下,但是当添加的盐含有至少两个氧原子时,使用的量应使得盐与作为起始材料的
金属化合物中的
金属的摩尔比小于1,以制备三元同系
金属配合物的fac异构体。本发明还提供了一种使用该混合物制备三元同系
金属配合物的fac异构体的方法。