A study has also been made of the preparation of arsenic compounds which contain an arsonic acid radical attached to one ring and a group such as the hydroxyl or amino attached to the other. Such compounds are of interest because of their analogy with the corresponding phenylarsonic acids.
![[4-(4-aminophenyl)phenyl]arsonic acid结构式](https://image.chemsrc.com/caspic/368/7145-96-2.png)