| 摘要 |
There are disclosed compounds having the formula <IMAGE> wherein R and R' are selected from the group consisting of (a) substituents having the formula R1R2R3C-wherein R1 is H or an alkyl group of 1 to 6 carbon atoms, and R2 and R3 are independently alkyl of 1 to 6 carbon atoms; (b) phenyl group; (c) phenyl group substituted by Br, Cl, F, alkyl group of 1 to 10 carbon atoms, or alkoxy group of 1 to 10 carbon atoms; and (d) an adamantyl group; and M is As or Sb; with the proviso that when R and R' are phenyl or substituted phenyl in which the substituents are in meta or para positions, M is As. Preferably R and R' are the same and are t-butyl, phenyl or adamantyl. The compounds display thermochromic properties.
|
