6,6,6-trichloro-6-isothiocyanatodecahydro-6H-6l⁶-[1,3,2]diazastannolo[1,5-a:3,4-a']dipyridine

6,6,6-tribromo-6-isothiocyanatodecahydro-6H-6l⁶-[1,3,2]diazastannolo[1,5-a:3,4-a']dipyridine

6,6-dibromo-6,6-diisothiocyanatodecahydro-6H-6l⁶-[1,3,2]diazastannolo[1,5-a:3,4-a']dipyridine

6,6'-二氰基-2,2'-联吡啶

2,2'-联吡啶-6,6'-二羧酸