Table 1.
structure | abbreviated name |
mp, °C | pKa of cation |
appearance of a sample spot |
---|---|---|---|---|
DHB | 203 | 2.97 | crystalline solid | |
DHBB9 | 112–114 | 10.8 | glass film | |
CHCAB9 | 158–161 | 10.8 | crystalline solid | |
ImDHB | 120–122 | 6.95 | glass film | |
ImCHCA7 | 142–143 | 6.95 | glass film | |
PyCHCA7 | >227 | 5.25 | crystalline solid |