From: Synthesis, characterization, and antibacterial studies of pipemidic acid metal complexes
Drug complexed | Colour | Conductance μs/cm | M.P °C | Change in ε (λmax) | |
---|---|---|---|---|---|
Ref. drug | Pale yellow | 57.1 | 252 | 39160 (274) | 12269 (314) |
 |  |  |  | 11575 (330) |  |
Magnesium | Light brown | 97.9 | 280d | 36504 (276) | 11393 (316) |
Calcium | Off white | 98.3 | 278d | 35078 (276) | 11256 (317) |
Chromium | Greenish brown | 109.1 | 282d | 26197 (283) | 10998 (335) |
Manganese | Light yellow | 90.9 | 274d | 37687 (277) | 11791 (316) |
Iron | Orange | 89.4 | 220d | 31315 (276) | 10136 (317) |
Cobalt | Light blue | 114.8 | 272d | 29710 (277) | 9265 (316) |
Nickel | Greenish white | 94.6 | 288d | 49675 (277) | 15810 (316) |
Copper | Brown | 118.7 | 230 | 39111 (277) | 12143 (317) |
Zinc | Off white | 128 | 278d | 38184 (277) | 11952 (316) |
Cadmium | White | 111.2 | 266 | 33347 (277) | 10677 (316) |