| # | Species | Formula |
| 3261 | Mn(II)(H2O)6 | H12O6Mn | |
| 3262 | Mn(H2O)6, 2+ion (Geo) | H12O6Mn | |
| 3263 | Manganese hexacarbonyl, cation | C6O6Mn | |
| 3264 | Manganese hexacarbonyl, cation (Geo) | C6O6Mn | |
| 3265 | Mn(CO)5COCH3 | C7H3O6Mn | |
| 3266 | Mn(CO)5(C6H5CO) | C12H5O6Mn | |
| 3267 | Mn(acac)3 | C15H21O6Mn | |
| 3268 | Mn(II)O4N2 (XOYHAU) (Geo) | C12H12N2O6Mn | |
| 3269 | Mn(III)EDTA(-) (EDTMNK01) (Geo) | C10H12N2O8Mn | |
| 3270 | Mn(III)EDTA(-) (EDTMNK01) | C10H12N2O8Mn | |
| 3271 | Mn(III)O6(-) (KAMMND) (Geo) | C6H8O10Mn | |
| 3272 | Mn(III)O6(-) (KAMMND) | C6H8O10Mn | |
| 3273 | Manganese(I) fluoride | FMn | |
| 3274 | Manganese(I) fluoride (Geo) | FMn | |
| 3275 | Manganese(IV) oxide difluoride (Geo) | OF2Mn | |
| 3276 | Mn(CO)5C (CDFVMN) (Geo) | HC7O5F2Mn | |
| 3277 | Mn(CO)5C (CDFVMN) | HC7O5F2Mn | |
| 3278 | Mn(CO)5CF3 | C6O5F3Mn | |
| 3279 | Mn(CO)5COCF3 | C7O6F3Mn | |
| 3280 | Mn(CO)4O (FACMNA) (Geo) | C7O7F3Mn | |
| 3281 | Mn(CO)4O (FACMNA) | C7O7F3Mn | |