| # | Species | Formula |
| 4985 | Technetium(III) trichloride (Geo) | Cl3Tc | |
| 4986 | Technetium(III) trichloride | Cl3Tc | |
| 4987 | Tc(III)N3Cl3 (JEVMAY) (Geo) | C18H21N3Cl3Tc | |
| 4988 | Tc(III)N3Cl3 (JEVMAY) | C18H21N3Cl3Tc | |
| 4989 | Technetium(II) tetrachloride 6A1 | Cl4Tc | |
| 4990 | Tc(V)Cl4O(-) (VAVVAP01) (Geo) | OCl4Tc | |
| 4991 | Tc(V)Cl4O(-) (VAVVAP01) | OCl4Tc | |
| 4992 | Tc(IV)Cl4P2 (LALGUA) (Geo) | C6H18P2Cl4Tc | |
| 4993 | Tc(IV)S2Cl4 (WAJFOD) (Geo) | C8H16S2Cl4Tc | |
| 4994 | Tc(IV)S2Cl4 (WAJFOD) | C8H16S2Cl4Tc | |
| 4995 | Tc(IV)Cl6(2-) (CIMFEJ) (Geo) | Cl6Tc | |
| 4996 | Tc(IV)Cl6(2-) (CIMFEJ) | Cl6Tc | |
| 4997 | Technetium(I) bromide (Geo) | BrTc | |
| 4998 | Technetium(I) bromide | BrTc | |
| 4999 | Technetium(III) oxide bromide (Geo) | OBrTc | |
| 5000 | Technetium(III) oxide bromide | OBrTc | |
| 5001 | Tc(CO)5Br | C5O5BrTc | |
| 5002 | Tc(CO)5Br (Geo) | C5O5BrTc | |
| 5003 | Technetium(III) tribromide (Geo) | Br3Tc | |
| 5004 | Technetium(III) tribromide | Br3Tc | |
| 5005 | Tc(VI)NBr4(-) (DANNIP) (Geo) | NBr4Tc | |