| # | Species | Formula |
| 6489 | Lanthanum(I) iodide (Geo) | ILa | |
| 6490 | La(III)(Cp)2O2I (WELPAE) (Geo) | C16H22O2ILa | |
| 6491 | La(III)(Cp)2O2I (WELPAE) | C16H22O2ILa | |
| 6492 | La(III)O4I3 (RONMEM) (Geo) | C16H32O4I3La | |
| 6493 | Lanthanum(III) tetraiodide (Geo) | I4La | |
| 6494 | Lanthanum(III) tetraiodide | I4La | |
| 6495 | Lanthanum(III) hexaiodide (Geo) | I6La | |
| 6496 | Lanthanum(III) hexaiodide | I6La | |
| 6497 | Lanthanum, dimer (Geo) | La2 | |
| 6498 | Lanthanum, dimer | La2 | |
| 6499 | Lanthanum complex, CCDC: EBEGOH (Geo) | C48H46N4O12La2 | |
| 6500 | Lanthanum complex, CCDC: PUWZIQ (Geo) | C54H58N4O12La2 | |
| 6501 | Lanthanum complex, CCDC: HUFQOO (Geo) | C66H46N4O12La2 | |
| 6502 | Lanthanum complex, CCDC: TEQBOG (Geo) | C38H26N4O14La2 | |
| 6503 | Lanthanum complex, CCDC: QAPXAG (Geo) | C48H36N6O14La2 | |
| 6504 | Lanthanum complex, CCDC: TEQBIA (Geo) | C18H14O16La2 | |
| 6505 | Lanthanum complex, CCDC: YIVZIM (Geo) | C12H44N4O16La2 | |
| 6506 | Lanthanum complex, CCDC: ALANIC (Geo) | C36H32N6O16La2 | |
| 6507 | Lanthanum complex, CCDC: CUMCES (Geo) | C16H28O18La2 | |
| 6508 | Lanthanum complex, CCDC: HETALA11 (Geo) | C20H38N4O18La2 | |
| 6509 | Lanthanum complex, CCDC: ZEQVUM (Geo) | C42H40N6O20La2 | |