| # | Species | Formula | 
  | 6502 | Lanthanum complex, CCDC: QAPXAG (Geo) | C48H36N6O14La2 |  | 
  | 6503 | Lanthanum complex, CCDC: TEQBIA (Geo) | C18H14O16La2 |  | 
  | 6504 | Lanthanum complex, CCDC: YIVZIM (Geo) | C12H44N4O16La2 |  | 
  | 6505 | Lanthanum complex, CCDC: ALANIC (Geo) | C36H32N6O16La2 |  | 
  | 6506 | Lanthanum complex, CCDC: CUMCES (Geo) | C16H28O18La2 |  | 
  | 6507 | Lanthanum complex, CCDC: HETALA11 (Geo) | C20H38N4O18La2 |  | 
  | 6508 | Lanthanum complex, CCDC: ZEQVUM (Geo) | C42H40N6O20La2 |  | 
  | 6509 | Lanthanum complex, CCDC: SUZXIU (Geo) | C74H70N4O24La2 |  | 
  | 6510 | bis((mu-2-Fluorido)-(h5-1,3-bis(trimethylsilyl)-cyclopentadienyl)-lanthanum(iii) (Geo) | C44H84F2Si8La2 |  | 
  | 6511 | Dilanthanum heptachloride, anion | Cl7La2 |  | 
  | 6512 | Dilanthanum heptachloride (Geo) | Cl7La2 |  | 
  | 6513 | Lanthanum complex, CCDC: ZEWYOP (Geo) | C32H20N4O14Cl18La2 |  | 
  | 6514 | Cerium complex, CCDC: XONYAA (Geo) | C45H33N9Ce |  | 
  | 6515 | Cerium complex, CCDC: GIFCUT (Geo) | C23H27B2N12O2Ce |  | 
  | 6516 | Cerium complex, CCDC: GIFCUT10 (Geo) | C23H27B2N12O2Ce |  | 
  | 6517 | Cerium complex, CCDC: MIPTAG (Geo) | C27H27N4O3Ce |  | 
  | 6518 | Cerium complex, CCDC: GACJIE (Geo) | C39H51N4O3Ce |  | 
  | 6519 | Cerium complex, CCDC: APSBCE (Geo) | C22H30N14O4Ce |  | 
  | 6520 | Cerium complex, CCDC: PEKWEH (Geo) | C27H11N2O6Ce |  | 
  | 6521 | Cerium complex, CCDC: LIFHUD (Geo) | C38H26N12O6Ce |  | 
  | 6522 | Cerium complex, CCDC: FILKEQ (Geo) | C22H28N8O7Ce |  |