# Species Formula 2641 HexachloroethaneC2Cl6 2642 Hexachlorobenzene (Geo)C6Cl6 2643 HexachlorobenzeneC6Cl6 2644 gamma HexachlorocyclohexaneC6H6Cl6 2645 Al2Cl6 (Geo)Al2Cl6 2646 Aluminum trichloride dimerAl2Cl6 2647 HexachlorodisilaneSi2Cl6 2648 Hexachloro-1,3,5,2,4,6-triazatriphosphorineN3P3Cl6 2649 Sulfur hexachloride (Geo)SCl6 2650 Sulfur hexachlorideSCl6 2651 Si2Cl6C2 (FAZKUM) (Geo) C2Si2Cl8 2652 Si2Cl6C2 (FAZKUM)C2Si2Cl8 2653 Argon, atomAr 2654 Argon lithium cation (Geo)LiAr 2655 Argon fluoride anion (Geo)FAr 2656 Potassium, cationK 2657 Potassium, atomK 2658 Potassium hydride (Geo)HK 2659 Potassium hydrideHK 2660 Helium potassium cation (Geo)HeK 2661 Potassium methyl (Geo)CH3K