# Species Formula 4018 Arsenic pentachloride (Geo)Cl5As 4019 Arsenic, dimerAs2 4020 AsAsC (ARSMET) (Geo)C2H6As2 4021 AsAsC (ARSMET)C2H6As2 4022 As(V)F4O2(2-) (PYDFAS) (Geo)O2F8As2 4023 As(V)F4O2(2-) (PYDFAS)O2F8As2 4024 As(III)2C4 (HIRCIU) (Geo)C4F12As2 4025 As(III)2C4 (HIRCIU)C4F12As2 4026 As(V)(III)C4S2 (DMSARS) (Geo)C4H12S2As2 4027 As(V)(III)C4S2 (DMSARS)C4H12S2As2 4028 Ti(IV)Cp2F2 (VAJXEJ) (Geo) C10H10F12TiAs2 4029 Ti(IV)As2S2Cl2 (CIRHUG) (Geo)C18H34S2Cl2TiAs2 4030 Arsenic, trimerAs3 4031 As(III)S2C (MARSTA) (Geo)C5H9S3As3 4032 As(III)S2C (MARSTA)C5H9S3As3 4033 Arsenic, tetramerAs4 4034 As(III)O2C (ASOXAD) (Geo)C2H4O4As4 4035 As(III)O2C (ASOXAD)C2H4O4As4 4036 Arsenic trioxide dimerO6As4 4037 As4O6O6As4 4038 As4O6 (Geo)O6As4