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  2. Arsenic compounds - Wikipedia

    en.wikipedia.org/wiki/Arsenic_compounds

    Arsenic trioxide powder.. Compounds of arsenic resemble in some respects those of phosphorus which occupies the same group (column) of the periodic table.The most common oxidation states for arsenic are: −3 in the arsenides, which are alloy-like intermetallic compounds, +3 in the arsenites, and +5 in the arsenates and most organoarsenic compounds.

  3. Arsenate - Wikipedia

    en.wikipedia.org/wiki/Arsenate

    Bonding in arsenate consists of a central arsenic atom, with oxidation state +5, double bonded to one oxygen atom and single bonded to a further three oxygen atoms. [2] The four oxygen atoms orient around the arsenic atom in a tetrahedral geometry. [2] Resonance disperses the ion's −3 charge across all four oxygen atoms.

  4. Phenylarsine oxide - Wikipedia

    en.wikipedia.org/wiki/Phenylarsine_oxide

    In common with other compounds with the general formula RAsO, PhAsO forms a cyclic oligomer. [1] A range of ring sizes are possible, but PhAsO crystallizes as the tetramer, cyclo-(PhAsO) 4 . [ 2 ] RAsO compounds form these species because for heavy elements such as arsenic, two single bonds to oxygen are more stable than one double bond; see ...

  5. Arsenic - Wikipedia

    en.wikipedia.org/wiki/Arsenic

    The most common oxidation states for arsenic are: −3 in the arsenides, which are alloy-like intermetallic compounds, +3 in the arsenites, and +5 in the arsenates and most organoarsenic compounds. Arsenic also bonds readily to itself as seen in the square As 3− 4 ions in the mineral skutterudite. [33]

  6. Allotropes of arsenic - Wikipedia

    en.wikipedia.org/wiki/Allotropes_of_arsenic

    Black arsenic has as-yet been synthesized only in the presence of atomic impurities including mercury, [5] phosphorus, and oxygen, though a pure form of black arsenic was found in the Copiapó region of Chile. Mechanical exfoliation of the mineral found in Chilean caves, arsenolamprite, revealed a molecular structure with high in-phase ...

  7. Oxyarsenides - Wikipedia

    en.wikipedia.org/wiki/Oxyarsenides

    Oxyarsenides or arsenide oxides are chemical compounds formally containing the group AsO, with one arsenic and one oxygen atom. The arsenic and oxygen are not bound together as in arsenates or arsenites, instead they make a separate presence bound to the cations (metals), and could be considered as a mixed arsenide-oxide compound.

  8. Arsine - Wikipedia

    en.wikipedia.org/wiki/Arsine

    In its standard state arsine is a colorless, denser-than-air gas that is slightly soluble in water (2% at 20 °C) [1] and in many organic solvents as well. [citation needed] Arsine itself is odorless, [5] but it oxidizes in air and this creates a slight garlic or fish-like scent when the compound is present above 0.5 ppm. [6]

  9. Arsenite - Wikipedia

    en.wikipedia.org/wiki/Arsenite

    In chemistry, an arsenite is a chemical compound containing an arsenic oxyanion where arsenic has oxidation state +3. Note that in fields that commonly deal with groundwater chemistry, arsenite is used generically to identify soluble As III anions. IUPAC have recommended that arsenite compounds are to be named as arsenate(III), for example ...