Organophosphorus

•  Phosphate

  A phosphate, an inorganic chemical, is a salt of phosphoric acid. In organic chemistry, a phosphate, or organophosphate, is an ester of phosphoric acid. Organic phosphates are important in biochemistry and biogeochemistry or ecology. Inorganic phosphates are mined to obtain phosphorus for use in agriculture and industry. At elevated temperatures in the solid state, phosphates can condense to form pyrophosphates.

  

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•  Phosphine

  Phosphine is the compound with the chemical formula PH3. It is a colorless, flammable, toxic gas. Pure phosphine is odourless, but technical grade samples have a highly unpleasant odor like garlic or rotting fish, due to the presence of substituted phosphine and diphosphine (P2H4). Phosphines are also a group of organophosphorus compounds with the formula R3P (R = organic derivative).

  

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•  Phosphite

  The phosphite ion (HPO3) is a polyatomic ion with a phosphorus central atom where phosphorus has an oxidation state of +3. Its geometry is approximately tetrahedral. The bonding can be described in terms of a number of resonance canonicals, (there are three equivalent canonicals containing a single double bond) effectively delocalising the negative charges across the three equivalent oxygen atoms. Many phosphite salts, such as ammonium phosphite, are highly water soluble.

  

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•  Phosphinate

  Phosphinates are organophosphorus compounds with the formula OP(OR)R2.

  

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•  Phosphonate

  Phosphonates or phosphonic acids are organic compounds containing C-PO(OH)2 or C-PO(OR)2 groups. Bisphosphonates were first synthesized in 1897 by Von Baeyer and Hofmann. An example of such a bisphosphonate is HEDP. Since the work of Schwarzenbach in 1949, phosphonic acids are known as effective chelating agents. The introduction of an amine group into the molecule to obtain -NH2-C-PO(OH)2 increases the metal binding abilities of the phosphonate.

  

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•  Phosphine oxide

  Phosphine oxides are organophosphorus compounds with the formula OPR3, where R = alkyl or aryl. They are considered to be the most stable organophosphorus compounds, triphenylphosphine oxide and trimethylphosphine oxide decomposing only above 450 °C.

  

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•  O-Ethyl methylphosphonothioic acid

  O-Ethyl methylphosphonothioic acid (EMPTA) is a dual-purpose chemical. Although it has constructive uses in the synthesis of pesticides and pharmaceuticals, it is also a precursor in the synthesis of nerve agents such as Agent VM and Agent VX.

  

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•  Phosphinite

  Phosphinites are organophosphorus compounds with the formula P(OR)R2.

  

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•  Phosphonite

  Phosphonites are organophosphorus compounds with the formula P(OR)2R. They are derivivatives of phosphonous acid.

  

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•  Methylphosphonyl difluoride

  Methylphosphonyl difluoride (DF), also called methyl difluorophosphite, methylphosphonic difluoride, and difluoromethylphosphine oxide, is a chemical weapon . It is a Schedule 1 substance in the sense of the Chemical Weapons Convention. It is used for production of sarin and soman. Its chemical formula is CH3POF2.

  

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• Organophosphorus by likeorhate
• Phosphorus compounds by likeorhate

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  Allmannshofen is a municipality in the district of Augsburg in Bavaria in Germany.

  

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