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The hypophosphite ion is H2PO−2, hypophosphorous acid minus one hydrogen ion. Hypophosphites are the compounds containing this ion, with phosphorus in oxidation state +1, or similar covalent ones. Two hydrogens are attached directly to the phosphorus atom. The IUPAC (mostly organic) name for the same ion is phosphinate. This is virtually not used for hypophosphite ion itself, with both hydrogens remaining, but for substituted ions. For example, "dimethylphosphinate" ion would be (CH3)2PO−2. Hypophosphites can be made by heating white phosphorus in warm aqueous alkali: 2 H2PO−2 → PH3 + HPO2−4

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  • Hypophosphite
  • Гипофосфиты
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  • Гипофосфиты — соли фосфорноватистой кислоты. Соединения содержат анион H2PO2− со степенью окисления фосфора +1. Два атома водорода присоединены непосредственно к атому водорода (по этой причине соответствующая кислота одноосновная). Согласно номенклатуре IUPAC данные соли называются фосфинатами (как правило, в случае органических соединений). Это название практически не используется по отношению к самому иону, где оба атома водорода не замещены органическими радикалами.
  • The hypophosphite ion is H2PO−2, hypophosphorous acid minus one hydrogen ion. Hypophosphites are the compounds containing this ion, with phosphorus in oxidation state +1, or similar covalent ones. Two hydrogens are attached directly to the phosphorus atom. The IUPAC (mostly organic) name for the same ion is phosphinate. This is virtually not used for hypophosphite ion itself, with both hydrogens remaining, but for substituted ions. For example, "dimethylphosphinate" ion would be (CH3)2PO−2. Hypophosphites can be made by heating white phosphorus in warm aqueous alkali: 2 H2PO−2 → PH3 + HPO2−4
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  • The hypophosphite ion is H2PO−2, hypophosphorous acid minus one hydrogen ion. Hypophosphites are the compounds containing this ion, with phosphorus in oxidation state +1, or similar covalent ones. Two hydrogens are attached directly to the phosphorus atom. The IUPAC (mostly organic) name for the same ion is phosphinate. This is virtually not used for hypophosphite ion itself, with both hydrogens remaining, but for substituted ions. For example, "dimethylphosphinate" ion would be (CH3)2PO−2. Hypophosphites can be made by heating white phosphorus in warm aqueous alkali: P4 + 3 OH− + 3 H2O → 3 H2PO−2 + PH3 Hypophosphites are reducing agents: H2PO−2 +3OH− → HPO2−3 + 2H2O + 2e− Hypophosphites are used in electroless nickel plating as the reducing agent to deposit for example Ni metal from Ni salts. The hypophosphite ion is thermodynamically unstable, and disproportionates on heating to phosphine gas and phosphate salts: 2 H2PO−2 → PH3 + HPO2−4
  • Гипофосфиты — соли фосфорноватистой кислоты. Соединения содержат анион H2PO2− со степенью окисления фосфора +1. Два атома водорода присоединены непосредственно к атому водорода (по этой причине соответствующая кислота одноосновная). Согласно номенклатуре IUPAC данные соли называются фосфинатами (как правило, в случае органических соединений). Это название практически не используется по отношению к самому иону, где оба атома водорода не замещены органическими радикалами.
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