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It was first prepared in 1910 by Gauthier by the following reaction: 2 PCl 3 + H 2 → P 2 Cl 4 + 2 HCl. An improved method involves coevaporation of phosphorus trichloride and copper, as described by the following: [1] 2 PCl 3 + 2 Cu → P 2 Cl 4 + 2 CuCl
Milk of sulfur (lac sulphuris) – formed by adding an acid to thion hudor (lime sulfur). Natron/soda ash/soda – sodium carbonate. Na 2 CO 3; Nitrum flammans – ammonium nitrate. Sugar of lead – lead(II) acetate, formed by dissolving lead oxide in vinegar. Thion hudor – lime sulfur, formed by boiling flowers of sulfur with slaked lime.
A pentachloride is a compound or ion that contains five chlorine atoms or ions. Common pentachlorides include: Antimony pentachloride, SbCl 5; Arsenic pentachloride, AsCl 5; Molybdenum pentachloride, MoCl 5; Niobium pentachloride, NbCl 5; Phosphorus pentachloride, PCl 5; Protactinium pentachloride, PaCl 5; Osmium pentachloride, OsCl 5
The main purpose of chemical nomenclature is to disambiguate the spoken or written names of chemical compounds: each name should refer to one compound. Secondarily, each compound should have only one name, although in some cases some alternative names are accepted. Preferably, the name should also represent the structure or chemistry of a compound.
With one equivalent of alcohol and in the absence of base, the first product is alkoxyphosphorodichloridite: [10] PCl 3 + EtOH → PCl 2 (OEt) + HCl. In the absence of base, however, with excess alcohol, phosphorus trichloride converts to diethylphosphite: [11] [12] PCl 3 + 3 EtOH → (EtO) 2 P(O)H + 2 HCl + EtCl. Secondary amines (R 2 NH) form ...
3. Colloquially, any compound which, when dissolved in water, yields a pH of less than 7.0. The term "acid" is commonly used to refer to the entire aqueous solution, whereas stricter definitions refer only to the acidic solute. [2] acid anhydride Any chemical compound derived by the removal of water molecules from an acid. Contrast base anhydride.
IUPAC states that, "As one of its major activities, IUPAC develops Recommendations to establish unambiguous, uniform, and consistent nomenclature and terminology for specific scientific fields, usually presented as: glossaries of terms for specific chemical disciplines; definitions of terms relating to a group of properties; nomenclature of chemical compounds and their classes; terminology ...
To avoid long and tedious names in normal communication, the official IUPAC naming recommendations are not always followed in practice, except when it is necessary to give an unambiguous and absolute definition to a compound. IUPAC names can sometimes be simpler than older names, as with ethanol, instead of ethyl alcohol. For relatively simple ...