Trimetaphosphate is a cyclic trimer formed by the self reaction of metaphosphate ions
A metaphosphate ion is an oxyanion that has the empirical formula PO− 3.[1] It was first postulated in 1955[2] but was not observed until 1979, when it was detected by mass spectrometry.[3] Metaphosphate is an intermediate in the hydrolysis of phosphate esters but it is difficult to isolate, as it readily hydrolyses to from a dihydrogen phosphate ion ([H 2PO 4]− ) and tends to self-react in the absence of water to form rings or infinite chains:[4] These species are also called metaphosphates and are generally stable, with some such as sodium trimetaphosphate being produced on an industrial scale.
Metaphosphates can be used as an alternative of white phosphorus in organic syntheses.[5]
^Averbuch-Pouchot, M.T; Durif, A. (1996). Topics in Phosphate Chemistry. World Scientific Pub Co Inc. ISBN 981-02-2634-9.
^Butcher, W. W.; Westheimer, F. H. (May 1955). "The Lanthanum Hydroxide Gel Promoted Hydrolysis of Phosphate Esters". Journal of the American Chemical Society. 77 (9): 2420–2424. doi:10.1021/ja01614a018.
^Harvan, Donald J.; Hass, J. Ronald; Busch, Kenneth L.; Bursey, Maurice M.; Ramirez, Fausto; Meyerson, Seymour (November 1979). "Direct observation of the monomeric metaphosphate anion". Journal of the American Chemical Society. 101 (24): 7409–7410. doi:10.1021/ja00518a050.
^Regitz, Manfred; Maas, Gerhard (1981). "Short-lived phosphorus(V) compounds having coordination number 3". Organic Chemistry. 97: 71–120. doi:10.1007/BFb0037041.
^"Sidestepping white phosphorus". C&EN Global Enterprise. 96 (7): 7. 2018. doi:10.1021/cen-09607-scicon1. ISSN 2474-7408.
A metaphosphate ion is an oxyanion that has the empirical formula PO− 3. It was first postulated in 1955 but was not observed until 1979, when it was...
Barium metaphosphate is an inorganic substance with the molecular formula Ba(PO3)2. It is a colourless solid that is insoluble in water, though is soluble...
Na6[(PO3)6]. Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates (empirical formula: NaPO3), of which the hexamer is one, and is usually...
Uranyl metaphosphate is a compound of uranium, phosphorus, and oxygen. It is one of the phosphates of uranium with the formula [UO2(PO3)2]n. This long-chain...
pyrophosphate, (P 2O 7)4− , and triphosphate, (P 3O 10)5− . The various metaphosphate ions (which are usually long linear polymers) have an empirical formula...
of 585 °C. A hydrate also exists which decomposes at 110 °C. Silver metaphosphate (AgPO3) (CAS No. 13465-96-8) is a white solid with a density of 6.370...
When heated further, MKP decomposes, by loss of water, to potassium metaphosphate, KPO 3, at 400 °C (752 °F). Monopotassium phosphate is produced by the...
triphosphate and tetraphosphates. The cyclic polyphosphates, called metaphosphates, include the trimer sodium trimetaphosphate and the tetramer, Na3P3O9...
produced industrially by the reaction of sodium fluoride with sodium metaphosphate: NaPO3 + NaF → Na2PO3F The process involves scission of a pyrophosphate...
STMP may refer to: Sodium trimetaphosphate (also STMP), a metaphosphate of sodium Stamps.com (Nasdaq ticker: STMP), an American company that provides...
corresponding metaphosphate: Ca(H2PO4)2 → Ca(PO3)2 + 2 H2O When ignited to a white heat (~1300 °C) with charcoal, calcium metaphosphate yields two-thirds...
consisting of calcium ions (Ca2+) together with orthophosphates (PO3− 4), metaphosphates or pyrophosphates (P 2O4− 7) and occasionally oxide and hydroxide ions...
000 nm) range. Phosphate glass is a class of optical glasses composed of metaphosphates of various metals. Instead of the SiO4 tetrahedra observed in silicate...
Phosphate glass is a class of optical glasses composed of metaphosphates of various metals. Instead of SiO2 in silicate glasses, the glass forming substrate...
solution. Salts or esters of cyclic polyphosphoric acids are often called "metaphosphates". What are commonly called trimetaphosphates actually have a mixture...
(e.g., hexachlorophosphazene (NPCl2)3), phosphorus and oxygen (e.g., metaphosphates (PO−3)3 and other cyclic phosphoric acid derivatives), boron and oxygen...
Sodium trimetaphosphate (also STMP), with formula Na3P3O9, is one of the metaphosphates of sodium. It has the formula Na3P3O9 but the hexahydrate Na3P3O9·(H2O)6...
Kornberg, Arthur; Kornberg, S. R.; Simms, Ernest S. (1956-01-01). "Metaphosphate synthesis by an enzyme from Escherichia coli". Biochimica et Biophysica...
methacrylate (EgMA) for endodontic restorations. Evaluation of a Β-Calcium Metaphosphate Bone Graft Containing Bone Morphogenetic Protein-7 in Rabbit Maxillary...
critical to phosphate transfer, but instead the stabilization of a metaphosphate transition state. Additionally, APH(3') has a nucleotide positioning...
analogue, dimetaphosphate P 2O2− 6, in contrast, is not known, the metaphosphates favour polymeric structures of chains or rings. P 2S2− 8 and P 2S2−...
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