Phosphonic acid

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Editor-In-Chief: Henry A. Hoff

Overview

In inorganic chemistry, phosphonic acid is a phosphorus oxoacid with a formula of H3PO3, more commonly known as phosphorous acid. It exists in solution as two tautomers, the major one being HP(O)(OH)2 and the minor one P(OH)3. The former is sometimes termed phosphonic acid, with the latter designated as phosphorous acid. Sometimes confusingly, both these names are also used to refer to H3PO3 in general, i.e. both tautomers.

In organic chemistry, a phosphonic acid is a compound with the general formula RP(O)(OH)2.

An example of an organic phosphonic acid is Foscarnet.

An oligophosphonic acid refers to a few molecules of phosphonic acid condensed into a molecule with the loss of water.

A general formula for such oligophosphonic acids is (HPO)nOn-1(OH)2, where n = 2, 3, 4, etc., oligo-. A polyphosphonic acid can have dozens of such phosphonic acid units condensed in a row with the loss of H2O for each unit added on.

An example that incorporates triphosphonic acid: ethane-1,1,2-triphosphonic acid[1]. In some phosphonic anhydrides (RPO2)3, R can be tBu, 2-methylphenyl, 2,4,6-trimethylphenyl.[2]

References

  1. Bogdán Cs, Péczely G, Hägele G (2007). "Metal Complexes of Ethane and Propane Frame-Substituted Oligophosphonic and Oligophosphonocarboxylic Acids". Phosphorus, Sulfur, and Silicon and the Related Elements. 182 (10): 2337–50. Unknown parameter |month= ignored (help)
  2. Diemert K, Kuchen W, Poll W, Sandt F (1998). "A Convenient Synthesis of Phosphonic Anhydrides - Trimers [RPO2]3 (R = tert-Butyl, 2-Methylphenyl, 2,4,6-Trimethylphenyl): Their Structures and Reaction Products". Eur J Inorgan Chem. 1998 (3): 361–6. doi:10.1002/(SICI)1099-0682(199803)1998:3<361::AID-EJIC361>3.0.CO;2-T.

See also

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Cost Effectiveness of Phosphonic acid

| group5 = Clinical Trials Involving Phosphonic acid | list5 = Ongoing Trials on Phosphonic acid at Clinical Trials.govTrial results on Phosphonic acidClinical Trials on Phosphonic acid at Google


| group6 = Guidelines / Policies / Government Resources (FDA/CDC) Regarding Phosphonic acid | list6 = US National Guidelines Clearinghouse on Phosphonic acidNICE Guidance on Phosphonic acidNHS PRODIGY GuidanceFDA on Phosphonic acidCDC on Phosphonic acid


| group7 = Textbook Information on Phosphonic acid | list7 = Books and Textbook Information on Phosphonic acid


| group8 = Pharmacology Resources on Phosphonic acid | list8 = AND (Dose)}} Dosing of Phosphonic acidAND (drug interactions)}} Drug interactions with Phosphonic acidAND (side effects)}} Side effects of Phosphonic acidAND (Allergy)}} Allergic reactions to Phosphonic acidAND (overdose)}} Overdose information on Phosphonic acidAND (carcinogenicity)}} Carcinogenicity information on Phosphonic acidAND (pregnancy)}} Phosphonic acid in pregnancyAND (pharmacokinetics)}} Pharmacokinetics of Phosphonic acid


| group9 = Genetics, Pharmacogenomics, and Proteinomics of Phosphonic acid | list9 = AND (pharmacogenomics)}} Genetics of Phosphonic acidAND (pharmacogenomics)}} Pharmacogenomics of Phosphonic acidAND (proteomics)}} Proteomics of Phosphonic acid


| group10 = Newstories on Phosphonic acid | list10 = Phosphonic acid in the newsBe alerted to news on Phosphonic acidNews trends on Phosphonic acid


| group11 = Commentary on Phosphonic acid | list11 = Blogs on Phosphonic acid

| group12 = Patient Resources on Phosphonic acid | list12 = Patient resources on Phosphonic acidDiscussion groups on Phosphonic acidPatient Handouts on Phosphonic acidDirections to Hospitals Treating Phosphonic acidRisk calculators and risk factors for Phosphonic acid


| group13 = Healthcare Provider Resources on Phosphonic acid | list13 = Symptoms of Phosphonic acidCauses & Risk Factors for Phosphonic acidDiagnostic studies for Phosphonic acidTreatment of Phosphonic acid

| group14 = Continuing Medical Education (CME) Programs on Phosphonic acid | list14 = CME Programs on Phosphonic acid

| group15 = International Resources on Phosphonic acid | list15 = Phosphonic acid en EspanolPhosphonic acid en Francais

| group16 = Business Resources on Phosphonic acid | list16 = Phosphonic acid in the MarketplacePatents on Phosphonic acid

| group17 = Informatics Resources on Phosphonic acid | list17 = List of terms related to Phosphonic acid


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