[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/salpn-ligand-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/salpn-ligand-wikipedia\/","headline":"Salpn ligand – Wikipedia","name":"Salpn ligand – Wikipedia","description":"From Wikipedia, the free encyclopedia Salpn ligand Names IUPAC name 2,2′-{1,2-Propanediyl\u00adbis[nitrilo\u00ad(E)methyl\u00adylidene]}\u00addiphenol Identifiers ChEMBL ChemSpider ECHA InfoCard 100.002.159 EC Number UNII","datePublished":"2018-05-27","dateModified":"2018-05-27","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/93\/Salpn.svg\/200px-Salpn.svg.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/93\/Salpn.svg\/200px-Salpn.svg.png","height":"110","width":"200"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/salpn-ligand-wikipedia\/","about":["Wiki"],"wordCount":2585,"articleBody":"From Wikipedia, the free encyclopediaSalpn ligandNamesIUPAC name2,2′-{1,2-Propanediyl\u00adbis[nitrilo\u00ad(E)methyl\u00adylidene]}\u00addiphenolIdentifiersChEMBLChemSpiderECHA InfoCard100.002.159 EC NumberUNIIInChI=1S\/C17H18N2O2\/c1-13(19-12-15-7-3-5-9-17(15)21)10-18-11-14-6-2-4-8-16(14)20\/h2-9,11-13,20-21H,10H2,1H3\/b18-11+,19-12+Key:\u00a0RURPJGZXBHYNEM-GDAWTGGTSA-NOC1=CC=CC=C1\/C=N\/CC(C)\/N=C\/C2=CC=CC=C2OPropertiesC17H18N2O2Molar mass282.343\u00a0g\u00b7mol\u22121HazardsGHS labelling:WarningH226, H302, H315, H317, H319, H360, H411, H412P201, P202, P210, P233, P240, P241, P242, P243, P261, P264, P270, P272, P273, P280, P281, P301+P312, P302+P352, P303+P361+P353, P305+P351+P338, P308+P313, P321, P330, P332+P313, P333+P313, P337+P313, P362, P363, P370+P378, P391, P403+P235, P405, P501Except where otherwise noted, data are given for materials in their standard state (at 25\u00a0\u00b0C [77\u00a0\u00b0F], 100\u00a0kPa).Chemical compoundSalpn is the common name for a chelating ligand, properly called N,N\u2032-bis(salicylidene)-1,2-propanediamine, used as a motor oil additive.[1]The molecular structure of pure (metal-free) salpn, sometimes denoted H2(salpn) or salpnH2, can be described as the salen ligand with a methyl group attached to the ethylene bridge that links the two nitrogen atoms.As in the case of salen compound, the actual ligand is usually the conjugate base salpn2-, the divalent anion that result from the metal-free compound by the loss of two hydroxyl protons. This dianion is commonly denoted “(salpn)” in formulas of metal complexes.The abbreviation “salpn” is also sometimes used for the structural isomer N,N\u2032-bis(salicylidene)-1,3-diamino\u00adpropane and its conjugate base,[2] derived from 1,3-diaminopropane rather than 1,2-diaminopropane.Preparation[edit]The synthesis of salpn is achieved by a condensation reaction of 1,2-diaminopropane with salicylaldehyde:2C6H4(OH)CHO + CH3CH(NH2)CH2NH2 \u2192 [C6H4(OH)CH]2CH3CHNCH2N + 2H2OSalpn is used as a fuel additive as a metal deactivator in motor oils. Trace metals degrade the fuels by catalyzing oxidation processes that lead to gums and solids. Metal deactivators like salpn form stable coordination compounds with the metals, suppressing their catalytic activity.[1] While salpn forms stable chelate complexes with many metals including copper, iron, chromium, and nickel, it is the coordination with copper that makes it a popular choice as a fuel additive. Copper has the highest catalytic activity in fuel, and salpn forms a highly stable square planar complex with the metal.[3]Salpn is preferred over salen, possibly because it has higher solubility in non-polar liquids.[citation needed]References[edit]^ a b Dabelstein, W.; Reglitzky A.; Schutze A.; Reders, K. “Automotive Fuels”. Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH.^ K. Rajender Reddy, M. V. Rajasekharan, and J.-P. Tuchagues (1998): “Synthesis, Structure, and Magnetic Properties of Mn(salpn)N3, a Helical Polymer, and Fe(salpn)N3, a Ferromagnetically Coupled Dimer(salpnH2 = N,N\u2032-bis(Salicylidene)-1,3-diaminopropane)”. Inorganic Chemistry, volume 37, issue 23, pages 5978\u20135982. doi:10.1021\/ic971592y^ Evans, D. A.; Miller, S. J.; Lectka, T.; von Matt. P. (1999). “Chiral Bis(oxazoline)copper(II) Complexes as Lewis Acid Catalysts for Enantioselective Diels\u2013Alder Reaction”. J. Am. Chem. Soc. 121: 7559\u20137573. doi:10.1021\/ja991190k.  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