Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/3677
DC FieldValueLanguage
dc.contributor.authorA., Bianchien_us
dc.contributor.authorJ., Giustien_us
dc.contributor.authorP., Paolettien_us
dc.contributor.authorMangani, Stefanoen_us
dc.date.accessioned2021-03-30T14:35:14Z-
dc.date.available2021-03-30T14:35:14Z-
dc.date.issued1986-
dc.identifier.issn0020-1693en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12779/3677-
dc.description48014en_US
dc.description.abstractThe thermal stability of the compounds KX(DB- 18C6) (X = NCS, Br, I, NO3; DB18C6 = dibenzo-18- crown-6) has been determined by differential scanning calorimetry. Only the KNCS(DB18C6) complex melts congruently; the iodide and the nitrate compounds, when melting, undergo a partial dissociation into their components. The compound KI(DB18C6)- C2H5OH, when heated, loses the ethanol molecule without any dissociation. A KBr(DB18C6)3CHCl3 compound was isolated; it dissociates into its components by evaporation of the solvate molecules. Crystals of the compounds KNCS(DB18C6) are monoclinic, space group P21/n with a = 19.107(8), b = 27.085(5),c = 8.559(5) Å, β = 101.96(4),° and Z = 8. The structure was solved by the heavy atom method. Refinement of the atomic parameters by least-squares gave a final R factor of 0.127 (Rw = 0.116). The structure consists of independent complex molecules of KNCS(DB18C6) in which the potassium ion is coordinated by the six oxygen atoms of the crown ether and by the nitrogen atom of the thiocyanate ion.en_US
dc.language.isoenen_US
dc.relationNoneen_US
dc.relation.ispartofINORGANICA CHIMICA ACTAen_US
dc.subjectx-ray; macrocycle; DSCen_US
dc.titleThermal-stability of Some Potassium Dibenzo-18-crown-6 Solid Compounds - Kx(db18c6) (x = Ncs, Br, I, No3) - Differential Scanning Calorimetry and X-ray-investigationsen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/S0020-1693(00)82192-1en_US
dc.identifier.scopus2-s2.0-0001134362en_US
dc.identifier.isiWOS:A1986D458400019en_US
dc.relation.volume117en_US
dc.description.firstpage157en_US
dc.description.lastpage164en_US
dc.description.thirdmissionNot applicableen_US
item.cerifentitytypePublications-
item.grantfulltextnone-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeArticle-
item.fulltextNo Fulltext-
crisitem.author.orcid0000-0003-4824-7478-
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