Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/71128
DC FieldValueLanguage
dc.contributor.authorLu, Y.Y.en_US
dc.contributor.authorTung, J.Y.en_US
dc.contributor.authorChen, J.H.en_US
dc.contributor.authorLiao, F.L.en_US
dc.contributor.authorWang, S.L.en_US
dc.contributor.authorWang, S.S.en_US
dc.contributor.authorHwang, L.P.en_US
dc.date1999zh_TW
dc.date.accessioned2014-06-11T06:00:54Z-
dc.date.available2014-06-11T06:00:54Z-
dc.identifier.issn0277-5387zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/71128-
dc.description.abstractThis work determines the crystal structure of meso-tetraphenylporphyrinato salicylato thallium(III), Tl(tpp) (2-OH-C6H4CO2)(or Tl(tpp)(SA)). The coordination sphere of the Tl3+ ion is an approximately square-based pyramid in which a chelating bidentate 2OH-C6H4CO2- group occupies the apical site. The average Tl(1)-N bond distance is 2.221 Angstrom and the Tl atom is displaced 0.76 Angstrom from the porphyrin plane. The Tl(1)-O(1) and Tl(1)-O(2) distance are 2.36(1) and 2.47(1) Angstrom, respectively. Variable temperature C-13 NMR measurements reveal that the salicylato group of Tl(tpp)(SA) in CD2Cl2 solvent undergoes a ligand exchange. In the slow exchange region, the carbonyl and C-1" carbons of the salicylato group are separately located at 169.6 ppm [with a (2)J(Tl-C-13) coupling constant of 157 Hz] and 111.5 ppm [with a (3)J(Tl-C-13) coupling constant of 180 Hz] for Tl(tpp)(SA) in CD2Cl2 at -90 degrees C. In the fast exchange region, the C*O and C-1" carbons of the 2-OH-C6H4CO2- ligand in CD2Cl2 at 24 degrees C are singlets at 169.8 and 112.5 ppm, respectively. The C-13 resonance of the axial isocyanato ligand in the compound thiocyanato (meso-tetra-p-tolyl-porphyrinato)thallium(III), Tl(tptp)(SCN), was observed at 110.7 ppm (24 degrees C) with (2)J(Tl-C-13) coupling constant 253 Hz. This finding suggests that thiocyanato group is, as thiocyanate type, axially coordinated to the Tl atom in Tl(tptp)(SCN). In addition, there is no SCN- exchange in the same compound. (C) 1998 Elsevier Science Ltd. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationPolyhedronen_US
dc.relation.ispartofseriesPolyhedron, Volume 18, Issue 1-2, Page(s) 145-150.en_US
dc.relation.urihttp://dx.doi.org/10.1016/s0277-5387(98)00277-0en_US
dc.subjectcrystal structureen_US
dc.subjectthallium porphyrin complexesen_US
dc.subjectcis geometriesen_US
dc.subjectsalicyato liganden_US
dc.subjectlow temperature C-13 NMR analysisen_US
dc.subjectligand exchangeen_US
dc.subjectmolecular-structureen_US
dc.subjectcyanideen_US
dc.subjectacetateen_US
dc.titleSalicylate exchange in meso-tetraphenylporphyrinato salicylato thallium(III), Tl(tpp) (2-OH-C6H4CO2) and C-13 NMR investigation of its homolog thiocyanato (meso-tetra-p-tolyl-porphyrinato)thallium(III), Tl(tptp)(SCN)en_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/s0277-5387(98)00277-0zh_TW
item.grantfulltextnone-
item.openairetypeJournal Article-
item.languageiso639-1en_US-
item.fulltextno fulltext-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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