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http://dx.doi.org/10.18419/opus-7656
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DC Element | Wert | Sprache |
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dc.contributor.author | Gärtner, Stephan | de |
dc.contributor.author | Heinen, Ilsabe | de |
dc.contributor.author | Schweitzer, Dieter | de |
dc.contributor.author | Nuber, Bernhard | de |
dc.contributor.author | Keller, Heimo J. | de |
dc.date.accessioned | 2011-08-04 | de |
dc.date.accessioned | 2016-03-31T11:43:49Z | - |
dc.date.available | 2011-08-04 | de |
dc.date.available | 2016-03-31T11:43:49Z | - |
dc.date.issued | 1989 | de |
dc.identifier.other | 353601667 | de |
dc.identifier.uri | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-65213 | de |
dc.identifier.uri | http://elib.uni-stuttgart.de/handle/11682/7673 | - |
dc.identifier.uri | http://dx.doi.org/10.18419/opus-7656 | - |
dc.description.abstract | The title compound, [BEDT-TTF]4[Pt(C2O4)2] is obtained by electrocrystallization, which yields black platelets of stoichiometry C44H32O8PtS32, Mr = 1909.87. Crystal structure determination at room temperature gives a triclinic cell Pi, with a = 8.678(2) A, b =11.878(5) A, c = 15.757(7) A,α = 105.49(3)°, β= 91.05(3)", 'γ= 91.96(3)", V = 1563.64 A3,d c = 2.03 g/cm 3, Z = 1. The solid contains sheets of BEDT-TTF cations separated by sheets of [Pt(C2O4)2]2-- counterions. The BEDT-TTF sheets are made up of columns that interact strongly through S-S contacts. The columns are built up by pairs of BEDT-TTF molecules. There are strongly varying bond distances in the two different BEDT-TTF moieties that make up a pair. This fact is especially clearly expressed in the surprisingly short C-C distances of the central C=C double bond of the two BEDT-TTF ions:1.273 A and 1.327 A respectively. These are by far the shortest distances for the central C=C bonds observed so far in conductive BEDT-TTF salts. The compound behaves like a metal down to about 60 K. Temperature-dependent d.c. conductivity, e.s.r. and thermopower measurements show metallic behaviour at room temperature (σ300 = 20 S/cm) with a metal-to-metal phase transition around 200 K. At about 60 K a second broad phase transition occurs and the crystals become semiconducting. | en |
dc.language.iso | en | de |
dc.rights | info:eu-repo/semantics/openAccess | de |
dc.subject.classification | Tetrathiafulvalen , Organischer Supraleiter , Metall , Radikalkationensalz | de |
dc.subject.ddc | 530 | de |
dc.title | BEDT-TTF salts with square platinates(II) as counterions : [BEDT-TTF]4[Pt(C2O4)2], a new organic metal | en |
dc.type | article | de |
ubs.fakultaet | Fakultätsübergreifend / Sonstige Einrichtung | de |
ubs.institut | Sonstige Einrichtung | de |
ubs.opusid | 6521 | de |
ubs.publikation.source | Synthetic metals 31 (1989), S. 199-213 | de |
ubs.publikation.typ | Zeitschriftenartikel | de |
Enthalten in den Sammlungen: | 15 Fakultätsübergreifend / Sonstige Einrichtung |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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schw133.pdf | 2,62 MB | Adobe PDF | Öffnen/Anzeigen |
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