ISSN:
0323-7648
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
A solid-state (single crystal X-ray, IR, DSC) and solution (1H NMR nuclear Overhauser effect (NOE) and longitudinal relaxation times (T1)) study of 4,4′-bis(butylthio)-2,2′-bithiophene is reported. The two thienyl rings are coplanar and in an anti orientation in the solid state, whereas a low amount of syn form is present in solution. The n-butylthio chain adopts a fully extended, nearly idealized, anti conformation in the crystal, with all the non-H atoms of the whole molecule strictly coplanar, despite the molecular length, but does not show a preferred orientation in solution. The observed changes on passing from the solid to the solution state are indications of the potential solvatochromic and thermochromic properties of β-butylthio-substituted oligomers and polymers.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/actp.1996.010470603
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