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Crystal structures of two charge–transfer complexes of benzo[1,2-c:3,4-c′:5,6-c′′]trithiophene (D (3h)-BTT)
Benzo[1,2-c:3,4-c′:5,6-c′′]trithiophene (D (3h)-BTT) is an easily prepared electron donor that readily forms charge–transfer complexes with organic acceptors. We report here two crystal structures of its charge–transfer complexes with 7,7,8,8-tetracyanoquinodimethane (TCNQ) and buckminsterfulle...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6775755/ https://www.ncbi.nlm.nih.gov/pubmed/31636997 http://dx.doi.org/10.1107/S2056989019013161 |
Sumario: | Benzo[1,2-c:3,4-c′:5,6-c′′]trithiophene (D (3h)-BTT) is an easily prepared electron donor that readily forms charge–transfer complexes with organic acceptors. We report here two crystal structures of its charge–transfer complexes with 7,7,8,8-tetracyanoquinodimethane (TCNQ) and buckminsterfullerene (C(60)). The D (3h)-BTT·TCNQ complex, C(12)H(6)S(3)·C(12)H(4)N(4), crystallizes with mixed layers of donors and acceptors, with an estimated degree of charge transfer at 0.09 e. In the D (3h)-BTT·C(60)·toluene complex, C(12)H(6)S(3)·C(60)·C(7)H(8), the central ring of BTT is ‘squeezed’ by the C(60) molecules from both faces. However, the degree of charge transfer is low. The C(60) unit is disordered over two sites in a 0.766 (3):0.234 (3) ratio and was refined as a two-component inversion twin. |
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