Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals
Multicentre two-electron (mc/2e or `pancake bonding') bonding between 7,7,8,8-tetracyanoquinodimethane (TCNQ) radical anions was studied on its 14 novel salts with planar organic cations. The formal charges of the TCNQδ− moieties are −1/2 and −2/3, and they form mc/2e bonded dimers, trimers and...
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| Format: | Article |
| Language: | English |
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International Union of Crystallography
2022-07-01
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| Series: | IUCrJ |
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| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S2052252522004717 |
| _version_ | 1811326685949198336 |
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| author | Krešimir Molčanov Valentina Milašinović Biserka Kojić-Prodić Nadica Maltar-Strmečki Jiangyang You Ana Šantić Lidija Kanižaj Vladimir Stilinović Luka Fotović |
| author_facet | Krešimir Molčanov Valentina Milašinović Biserka Kojić-Prodić Nadica Maltar-Strmečki Jiangyang You Ana Šantić Lidija Kanižaj Vladimir Stilinović Luka Fotović |
| author_sort | Krešimir Molčanov |
| collection | DOAJ |
| description | Multicentre two-electron (mc/2e or `pancake bonding') bonding between 7,7,8,8-tetracyanoquinodimethane (TCNQ) radical anions was studied on its 14 novel salts with planar organic cations. The formal charges of the TCNQδ− moieties are −1/2 and −2/3, and they form mc/2e bonded dimers, trimers and tetramers which are further stacked into extended arrays. Multicentre bonding within these oligomers is characterized by short interplanar separations of 2.9–3.2 Å; distances between the oligomers are larger, typically >3.3 Å. The stacks are laterally connected by C—H...N hydrogen bonding, forming 2D arrays. The nature of mc/2e bonding is characterized by structural, magnetic and electrical data. The compounds are found to be semiconductors, and high conductivity [10−2 (Ω cm)−1] correlates with short interplanar distances between pancake-bonded oligomers. |
| first_indexed | 2024-04-13T14:54:07Z |
| format | Article |
| id | doaj.art-161d531fff9b4b9599272de6d5891658 |
| institution | Directory Open Access Journal |
| issn | 2052-2525 |
| language | English |
| last_indexed | 2024-04-13T14:54:07Z |
| publishDate | 2022-07-01 |
| publisher | International Union of Crystallography |
| record_format | Article |
| series | IUCrJ |
| spelling | doaj.art-161d531fff9b4b9599272de6d58916582022-12-22T02:42:29ZengInternational Union of CrystallographyIUCrJ2052-25252022-07-019444946710.1107/S2052252522004717lq5043Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicalsKrešimir Molčanov0Valentina Milašinović1Biserka Kojić-Prodić2Nadica Maltar-Strmečki3Jiangyang You4Ana Šantić5Lidija Kanižaj6Vladimir Stilinović7Luka Fotović8Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Materials Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Materials Physics, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, CroatiaDepartment of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, CroatiaDepartment of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, CroatiaMulticentre two-electron (mc/2e or `pancake bonding') bonding between 7,7,8,8-tetracyanoquinodimethane (TCNQ) radical anions was studied on its 14 novel salts with planar organic cations. The formal charges of the TCNQδ− moieties are −1/2 and −2/3, and they form mc/2e bonded dimers, trimers and tetramers which are further stacked into extended arrays. Multicentre bonding within these oligomers is characterized by short interplanar separations of 2.9–3.2 Å; distances between the oligomers are larger, typically >3.3 Å. The stacks are laterally connected by C—H...N hydrogen bonding, forming 2D arrays. The nature of mc/2e bonding is characterized by structural, magnetic and electrical data. The compounds are found to be semiconductors, and high conductivity [10−2 (Ω cm)−1] correlates with short interplanar distances between pancake-bonded oligomers.http://scripts.iucr.org/cgi-bin/paper?S2052252522004717multicentre two-electron bondingtcnq radical anionspancake bondingcrystal structurescrystal engineeringmagnetic propertieselectrical properties |
| spellingShingle | Krešimir Molčanov Valentina Milašinović Biserka Kojić-Prodić Nadica Maltar-Strmečki Jiangyang You Ana Šantić Lidija Kanižaj Vladimir Stilinović Luka Fotović Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals IUCrJ multicentre two-electron bonding tcnq radical anions pancake bonding crystal structures crystal engineering magnetic properties electrical properties |
| title | Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals |
| title_full | Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals |
| title_fullStr | Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals |
| title_full_unstemmed | Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals |
| title_short | Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals |
| title_sort | semiconductive 2d arrays of pancake bonded oligomers of partially charged tcnq radicals |
| topic | multicentre two-electron bonding tcnq radical anions pancake bonding crystal structures crystal engineering magnetic properties electrical properties |
| url | http://scripts.iucr.org/cgi-bin/paper?S2052252522004717 |
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