{"id":3953,"date":"2021-06-24T13:50:26","date_gmt":"2021-06-24T13:50:26","guid":{"rendered":"https:\/\/wp.icmm.csic.es\/esisna\/?p=3953"},"modified":"2021-06-24T14:39:00","modified_gmt":"2021-06-24T14:39:00","slug":"a-trapezoidal-octacyanoquinoid-acceptor-forms-solution-and-surface-products-by-antiparallel-shape-fitting-with-conformational-dipole-momentum-switch-angew-chem-2021","status":"publish","type":"post","link":"https:\/\/wp.icmm.csic.es\/esisna\/2021\/06\/24\/a-trapezoidal-octacyanoquinoid-acceptor-forms-solution-and-surface-products-by-antiparallel-shape-fitting-with-conformational-dipole-momentum-switch-angew-chem-2021\/","title":{"rendered":"A Trapezoidal Octacyanoquinoid Acceptor Forms Solution and Surface Products by Antiparallel Shape Fitting with Conformational Dipole Momentum Switch (ANGEW. CHEM. 2021)"},"content":{"rendered":"

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A new compound (1) formed by two antiparallelly disposed tetracyano thienoquinoidal units has been synthesized and studied by electrochemistry, UV\/Vis-NIR, IR, EPR, and transient spectroscopy. Self-assembly of 1 on a Au(111) surface has been investigated by scanning tunneling microscopy. Experiments have been rationalized by quantum chemical calculations. 1 exhibits a unique charge distribution in its anionic form, with a gradient of charge yielding a neat molecular in-plane electric dipole momentum, which transforms out-of-plane after surface deposition due to twisted\/folded conformational change and to partial charge transfer from Au(111). Intermolecular van der Waals interactions and antiparallel trapezoidal shape fitting lead to the formation of an optimal dense on-surface two-dimensional assembly of 1.<\/p>\n

Full text in this link (https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1002\/anie.202104294<\/a><\/span>)<\/p>\n

A Trapezoidal Octacyanoquinoid Acceptor Forms Solution & Surface Products by Antiparallel Shape Fitting with Conformational Dipole Momentum Switch, <\/strong>Juan Casado<\/i>,\u00a0<\/span><\/span>Samara Medina Rivero,\u00a0<\/span><\/span>Javier Urieta-Mora,\u00a0<\/span><\/span>Agust\u00edn Molina-Ontoria,\u00a0<\/span><\/span>Cristina Mart\u00edn-Fuentes,\u00a0<\/span><\/span>Jose Ignacio Urgel,\u00a0<\/span><\/span>Mar\u00eda Zubiria-Ulacia,\u00a0<\/span><\/span>Vega Lloveras,\u00a0<\/span><\/span>David Casanova,\u00a0<\/span><\/span>Jose Ignacio Martinez,\u00a0<\/span><\/span>Jaume Veciana,\u00a0<\/span><\/span>David Ecija,\u00a0<\/span><\/span>Nazario Mart\u00edn, Angew. Chem. Int. Ed.<\/em>, DOI: 10.1002\/anie.202104294 (2021)<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

A new compound (1) formed by two antiparallelly disposed tetracyano thienoquinoidal units has been synthesized and studied by electrochemistry, UV\/Vis-NIR, IR, EPR, and transient spectroscopy. Self-assembly of 1 on a Au(111) surface has been investigated by scanning tunneling microscopy. Experiments have been rationalized by quantum chemical calculations. 1 exhibits a\u2026<\/p>\n

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