Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 19, Issue 14, Pages 9669-9675Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp00092h
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Funding
- Consejo Nacional de Ciencia y Tecnologia (CONACYT)
- Eusko Jaurlaritza (Basque Government) [IT588-13]
- Spanish Office of Scientific Research [CTQ2012-38496-C05-01, CTQ2014-52525-P, CTQ2015-67660-P]
- European funding (ERDF)
- European funding (ESF)
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An extensive theoretical investigation of the electronic structure of a tested fair model dicupra[10] annulene compound, based on the analysis of atom-pair delocalization indices, Bader's molecular graph, the inspection of the canonical molecular orbitals, the z components of their Nuclear Independent Chemical Shifts, NICS(0)(zz), and the normalized Giambiagi multicenter delocalization indices, concludes that the perimeter aromaticity of the dicupra[10] annulene ring is consistent with both 10 and 14 p-electron Huckel aromatic 10-membered rings. In either case, the 10-membered ring encloses two 6 p-electron aromatic inner rings, hinged at the Cu-Cu bond. This work demonstrates that the aromaticity of dicupra[10] annulenes closely resembles that of naphthalene. Hence, they are best regarded as metalla-polyacenes, which could make the building blocks of extended structures such as metalated nanotubes.
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