Chemical pathways for poly-anionic isomerisation in the metastable anions of tetra-deprotonated naphthalene: an intra-molecular inter-ring proton-transfer

Literature Information

Publication Date 2017-04-07
DOI 10.1039/C7CP01006K
Impact Factor 3.676
Authors

Vikas, Poonam Sangwan, Ramanpreet Kaur


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Abstract

A surprising chemical pathway involving an intra-molecular proton-transfer between the two different aromatic rings of naphthalene is revealed while exploring the isomerisation in the metastable tetra-anionic species of tetra-deprotonated naphthalene. The pathways are explored through quantum-mechanical computations employing a global reaction route mapping (GRRM) strategy. Notably, several other pathways traced exhibit interesting aspects of poly-anionic isomerisation in the multiply-charged metastable molecular anions, which can provide valuable insights into the mechanisms of ring closure and expansion leading to species like azulenes, cyclodecapentaene, and phenylvinylacetylene. The metastable poly-anionic species along the pathways were also analysed using a nuclear charge stabilisation procedure while employing conventional density functional theory (DFT) with the B3LYP exchange–correlation functional as well as long-range and dispersion corrected DFT/ωB97XD and DFT-D3 methods. Interestingly, the charge stabilisation method using the DFT/B3LYP was found to be more reliable than the dispersion corrected methods.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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