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- W2783149370 endingPage "3463" @default.
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- W2783149370 abstract "Molecular and electronic structure, reduction electron transfer and coordination abilities of a polycyclic aromatic hydrocarbon (PAH) having a planar naphtho-group fused to the corannulene bowl have been investigated for the first time using a combination of theoretical and experimental tools. A direct comparison of naphtho[2,3-a]corannulene (C28H14, 1) with parent corannulene (C20H10, 2) revealed the effect of framework topology change on electronic properties and aromaticity of 1. The presence of two reduction steps for 1 was predicted theoretically and confirmed experimentally. Two reversible one-electron reduction processes with the formal reduction potentials at −2.30 and −2.77 V versus Fc+/0 were detected by cyclic voltammetry (CV) measurements, demonstrating accessibility of the corresponding mono- and dianionic states of 1. The products of the singly and doubly reduced napththocorannulene were prepared using chemical reduction with Group 1 metals and isolated as sodium and rubidium salts. Their X-ray diffraction study revealed the formation of “naked” mono- and dianions crystallized as solvent-separated ion products with one or two sodium cations as [Na+(18-crown-6)(THF)2][C28H14−] and [Na+(18-crown-6)(THF)2]2[C28H142−] (3⋅THF and 4⋅THF, respectively). The dianion of 1 was also isolated as a contact-ion complex with two rubidium countercations, [{Rb+(18-crown-6)}2(C28H142−)] (5⋅THF). The structural consequences of adding one and two electrons to the carbon framework of 1 are compared for 3, 4 and 5. Changes in aromaticity and charge distribution stemming from the stepwise electron acquisition are discussed based on DFT computational study." @default.
- W2783149370 created "2018-01-26" @default.
- W2783149370 creator A5017521057 @default.
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- W2783149370 date "2018-02-14" @default.
- W2783149370 modified "2023-10-02" @default.
- W2783149370 title "Fusing a Planar Group to a π‐Bowl: Electronic and Molecular Structure, Aromaticity and Solid‐State Packing of Naphthocorannulene and its Anions" @default.
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