title: Synthesis, structure, and properties of benzoquinone dimer and trimers bearing t-Bu substituents.
abstract: Highly soluble and stable quinone dimer and trimers were successfully yielded by introduction of t-Bu substituents. In X-ray structure analysis, the dimer quinone moiety was distorted into the boat shape, which was clarified by MO calculations. X-ray and UV/vis studies indicated that the covalently linked quinone moieties bear a large torsional angle. Nevertheless, the reduction potentials rose significantly with the order of monomer < dimer < trimer, indicating that the negative charge was efficiently delocalized within the radical anions.
authors.affiliation: Graduate School of Science and Engineering, University of Toyama, Gofuku, Toyama 9308555, Japan.
authors.forename: Naoto
authors.initials: N
authors.lastname: Hayashi
authors.forename: Takahiro
authors.initials: T
authors.lastname: Yoshikawa
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ohnuma
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Higuchi
authors.forename: Katsuya
authors.initials: K
authors.lastname: Sako
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Uekusa
mesh_terms: D016227:Benzoquinones / Q000138:chemical synthesis / Q000737:chemistry*; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014961:X-Ray Diffraction
chemical_list: D016227:Benzoquinones; D011108:Polymers