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(27) X. Pan, Y. Su, X. Chen, Y. Zhao, Y. Li, J. Zuo, and X. Wang,*Stable Tetraaryldiphosphine Radical Cation and Dication, J. Am. Chem. Soc. 2013, 135, 5561–5564.

(26) X. Pan, X. Chen, T. Li, Y. Li, and X. Wang,* Isolation and X-ray Crystal Structures of Triarylphosphine Radical Cations, J. Am. Chem. Soc. 2013, 135, 3414–3417.

(25) X. Chen, X. Wang, Z. Zhou, Y. Li, Y. Sui, J. Ma, X. Wang,* P. P. Power,*Reversible σ-Dimerizations of Persistent Organic Radical Cations, Angew. Chem. Int. Ed. 2013, 52, 589–592.

(24) X. Chen, B. Ma, S. Chen, Y. Li, W. Huang, J. Ma, X. Wang,*Synthesis, Crystal Structure, and Physical Property of Sterically Unprotected Thiophene/Phenylene Co-Oligomer Radical Cations: A Conductive π-π Bonded Supermolecular meso-Helix, Chem. -Asian J. 2013, 8, 238–243.

(23) T. S. Cameron, A. Decken, I. Krossing, J. Passmore,* J. M. Rautiainen,* X. Wang, X. Zeng, Reactions of a Cyclodimethylsiloxane (Me2SiO)6 with Silver Salts of Weakly Coordinating Anions; Crystal Structures of
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