title: Gold(I) eta2-arene complexes.
abstract: The reaction of 9-{[N-n-propyl-N-(diphenylphosphino)amino]methyl}anthracene (1) with Au(SMe2)Cl yields complex 2 with an arm-opening configuration. The latter is treated with AgClO4 to form complex 4 and then respectively reacted with acetonitrile, pyridine, and triphenylphosphine sulfide to afford novel gold(I) eta2-arene complexes 3a-c, which have arm-closing configurations and feeble or weak fluorescence emissions. The observation can be attributed to charge transfer from the anthracene unit to the Au+ ion. When the solution of 3a or 4 in CH2Cl2 was added with 1 equiv of Ph3P, complex 5 with the arm-opening configuration was formed and strong emission was restored.
authors.affiliation: State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China.
authors.forename: Qing-Shan
authors.initials: QS
authors.lastname: Li
authors.forename: Chong-Qing
authors.initials: CQ
authors.lastname: Wan
authors.forename: Ru-Yi
authors.initials: RY
authors.lastname: Zou
authors.forename: Feng-Bo
authors.initials: FB
authors.lastname: Xu
authors.forename: Hai-Bin
authors.initials: HB
authors.lastname: Song
authors.forename: Xiang-Jian
authors.initials: XJ
authors.lastname: Wan
authors.forename: Zheng-Zhi
authors.initials: ZZ
authors.lastname: Zhang