title: Transformation from [W6O19](2-) to [W6O22](8-) stabilized by Cu(II) complexation.
abstract: A rare [W6O22](8-) fragment has been first captured in aqueous solution of [W6O19](2-) by using a transition-metal complex and isolated as a new compound [Cu4(W6O22)(L1)2(H2O)2]·2H2O (1; L1 = 2-amino-4,6-bis(2-pyridyl)pyrimidine), indicating that [W6O19](2-) could also transform to [W6O22](8-) in aqueous solution besides the earlier proven ψ-metatungstates, [W10O32](4-), β-[(H2)W12O40](6-) and [W7O24](6-).
authors.affiliation: The Institute for Chemical Physics, and Department of Chemistry, Beijing Institute of Technology, Beijing, 100081, China. cwhu@bit.edu.cn.
authors.forename: Feng-Yun
authors.initials: FY
authors.lastname: Cui
authors.forename: Kun-Lin
authors.initials: KL
authors.lastname: Huang
authors.forename: Xiao-Yu
authors.initials: XY
authors.lastname: Ma
authors.forename: Cong
authors.initials: C
authors.lastname: Li
authors.forename: Zhan-Gang
authors.initials: ZG
authors.lastname: Han
authors.forename: Yuan-Zhe
authors.initials: YZ
authors.lastname: Gao
authors.forename: Xi
authors.initials: X
authors.lastname: Liu
authors.forename: Ying-Nan
authors.initials: YN
authors.lastname: Chi
authors.forename: Chang-Wen
authors.initials: CW
authors.lastname: Hu
mesh_terms: D003300:Copper / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D003300:Copper; D010100:Oxygen; D014414:Tungsten