title: Acid-Base-Triggered Structural Transformation of a Polyoxometalate Core Inside a Dodecahedrane-like Silver Thiolate Shell.
abstract: Self-assembly of metavanadate and organosilver(I) salts leads to a novel dodecahedrane-like [Ag30 ((t) BuS)20 ](10+) silver(I) thiolate nanocage that tightly wraps an unusual C2h polyoxovanadate anion. The polyoxovanadate core undergoes transformation to a D3d configuration upon acidification, and reverts back to its original C2h structure upon addition of base. Chromism was observed for the silver(I) thiolate cluster during the configurational change of the central polyoxovanadate core; the color of the solution changes reversibly from green to dark yellow. This work represents the first reported example of chromic polyoxometalate-templated silver(I) thiolate shells that respond to external acid-base stimuli. It also represents an important advance in providing crystallographic proof that structural transformations occur in a nanoscale core-shell cluster.
authors.affiliation: Department of Chemistry, College of Pharmacy, Jiamusi University, Jiamusi, 154004, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Liu
authors.affiliation: Department of Chemistry, College of Pharmacy, Jiamusi University, Jiamusi, 154004, China.
authors.forename: Chao-Yu
authors.initials: CY
authors.lastname: Song
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: Ren-Wu
authors.initials: RW
authors.lastname: Huang
authors.affiliation: Department of Chemistry, College of Pharmacy, Jiamusi University, Jiamusi, 154004, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Chemistry, College of Pharmacy, Jiamusi University, Jiamusi, 154004, China.
authors.forename: Mei-Jia
authors.initials: MJ
authors.lastname: Li
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China. zangsqzg@zzu.edu.cn.
authors.forename: Shuang-Quan
authors.initials: SQ
authors.lastname: Zang
authors.affiliation: Department of Chemistry, College of Pharmacy, Jiamusi University, Jiamusi, 154004, China. gaogg@jmsu.edu.cn.
authors.forename: Guang-Gang
authors.initials: GG
authors.lastname: Gao
keywords: cluster compounds; crystal transformation; host-guest chemistry; polyoxometalates; silver