A molecular picture of metal ion solvation: Infrared spectroscopy of Cu+(NH3)n and Ag+(NH3)n in the gas phase

Kazuhiko Ohashi, Kazuya Inoue, Takuro Iino, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya

Research output: Contribution to journalArticle

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Abstract

Infrared spectroscopy is applied to mass-selected Cu+(NH3)n and Ag+(NH3)n in the gas phase for investigating coordination chemistry of ammonia solvated noble-metal ions. The Cu+(NH3)3 ion prefers a three-coordinated structure but two-coordinated isomers are of growing importance until becoming predominant at n = 8 and 9. The first shell of the Ag+ ion is filled with four NH3 molecules and the resulting tetrahedral Ag+(NH3)4 complex is solvated by subsequent NH3 molecules through hydrogen bonding. A coordination number of 2 for Cu+ can be ascribed to extensive 4s-3d hybridization in Cu+, which causes the twofold linear coordination. A larger coordination number of 4 for Ag+ can be attributed to its larger ionic size and more importantly to inefficient 5s-4d hybridization in Ag+.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalJournal of Molecular Liquids
Volume147
Issue number1-2
DOIs
Publication statusPublished - Jul 20 2009

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Solvation
coordination number
Metal ions
solvation
Infrared spectroscopy
metal ions
Gases
infrared spectroscopy
Ions
vapor phases
Molecules
Precious metals
noble metals
Ammonia
Isomers
molecules
ammonia
Hydrogen bonds
ions
isomers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

A molecular picture of metal ion solvation : Infrared spectroscopy of Cu+(NH3)n and Ag+(NH3)n in the gas phase. / Ohashi, Kazuhiko; Inoue, Kazuya; Iino, Takuro; Sasaki, Jun; Judai, Ken; Nishi, Nobuyuki; Sekiya, Hiroshi.

In: Journal of Molecular Liquids, Vol. 147, No. 1-2, 20.07.2009, p. 71-76.

Research output: Contribution to journalArticle

Ohashi, Kazuhiko ; Inoue, Kazuya ; Iino, Takuro ; Sasaki, Jun ; Judai, Ken ; Nishi, Nobuyuki ; Sekiya, Hiroshi. / A molecular picture of metal ion solvation : Infrared spectroscopy of Cu+(NH3)n and Ag+(NH3)n in the gas phase. In: Journal of Molecular Liquids. 2009 ; Vol. 147, No. 1-2. pp. 71-76.
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