[AG(NH 3) 2]ClO 4: Kristallstrukturen, phasenumwandlung, schwingungsspektren

Translated title of the contribution: [AG(NH 3) 2]ClO 4: Crystal structures, phase transition, and vibrational spectra

Peter Nockemann, Gerd Meyer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

[Ag(NH 3) 2](ClO 4) is obtained from a solution of AgClO 4 in conc. ammonia as colourless single crystals (orthorhombic, Pnmn, Z = 4, a = 795.2(1) pm, b = 617.7(1) pm, c = 1298.2(2) pm, R all = 0.0494). The structure consists of linearly coordinated cations, [Ag(NH 3) 2] +, stacked in a staggered conformation and of tetrahedral (ClO 4) - anions. A first order phase transition was observed between 210 and 200 K and the crystal structure of the low-temperature modification (monoclinic, P2/m, Z = 4, a = 789.9(5) pm, b = 604.1(5) pm, c = 1290.4(5) pm, β = 97.436(5)°, at 170 K, R all = 0.0636) has also been solved. Spectroscopic investigations (IR/Raman) have been carried out and the assignment of the spectra is discussed.

Translated title of the contribution[AG(NH 3) 2]ClO 4: Crystal structures, phase transition, and vibrational spectra
Original languageGerman
Pages (from-to)1636-1640
Number of pages5
JournalZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Volume628
Issue number7
DOIs
Publication statusPublished - 17 Aug 2002
Externally publishedYes

Keywords

  • Ammines
  • Perchlorates
  • Phase transition
  • Silver

ASJC Scopus subject areas

  • Inorganic Chemistry

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