[Ag(NH3)(2)]ClO4: Crystal structures, phase transition, and vibrational spectra

Peter Nockemann, G. Meyer

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

[Ag(NH3)(2)](ClO4) is obtained from a solution of AgClO4 in cone. 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(NH3)(2)](+), stacked in a staggered conformation and of tetrahedral (ClO4)(-) 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, beta = 97.436(5)degrees, 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.
Original languageEnglish
Pages (from-to)1636-1640
Number of pages5
JournalZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Volume628
Publication statusPublished - 2002

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