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Z. Naturforsch. 2013,
68b, 296 – 300
doi:10.5560/ZNB.2013-3026
Synthesis, Single-crystal Structure and Raman Spectrum of Cu[N(CN)2]2 · 2 NH3
1 Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853-1301, USA
2 Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Reprint requests to Dr. Olaf Reckeweg. Fax: +1-607-255-4137. E-mail:
olaf.reykjavik@gmx.de
Received January 17, 2013 / published online March 20, 2013
Transparent blue crystals of Cu[N(CN)2]2 · 2 NH3 were obtained by blending solutions of Na[N(CN)2] and Cu(NO3)2 · 2.5 H2O in aqueous ammonia and subsequent evaporation of the solvent under ambient conditions. Cu[N(CN)2]2 · 2 NH3 crystallizes in space group P1̅ (no. 2, Z = 2) with the cell parameters a = 746.1(4), b = 747.8(4) and c = 894.4(5) pm, and the angles α = 68.94(2), β = 75.52(1) and γ =68.22(4)°. The presence of the dicyanamide anion and the ammonia molecules was verified by Raman spectroscopy.
Key words: Copper(II), [N(CN)2]2− Anion, Ammonia, Dicyanamide, Raman Spectrum