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Synthesis, Crystal Structure and Properties of Rubidium Dihydrogentricyanomelaminate Semihydrate Rb[H 2 C 6 N 9 ] · 1 / 2 H 2 O
Author(s) -
Jürgens Barbara,
Höppe Henning A.,
Schnick Wolfgang
Publication year - 2004
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200300164
Subject(s) - rubidium , hydrate , raman spectroscopy , crystal structure , crystallography , chemistry , fourier transform infrared spectroscopy , evaporation , single crystal , crystal (programming language) , x ray crystallography , analytical chemistry (journal) , dehydration , molecule , infrared spectroscopy , materials science , diffraction , potassium , physics , organic chemistry , chromatography , quantum mechanics , optics , programming language , biochemistry , computer science , thermodynamics
Rubidium dihydrogentricyanomelaminate semihydrate Rb[H 2 C 6 N 9 ] · 1 / 2 H 2 O was obtained as colorless rod‐like single crystals from a solution of Rb 3 [C 6 N 9 ] · H 2 O and 0.1 M HCl after water evaporation at room temperature. According to the X‐ray single‐crystal structure determination (Rb[H 2 C 6 N 9 ] · 1 / 2 H 2 O: C 2/ c (no. 15), a = 2007.4(3) pm, b = 512.2(1) pm, c = 2168.0(4) pm, β = 111.66(2)°, Z = 8, R 1 = 0.059, 2391 independent reflections, 159 parameters) Rb + and cyclic planar [H 2 C 6 N 9 ] — ions as well as hydrate water molecules occur in the crystal. Rb[H 2 C 6 N 9 ] · 1 / 2 H 2 O was investigated by FTIR and Raman spectroscopy, TG measurements and temperature‐dependent X‐ray powder diffraction. According to the thermoanalytic investigations, dehydration of Rb[H 2 C 6 N 9 ] · 1 / 2 H 2 O starts above 60 °C and is finished below 250 °C.