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- W2092244275 abstract "Rubidium dihydrogentricyanomelaminate semihydrate Rb[H2C6N9] · 1/2 H2O was obtained as colorless rod-like single crystals from a solution of Rb3[C6N9] · H2O and 0.1 M HCl after water evaporation at room temperature. According to the X-ray single-crystal structure determination (Rb[H2C6N9] · 1/2 H2O: C2/c (no. 15), a = 2007.4(3) pm, b = 512.2(1) pm, c = 2168.0(4) pm, β = 111.66(2)°, Z = 8, R1 = 0.059, 2391 independent reflections, 159 parameters) Rb+ and cyclic planar [H2C6N9]— ions as well as hydrate water molecules occur in the crystal. Rb[H2C6N9] · 1/2 H2O was investigated by FTIR and Raman spectroscopy, TG measurements and temperature-dependent X-ray powder diffraction. According to the thermoanalytic investigations, dehydration of Rb[H2C6N9] · 1/2 H2O starts above 60 °C and is finished below 250 °C. Synthese, Kristallstruktur und Eigenschaften von Rubidium-dihydrogentricyanomelaminat-Semihydrat Rb[H2C6N9] · 1/2 H2O Rubidium-dihydrogentricyanomelaminat-Semihydrat Rb[H2C6N9] · 1/2 H2O wurde in Form farbloser stäbchenförmiger Kristalle durch Mischen einer Lösung von Rb3[C6N9] · H2O mit 0, 1 M HCl und anschließendes Verdunsten des Lösungsmittels bei Raumtemperatur erhalten. Nach der Einkristallstrukturanalyse (Rb[H2C6N9] · 1/2 H2O: C2/c (Nr. 15), a = 2007, 4(3) pm, b = 512, 2(1) pm, c = 2168, 0(4) pm, β = 111, 66(2)°, Z = 8, R1 = 0, 059, 2391 unabhängige Reflexe, 159 Parameter) liegen im Festkörper Rb+- und cyclische [H2C6N9]—-Ionen sowie Kristallwasser-Moleküle vor. Rb[H2C6N9] · 1/2 H2O wurde mittels FTIR und Raman-Spektroskopie, TG-Messungen sowie temperaturabhängiger Pulver-Röntgenbeugung charakterisiert. Nach den thermoanalytischen Untersuchungen setzt die Dehydratation von Rb[H2C6N9] · 1/2 H2O bei 60 °C ein und ist bis 250 °C abgeschlossen." @default.
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- W2092244275 date "2004-01-01" @default.
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- W2092244275 title "Synthesis, Crystal Structure and Properties of Rubidium Dihydrogentricyanomelaminate Semihydrate Rb[H2C6N9]·1/2 H2O" @default.
- W2092244275 doi "https://doi.org/10.1002/zaac.200300164" @default.
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