Journalartikel

Jahr der Veröffentlichung: 1994

Seiten: 1495-1508

Zeitschrift: Journal of Inorganic and General Chemistry

Bandnummer: 620

Heftnummer: 9

ISSN: 0044-2313

Verlag: Wiley

Abstract: 

Single crystals of the new silicates CsKNaLi9{Li[SiO4]}4, CsKNa2Li8{Li[SiO4]}4, RbNa3Li8{Li[SiO4]}4 and RbNaLi4{Li[SiO4]}2 as well as powder (Rb-containing compounds only) were obtained for the first time. The samples were prepared by heating well ground mixtures of the binary oxides in Ni and Ag tubes, respectively. The structure determination was carried out by four-circle diffractometer data (MoKalpha radiation; Siemens AED 2):

CsKNaLi9{Li[SiO4]}4: tetragonally prismatic crystals, light yellow; 726 I0(hkl), R = 4.4%, R(w) = 2.8%; a = 1102.0(6), c = 637.9(5) pm; Z = 2; space group I4/m; 2 CsO0.55 + Li4TlO4 + glas (560-degrees-C, 15 d)

CsKNa2Li8{Li[SiO4]}4: tetragonally prismatic crystals, light yellow; 727 I0(hkl), R = 4.4%, R(w) = 2.6%; a = 1103.5(7), c = 637.7(4) pm; Z = 2; space group I4/m; 1.1CsO0.61 + 1.1 KO0.55 + 1.4 NaO0.52 + 6.5 Li2O + 4 SiO2 (600-degrees-C, 60 d)

RbNa3Li8{Li[SiO4]}4: tetragonally prismatic crystals, colourless; 600 I0(hkl), R = 2.3%, R(w) = 2.0%; a = 1092.08(6), c = 632.76(4) pm; Z = 2; space group I4/m; 4 RbO0.57 + 3 NaO0.52 + 6.5 Li2O + 4 SiO2 (650-degrees-C, 63 d)

RdNaLi4{Li[SiO4]}2: monoclinic, ball-shaped, colourless; 1224 I0(hkl), R = 3.1%, R(w) = 3.1%; a = 1573.10(13), b = 630.48(5), c = 781.25(8) pm, b = 90.566(8)degrees; Z = 4; space group C2/m; 1.1 RbO0.52 + 1.2 NaO0.45 + 5 Li2O + 4SiO2 (700-degrees-C, 40 d).

Harvard-Zitierstil: HOFMANN, J., BRANDES, R. and HOPPE, R. (1994) MORE SILICATES WITH STUFFED PYRGOMS - CSKNALI9(LI[SIO4])4, CSKNA2LI8(LI[SIO4])4, RBNA3LI8(LI[SIO4])4 [1] AND RBNALI4(LI[SIO4])2 [2], Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry, 620(9), pp. 1495-1508

APA-Zitierstil: HOFMANN, J., BRANDES, R., & HOPPE, R. (1994). MORE SILICATES WITH STUFFED PYRGOMS - CSKNALI9(LI[SIO4])4, CSKNA2LI8(LI[SIO4])4, RBNA3LI8(LI[SIO4])4 [1] AND RBNALI4(LI[SIO4])2 [2]. Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry. 620(9), 1495-1508.