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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 576 (1989), S. 7-9 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 576 (1989), S. 169-178 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of Li3BiO3For the first time Li3BiO3 was prepared, which crystallizes triclinic in P1with a = 902.38(35) pm, b = 973.02(48) pm, c = 923.53(46) pm, α = 114.069(38)°, β = 89.291(36)°, γ = 107.504(35)°, Z = 8. Parameters were refined by least squares (3565 out of 3969 IO(hkl)), R = 7.86%, RW = 6.93%, MOKα, 4-circle diffractometer, parameters see text.The structure shows an unknown electrostic unfavourable grouping of Bi8O2424- ·8 isolated [BiO3]3--groups are forming a cube with little distortion. The lone electronpairs are pointing inside the heating, the 3 O2- outside, respectively. Powder and single crystals, both colourless, were obtained by heating a mixture of Li2O3 (Li:Bi = 3.1:1, Ag-Bombs, 750°C, 20 d).The Madelung Part of Lattice Energy, MAPLE, and Effective Coordination Numbers, ECoN, the latter by means of Mean Fictive Ionic Radii, MEFIR, are calculated and discussed.
    Notes: Erstmals wurde farbloses Li3BiO3 dargestellt, das triklin, P1, mit a ≡902,38(35) pm, b = 973,02(48) pm, c = 923,53(46) pm, α = 114,069(38)°, β = 89,291(36)°, γ = 107,504(35)°, Z = 8 kristallisiert. Die Parameter wurden nach “least squares” (3565 von 3969 I° (hkl)) verfeinert, R = 7, 86%, Rw = 6,93%, Mokα, Vierkreisdiffraktometer, Parameter siehe Text.Man erhielt Pulver bzw. Einkristalle, beide farblos, durch Tempern inniger Gemenge aus Li2O und Bi2O3 (Li:Bi = 3,1:1, Ag-Bömbchen, 750°C, 20 d). Die Struktur zeigt die neue, “Cluster”-artige, elektrostatisch ungünstige Gruppierung Bi8O2424-: Von jeweils 8 isolierten [Bio3]3--Einheiten bilden deren Bi3+ einen nur leicht verzerrten Würfel. “Freie Elektronenpaare” deuten dabei in das Innere dieses Würfels, die jeweils 3 O2- weisen entsprechend nach außen. Der Madelunganteil der Gitterenergie, MAPLE [2], sowie Effektive Koordinationszahlen, ECoN [2], diese über Mean Fictive Ionic Radii MEFIR werden berechnet und diskutiert.
    Additional Material: 4 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 580 (1990), S. 50-56 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Fluorides with Divalent Iron: On the Structure of CsFeF3By „reaction with the wall“ according to 3 CsF + 2 FeF3 + Fewall = 3 CsFeF3 we obtained for a first time colourless single crystals of CsFeF3. The lattice constants were redetermined with a = 616.39(6) pm, c = 1487.02(15) pm (Four circle diffractometer PW 1100, AgK\documentclass{article}\pagestyle{empty}\begin{document}$ \bar \alpha $\end{document}, R = 4.33%, Rw = 2.79%). CsFeF3 crystallizes isotypic to BaTiO3 in the space group P63/m mc. Parameters see text.The Madelung Part of Lattice Energy, MAPLE, and the „Effective Coordination Numbers“, ECoN, via the „Mean Fictive Ionic Radii“, MEFIR, are calculated and discussed.
    Notes: Durch „Reaktion mit der Wand“ gelang es, erstmals unter striktem Ausschluß von Sauerstoff, gemäß 3 CsF + 2 FeF3 + FeWand = 3 CsFeF3 farblose Einkristalle von CsFeF3 zu erhalten. Die Gitterkonstanten wurden mit a = 616,39(6), c = 1487,02(15) pm (Vierkreisdiffraktometer PW 1100, AgK\documentclass{article}\pagestyle{empty}\begin{document}$ \bar \alpha $\end{document}, R = 4,33% und Rw = 2,79%) neu bestimmt. CsFeF3 kristallisiert isotyp zu BaTiO3(hexagonal) in der Raumgruppe P63/mmc. Parameter siehe Text.Der Madelunganteil der Gitterenergie, MAPLE, sowie „Effektive Koordinationszahlen“, ECoN, werden über „Mittlere Fiktive Ionenradien“, MEFIR, berechnet und diskutiert.
    Additional Material: 8 Tab.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 554 (1987), S. 34-42 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Oxouranate(VI): K2Li4[UO6]. With a Remark about Rb2Li4[UO6] and Cs2Li4[UO6]For the first time K2Li4UO6 has been prepared by an exchange reaction of α-Li6UO6 with K2O [K:U = 2.0:1, sealed au-tube; 750°C; 30 d single crystals; 680°C, 10 d powder]. The irregular shaped single crystals, which are of yellow color and sensitive to moisture crystallize in P3m1 (Z = 1) with a = 619.27(5), c = 533.76(6) pm. The structure determination (PW 1100, AgKα R = 4.80%, Rw = 4.81% for 220 unique reflexions) reveals a new type of structure. The characteristic elements are the isolated group [UO6] and the C.N. = 12 for K+. While Li(1) has a nearly regular square of 4 O2- as coordination polyhedron, Li(2) is octahedrally surrounded.The Madelung Part of Lattice Energy (MAPLE) is calculated and discussed.In addition to K2Li4[UO6] the new oxides Rb2Li4[UO6] and Cs2Li4[UO6] are prepared as pale yellow powders which are little sensitive to moisture (both: au-tube, 680°C, 10 d). According to powder datas both compounds are isotypic with K2Li4[UO6] [Rb2Li4[UO6]: a = 622.91(5), c = 535.93(6) pm; Cs2Li4[UO6]: a = 626.70(6), c = 539.92(6) pm].
    Notes: K2Li4UO6 wurde erstmals dargestellt durch Austauschreaktion von α-Li6UO6 mit K2O [K: U = 2,0:1, Au-Rohr; Einkristalle 750°C, 30 d; Pulver 680°C, 10 d]. Die unregelmäßigen, gegen Luftfeuchtigkeit empfindlichen gelben Einkristalle kristallisieren in P3)m1 (Z = 1) mit a = 619,27(5), c = 533,76(6) pm. Nach der Strukturaufklärng (PW 1100, AgKα, R = 4,80%, Rw = 4,81% für 220 I0(hkl) liegt ein neuer Strukturtyp vor, für den neben der isolierten Gruppe [UO6] die C.N. = 12 für K+ charakteristisch ist. Vier O2- koordinieren Li(1) planar, sechs O2- Li(2) oktaedrisch.Der Madelunganteil der Gitterenergie, MAPLE wird berechnet und diskutiert.Analog konnten erstmals Rb2Li4UO6 und Cs2Li4UO6 als blaßgelbe, wenig feuchtigkeitsempfindliche Pulver dargestellt werden (jeweils Au-Rohr, 680°C, 10 d). Nach Pulverdaten sind beide mit K2Li4UO6 isotyp [Rb2Li4UO6: a = 622,91(5), c = 535,93(6) pm; Cs2Li4UO6: a = 626,70(6), c = 539,92(6) pm].
    Additional Material: 5 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 594 (1991), S. 87-94 
    ISSN: 0044-2313
    Keywords: Potassium Sodium Oxoberyllate ; Single Crystal Structure ; Schlegel Diagrams ; MAPLE Calculations ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On K2Na4[O2BeOBeO2]For the first time colourless single crystals of K2Na4[Be2O5] which are isotypic with K2Na4[Co2O5] [2] and Rb2Na4[Co2O5] have been prepared by heating e.g. a well ground mixture of K2O, Na2O and BeO (K:Na:Be = 2.2:4.4:2; 750°C; 21 d; Ni-tube). The crystal structure was solved by four-circle diffractometer data [Siemens AED 2; 389 Io(hkl); space group P42/mnm; Z = 2; a = 595.17(4) pm, c = 1 002.66(9) pm; R = 4.1%; Rw = 2.3%].Mean Fictive Ionic Radii, MEFIR, Effective Coordination Numbers, ECoN, the Madelung Part of Lattice Energy, MAPLE, and the charge distribution are calculated.
    Notes: Erstmals wurde K2Na4[Be2O5], mit K2Na4[Co2O5] [2] und Rb2Na4[Co2O5] isotyp, in Form farbloser Einkristalle aus Gemengen von K2O, Na2O und BeO (K:Na:Be=2,2:4,4:2; 750°C; 21 d; Ni-Bombe), dargestellt. Die Kristallstruktur wurde über Vierkreisdiffraktometerdaten [Siemens AED 2; 389 Io(hkl); Raumgruppe P42/mnm; Z = 2; a = 595,17(4) pm, c = 1 002,66(9)pm; R = 4,1%; Rw = 2,3%] aufgeklärt. Mittlere Fiktive Ionenradien, MEFIR, Effektive Koordinationszahlen, ECoN, der Madelunganteil der Gitterenergie, MAPLE, sowie die Ladungsverteilung, wurden berechnet.
    Additional Material: 2 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 588 (1990), S. 77-83 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Single Crystal Investigation on AgF2For the first time single crystals of AgF2 (black, metalic bright) have been obtained by heating AgF2 powder under a mixture of HF and F2 in autoclaves at 400°C. It crystallizes orthorhombic in the space group Pbca - D2h15 (Nr. 61) - with a = 556.8(1), b = 583.1(1) and c = 510.1(1) pm; Z = 4.The Madelung Part of Lattice Energy, MAPLE, and the Effective Coordination Number, ECoN, via the Mean Fictive Ionic Radii, MEFIR, are calculated and discussed.
    Notes: Erstmals wurden schwarze, metallisch glänzende Einkristalle von AgF2 durch Erhitzen des mikrokristallinen AgF2 dargestellt (Monel-Autoklaven, T ≈ 400°C, HF/F2-Gemisch, 4 d). Die röntgenographische Untersuchung (a = 556,8(1); = 583,1(1); c = 510,1(1) pm; Z = 4; Parameter siehe Text) bestätigt die aus Neutronenbeugungsuntersuchung ermittelte Raumgruppe Pbca - D2h15 (Nr. 61) und ergibt Lageparameter, die mit den damals ermittelten Werten praktisch übereinstimmen. Der Madelunganteil der Gitterenergie, MAPLE, sowie Effektive Koordinationszahlen, ECoN, werden über Mittlere Fiktive Ionenradien, MEFIR, berechnet und diskutiert.
    Additional Material: 1 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 582 (1990), S. 103-110 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Structure of Na4[TiO4]Na4[TiO4] are formed by reaction of the binary oxides as colourless single crystals [(Na2O:TiO2 = 4.4:1.1; 750°C, 52 d, Ni-tube)], spacegroup P1 with a = 878,3(1) pm, b = 578.5(1) pm, c = 647.6(1) pm, α = 124.24(1)°, β = 102.31(1)°, γ = 95.87(1)° (Guinier-Simon-Data), Z = 4. The crystal-structure was solved by fourcircle-diffractometer data [Philips PW 1100; 1981 Io(hkl); R = 9.22%, Rw = 8.76%]. The Madelung Part of Lattice Energy, MAPLE, and Effective Coordination Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, calculated, are discussed.
    Notes: Na4[TiO4] wurde aus den binären Oxiden in Form farbloser Einkristalle dargestellt [(Na2O:TiO2 = 4,4:1,1; 750°C, 52 d, Ni-Bömbchen)], Raumgruppe P1 mit a = 878,3(1) pm, b = 578,5(1) pm, c = 647,6(1) pm, α = 124,24(1)°, β = 102,31(1)°, γ = 95,87(1)° (Guinier-Simon-Daten), Z = 4. Die Struktur wurde über Vierkreisdiffraktometerdaten [Philips PW 1100; 1981 Io(hkl); R = 9,22%, Rw = 8,76%] aufgeklärt. Der Madelunganteil der Gitterenergie, MAPLE, sowie Effektive Koordinationszahlen. ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, berechnet, werden diskutiert.
    Additional Material: 1 Ill.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 582 (1990), S. 111-120 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Single Crystal Syntheses of Semimetal Complex Fluorides: without Solvents Li2[GeF6] and Na2[GeF6]For the first time we obtained colourless single crystals of Li2GeF6 and Na2GeF6 in a sealed copper tube by reaction of CuF2 with Ge powder of LiF or NaF without solvent. The crystal structure is redeterminated with R = 3.5% and Rw = 3.5% for Li2GeF6 and R = 9.2% and Rw = 6.1% for Na2GeF6. The compounds crystallize isotypic to Na2SiF6 in the space group P321, Z = 3 [Li3GeF6: a = 840.4(1) pm; c = 461.6(1) pm; Fourcircle Diffractometer Siemens AED 2; MoK\documentclass{article}\pagestyle{empty}\begin{document}$ \bar \alpha $\end{document}; 850 Io(hkl) - Na2GeF6: a = 905.8(1) pm; c = 510.7(1) pm; Fourcircle Diffractometer Philips PW 1100; AgK\documentclass{article}\pagestyle{empty}\begin{document}$ \bar \alpha $\end{document}; 1056 Io(hkl)]. The Madelung Part of Lattice Energy, MAPLE, is calculated and compared with MAPLE of the binary components and Cs3GeF7 supplementarily.
    Notes: Erstmals wurden auf „trockenem Wege“ durch Umsetzung von CuF2 mit Ge-Pulver in Gegenwart von LiF bzw. NaF in verschlossenen Cu-Bömbchen farblose Einkristalle von Li2GeF6 erhalten und die Kristallstrukturen verfeinert. Sie kristallisieren isotyp zu Na2SiF6 trigonal, Raumgruppe P321, Z = 3 (a = 840,4(1) pm; c = 461,6(1) pm für Li2GeF6, a = 905,8(1) pm; c = 510,7(1) pm für Na2GeF6). [Li2GeF6: Vierkreisdiffraktometer AED 2, FA. Siemens, MoK\documentclass{article}\pagestyle{empty}\begin{document}$ \bar \alpha $\end{document}, 850 Io(hkl), R = 3,5%, Rw = 3,5%; Na2GeF6: Vierkreisdiffraktometer PW 1100, Fa. Philips, AgK\documentclass{article}\pagestyle{empty}\begin{document}$ \bar \alpha $\end{document}, 1056 Io (hkl), R = 9,2%, Rw = 6,1%]. Der Madelunganteil der Gitterenergie, MAPLE, von Li2GeF6 bzw. Na2GeF6 werden berechnet und mit denen der binären Komponenten sowie mit denen von Cs3GeF7 [2] verglichen.
    Additional Material: 12 Tab.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 589 (1990), S. 129-138 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of K4[SiO4]Colourless crystals of K4[SiO4] which are isotypic with Cs4[SnO4] resulted by heating of well ground mixtures of KO0,55 and SiO2 [K:Si = 4.4: 1.0; 700°C; 7 d] in tightly closed Ni-tubes. The crystal structure was solved by fourcycle-diffractometer data [Siemens AED2, 1814 I0(h kl), space group P21/c with a = 1037.0(3) pm, b = 639.2(1) pm, c = 1036.6(3) pm, β = 112.83(2)°, Z = 4, R = 8.0%, Rw = 4.5%]. The Madelung Part of Lattice Energy, MAPLE, and Effective Coordination Numbers, ECoN, calculated via Mean Fictive Ionic Radii, MEFIR, are given. The isotypism of the compounds mentioned above is compared graphically.
    Notes: Farblose, mit Cs4[SnO4] isotype Kristalle von K4[SiO4], entstehen beim Tempern inniger Gemenge von KO0,55 und SiO2 [K:Si = 4,4:1,0; 700°C 7 d] in fest verschlossenen Ni-Bömbchen. Die Kristallstruktur wurde über Vierkreisdiffraktometerdaten [Siemens AED2, 1814 I0(hkl), Raumgruppe P21/c mit a = 1037,0(3) pm, b = 639,2(1) pm, c = 1036,6(3) pm, β = 112,83(2)°, Z = 4, R = 8,0%, RW = 4,5%] aufgeklärt. Der Madelunganteil der Gitterenergie, MAPLE, sowie Effektive Koordinationszahlen, ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, berechnet, werden angegeben. Ein Isotypievergleich der beiden oben genannten Verbindungen erfolgt graphisch.
    Additional Material: 3 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 560 (1988), S. 35-46 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Lithosilicate: K3LiSiO4 = K3[LiSiO4]The crystal structure of K3LiSoP4 was determined (Four-circle diffractometer data, R = 9.9%, Rw = 4.4%, for parameters see text). The new silicate crystallizes monoclinic (Space group P21/c) with a = 1132.8(4), b = 973.8(2) c = 1177.1(3) pm, β = 121.30(2)°, Z = 8. Characteristic for this structure are chains of edge-sharing tetrahedra, alternating around Si4+ and Li+, parallel [010]. The Madelung Part of Energy, MAPLE, and Effective Coordination-Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, are discussed.
    Notes: Die Kristallstruktur von K3LiSiO4 wurde bestimmt (Vierkreisdiffraktometerdaten, R = 9,9%; Rw = 4,4%, Parameter siehe Text). Das neue Silicat kristallisiert monoklin(Raumgruppe P21/c) mit a = 1132,8(4), b = 973,8(2), c = 1177,1(3) pm, β =121,30(2)°, Z = 8. Strukturbestimmend sind Ketten aus kantenverknüpften Tetraedern, alternierend um Si4+ bzw. Li+, längs [010]. Der Madelunganteil der Gitterenergie, MAPLE, sowie effektive Koordinationszahlen, ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, berechnet, werden diskutiert.
    Additional Material: 3 Ill.
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