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  • 1
    Electronic Resource
    Electronic Resource
    Eine neue Verbindung vom M5TiB2O10-Typ mit geordneter Metallverteilung: Ni5SnB2O10 (1989)
    Springer
    Monatshefte für Chemie 120 (1989), S. 85-89 
    Details
    ISSN: 1434-4475
    Keywords: Nickel ; Tin ; Boron ; Oxide ; Crystal structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The unknown compound Ni5SnB2O10, prepared by using a flux of excess B2O3, was investigated by single crystal X-ray technique. It crystallizes with orthorhombic symmetry, space group D 2h 16 — Pnma witha=9.302,b=6.089,c=12.280 Å,Z=4. The mean result of this investigation is a hitherto unobserved strictly ordered metal distribution. Ni5SnB2O10 is not isotypic but related to Ni5TiB2O10.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808749
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  • 2
    Electronic Resource
    Electronic Resource
    CuTb[B5O10]: Das erste „Metaborat“ mit einem ∞1[B5O10]5- -Anion (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 567-570 
    Details
    ISSN: 0044-2313
    Keywords: Copper terbium borate ; synthesis ; crystal structure ; X-ray-diffraction ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: CuTb[B5O10]: The first “Metaborate” with a ∞1[B5O10]5- AnionSingle crystals of the new compound CuTb[B5O10] were obtained by a B2O3 flux-technique. They crystallize in a so far unknown structure. X-ray investigations on single crystals led to the space group C2v21-I ba2 (Nr. 45); a = 6.294(1) Å; b = 8.406(8) Å; c = 12.733(2) Å; Z = 4. The structure contains ∞1[B5O10]5- chains isolated from each other. These chains include twelf membered rings of boron and oxygen. Each ring consists of two tetrahedral BO4 and two planar B2O5 groups and is connected with the next one via the BO4 units. Tb3+ is eightfold- and Cu2+ elongated octahedraly coordinated by oxygen.
    Notes: Aus einer B2O3-Schmelze entstanden hellbraune, transparente Einkristalle von CuTb[B5O10] mit völlig neuartigem Kristallstrukturtyp. Röntgenographische Untersuchungen an Einkristallen ergaben die Raumgruppe C2v21-Iba2 (Nr. 45); a = 6,294(1) Å; b = 8,406(8) Å; c = 12,733(2) Å; Z = 4. Die Struktur weist voneinander isolierte ∞1[B5O10]5--Ketten auf. Diese Ketten enthalten Bor-Sauerstoff-Zwölfringe, die jeweils aus zwei tetraedrischen BO4- und zwei planaren B2O5-Baugruppen gebildet werden. Die Verknüpfung der Ringe untereinander geschieht über die BO4-Baugruppe. Tb3+ ist achtfach und Cu2+ elongiert oktaedrisch von Sauerstoff umgeben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210413
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Kristallstruktur von Cu2M(BO3)O2 (M = Fe3+, Ga3+) (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 571-575 
    Details
    ISSN: 0044-2313
    Keywords: Copper ; iron ; gallium ; borate ; oxide ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of Cu2M(BO3)O2 (M = Fe3+, Ga3+)Single Crystals of the compounds Cu2M(BO3)O2 (M = Fe3+ (I), Ga3+ (II)) were obtained by a B2O3 flux-technique. They crystallize in a monoclinic distorted variant of a Ludwigite structure with a partly ordered metal distribution. X-ray investigations on single crystals led to the space group C2h5-P21/c (No. 14); I: a = 3.108(1); b = 12.003(1); c = 9.459(3) Å; b̃ = 96.66(3)°; Z = 4 and II: a = 3.1146(2); b = 11.921(3); c = 9.477(2) Å; b̃ = 97.91(2)°; Z = 4. All metal-sites are distorted octahedraly coordinated by oxygen-ions. The structure contains isolated planar BO3-units and oxygen which is not coordinated to boron.
    Notes: Aus einer B2O3-Schmelze gelang die Synthese von Einkristallen der Substanzen Cu2M(BO3)O2 (M = Fe3+ (I), Ga3+ (II)), die isotyp zueinander sind und in einer monoklin verzerrten Strukturvariante eines Ludwigites mit teilweise geordneter Metallverteilung kristallisieren. Röntgenographische Untersuchungen an Einkristallen ergeben die Raumgruppe C2h5-P 21/c (Nr. 14) mit I: a = 3,108(1); b = 12,003(1); c = 9,459(3) Å; b̃ = 96,66(3)°; Z = 4 und II: a = 3,1146(2); b = 11,921(3); c = 9,477(2) Å; b̃ = 97,91(2)°; Z = 4. Die Metallkationen sind verzerrt oktaedrisch von Sauerstoffionen koordiniert. Die Struktur weist sowohl isolierte, planare BO3-Baugruppen als auch nicht an Bor gebundenen Sauerstoff auf.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210414
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