| 1 | Author
| J. Feldmann, Hk Miiller-Buschbaum | Requires cookie* | | Title
| Kristallstrukturuntersuchung an einem Strontium-Vanadyl-Vanadat: Sr2(V 0 )V 20 8 Crystal Structure Investigation of the Strontium Vanadyl-Vanadate: Sr2( V 0 ) V 20 8  | | | Abstract
| Single crystals of Sr2(V 0)V 20 8 have been prepared by quenching melts from higher tem peratures. This compound represents a new structure type and crystallizes with monoclinic symmetry, space group C |h-I 2 la, a = 6.929, b = 16.246, c = 7.260 A, ß = 115.82°, Z = 4. The point positions occupied by V5+ show tetrahedral coordination. The refinement of the V4+ position led to split positions with acentric orientations of V4+ in the octahedral O2-surrounding. It results in a square pyramidal coordination with one short V -O distance typically for vanadyl groups. | | |
Reference
| (Z. Naturforsch. 50b, 43—46 [1995]; eingegangen am 8. Juli 1994) | | |
Published
| 1995 | | |
Keywords
| Strontium, Vanadium Oxide, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-0043.pdf | | | Identifier
| ZNB-1995-50b-0043 | | | Volume
| 50 | |
2 | Author
| H., M. Üller-Buschbaum, L. Walz | Requires cookie* | | Title
| Einkristallröntgenstrukturanalyse an Quecksilberchromat(VI)  | | | Abstract
| g 3 0 2 C r 0 4 Single C rystal X -Ray S tructure D eterm ination of a M ercury C hrom ate(V I): H g30 2C r 0 4 Th. H an sen , H k. Single crystals of Hg3C r0 6 have been prepared by high pressure techniques (3600 bar oxygen, 600 °C). Hg3C r06 crystallizes with trigonal symmetry, space group D |-P 3 212, a = 7.137(1), c = 10.017(2)Ä, Z -3. Nearly linear O -H g -O dumb-bells are connected in planes, forming strongly puckered nets of six-membered rings. Each Hg60 6 ring is centered by a C r04 tetrahedron; the C r04 tetrahedra are arranged in two equally occupied split positions. | | |
Reference
| (Z. Naturforsch. 50b, 47—5 [1995]; eingegangen am 2. August 1994) | | |
Published
| 1995 | | |
Keywords
| Mercury, Chromium, Oxide, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-0047.pdf | | | Identifier
| ZNB-1995-50b-0047 | | | Volume
| 50 | |
3 | Author
| E. Peters, Hk Müller-Buschbaum | Requires cookie* | | Title
| Ein Titan-Tantaloxid mit Ti11: Ti0 ,3 3 Ta0 ,6 7O2 (TiTa20 6)  | | | Abstract
| Black single crystals o f Tio^Tao 670 2 have been prepared by C 0 2-LA SER techniques heating a mixture of TiO and Ta20 5 to T > 2000 °C. The titanium tantalum oxide crystallizes with tetragonaj symmetry, space group D 4 h -P 4 2/mnm, lattice constants a = 4.7344(6) A, c = 3.0504(2) A , Z = 2. Ti().33Ta0.67O 2 represents the compound TiTa20 6 with rutile structure because of the statistical distribution of Ti2+ and Ta5+. The composition of rutile-type com pounds is discussed in more general terms. | | |
Reference
| Z. Naturforsch. 50b, 1167—1170 (1995); eingegangen am 16. Januar 1995 | | |
Published
| 1995 | | |
Keywords
| Titanium, Tantalum, Oxide, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-1167.pdf | | | Identifier
| ZNB-1995-50b-1167 | | | Volume
| 50 | |
4 | Author
| V. Ikto, R. Keimes, A. Lb Rech, M. Ewis | Requires cookie* | | Title
| M g6N i16A s7 -a N ew G Phase  | | | Abstract
| Mg6N i16A s7 (F m 3m ; a = 11.479(1) Ä; Z = 4) was prepared by heating a mixture of the ele ments and investigated by m eans of single crystal X-ray methods. The arsenide crystallizes in a m o dified Th6Mn23 type structure, similar to many ternary com pounds of the com position A 6M 16X 7, called G phases. | | |
Reference
| Z. Naturforsch. 50b, 1275—1276 (1995); eingegangen am 6. März 1995 | | |
Published
| 1995 | | |
Keywords
| Ternary Nickelarsenide, Magnesium, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-1275_n.pdf | | | Identifier
| ZNB-1995-50b-1275_n | | | Volume
| 50 | |
5 | Author
| T. Gressling, Hk Müller-Buschbaum | Requires cookie* | | Title
| Zur Kristallstruktur von Ce2(W 0 4)3 On the Crystal Structure of Ce2(W 0 4)3  | | | Abstract
| Single crystals of Ce2(W 0 4)3 have been prepared by crystallisation from molten mixtures of W 0 3 and C e 0 2. The compound shows m onoclinic symmetry, a = 7.813(4), b = 11.720(2), c = 11.586(3), ß = 109.36(3)°, Z = 4, and is isotypic to Eu2(W 0 4)3, but shows large differences of the atomic coordinates especially of oxygen. The crystal structure of Ce2(W 0 4)3 is charac terized by W (1)0 4 tetrahedra, square W (2)0 5 pyramids and a distorted capped trigonal prism of oxygen around cerium. The decrease o f the oxidation states of C e4+ or W6+ was proved by thermogravimetric and magnetic measurements as well as by calculations of the Coulomb terms of lattice energy. | | |
Reference
| Z. Naturforsch. 50b, 1513—1516 (1995); eingegangen am 25. Mai 1995 | | |
Published
| 1995 | | |
Keywords
| Cerium, Tungsten, Oxygen, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-1513.pdf | | | Identifier
| ZNB-1995-50b-1513 | | | Volume
| 50 | |
6 | Author
| Z. Naturforsch | Requires cookie* | | Title
| K34[Zn2oIn85]: Eine ternäre Auffüllungsvariante des /?-rhomboedrischen Bors  | | | Abstract
| In the crystal structure of K34[Zn2()In85] (a = 1827.7(5) pm, c = 3980.5(8) pm, R3m , Nr. 166, Z = 3, R1 = 0.056, wR2 = 0.124) the In and Zn atoms form the /3-rhombohedral boron structure. The structure contains In84 Samson polyhedra, and clusters of 18 In and 10 Zn atoms, forming three In12 icosahedra sharing two common triangular faces. The potassium atoms occupy the centres of truncated tetrahedra -forming the Samson polyhedra -and Kasper polyhedra. | | |
Reference
| (Z. Naturforsch. 50b, 23 [1995]; eingegangen am 16. Juni 1994) | | |
Published
| 1995 | | |
Keywords
| Crystal Structure, Intermetallic Compound, Potassium, Zinc, Indium | | |
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| default:Reihe_B/50/ZNB-1995-50b-0023.pdf | | | Identifier
| ZNB-1995-50b-0023 | | | Volume
| 50 | |
7 | Author
| F.-DM. Artin, H.K M Üller-B, Uschbaum | Requires cookie* | | Title
| Eine synthetische Spezies zum Mineral Howardevansit mit Eisen anstelle von Kupfer: NaFe3V 30 12  | | | Abstract
| Single crystals of NaFe3V30 12 have been prepared by solid state reaction below the melt ing point of the reaction mixture. This compound is isotypic to the mineral Howardevansite but shows lower triclinic symmetry, space group C }-P 1 , a = 6.757(2), b = 8.155(2), c = 9.816(3) Ä, a = 106.05(2), ß = 104.401(9), y = 102.09(2)°, Z = 2. The acentric space group is caused by the sodium positions, all other atoms comply with the space group PI of Howarde vansite. The different ions are coordinated by O2-forming V 0 4 tetrahedra, FeOfi octahedra, trigonal FeOs bipyramids and irregular NaOs and NaOy polyhedra, respectively. The crystal chemistry is discussed with respect to Howardevansite. | | |
Reference
| (Z. Naturforsch. 50b, 51—55 [1995]; eingegangen am 5. August 1994) | | |
Published
| 1995 | | |
Keywords
| Sodium, Iron, Vanadium, Oxide, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-0051.pdf | | | Identifier
| ZNB-1995-50b-0051 | | | Volume
| 50 | |
9 | Author
| E. Klüver, Hk Müller-Buschbaum | Requires cookie* | | Title
| Uber einen Lanthanoid-Mangan-Apatit: Nd4M n(Si04)30 On a Lanthanoid Manganese Apatite: Nd4M n(S i04)30  | | | Abstract
| Single crystals of Nd4M n (S i0 4)30 have been prepared by a Bi20 3 flux in closed copper tubes. The colourless crystals show hexagonal symmetry, space group C |h-P 6 3/m, a -9,4986(9), c = 6,944(2) A, Z = 2. Nd4M n (S i0 4)30 crystallizes in the A patite structure and shows Nd3+ and Mn2+ with partly statistical distribution. A s a consequence of this, 0 (2) and 0 (4) are occupying split positions. | | |
Reference
| (Z. Naturforsch. 50b, 61 [1995]; eingegangen am 25. Juli 1994) | | |
Published
| 1995 | | |
Keywords
| Neodymium, Manganese, Silicon, Apatite, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-0061.pdf | | | Identifier
| ZNB-1995-50b-0061 | | | Volume
| 50 | |
10 | Author
| FrankW. Heinemann, Helm Ut, Hartung, NadjaM. Aier | Requires cookie* | | Title
| Kristall-und Molekülstruktur von 2-[3-(N,N-Diethylammonium)propylimino]-2-phenyl-dithioacetat Crystal and Molecular Structure of 2-[3-(N,N-Diethylammonium)propylimino]-2-phenyl-dithioacetate  | | | Abstract
| The title compound, formed by the reaction o f acetophenone with 3-diethylamino-1-propylamine and sulfur, crystallizes in the orthorhombic space group P 2 12 12 1 (Z = 4) with lattice constants a = 818.1(2) pm, b -1225.1(2) pm and c = 1622.4(4) pm. The characterization of the molecule as a zwitterion is established by the observed bond parameters. Both spec troscopic investigations and the results of the X-ray structure determination show that a hydrogen atom is bonded to the amino nitrogen rather than to the imino nitrogen. | | |
Reference
| (Z. Naturforsch. 50b, 81—8 [1995]; eingegangen am 9. August 1994) | | |
Published
| 1995 | | |
Keywords
| Dithioacetates, A cetophenone, Crystal Structure, Zwitterion, Betaine | | |
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| default:Reihe_B/50/ZNB-1995-50b-0081.pdf | | | Identifier
| ZNB-1995-50b-0081 | | | Volume
| 50 | |
12 | Author
| Andreas Puder3, Joachim Fuchs3, D. Ieter Lentz3, KlausR. Othb | Requires cookie* | | Title
| Das erste cyclische Isopolyoxoanion aus Oktaederbausteinen  | | | Abstract
| Synthese und Strukturbestimmung von Kaliumhexatellurat(VI) K8Te6O17(OH)10.1/2 KOH • 16 H20 The First Cyclic Isopolyoxo Anion Built from Octahedra. The Structure of the Potassium hexatellurate(VI) K8Te6O 1 7 (O H) 10 • 1/2 KOH • 16 H 20 The crystal structure of the potassium hexatellurate(VI) K8Te6O 17(O H)10-1/2K O H -16H 20 features a cyclic polyoxotellurate anion with six octahedral T e 0 6 units condensed through alternate sharing of edges and vertices. | | |
Reference
| (Z. Naturforsch. 50b, 91—9 [1995]; eingegangen am 13. April 1994) | | |
Published
| 1995 | | |
Keywords
| Polyoxo Anions, Tellurates(VI), Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-0091.pdf | | | Identifier
| ZNB-1995-50b-0091 | | | Volume
| 50 | |
13 | Author
| Klaus Diem, Thomas Hahn, Wilhelm Kuchen+, DietrichM. Ootz+, WolfgangPeter Poll, Tommes | Requires cookie* | | Title
| Kristallstruktur von (CO)5CrPH2COOH und ab m/r/ö-Berechnung des hypothetischen freien Liganden [H2PCOOH]2 -ein Vergleich Crystal Structure of (C O )5CrPH2CO O H and ab initio Calculation of the Hypothetical Free Ligand [H2PC O O H ] 2 -a Comparison  | | | Abstract
| Crystal structure analysis of (C O)5CrPH2COOH (a = 1338.2, b = 622.6, c = 1161.5 pm, ß = 96,77°, P 2 1/c, Z = 4, R -0.0330) has shown the complex to be dimerized via hydrogen-bonds of the COOH group. Geom etrical parameters of the hypothetical free ligand [H2PCO O H ]2 were calculated using the HF/3-21 G*, HF/6-31G** and MP2-FU/6-31 G** basis sets. Bond lengths and bond angles o f the calculated free ligand are similar to those derived from the crystal structure analysis of the coordinated ligand and are not significantly influenced by coordination and/or intermolecular interactions. | | |
Reference
| Z. Naturforsch. 50b, 209 (1995); eingegangen am 7. September 1994 | | |
Published
| 1995 | | |
Keywords
| Crystal Structure, Chromium Complex, Phosphinoformic Acid, Hydroxycarbonylphosphine | | |
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| default:Reihe_B/50/ZNB-1995-50b-0209.pdf | | | Identifier
| ZNB-1995-50b-0209 | | | Volume
| 50 | |
14 | Author
| U. Berger, V. Schultz-Coulon, W. Schnick | Requires cookie* | | Title
| Ca2Sr[WN4], das erste gemischte Erdalkalimetall-nitridowolframat C a2Sr[WN4], the First Mixed Alkaline-Earth Nitridotungstate  | | | Abstract
| The title com pound has been prepared by the reaction of Sr2N and Ca3N 2 or SrCN2 and Ca3N 2 with tungsten powder under nitrogen atmosphere at 1200 °C. The structure has been determined from single crystal X-ray data (Pbca (No. 61); Z = 8; a = 1017.7(2), b = 934.4(2), c = 1131.8(2) pm; wR = 5.56% (1150 observed reflections, 73 refined parameters)) and has been found to be isotypic to the low-temperature modification of Ba3[WN4], In contrast to the yellow or orange colour of other nitridometallates, Ca2Sr[WN4] is obtained as colourless crystals. | | |
Reference
| Z. Naturforsch. 50b, 213 (1995); eingegangen am 8. September 1994 | | |
Published
| 1995 | | |
Keywords
| Alkaline-Earth Nitridotungstate, Crystal Structure, Colour | | |
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| default:Reihe_B/50/ZNB-1995-50b-0213.pdf | | | Identifier
| ZNB-1995-50b-0213 | | | Volume
| 50 | |
16 | Author
| F.-D Martin, Hk Miiller-Buschbaum | Requires cookie* | | Title
| Ein Beitrag zur Kristallchemie der Alkali-Erdalkalimetall-Oxovanadate: Synthese und Struktur von K3CaV50 15 A Contribution to the Crystal Chemistry of A lkaline-Alkaline-Earth Oxovanadates: Synthesis and Structure of K3CaV50 15  | | | Abstract
| Single crystals of K3CaV50 15 have been prepared by crystallization from melts. The com pound shows a new structure type with orthorhombic symmetry, space group D ^-C m m a, a = 25.953(5), b = 15.688(3), c = 7.804(4) Ä , Z = 8. Typical features of K3CaV50 15 are isolated cyclic V40 12 and V60 18 groups o f corner sharing V 0 4 tetrahedra. | | |
Reference
| Z. Naturforsch. 50b, 243 (1995); eingegangen am 13. Septem ber 1994 | | |
Published
| 1995 | | |
Keywords
| Potassium, Calcium, Vanadium Oxide, Crystal Structure | | |
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| default:Reihe_B/50/ZNB-1995-50b-0243.pdf | | | Identifier
| ZNB-1995-50b-0243 | | | Volume
| 50 | |
17 | Author
| H. Szillat, Hk Müller-Buschbaum | Requires cookie* | | Title
| Synthesis and Crystal Structure of (Cu,Zn)3 7 5 Mo30 12  | | | Abstract
| Single crystals of (Cu,Zn)3 75Mo30 12 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. (Cu,Zn)3 75Mo3Oi2 crystallizes orthorhom-bically, space group D^-P212,21, Z = 4, a = 17.947(9), b = 5.092(3), c = 10.685(5) A. It is isotypic to Cu385Mo30 12. All molybdenum atoms are tetrahedrally coordinated by oxygen atoms. There are layers of C u 0 6 and Z n 0 6 octahedra, while other metal sites are occupied by copper in a deformed prismatic coordination with one oxygen atom at a remarkably greater distance from copper than the other five. Some of the zinc atoms occupy positions in chains of face-sharing octahedra with an occupancy factor of 0.75. The crystal structure is discussed with respect to the isotypic compound Cu385Mo30 12 and compounds of the type CuLnMo20 8. | | |
Reference
| Z. Naturforsch. 50b, 247—251 (1995); eingegangen am 13. September 1994 | | |
Published
| 1995 | | |
Keywords
| Crystal Structure, Copper, Molybdenum, Zinc, Oxide | | |
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| default:Reihe_B/50/ZNB-1995-50b-0247.pdf | | | Identifier
| ZNB-1995-50b-0247 | | | Volume
| 50 | |
18 | Author
| H. Szillat, Hk Müller-Buschbaum | Requires cookie* | | Title
| Uber das Oxomolybdat AgKCu3Mo4Oi6 mit Silber in siebenfacher Koordination About the Oxomolybdate AgKCu3Mo4O i6 with Silver in Seven-Fold Coordination  | | | Abstract
| Single crystals of AgKCu3Mo40 16 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. This compound crystallizes with monoclinic symmetry, space group C |h-P 2 Je, a = 5.056(1), b = 14.546(4), c = 19.858(9) Ä, ß = 86.64(5)°, Z = 4. The crystal structure of AgKCu3Mo40 16 is closely related to K2Cu3Mo40 16 showing ribbons of edge-sharing C u 0 6 and AgÖ7 polyhedra. The ribbons are linked by tetrahedrally coordinated molybdenum and K2O 10 groups. Another kind of M o 0 4 tetrahedra occupies the cavities inside the ribbons. The crystal structure and the coordination of silver, copper, potas sium and molybdenum by oxygen are discussed with respect to K2Cu3Mo40 16. | | |
Reference
| Z. Naturforsch. 50b, 252—256 (1995); eingegangen am 19. September 1994 | | |
Published
| 1995 | | |
Keywords
| Crystal Structure, Copper, Silver, Molybdenum, Potassium | | |
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| default:Reihe_B/50/ZNB-1995-50b-0252.pdf | | | Identifier
| ZNB-1995-50b-0252 | | | Volume
| 50 | |
19 | Author
| H. Szillat, Hk Müller-Buschbaum | Requires cookie* | | Title
| Zur Kristallchemie eines neuen Oxomolybdats: Cu2YbMo30 12 On the Crystal Chemistry of a New Molybdenum Oxide: Cu2YbM o30 12  | | | Abstract
| Single crystals of Cu2YbMo30 12 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. Cu2YbMo30 12 crystallizes with monoclinic symmetry (space group C 2h -P 12i/m l, a = 5.162(2), b = 10.885(4), c = 8.699(4) A. ß -95.73(7)°, Z = 2), forming a new structure type. Typical features are layers of C u 0 6 octahedra, connected via corners and edges. These layers are linked by molybdenum and ytterbium ions along [001]. The crystal structure as well as the coordination of copper, ytterbium and molybdenum and the oxidation states of copper and molybdenum are discussed with respect to the related but not isotypic compound (Cu,Zn)3 75Mo30 12. | | |
Reference
| Z. Naturforsch. 50b, 257—260 (1995); eingegangen am 19. September 1994 | | |
Published
| 1995 | | |
Keywords
| Crystal Structure, Copper, Molybdenum, Ytterbium, Oxide | | |
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| default:Reihe_B/50/ZNB-1995-50b-0257.pdf | | | Identifier
| ZNB-1995-50b-0257 | | | Volume
| 50 | |
20 | Author
| H. Szillat, Hk Müller-Buschbaum | Requires cookie* | | Title
| Synthese und Kristallstruktur eines Oxoantimonats mit Verwandtschaft zum Delafossit-Typ: Cu3MgSbl940 6 Synthesis and Crystal Structure of an Oxoantimonate with Relationship to the Delafossite Type: Cu3MgSbi 40 6  | | | Abstract
| Single crystals of Cu3MgSb140 6 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. Cu^MgSb] 40 6 crystallizes trigonally, space group C 3v — R3/c, a = 5.348(1), c = 34.482(8) A, Z = 6, with a Delafossite related new structure, characterized by layers containing S b 0 6 and M g06 octahedra. These layers are connected by O -C u -O dumb-bells. The crystal structure is discussed with respect to the Delafossite type. | | |
Reference
| Z. Naturforsch. 50b, 261—264 (1995); eingegangen am 26. September 1994 | | |
Published
| 1995 | | |
Keywords
| Crystal Structure, Copper, Magnesium, Antimony, Oxide | | |
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| default:Reihe_B/50/ZNB-1995-50b-0261.pdf | | | Identifier
| ZNB-1995-50b-0261 | | | Volume
| 50 | |
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