| | 2 | Author
| C. Rumpf, W. Bensch | Requires cookie* | | | Title
| Synthesis and Crystal Structure of New Ternary Chalcogenides of Group IV Metals: K2ZrS4, Rb2ZrS4, and Rb2HfS4  | | | | Abstract
| The new ternary one-dimensional chain compounds K2ZrS4 , Rb2ZrS4 and Rb2HfS4 were prepared at 350 °C by reacting A2S3 and S with elemental M (A = K, Rb; M = Zr, Hf). They are isostructural, crystallizing in the orthorhombic space group Pbca with Z = 8 . The M atoms are in a distorted octahedral environment of four S2_ anions and one S22~ unit. The structure consists of infinite anionic chains comprised of edge-sharing M S6 octahedra running parallel to the [001] direction separated by the alkali metal cations. The composition of the chain may be formulated as j-,[MS4/ 2 (S2)2 -]. The two crystallographically independent alkali cations are in eight-and ninefold coordination of S atoms. | | | |
Reference
| Z. Naturforsch. 55b, 695—698 (2000); received Mai 2 2000 | | | |
Published
| 2000 | | | |
Keywords
| Polychalcogenides, Zirconium, Hafnium | | | |
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| default:Reihe_B/55/ZNB-2000-55b-0695.pdf | | | | Identifier
| ZNB-2000-55b-0695 | | | | Volume
| 55 | |
| 3 | Author
| A. Drašner, Ž. Blažina | Requires cookie* | | | Title
| Structural Studies in the Systems ZrZn 2 _ x Al x and HfZn 2 _ x Al x | | | | Abstract
| A great number of samples in the systems ZrZ^-arAls and HfZn2_xAl z was prepared and investigated by means of X-ray powder diffraction. In both systems hitherto unknown ternary Friauf-Laves structures of the MgCu2-type (S. G. Fd3m) were identified. Their homogeneity regions were determined to be ZrZno.eAl1.4-ZrZno.4Al1.6 and HfZn1.25Alo.75-HfZno.sAli.s, respectively. The unit cell parameter of ZrZno.sAli.s is a = 747.3 ± 0.3 pm, and for HfZno.sAli.s a = 741.4 ± 0.3 pm. For the alloys of these particular compositions the atomic positions were determined using trial and error methods. In the investigated systems, depending on the composition and/or thermal treatment, alloys having the AuCu3 structure (S. G. Pm3m) were also observed. Structural correlations of these ternary Friauf-Laves phases with their corresponding binary prototypes were made in terms of stacking sequences. | | | |
Reference
| Z. Naturforsch. 36b, 1547—1550 (1981); received August 21 1981 | | | |
Published
| 1981 | | | |
Keywords
| Aluminum, Hafnium, Zinc, Zirconium, Alloy | | | |
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| default:Reihe_B/36/ZNB-1981-36b-1547.pdf | | | | Identifier
| ZNB-1981-36b-1547 | | | | Volume
| 36 | |
| 4 | Author
| Amal Haoudi-M, Ahmed Azzah, Hans-Georg Mazzah, M. Schmidt, H. Athias Noltemeyer, W. Erbert, Roesky | Requires cookie* | | | Title
| Synthese und Struktur von achtgliedrigen Titan-und Zirkon-haltigen Siloxanringen Synthesis and Structure of Eight-Membered Titanium and Zirconium Containing Siloxane Rings | | | | Abstract
| Reaction o f (fBu)2Si(OH)2 with TiCl4, TiBr4, T il4, and ZrCl4 affords eight-membered rings | | | |
Reference
| Z. Naturforsch. 46b, 587—5 (1991); eingegangen am 23. Juli 1990 | | | |
Published
| 1991 | | | |
Keywords
| Titanium, Zirconium, Siloxane, Heterocycles | | | |
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| default:Reihe_B/46/ZNB-1991-46b-0587.pdf | | | | Identifier
| ZNB-1991-46b-0587 | | | | Volume
| 46 | |
| 5 | Author
| NorbertA. Harringer, Andreas Kolb, KurtO. Klepp | Requires cookie* | | | Title
| Na2ZrSe3, ein neues Chalcogenometallat(IV) mit Schichtstruktur Na2ZrSe3, a New Chalcogenometallate(IV) with a Layered Structure | | | | Abstract
| Orange red crystals of Na2ZrSe3 were obtained by the reaction of Na2Se, Zr and Se at 800 °C. The new compound is monoclinic, s. g. C2/m with a = 6.952(2), b = 12.01(1), c = 7.257(2) A, ß = 108.81(2)°, Z = 4. Its crystal structure was determined from single crystal diffractometer data (Mo-KQ-radiation) and refined to a conventional R of 0.016. It is characterized by layers based on a distorted ccp packing of Se-atoms where all metal atoms occupy octahedral voids in an ordered fashion. Zr atoms are located on the nodes of a 6 3-net forming CrCl3 type selenozirconate layer (d(Zr-Se) = 2.702 A). | | | |
Reference
| Z. Naturforsch. 56b, 1322—1324 (2001); eingegangen am 30. August 2001 | | | |
Published
| 2001 | | | |
Keywords
| Complex Chalcogenides, Selenides, Zirconium | | | |
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| default:Reihe_B/56/ZNB-2001-56b-1322.pdf | | | | Identifier
| ZNB-2001-56b-1322 | | | | Volume
| 56 | |
| 6 | Author
| H. Erbert, W. Roesky, Birgit Meller-Rehbein, M. Athias Noltemeyer | Requires cookie* | | | Title
| Reactions of M e2NC(S)SN(SiMe3)2 with M etal Halides -Crystal Structure of M e2NCS2ZrCl3 * 3 Pyridine | | | | Abstract
| M e-,NC(S)SN(SiM e3)2 (1) reacts with TeCl4 and N bC lj to yield M e2N C (S)SN TeC l2 (4) and | | | |
Reference
| Z. Naturforsch. 46b, 1117—1121 (1991); eingegangen am 14. Februar 1991 | | | |
Published
| 1991 | | | |
Keywords
| Tellurium, Niobium, Zirconium, Hafnium, Complexes, X-Ray | | | |
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| default:Reihe_B/46/ZNB-1991-46b-1117_n.pdf | | | | Identifier
| ZNB-1991-46b-1117_n | | | | Volume
| 46 | |
| 7 | Author
| S. Trojanov, A. Stiewe, E. Kemnitz | Requires cookie* | | | Title
| Synthese und Struktur saurer Ubergangsmetallsulfate - Ti(H50 2)(S 0 4)2(H20 ) 2 und Zr(H30 ) 2(S 0 4)3 Synthesis and Structure of Acid Transition Metal Sulfates - Ti(H50 2)(S 0 4)2(H20 )2 and Zr(H30 ) 2(S 0 4)3 | | | | Abstract
| From the ternary system Mn(S 0 4)n/2 / S 0 3 / H20 (Mn+ = Zr4+, Ti3+) two new acid metal sulfates, Ti(H50 2)(S 0 4)2(H20)2 and Zr(H30) 2(S 0 4)3, have been synthesized and structurally characterized. Ti(H50 2)(S 0 4)2(H->0)i crystallizes in the orthorhombic space group Pnma with cell parameters a = 9.858(5), b = 18.32(2), c = 5.437(7)Ä (Z = 4); Zr(H30) 2(S 0 4)3 crystallizes in the triclinic space group PI with cell parameters a = 5.092(2), b = 8.533(3), c = 12.388(6)A, a = 92.95(3)°, ß = 90.89(3)°, 7 = 94.35(3)° (Z= 2). In the titanium compound there are slightly distorted T i0 6 octahedra with T i-0 distances between 1.99 and 2.09 A which are sharing corners with S 0 4 tetrahedra. Through hydrogen bonds layers are formed perpendicular to the 6-axis. These layers are connected by H30 + ions only. The structure of Zr(H30) 2(S 0 4)3 consists of three different S 0 4 tetrahedra and distorted Zr07 polyhedra which are connected via common corners and edges to form columns parallel to the a-axis. The Z r-0 distances vary from 2.13o to 2.18A for equatorial positions, significantly longer than the axial Zr-O distances with 2.05A. | | | |
Reference
| (Z. Naturforsch. 51b, 19—24 [1996]; eingegangen am 13. Juni 1995) | | | |
Published
| 1996 | | | |
Keywords
| Synthesis, Crystal Structure, Titanium, Zirconium, Hydrogen Sulfates | | | |
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| default:Reihe_B/51/ZNB-1996-51b-0019.pdf | | | | Identifier
| ZNB-1996-51b-0019 | | | | Volume
| 51 | |
| 9 | Author
| ;.M = Ti, ZrDieter Fenske, Eva Hartmann, Kurt Dehnicke | Requires cookie* | | | Title
| N,N'-Bis(trimethylsilyl)benzamidinato-Koniplexe von Titan und Zirkon. Die Kristallstrukturen von [C 6 H 5 -C(NSiMe3) 2 MCl 3 ] 2 ; M = Ti, Zr N,N'-Bis(trimethylsilyl)benzamidinato Complexes of Titanium and Zirconium. The Crystal Structures of [C 6 H 5 -C(NSiMe 3 ) 2 MCl 3 ] | | | | Abstract
| The N,N'-bis(trimethylsilyl)benzamidinato complexes [C 6 H 5 -C(NSiMe 3) 2 MCl 3 ] 2 (M = Ti. Zr) have been prepared by the reactions of N,N,N'-tris(trimethylsilyl)benzamidine, [C 6 H 5 — C(NSiMe 3)N(SiMe 3) 2 ] with titanium tetrachloride, and zirconium tetrachloride, respec-tively. The compounds form moisture sensitive, dark red (Ti) and white (Zr) crystals, which were characterized by crystal structure determinations. [C 6 H 5 —C(NSiMe 3) 2 TiCl 3 ] 2 : space group P2,/rc. Z = 2, 4373 observed independent reflexions, R = 0.034. Lattice dimensions (-90 °C): a — 959.0(8); b = 1196.5(8); c = 1770.9(11) pm; ß = 93.79(4)°. [C 6 H 5 -C(NSiMe 3) 2 ZrCl 3 ] 2 : space group P2,/«. Z = 2, 3160 observed independent reflexions, R = 0.031. Lattice dimensions (-90 °C): a = 971.6(7); b = 1222.2(9); c = 1792.9(10) pm; ß = 93.51(5)°. Both complexes crystallize isotypically, forming centrosymmetric dimeric molecules via chloro bridges with bond lengths of 242.0 and 253.8 pm (Ti), and of 253.7 and 264.9 pm (Zr). The metal atoms complete their distorted octahedral surroundings with two chlorine ligands and the nitrogen atoms of the chelating amidinato ligand. The N atoms of the amidinato group are in equatorial and axial positions. This accounts for the different metal-nitrogen bond lengths of 207 pm (ax) and 199 pm (eq) in the titanium compound and 219 pm (ax) and 214 pm (eq) in the zirconium complex. | | | |
Reference
| Z. Naturforsch. 43b, 1611—1615 (1988); eingegangen am 22. Juni 1988 | | | |
Published
| 1988 | | | |
Keywords
| N, N'-Bis(trimethylsilyl)benzamidinato Complexes, Titanium, Zirconium, Syntheses, IR Spectra | | | |
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| default:Reihe_B/43/ZNB-1988-43b-1611.pdf | | | | Identifier
| ZNB-1988-43b-1611 | | | | Volume
| 43 | |
| 10 | Author
| Anne Utzolino, Karsten Bluhm | Requires cookie* | | | Title
| Cox 5Ti0 5(B 0 3) 0 and Co! 5Zro.5(B 0 3) 0 | | | | Abstract
| Single crystals of Co15Tio.5(B 0 3)0 (I) and Coj 5Zr0 5(BO3)O (I I) were obtained by a B20 3 flux technique. Both compounds crystallize with orthorhombic symmetry, space group D -Pnma (Nr. 62), I a = 928.1; b = 311.1; c = 940.1 pm; Z = 4 and I I a = 949.5; b = 323.42; c = 934.7 pm; Z = 4. The compounds are isotypic to the mineral warwickite. All metal ions are octahedrally coordinated by oxygen ions. The structure contains isolated, trigonal planar B 0 3 units and oxygen that is not coordinated to boron. Die Synthese und Kristallstruktur von cobalthaltigen Boratoxiden: Coi^Tio,5(B03)0 und C o i?5Zr<),5(B03)0 | | | |
Reference
| Z. Naturforsch. 50b, 1653—1657 (1995); eingegangen am 4. Mai 1995 | | | |
Published
| 1995 | | | |
Keywords
| Cobalt, Titanium, Zirconium, Borate Oxide, Crystal Structure, X-Ray | | | |
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| default:Reihe_B/50/ZNB-1995-50b-1653.pdf | | | | Identifier
| ZNB-1995-50b-1653 | | | | Volume
| 50 | |
| 11 | Author
| KurtO. Klepp, Andreas Kolb | Requires cookie* | | | Title
| Komplexe Chalkogenide der IVa Metalle mit niedrigdimensionalen anionischen Partialstrukturen. Darstellung und Kristallstruktur von K2ZrTe3 und Rb2ZrTe3 Complex Chalcogenides of the IVa Metals with Low Dimensional Anionic Partial Structures. Preparation and Crystal Structures of K2ZrTe3 and Rb2ZrTe3 | | | | Abstract
| The isostructural compounds K2ZrTe3 and Rb2ZrTe3 were obtained at 1000°C by reacting K7Te and Rb9Te with stoichiometric amounts of Zr and Te. The compounds are monoclinic, mP24, space group P2,/c, Z = 4 with a = 9.089(3), b = 14.148(4), c = 6.986(3)Ä, ß = 105.90(1)° and a = 9.735(4), b = 14.300(7), c = 6.952(8) Ä, ß = 108.61(2)°, respectively. The crystal structure was determined from diffractometer data and refined to R = 0.030 for 1452 Fo's for K2ZrTe3 and R = 0.038 for 1131 Fo's for Rb2ZrTe3. The crystal structure is of a new type, characterized by infinite anionic chains, ^-[ZrTe3]2_ built up by octahedra sharing opposite faces which run along [001]. The mean Zr-Te bond lengths are 2.921 and 2.920 A, respectively. The alkali cations separating the chains are characterized by two different -distorted octahedral and pentagonal bipyramidal -chalcogen environments. E inleitung | | | |
Reference
| Z. Naturforsch. 54b, 441 (1999); eingegangen am 9. November 1998 | | | |
Published
| 1999 | | | |
Keywords
| Crystal Structure, Complex Chalcogenides, Tellurides, Zirconium, Pseudo-one-dimensional solids | | | |
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| default:Reihe_B/54/ZNB-1999-54b-0441.pdf | | | | Identifier
| ZNB-1999-54b-0441 | | | | Volume
| 54 | |
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