Go toArchive
Browse byFacets
Bookbag ( 0 )
'Zirconium' in keywords Facet   section ZfN Section B  [X]
Results  12 Items
Sorted by   
Publication Year
2001 (1)
2000 (1)
1999 (3)
1996 (1)
1995 (1)
1991 (2)
1988 (2)
1981 (1)
1Author    Herbert Plenio, HerbertW. RoeskyRequires cookie*
 Title    Synthese achtgliedriger Metallacyclen mit einem M(NSN) 2 M-Gerüst (M = Zr, Hf) Syntheses of Eight-Membered Metallacyeles with a M(NSN) 2 M-Frame (M = Zr, Hf)  
 Abstract    The reactions of Cp.ZrCU, CpCp*ZrCh and CpCp*HfCU (Cp* = C s Me s , Cp = C S H S) with Me 3 SnNSNSnMe 3 yield the compounds Cp 2 Zr(NSN) 2 ZrCp 2 (1), CpCp*Zr(NSN) 2 ZrCpCp* (2) and CpCp*Hf(NSN) 2 HfCpCp* (3) as thermally and air-stable yellow solids. 2 and 3 exist as two different isomers with identical cyclopentadienyl-groups located on the same or on the opposite side of the metallacycle. 
  Reference    Z. Naturforsch. 43b, 1575—1578 (1988); eingegangen am 20. Juli 1988 
  Published    1988 
  Keywords    Metallacycle, Zirconium, Hafnium 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1575.pdf 
 Identifier    ZNB-1988-43b-1575 
 Volume    43 
2Author    C. Rumpf, W. BenschRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-0695.pdf 
 Identifier    ZNB-2000-55b-0695 
 Volume    55 
3Author    A. Drašner, Ž. BlažinaRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1547.pdf 
 Identifier    ZNB-1981-36b-1547 
 Volume    36 
4Author    Amal Haoudi-M, Ahmed Azzah, Hans-Georg Mazzah, M. Schmidt, H. Athias Noltemeyer, W. Erbert, RoeskyRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0587.pdf 
 Identifier    ZNB-1991-46b-0587 
 Volume    46 
5Author    NorbertA. Harringer, Andreas Kolb, KurtO. KleppRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-1322.pdf 
 Identifier    ZNB-2001-56b-1322 
 Volume    56 
6Author    H. Erbert, W. Roesky, Birgit Meller-Rehbein, M. Athias NoltemeyerRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1117_n.pdf 
 Identifier    ZNB-1991-46b-1117_n 
 Volume    46 
7Author    S. Trojanov, A. Stiewe, E. KemnitzRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0019.pdf 
 Identifier    ZNB-1996-51b-0019 
 Volume    51 
8Author    EvgeniV. Avtomonov, KonstantinA. RufanovRequires cookie*
 Title    Zirconium Reagents for Organometallic Synthesis. Crystal Structures of ZrCl4*2Et20 and (Et2N)ZrCl3*Et20  
 Abstract    Reaction of 3 equivalents of ZrCU-2Et20 (1) with 1 equivalent of (Et^N ^Zr in diethyl ether readily affords crystalline (Et2N)ZrCl3-2Et20 (2) in almost quantitative yield. The product was characterised by elemental analysis and by 1H. 1 C NMR, and MS techniques. The reactivity of this reagent towards C-H acidic compounds has been studied using cyclopentadiene as a C-H acid. The crystal structures of both 1 and 2 have been determined by X-ray diffractometry. The coordination polyhedra reveal a nearly perfect octahedral geometry with a trans Et20 ligation for 1 and a cis one for 2. 
  Reference    Z. Naturforsch. 54b, 1563—1567 (1999); received July 7 1999 
  Published    1999 
  Keywords    Zirconium, Adducts, Amides, Organometallic Reagents, X-Ray Data 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1563.pdf 
 Identifier    ZNB-1999-54b-1563 
 Volume    54 
9Author    ;.M = Ti, ZrDieter Fenske, Eva Hartmann, Kurt DehnickeRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1611.pdf 
 Identifier    ZNB-1988-43b-1611 
 Volume    43 
10Author    Anne Utzolino, Karsten BluhmRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1653.pdf 
 Identifier    ZNB-1995-50b-1653 
 Volume    50 
11Author    KurtO. Klepp, Andreas KolbRequires 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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0441.pdf 
 Identifier    ZNB-1999-54b-0441 
 Volume    54 
12Author    Gissur Örlygsson, Bernd HarbrechtRequires cookie*
 Title    The Crystal Structure of WC Type ZrTe. Advantages in Chemical Bonding as Contrasted to NiAs Type ZrTe  
  Reference    Z. Naturforsch. 54b, 1125—1128 (1999); received May 20 1999 
  Published    1999 
  Keywords    Zirconium, Telluride, Crystal Structure, Electronic Structure, WC Type Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1125.pdf 
 Identifier    ZNB-1999-54b-1125 
 Volume    54