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1Author    Iring Leichtweis, Reinhard Hasselbring, HerbertW. Roesky, M. Athias Noltemeyer, Axel Herzog, Herrn Prof, -Georg Hans, WagnerRequires cookie*
 Title    Synthesen und Strukturen sechsgliedriger Cyclometallaphosphazene von Tellur(IV) und Rhenium(VII) Syntheses and Structures of Six-Membered Cyclometallaphosphazenes Containing Tellurium(IV) and Rhenium(VII)  
 Abstract    The reactions o f the tridentate ligands (M e3S i),N C (4 -R Q H A)N P P h ,N S iM e, [(1): R = H, (2): R = C F 3] with Re2Ov yield the six-membered rings (4-R C 6H 4C N PPh2N R e 0 2IsI)2 [(3): R = H, (4): R = C F 3], The acyclic com pound M e3SiN C (4-C F3C6H 4)N P Ph2N R eÖ 2O SiM e3 (5) has been obtained by reaction o f 2 with Me^SiOReOy 2 reacts quantitatively with TeCl4 to form the metallacycle 4-C F3C6H4tN P P h 2N TeC lN • pyridine (6) • pyridine. The molecular structures o f 4 • CH 2C12 and 6 • pyridine • 0.5 toluene have been determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 48b, 1234 (1993); eingegangen am 22. April 1993 
  Published    1993 
  Keywords    Inorganic Ring Systems, Tellurium, Rhenium 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1234.pdf 
 Identifier    ZNB-1993-48b-1234 
 Volume    48 
2Author    Willy GomblerRequires cookie*
 Title    NMR-spektroskopische Untersuchungen an Chalkogenverbindungen, II [1] 12o Te-, 77 Se-, 19 F-und 13 C-chemische Verschiebungen von CF3-substituierten Selen-und Tellurverbindungen [2] NMR Spectroscopic Studies on Chalcogen Compounds, II [1] 125 Te, 77 Se, »F and * 3 C Chemical Shifts of CF3 Substituted Selenium and Tellurium Compounds [2]  
 Abstract    77 Se chemical shifts of compounds CF3SeX exhibit an extraordinary good linear correla-tion with Huggins' electronegativities of X, %x-A range of 1051 ppm is covered for yx values between 1.9 and 3.15. Effective electronegativities are derived from the <5(77 Se) values. For some compounds unexpected 77 Se chemical shifts are found. This indicates an uncommon electronic constitution at selenium. Electron excitation energies are reported for some of the compounds and their importance for the paramagnetic shielding term is discussed. The relative shieldings of the tellurium compounds are analogous to those of the corresponding selenium compounds. In contrast to 77 Se, the 19 F shieldings of CF3EX compounds (E = chalcogen) depend inversely on the electronegativity of E and X. The 13 C chemical shifts do not correlate with the xx values. NMR data of some CF3Se(IV) and CF3Te(IV) compounds are also reported for comparison. 
  Reference    Z. Naturforsch. 36b, 535—543 (1981); eingegangen am 21. Januar 1981 
  Published    1981 
  Keywords    NMR Spectra, Trifluoromethyl Group, Selenium, Tellurium 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0535.pdf 
 Identifier    ZNB-1981-36b-0535 
 Volume    36 
3Author    Lothar Weber, Georg Meine, Roland Boese, Norbert NiederprümRequires cookie*
 Title    Übergangsmetall-substituierte Diphosphene, XIV [1]  
 Abstract    Zur Reaktivität des Diphosphenylkomplexes (i/ 5 -C 5 Me5)(CO) 2 Fe—P=P—Ar (Ar = 2,4,6-r-Bu 3 C 6 H 2) gegenüber Schwefel, Selen und Tellur. Synthese und Struktur des ersten Thioxo-A s -diphosphenyl-Komplexes (!7 5 -C 5 Me 5)(CO) 2 Fe-P(=S)(=P-Ar) Transition Metal Substituted Diphosphenes, XIV [1] On the Reactivity of the Diphosphenyl Complex (?; ; '-C5Me5)(CO) 2 Fe-P=P-Ar (Ar = 2,4,6-J-Bu 3 C 6 H 2) towards Sulfur, Selenium, and Tellurium. Synthesis and X-Ray Structure Analysis of the First Thioxo-A 5 -diphosphenyl Complex (>/ 5 -C 5 Me 5) (CO) 2 Fe -P(=S)(=P -Ar) The diphosphenyl complex (?7 5 -C 5 Me 5)(CO) 2 Fe-P=P-Ar (la) (Ar = 2,4,6-rm-Bu 3 C 6 H 2) reacts with an equimolar amount of sulfur to yield the first thioxo-A 5 -diphosphenyl com-plex (/7 5 -C 5 Me 5)(CO) 2 Fe-P(= S) = P-Ar (2). Heating of 2 in boiling benzene affords the metal functionalized thiadiphosphirane 3. Similarily the selenoxo-A 5 -diphosphenyl complex (^ 5 -C 5 Me 5)(CO) 2 Fe —P(=Se) = P—Ar (5) and selena-diphosphirane 6 are synthesized. The prod-ucts have been characterized by elemental analysis as well as by spectroscopic data (IR, 'H, 13 C, 31 P NMR, MS). The molecular structure of 2 has been elucidated by single crystal X-ray analysis. 
  Reference    Z. Naturforsch. 43b, 715—721 (1988); eingegangen am 26. Oktober 1987 
  Published    1988 
  Keywords    Diphosphenyl Complex, Sulfur, Selenium, Tellurium, X-Ray Analysis 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0715.pdf 
 Identifier    ZNB-1988-43b-0715 
 Volume    43 
4Author    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 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1117_n.pdf 
 Identifier    ZNB-1991-46b-1117_n 
 Volume    46 
5Author    Anja Edelmann, Sally Brooker, N. Orbert Bertel, M. Athias Noltemeyer, H. Erbert, W. Roesky, GeorgeM. Sheldrick, FrankT. EdelmannRequires cookie*
 Title    Strukturuntersuchungen an Diaryldichalkogeniden: Die Molekülstrukturen von |2  
 Abstract    ,4,6-(CF3)3C6H 2S]2,12,4,6-M e3C6H 2TeI2 und |2-M e2N-4,6-(CF3)2C6H 2Te]2 Structural Investigations of Diaryl Dichalcogenides: The Molecular Structures o f [2,4,6-(CF3)3C6HiS],, [2,4,6-Me3C6H ?Te]2 and [2-Me2N-4,6-(CF3)2C6H 2Te]2 The molecular structures o f [2,4,6-(CF3)3C6H 2S]2 (1), [2,4,6-M e3C6H 2Te]2 (2) and [2-Me2N -4,6-(C F 3)2C6H2Te]2 (3) have been determined by X-ray diffraction. Crystal data: 1: orthorhombic, space group P 2,2,2,, Z = 4, a = 822.3(2), b = 1029.2(2), c = 2526.6(5) pm (2343 observed independent reflexions, R = 0.042); 2: orthorhom bic, space group Iba2, Z = 8, a = 1546.5(2), b = 1578.4(2), c = 1483.9(1) pm (2051 observed independent reflexions, R = 0.030); 3: m onoclinic, space group P 2,/c, Z = 4, a = 1118.7(1), b = 1536.5(2), c = 1492.6(2) pm, ß = 98.97(1)° (3033 observed independent reflexions, R = 0.025). 
  Reference    Z. Naturforsch. 47b, 305 (1992); eingegangen am 12. Ju li/9. September 1991 
  Published    1992 
  Keywords    Sulfur, Tellurium, Disulfides, Ditellurides, X -R ay 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0305.pdf 
 Identifier    ZNB-1992-47b-0305 
 Volume    47 
6Author    Kuhn3, Thomas Kratz3, G. Erald, H. EnkelbRequires cookie*
 Title    N orbert  
 Abstract    The carbene adduct 5 is formed from the 2-tel-luroimidazoline 4 and iodine. The X-ray structure analysis reveals a dimeric structure in the solid state. 
  Reference    Z. Naturforsch. 51b, 295 (1996); eingegangen am 21. Juli 1995 
  Published    1996 
  Keywords    Tellurium, Carbene, Iodine Reaction, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0295_n.pdf 
 Identifier    ZNB-1996-51b-0295_n 
 Volume    51 
7Author    Hk Sedello, Müller-BuschbaumRequires cookie*
 Title     
 Abstract    Single crystals of BaCuTe03T e 0 4 have been prepared by crystallisation from melts. X-ray investigations lead to orthorhombic symmetry, space group C2v-Ama2, a = 5.4869(8), b = 15.412(1), c = 7.2066(4) A , Z = 4. This compound represents a new structure type, containing B aO 10, C u 0 5, T e 0 6 and T e 0 4 polyhedra. The lone pair (E) of TeIV completes the TeIV0 4 polyhedron to a trigonal T e 0 4E bipyramid. The Te to E distance is estimated by calculations o f the Coulomb terms of lattice energy to 1.43 A . 
  Reference    Z. Naturforsch. 51b, 465—468 (1996); eingegangen am 31. August 1995 
  Published    1996 
  Keywords    Barium, Copper, Tellurium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0465.pdf 
 Identifier    ZNB-1996-51b-0465 
 Volume    51 
8Author    Ot, (.M = Niobium, Tantalum) B Wedel, Hk Miiller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie der Barium-Oxometallat-Tellurite: Ba2M6Te202i (M = Niob und Tantal) On the Crystal Chemistry of the Barium Oxometallate-Tellurites Ba-,M6Te  
 Abstract    Single crystals of Ba2Nb6Te20 2| (I) and Ba2Ta6Te20 2| (II) have been prepared by solid state reactions in air. X-ray investigations led to monoclinic symmetry, space group C 3h -C2/m, (I): a = 16.699(3), b = 5.671(2), c = 9.611(2) A, ß = 96.92(2), (II): a = 16.655(8), b = 5.667(2), c = 9.576(4) Ä, ß = 96.64(7), Z = 2. N b5+ or Tas+ show octahedral and Te4+ a one sided triangular coordination by O 2 -. The position and distance of the lone pair on Te4+ have been estimated by calculations of the Coulomb terms of the lattice energy. The polyhedron around Ba2+ may be described by a triply capped BaO^cube. The crystal structures are dominated by a ^ [Nb60 2l] l2~ network with incorporated Ba~+ and Te4+ ions. 
  Reference    Z. Naturforsch. 51b, 1411—1414 (1996); eingegangen am 28. März 1996 
  Published    1996 
  Keywords    Barium, Niobium, Tantalum, Tellurium, Crystal Structure 
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 Identifier    ZNB-1996-51b-1411 
 Volume    51 
9Author    Z. NaturforschRequires cookie*
 Title    Über ein Blei-Kupfer-Tellurat PbC^TeOy mit Cu2+ in deformiert tetragonal pyramidaler und tetraedrischer Sauerstoffkoordination  
 Abstract    On a Lead C opper Tellurate P b C u 3T e 0 7 Containing C u2+ in D istorted Square Pyram idal and Tetrahedral O xygen C oordination B. W edel, Hk. M üller-B uschbaum * PbCu3T e07 has been prepared from the element oxides by solid state reaction in air. Single crystal X-ray work led too orthorhombic symmetry, space group D^-Pnma, a = 10.488(1), b = 6.353(2), c = 8.813(2) A, Z = 4. Cu(1)0 5 square pyramids and Te06 octahedra are members of the anionic part of the crystal structure, Cu(2) atoms show tetrahedral coordination by oxygen. The C u (2)2+ and the Pb2+ cations are incorporated into a [Cu(l)2Te07] network. PbCu,Te07 can thus be viewed as a lead copper oxocuprate(II) tellurate. Calculations of the Coulomb terms of lattice energy reveal two possible positions for the lone pair of electrons at Pb'+. 
  Reference    Z. Naturforsch. 51b, 1587—1590 (1996); eingegangen am 21. Mai 1996 
  Published    1996 
  Keywords    Lead, Copper, Tellurium, Oxide, Crystal Structure 
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 Identifier    ZNB-1996-51b-1587 
 Volume    51 
10Author    M. Wachhold, W. S. SheldrickRequires cookie*
 Title    Methanolothermale Synthese von Rb3AsSe4 * 2 Se6 und Cs3AsSe4 * 2 Cs2As2Se4 * 6 Te4Se2, zwei Selenidoarsenate mit sechsgliedrigen Chalkogenringen Methanolothermal Synthesis o f Rb3A sSe4 * 2 Se6 and Cs3AsSe4 * 2 Cs2A s2Se4 * 6 Te4Se2. Two Selenidoarsenates with Six-Membered Chalcogen Rings  
 Abstract    The methanolothermal reaction of Rb2C 0 3 with As2Se3 and black selenium leads to the formation of Rb3AsSe4 and the new selenidoarsenate(V) Rb3AsSe4 • 2 Se6 (1), which crys­ 
  Reference    Z. Naturforsch. 52b, 169—175 (1997); eingegangen am 29. Juli 1996 
  Published    1997 
  Keywords    Selenium, Tellurium, Ring Systems, Selenidoarsenate, Methanolothermal Synthesis 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0169.pdf 
 Identifier    ZNB-1997-52b-0169 
 Volume    52 
11Author    B. Wedelb, K. Sugiyama3, K. Hiraga3, K. ItagakibRequires cookie*
 Title    Zur Kristallchemie des ersten Blei-Zink-Silicium-Telluroxids: PbZn4SiTeOio On the Crystal Chemistry o f the First Lead Zinc Silicon Tellurium Oxyde PbZn4SiTeO 10  
 Abstract    Single crystals of the new lead zinc silicon tellurium oxide PbZn4SiTeO10 have been prepared by solid state reaction in air. The compound is colourless and crystallizes in orthorhombic symmetryj space group Dih Pnma, with the cell parameters: a = 6.542 (5), b = 15.624(4), c = 8.280(4) A, Z = 4. The structure has been determined from a single crystal X-ray study and refined to the conventional values R = 0.032 and wR(F2) = 0.050. Zn~+ and Si4+ show tetrahedral and Te6+ octahedral coordination by 0 2~.The crystal structure is dominated by a ^ [Zn4O l0]12-framework with isolated Te066+ and Si044+ polyhedra. Pb2+ ions are incorporated in the network. The centres of negative charge of the lone of the Coulomb term of the lattice energy. 
  Reference    Z. Naturforsch. 54b, 469—472 (1999); eingegangen am 3. Dezember 1998 
  Published    1999 
  Keywords    Lead, Zinc, Silicon, Tellurium, Crystal Structure 
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 Identifier    ZNB-1999-54b-0469 
 Volume    54 
12Author    *. Sonderdruckanforderungen, ProfK. Dr, DehnickeRequires cookie*
 Title    D ie Kristallstruktur von Bis(bromo  
 Abstract    -triphenyl)arsen(V)-hexabromo-tellurat(IV), [Ph3A sB r]2[TeBr6] Crystal Structure o f B is(brom otriphenyl)-arsen ic(V)-h exab rom otellu rate(IV), [Ph3A sB r]2[TeBr6] S oheila Chitsaz, Bernhard N eum üller, Kurt D eh nick e* Yellow-orange single crystals of [Ph3AsBr]2[TeBr6] have been prepared from satu­ rated solutions of Ph3AsBr2 and TeBr4 in aceto­ nitrile and characterized by a crystal structure de­ term ination. Space group R3c, Z = 12, lattice di­ mensions at -7 0 °C: a = b = 1337.9(2), c = 7953.8(4) pm, R = 0.0691. The structure consists of discrete ions [Ph3A sBr]+ and nearly perfectly octahedral [TeBr6]2-. 
  Reference    Z. Naturforsch. 54b, 1092—1094 (1999); eingegangen am 28. Mai 1999 
  Published    1999 
  Keywords    Arsenic, Tellurium, Bromo Complex, Crystal Structure 
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 Identifier    ZNB-1999-54b-1092_n 
 Volume    54