| 1 | Author
| Iring Leichtweis, Reinhard Hasselbring, HerbertW. Roesky, M. Athias Noltemeyer, Axel Herzog, Herrn Prof, -Georg Hans, Wagner | Requires 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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| default:Reihe_B/48/ZNB-1993-48b-1234.pdf | | | Identifier
| ZNB-1993-48b-1234 | | | Volume
| 48 | |
2 | Author
| Willy Gombler | Requires 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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| default:Reihe_B/36/ZNB-1981-36b-0535.pdf | | | Identifier
| ZNB-1981-36b-0535 | | | Volume
| 36 | |
3 | Author
| Lothar Weber, Georg Meine, Roland Boese, Norbert Niederprüm | Requires 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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| default:Reihe_B/43/ZNB-1988-43b-0715.pdf | | | Identifier
| ZNB-1988-43b-0715 | | | Volume
| 43 | |
4 | 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 | |
5 | Author
| Anja Edelmann, Sally Brooker, N. Orbert Bertel, M. Athias Noltemeyer, H. Erbert, W. Roesky, GeorgeM. Sheldrick, FrankT. Edelmann | Requires 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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| default:Reihe_B/47/ZNB-1992-47b-0305.pdf | | | Identifier
| ZNB-1992-47b-0305 | | | Volume
| 47 | |
7 | Author
| Hk Sedello, Müller-Buschbaum | Requires cookie* | | Title
| O  | | | 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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| default:Reihe_B/51/ZNB-1996-51b-0465.pdf | | | Identifier
| ZNB-1996-51b-0465 | | | Volume
| 51 | |
8 | Author
| Ot, (.M = Niobium, Tantalum) B Wedel, Hk Miiller-Buschbaum | Requires 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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| default:Reihe_B/51/ZNB-1996-51b-1411.pdf | | | Identifier
| ZNB-1996-51b-1411 | | | Volume
| 51 | |
9 | Author
| Z. Naturforsch | Requires 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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| default:Reihe_B/51/ZNB-1996-51b-1587.pdf | | | Identifier
| ZNB-1996-51b-1587 | | | Volume
| 51 | |
11 | Author
| B. Wedelb, K. Sugiyama3, K. Hiraga3, K. Itagakib | Requires 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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| default:Reihe_B/54/ZNB-1999-54b-0469.pdf | | | Identifier
| ZNB-1999-54b-0469 | | | Volume
| 54 | |
12 | Author
| *. Sonderdruckanforderungen, ProfK. Dr, Dehnicke | Requires 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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| default:Reihe_B/54/ZNB-1999-54b-1092_n.pdf | | | Identifier
| ZNB-1999-54b-1092_n | | | Volume
| 54 | |
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