| | 21 | Author
| Ticdsb Nacdas, Burkhard Krenkel, Christoph Tiburtius, Hans-Uwe Schuster | Requires cookie* | | | Title
| NaCdAs und TICdSb, ternäre Verbindungen mit modifizierter em£i-PbCl2-Struktur Ternary Compounds in a Modified awta'-PbCl2-Structure  | | | | Abstract
| The compounds NaCdAs and TICdSb were prepared from the elements, they crystallize in a modified anfi-PbC^-type lattice, space group Pnma-D|{j. The lattice constants are NaCdAs: a = 757.6(4) pm; b = 447.1(4) pm; c = 804.4(4) pm; TICdSb: a = 817.7(5) pm; b = 488.5(5) pm; c = 851.4(5) pm. | | | |
Reference
| Z. Naturforsch. 34b, 1686—1689 (1979); eingegangen am 18. Juli 1979 | | | |
Published
| 1979 | | | |
Keywords
| Intermetallic Compounds, Crystal Structure, Sodium, Thallium | | | |
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| default:Reihe_B/34/ZNB-1979-34b-1686.pdf | | | | Identifier
| ZNB-1979-34b-1686 | | | | Volume
| 34 | |
| 23 | Author
| Volker Küllmer, Erika Röttinger, Heinrich Vahrenkamp | Requires cookie* | | | Title
| Phosphinsubstituierte Carbonyl-Seleno-Komplexe des Mangans und Rheniums Phosphine Substituted Carbonyl Seleno Complexes of Manganese and Rhenium | | | | Abstract
| The selenium bridged complexes [(CO)4M-SeX]2 (M = Mn, Re; X = H, SnMe3) were converted by trimethylphosphine to the dimers [Me3P(CO)3M-SeX]2 and/or the monomers (Me3P)2(CO)3M-SeX. The obtained Se-SnMe3 compounds reacted with HCl to form the SeH compounds. The structures of the new complexes were deduced from their IR and NMR spectra. [(Me3P)2(CO)3Re]2Se, the first monobridged bis-earbonylmetal chalcogenide, was obtained as a byproduct and confirmed by a crystal structure analysis. Die metallorganischen Lewis-Basen des Typs | | | |
Reference
| Z. Naturforsch. 34b, 217—223 (1979); eingegangen am 29. September 1978 | | | |
Published
| 1979 | | | |
Keywords
| Dimeric Complexes, Monomerie Complexes, Crystal Structure, Carbonyl Seleno Complexes | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0217.pdf | | | | Identifier
| ZNB-1979-34b-0217 | | | | Volume
| 34 | |
| 24 | Author
| A. Müller, S. Pohl, M. Dartmann, J. P. Cohen, J. M. Bennett, R. M. Kirchner | Requires cookie* | | | Title
| Crystal Structure of (NH4)2[Mo3S(S2)6] Containing the Novel Isolated Cluster [MO3S13] 2 | | | | Abstract
| The novel tri-nuclear metal-sulfur cluster [Mo3S(S2)6] 2 ~ can be obtained as its am-monium salt by the reaction of a Mo iv containing aqueous solutions with polysulfide. Its crystal and molecular structure has been determined by a single crystal X-ray study. The crystals are monoclinic (space group Cm, with a = 11.577(6) A, b = 16.448(7) Ä, c = 5.716(2) Ä, ß = 117.30(3)°, V = 967.2 A 3 , Z = 2, dexpti. = 2.54(2) g/cm 3 , dcai = 2.54 g/cm 3). The structure consists of isolated [Mo3S(S2)6] 2_ units, with three Mo atoms at the vertices of a triangle. There are bridging as well as terminal S2 2 ~-ligands lying above and below the Mo3-plane (bond distances: Mo-Mo = 2.722 A, Mo-S(terminal) = 2.435, Mo-S(bridging) = 2.452, Mo3-S = 2.353(4) A and S-S = 2.04 A (mean values)). Transition metal sulfur clusters are model com-pounds of bioinorganic interest [1, 2]. Isolated binary sulfur clusters were unknown until recently, though several halogen cluster compounds were reported. We were able to isolate the novel com-pound (NH4)2[Mo3S(S2)6] containing bridging as well as terminal S2 2_ -ligands in the molybdenum-sulfur-cluster anion [2]. In this paper the crystal structure of the compound is reported. Experimental | | | |
Reference
| Z. Naturforsch. 34b, 434—436 (1979); received August 28/November 10 1978 | | | |
Published
| 1979 | | | |
Keywords
| Crystal Structure, Molybdenum, Sulfur, Cluster, Metal-Metal Bond, Disulfide Diatomic Ligands | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0434.pdf | | | | Identifier
| ZNB-1979-34b-0434 | | | | Volume
| 34 | |
| 25 | Author
| Günter Heurung, Reginald Gruehn, Herbert Brunner | Requires cookie* | | | Title
| Beiträge zur Untersuchung anorganischer nichtstöchiometrischer Verbindungen, Villa Elektronenmikroskopischer Nachweis neuer, eng begrenzter Defekte bei Blockstrukturen und Berechnung ihrer O/Me-Werte Contributions to the Study of Inorganic Non-Stoichiometric Compounds, VIII a Electronmicroscopical Proof of New, Small Area Defects of Block Structures and Calculation of Their O/Me Values | | | | Abstract
| Compounds of the systems Fe203-Nb205 (O/Me < 2.5) and Nb205-W03 (O/Me > 2.5) were prepared by chemical transport. The block structures of the obtained phases were investigated by high resolution transmission electron microscopy. The unusual defects observed were nearly identical in both systems. A recently devel-oped method to calculate the O/Me value of block structures [ 1 ] was extended and used for these defects. | | | |
Reference
| Z. Naturforsch. 34b, 553—562 (1979); eingegangen am 27. November 1978 | | | |
Published
| 1979 | | | |
Keywords
| Block Structures, Crystal Structures, Defect Structures, High Resolution Electron Microscopy | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0553.pdf | | | | Identifier
| ZNB-1979-34b-0553 | | | | Volume
| 34 | |
| 26 | Author
| Werner Liese, Kurt Dehnicke, Ingeborg Walker, Joachim Strähle | Requires cookie* | | | Title
| Darstellung, Eigenschaften und Kristallstruktur von Rhenium(VII)-Nitridchlorid, ReNCl4 Preparation, Properties and Crystal Structure of Rhenium(VII) Nitride Chloride, ReNCU | | | | Abstract
| Rhenium(VII) nitride chloride, ReNCU, is prepared by the reaction of ReClö with nitrogen trichloride. It forms metallic glazing, hygroscopic needles with an effective magnetic moment of 0.23 B.M. In the mass spectrum only the molecular ion ReNCU® is present, followed by ReNCl3®. The crystal structure was determined by X-ray diffraction methods (space group II, 265 independent reflexions, R = 0.071). The structure consists of ReNCL units, which are linked by strongly alternated Re = N-Re chains with different bond lengths of r Re = N = 158 pm and r Re-N = 248 pm. The structure is very similar to that of WOCl4. | | | |
Reference
| Z. Naturforsch. 34b, 693—696 (1979); eingegangen am 27. Februar 1979 | | | |
Published
| 1979 | | | |
Keywords
| Rhenium(VII) Nitride Chloride, Preparation, IR, Magnetic Moment, Crystal Structure | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0693.pdf | | | | Identifier
| ZNB-1979-34b-0693 | | | | Volume
| 34 | |
| 27 | Author
| Bernt Krebs, Volker Paulat | Requires cookie* | | | Title
| Darstellung und Eigenschaften trimerer Chlorotellurate(IV). Kristallstruktur von (CßHg^CTegCl^ | | | | Abstract
| The trimeric chlorotellurate(IV) ion Te3Cli3~ is obtained in benzene solution as a degradation product of cubane-like tetrameric tellurium(IV) chloride Te4Cli6 and can be isolated by crystallization in the form of salts with large cations. The crystal structure of the triphenyl-methyl salt (CeHs^CTesClis (P2x/c, a = 1109.5, b = 1644.4, c = 2043.9 pm, ß = 114.50°) shows the Te3Cli3 _ ion to have approximate C3V symmetry; as a fragment of the Te4Cli6 cube it consists of three edge-sharing octahedra with a central triply bridging Cl. Bond distances Te-Cl (tripl.br.) 292.4-298.4, Te-Cl (doubl.br.) 270.6-286.3, Te-Cl (term.) 232.0-238.8 pm. The vibrational spectrum of Te3Cli3~ is discussed. | | | |
Reference
| Z. Naturforsch. 34b, 900—905 (1979); eingegangen am 2. April 1979 | | | |
Published
| 1979 | | | |
Keywords
| Chlorotellurates(IV), Chalcogen Halogen Compounds, Inert Electron Pair, Crystal Structure | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0900.pdf | | | | Identifier
| ZNB-1979-34b-0900 | | | | Volume
| 34 | |
| 28 | Author
| Joachim Strähle, Jürgen Gelinek, Marianne Kölmel, Anna-Maria Nemecek | Requires cookie* | | | Title
| Die Kristallstruktur der Salze K2Au2I6 und Cs2Ag_rAu I 1_aAu 1,I Br6. Ein Beitrag zur Kristallchemie der Alkalihexahalogenoaurate(I,III) Crystal Structure of the Salts K2AU2IÖ and Cs2Aga;Au I I_a;Au III Br6. A Contribution to the Crystal Chemistry of the Alkali Hexahalogeno Aurates(I,III) | | | | Abstract
| K2Au2l6 crystallizes in the monoclinic space group P 2i/n. It is built up by linear anions AUI2 _ , square-planar anions AUU -, and K+ cations. The coordination of the gold(I) and gold(III) atoms is completed by additional iodine atoms at larger distances to form compressed and elongated octahedra, respectively. Like the other known alkali hexa-halogeno aurates(I,III), K2AU2IÖ belongs to a family of topologically related structures in which the perovskite is the aristotype. The actual structures depend on the size of the alkali metals: more dense structures with smaller coordination numbers for the smaller alkali metals result from a rotation of the coordination octahedra of the gold atoms. Cs2AgAuBr6 does not crystallize in the ideal cubic perovskite structure, as was de-scribed in 1942, but a disordered cubic phase (a = 550.1 pm, space group Pm3m), with the composition Cs2Aga.Auii_aAuniBr6 (x ^0.25), can be prepared from HBr solution. Its cubic symmetry is the result of a statistical superposition of the coordination polyhedra of Agi, Aui and Auni. | | | |
Reference
| Z. Naturforsch. 34b, 1047—1052 (1979); eingegangen am 3. Mai 1979 | | | |
Published
| 1979 | | | |
Keywords
| Crystal Structure, Alkali Metal Hexahalogeno Aurates(I, III), Crystal Chemistry | | | |
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| default:Reihe_B/34/ZNB-1979-34b-1047.pdf | | | | Identifier
| ZNB-1979-34b-1047 | | | | Volume
| 34 | |
| 29 | Author
| R. Tacke, M. Strecker, W. S. Sheldrick, E. Heeg, B. Berndt, K. M. Knapstein | Requires cookie* | | | Title
| Sila-Pharmaka, 14. Mitt. [1] Darstellung und Eigenschaften sowie Kristall-und Molekülstruktur von Sila-Difenidol Sila-Drugs, 14 th Communication [1] Preparation and Properties as well as Crystal and Molecular Structure of Sila-Difenidol | | | | Abstract
| Sila-difenidol (6 b), a sila-analogue of the drug difenidol (6 a), was synthesized according to Scheme 1. 6 b and its new precursors 3 and 5 were characterized by their physical and chemical properties, and their structures confirmed by elementary analyses, *H NMR and mass spectroscopy. 6 b crystallizes orthorhombic P 2i 2i 2i with a — 11.523(1), b = 14.366(4), c = 11.450(1) A, Z = 4, Dber = 1.14 gcm-3. The structure was refined to fi = 0.050 for 1897 reflexions. A strong nearly linear intramolecular 0-H---N hydrogen bond of 2.685 A is observed. The anticholinergic, histaminolytic and musculotropic spasmolytic activities of 6 a and 6 b are reported. | | | |
Reference
| Z. Naturforsch. 34b, 1279—1285 (1979); eingegangen am 16. März 1979 | | | |
Published
| 1979 | | | |
Keywords
| Sila-Difenidol, Syntheses, Crystal Structure, Molecular Structure, Biological Activity | | | |
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| default:Reihe_B/34/ZNB-1979-34b-1279.pdf | | | | Identifier
| ZNB-1979-34b-1279 | | | | Volume
| 34 | |
| 30 | Author
| Albrecht Mewis | Requires cookie* | | | Title
| Darstellung und Struktur der Verbindungen MgCuP, BaCuP(As) und BaAgP(As) Preparation and Crystal Structure of MgCuP, BaCuP(As), and BaAgP(As) | | | | Abstract
| The ABX-compounds MgCuP, BaCuP(As) and BaAgP(As) have been prepared and their structures determined. MgCuP crystallizes orthorhombically in an anti-PbCl2-structure (space group Pnma-D.Jg, a = 653.2(1) pm, b — 383.5(1) pm, c = 717.0(1) pm). The compounds BaCuP(As) and BaAgP(As) are isotypic and crystallize in a modified Ni2ln-structure (space group P 63/mmc-D^) with the lattice constants: | | | |
Reference
| Z. Naturforsch. 34b, 1373—1376 (1979); eingegangen am 28. Juni 1979 | | | |
Published
| 1979 | | | |
Keywords
| Phosphides, Arsenides, 2 A Elements, 1B Elements, Crystal Structure | | | |
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| default:Reihe_B/34/ZNB-1979-34b-1373.pdf | | | | Identifier
| ZNB-1979-34b-1373 | | | | Volume
| 34 | |
| 31 | Author
| Bernt Krebs, Michael Hein | Requires cookie* | | | Title
| (H502)2SeBr6 4H20 Solvated Halogeno-Chalcogen(IV) Acids, I Preparation and Structure of the Hexabromoselenium(IV) Acid Hydrate (Hs02)2SeBr6 * 4H20 | | | | Abstract
| Hexabromoselenium(IV) acid with the stoichiometric composition H2SeBr6 • 8 H20 is prepared from solutions of SeBr* in concentrated aqueous HBr. If separated from the solution, the crystalline compound is stable only at low temperatures. A single crystal X-ray structure analysis at —100 °C (monoclinic, C2/m, a — 1039.4(5), b = 1028.8(4), c = 836.6(3) pm, ß = 104.11(4)°) shows the acid to contain, besides regular octahedral SeBr6 2 -ions (Se-Br: 255.3(2)-257.9(2) pm), H502+ hydronium ions (0--0: 255(2) pm). The remaining H20 molecules are involved in a hydrogen bond system with O-O: 264(2)-275(2) pm andO-Br: 342(1), 351(1) pm. The formula has to be written as (H502)2SeBr6 • 4 H20. | | | |
Reference
| Z. Naturforsch. 34b, 1666—1670 (1979); eingegangen am 30. Juli 1979 | | | |
Published
| 1979 | | | |
Keywords
| Hexabromoselenium(IV) Acid, Chalcogen Halogen Compounds, Crystal Structure, Hydronium Compounds | | | |
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| default:Reihe_B/34/ZNB-1979-34b-1666.pdf | | | | Identifier
| ZNB-1979-34b-1666 | | | | Volume
| 34 | |
| 32 | Author
| Jochen Ellermann, Martin Lietz, Peter Merbach, Gerhard Thiele, Gerd Zoubek | Requires cookie* | | | Title
| Chemie polyfunktioneller Liganden, 53 [1] Über methyl-substituierte Triarsa-trioxa-, Triarsa-trithia- und Triarsa-triaza-adamantane und über den stark aufgeweiteten Adamantan-Käfig im Schwefel-Derivat Chemistry of Polyfunctional Ligands, 53 [1] About Methyl-substituted Triarsa-trioxa-, Triarsa-trithia-and Triarsa-triaza-adamantanes and about the Strongly Spread Adamantane Cage in the Sulfur Derivative | | | | Abstract
| The reaction of l,l,l-tris(diiodarsinomethyl)ethane, CH3C(CH2Asl2)3 (1), with H2O, H2S and CH3NH2 in THF gives the adamantane cage compounds CH3C(CH2ASO)3 (4), CH3C(CH2ASS)3 (5) and CH3C(CH2ASNCH3)3 (6) in high yields. The crystal structure of 5 has been determinated by X-ray diffraction. The unit cell (space group P2i/w) contains 4 isolated molecules in a cubic closest packing. The heteroadamantane 5 has an enlarged cage structure with extremely spread C-C(H2)-As bond angles of 124° at the methylene carbon atoms. Some pharmacological properties of the adamantane derivatives 4 and 5 have been studied. All compounds have been characterized by mass spectrometry and infrared, Raman and X H NMR spectroscopy. | | | |
Reference
| Z. Naturforsch. 34b, 975—982 (1979); eingegangen am 26. März 1979 | | | |
Published
| 1979 | | | |
Keywords
| Heteroadamantanes, Vibrational Spectra, Mass Spectra, X H NMR, Molecular and Crystal Structure | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0975.pdf | | | | Identifier
| ZNB-1979-34b-0975 | | | | Volume
| 34 | |
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