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141Author    Karl Wieghardt, Ursula Bossek, Martina Guttmann, Johannes WeissRequires cookie*
 Title    Metallkomplexe der Liganden  
 Abstract    1.4.7-Triazacyclononan-N.N .N -tris-2-ethansulfonat (TES) und 1.4.7-Triazacyclononan-N.N' .N'' -trisethylacetat (TEA). Die Kristallstrukturen von Na[Ni(TES)(H20)] • 5 H20 und Na[Cu(TES)] • 3 H20 Transition Metal Complexes Containing the Ligands 1,4,7-Triazacyclononane-N,N',N"-tris-2-ethanesulfonate (TES) and l,4,7-Triazacyclononane-N,N , ,N"-tris-ethylacetate (TEA). The Crystal Structures of Na[Ni(TES) (H20)] • 5H20 and of Na[Cu(TES)] • 3H20 The syntheses of two new, potentially hexadentate ligands with an N3O3 donor set is reported: l,4,7-triazacyclononane-N,N , ,N"-tris-2-ethanesulfonate (TES) and 1,4,7-tria-zacyclononane-N,N',N"-tris-ethylacetate (TEA). Complexes of the divalent transition metals Co(II), Ni(II), Cu(II) containing these ligands have been prepared. The kinetics of the reactions of [Co n (TEA)H20] 2 + and [Co II (TCTA)]-(TCTA= 1,4,7-triazacyclononane-N^^N'^tris-acetate) with [Fe m (CN)6] 3 ~, respectively, have been measured. A stable binuclear [Co(TEA)(CN)6Fe]~ species has been characterized in solution whereas the reaction of [Co(TCTA)]-with [Fe(CN)6] 3 -yields [Co in TCTA] and [Fe(CN)6] 4 -via an outer-sphere electron transfer reaction (k = 5,9 x 10 3 1 mol -1 sec -1 ; 25 °C, I = 0,26 M). Na[Ni(TES)H20] • 5H20 crystallizes in the triclinic space group P I (C^-No 2) with cell constants a = 806,7(4), b = 1468,4(8), c = 2317,9(8) pm, a = 72,36(4)°, ß = 83,48 (3)°, y = 81,99(4)°, and Z = 4. The nickel(II) center is in a distorted octahedral environment of a pentadentate TES ligand (N3Ü2)_and a coordinated H20. Na[Cu(TES)] 3H20 crystal-lizes in the triclinic space group P I (C^-No 2) w T ith cell constants a = 747,3(3), b — 1082,6(5), c = 1459,3(9) pm, a = 81,13(5)°, ß = 84,75(4)°, y = 79,39(3)°, and Z = 2. The copper(II) center is in a distorted quadratic pyramidal environment of a pentadentate TES ligand. Each of the complex anions contains one uncomplexed CH2-CH2-SC>3 _ group. 
  Reference    (Z. Naturforsch. 38b, 81—89 [1983]; eingegangen am 27. September 1982) 
  Published    1983 
  Keywords    Crystal Structure, O-Coordinated R-S03-group, Metal Complexes 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0081.pdf 
 Identifier    ZNB-1983-38b-0081 
 Volume    38 
142Author    Hans-Jörg Deiseroth, Han Fu-SonRequires cookie*
 Title    Cs6Ga2Se6, ein ternäres Selenogallat(III) mit isolierten [Ga2Se6] 6 --Ionen Cs6Ga2Se6, a Ternary Selenogallate(III) with Isolated [Ga2Se6] 6_ Ions  
 Abstract    Cs6Ga2Se6 can be prepared from mixtures of Cs2Se and Ga2Se3. The transparent single crystals of the moisture sensitive compound (m.p. 685 °C) crystallize in the monoclinic system with a = 848.0(5), b = 1364.4(5), c = 1111.5(5) pm, ß = 126.22(5)° (T = —150 °C, Z — 2, space group P2i/c). The gallium atoms pairwisely occupy selected tetrahedral holes between layers formed by the cesium and selenium ions. This structural principle leads to the formation of double tetrahedral isolated [Ga2Se6] 6-ions. 
  Reference    Z. Naturforsch. 38b, 181—182 (1983); eingegangen am 15. Oktober 1982 
  Published    1983 
  Keywords    Cesium Selenogallate, Crystal Structure, Thermal Properties 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0181.pdf 
 Identifier    ZNB-1983-38b-0181 
 Volume    38 
143Author    Dieter Weber, Karl Peters, Hans Georg, Schnering, Ekkehard FluckRequires cookie*
 Title    Kristallstruktur yon Pyrrolidinium-bis(diisopropylphosphinoyl)phosphid, einem System mit zweifach koordiniertem Phosphor Crystal Structure of Pyrrolidinium-bis(diisopropylphosphinoyl)phosphide, a System with Bicoordinated Phosphorus  
 Abstract    Pyrrolidinium-bis(diisopropylphosphinoyl)phosphide crystallizes triclinically in the space group Pi with a = 1019.6(8), b = 1271.5(4), c = 999.5(7) pm, a = 100.90(5)°, ß = 91.24(5)°, y = 99.10(5)° and Z = 2 formula units. The mean P-P bond length is 212.2 pm and hence shorter than in derivates in which the electron pairs of the bicoordi-nated phosphorus atom are bonded to one or two M(CO)5-groups. Additional p.-z-d* bonding explains the shortening of the P-P bond. 
  Reference    Z. Naturforsch. 38b, 208—211 (1983); eingegangen am 13. Oktober 1982 
  Published    1983 
  Keywords    Pyrrolidinium-bis(diisopropylphosphinoyl)phosphide, Crystal Structure, NMR Spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0208.pdf 
 Identifier    ZNB-1983-38b-0208 
 Volume    38 
144Author    W. Urland, E. WarkentinRequires cookie*
 Title    Darstellung and Kristallstruktur  
 Abstract    von [(C6H5)4As]2M(N03)5 (M = Ho, Er, Tm, Yb) Preparation and Crystal Structure of [(C6H5)4As]2M(N03)5 (M = Ho, Er, Tm, Yb) The compounds [(C6H5)4As]2M(N03)5 (M = Ho, Er, Tm, Yb) were prepared and in-vestigated by X-ray diffraction. It has been found that they are isotypic with [(CeH5)4As]2Eu(N03)5. The structure was refined by single crystal data for [(C6H5)4Asj2Er(N03)5. 
  Reference    Z. Naturforsch. 38b, 299—302 (1983); eingegangen am 29. November 1982 
  Published    1983 
  Keywords    Preparation, Pentanitrates of Lanthanides, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0299.pdf 
 Identifier    ZNB-1983-38b-0299 
 Volume    38 
145Author    Achim Müller, Winfried Hellmann, Uwe Schimanski, Rainer Jostes, WilliamE. NewtonRequires cookie*
 Title    On the Central Role of Sulfur in Multi Metal Aggregates with Different Electron Populations: [S2WS2CoS2WS2]' 1 - (n -2, 3)  
 Abstract    The hetero metal sulfur aggregates [Co(WS4)2] n ~ (with variable electron popula-tion: n = 2, 3) could be isolated as salts and characterized by physical measurements (in-cluding X-ray structure analysis). Experimental and theoretical investigations show that due to a strong metal -> ligand electron delocalisation WS4 2-(like M0S4 2 -) is a non-innocent ligand and that the additional charge upon reduction is located mainly at the S atoms of the ligand system. 
  Reference    Z. Naturforsch. 38b, 528—529 (1983); eingegangen am 12. November 1982 
  Published    1983 
  Keywords    Preparation, Crystal Structure, Molecular Structure, Electronic Structure, Thioanions 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0528_n.pdf 
 Identifier    ZNB-1983-38b-0528_n 
 Volume    38 
146Author    Ulrich Müller, Paul KlingelhöferRequires cookie*
 Title    /3-NbBr5, eine neue Modifikation von Niobpentabromid mit einer eindimensionalen Lagenfehlordnung ß-NbBrs, a New Modification of Niobium Pentabromide Having One-Dimensional Stacking Disorder  
 Abstract    While trying to react NbBrs with sulfur in a closed tube, crystals of the new modification /?-NbBra were obtained. Its X-ray diffraction patterns have sharp reflexions and diffuse streaks showing the presence of a one-dimensional disorder. From the sharp reflexions alone, a statistically averaged sub-structure results; it has the space group Ccmm and the lattice constants ao = 644, bo = 1867 and Co = 615 pm. Taking into account the diffuse streaks, the true structure was deduced; its lattice constants are a = 2ao, c = Co, b indefinite due to the disorder. /?-NbBrs is isostructural to tantalum pentaiodide. It consists of layers of (NbBrs)2 molecules that are stacked with displacement faults in the direction of b. The bromine atoms have a hexagonal close-packing arrangement. 
  Reference    Z. Naturforsch. 38b, 559—561 (1983); eingegangen am 25. Januar 1983 
  Published    1983 
  Keywords    Niobium Pentabromide, Crystal Structure, Stacking Faults 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0559.pdf 
 Identifier    ZNB-1983-38b-0559 
 Volume    38 
147Author    Gerhard Thiele, Kurt WittmannRequires cookie*
 Title    Über Hydraziniumsalze von Iodoplatinaten On Hydrazinium Salts of Iodoplatinates  
 Abstract    The new compounds (N2H5)2Ptl6 and (^Hs^Ptls • H2O were obtained by reaction of H2PtCl6 with N2H5CI and HI in aqueous solutions. In the crystal structure of the ortho -rhombic bis[hydrazinium(+I)]hexaiodoplatinate(IV) (^Hs^Ptle the N2H5+ cations and Ptlö 2-anions build up a K^PtClß-like arrangement. Bis[hydrazinium(+I)]pentaiodo-platinate(II,IV)hydrate, (N2Hs)2Ptl5 • H20, is classed with the group of linear chain mixed-valence platinum complexes which have highly anisotropic properties. In the crystal structure are structurally undistinguishable Ptl4-units (Pt-I = 264 pm) connected by asymmetric I-bridges (Pt-I = 270 pm and 338 pm) to 1 [Ptl4l2/2] chains. 
  Reference    Z. Naturforsch. 38b, 674—679 (1983); eingegangen am 15. Februar 1983 
  Published    1983 
  Keywords    Iodoplatinates, Hydrazinium Salt, Mixed-Valence Compound, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0674.pdf 
 Identifier    ZNB-1983-38b-0674 
 Volume    38 
148Author    H.-J Kraus, H. Werner, C. KrügerRequires cookie*
 Title    Synthese und Struktur von C5Me5Pd(PR3)X: Palladiumkomplexe mit einem unsymmetrisch gebundenen Pentamethylcyclopentadienylring [ 1 ] Synthesis and Structure of CsMe5Pd(PR3)X: Palladium Complexes with an Unsymmetrically Bonded Pentamethylcyclopentadienyl Ring [1]  
 Abstract    The complexes C5Me5Pd(PR3)X (1-4) are prepared from [Cl(PR3)Pd]2(iM-OCOCH3)2 and TICsMes. Attempts to replace the halide ligand by a second CsMes or a C5H5 unit remained unsuccessful. The X-ray structure analysis of C5MesPd[P(i-Pr)3]Cl (3) indicates that the five-membered ring shows a tendency of »^-bonding towards the metal. Das Interesse an Pentamethylcyclopentadienyl-metall-Verbindungen ist in den letzten Jahren stän-dig gestiegen, nachdem an zahlreichen Beispielen gezeigt werden konnte, daß die Einführung des CsMes-an Stelle des CsHs-Liganden eine Zunahme der Stabilität der Ring-Metall-Bindung bewirkt [2], In der Reihe der Platinmetalle sind Komplexe mit CsMes vor allem von Rhodium und Iridium darge-stellt und auch strukturell charakterisiert worden; die Arbeiten von P. M. Maitlis und seiner Gruppe haben hier bahnbrechend gewirkt [3]. Im Vergleich dazu ist nur relativ wenig über Pentamethylcyclopentadienylpalladium-Verbindun-gen bekannt. Wir hatten kürzlich gefunden [4], daß bei der Umsetzung der Acetat-verbrückten Zwei-kernkomplexe [Cl(PR3)Pd]2(//-OCOCH3)2 mitTICsHö die Verbindungen (^ 5 -C5H5)Pd(?? 1 -C5H5)PR3 entste-hen, die in Lösung ein fluktuierendes Verhalten zei-gen. Aufgrund von !H-und 13 C-NMR-spektrosko-pischen Messungen sind zwei dynamische Prozesse nachweisbar, wobei der Prozeß mit der größeren Aktivierungsenergie ein nja-(bzw. rf/r] 1 -)-Aus-tausch der beiden unterschiedlich gebundenen Cy-clopentadienylliganden und derjenige mit der kleine-ren Altivierungsenergie eine metallotrope Umlage-rung ist. Die Koaleszenztemperatur für den 
  Reference    Z. Naturforsch. 38b, 733—737 (1983); eingegangen am 1. März 1983 
  Published    1983 
  Keywords    Pentamethylcyclopentadienylpalladium Complexes, Synthesis, Crystal Structure, Bonding Mode 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0733.pdf 
 Identifier    ZNB-1983-38b-0733 
 Volume    38 
149Author    Roland Schmidt, Wolfgang Hiller, Gerhardt PausewangRequires cookie*
 Title    Peroxofluorokomplexe der Übergangsmetalle, V [1-3]  
 Abstract    Kristallstruktur von K2Ti(02)F4 • H20 (orange) mit einem Di(/i-fluoro)diperoxo-hexafluorodititanat(IV)-Anion Transition Metal Peroxofluoro Complexes, V [1-3] Crystal Structure of K2Ti(02)F4 • HcO (orange) with a Di(J«-fluoro)diperoxo-hexafluorodititanate(IV) Anion Orange crystals of K2Ti(02)F4 ' H20 have been obtained from aqueous solution. The crystal structure (space group P2i/n, a = 604.3(3), b = 1424.6(4), c = 761.0(2) pm, ß = 103.98°, Z = 4, dc = 2.63 gem-3 , dm = 2.62 gem-3 , R = 0.051 for 2257 independent reflections) shows isolated di(ja-fluoro)-bridged [Ti2(02)2Fg] 4 -anions, which are inter-connected by hydrogen bonded H20 forming infinite chains. 
  Reference    Z. Naturforsch. 38b, 849—851 (1983); eingegangen am 17. März 1983 
  Published    1983 
  Keywords    K2Ti(02)F4 @BULLET H20, Crystal Structure, Preparation, Properties 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0849.pdf 
 Identifier    ZNB-1983-38b-0849 
 Volume    38 
150Author    Brigitte Eisenmann, Herbert Schäfer, Heike SchrodRequires cookie*
 Title    Über das o-Natriumtelhirostannat(rV) Na4SnTe4 On the o-Sodium-tellurostannate(IV), Na4SnTe4  
 Abstract    The new compound Na4SnTe4 crystallizes in the orthorhombic system, space group P2i2i2i with lattice constants a = 865.8(5) pm, 6 = 884.0(5) pm, and c = 1526.9(8) pm. In the structure there are isolated SnTe4 4 ~-tetrahedra. In seinen binären Chalkogenverbindungen tritt das Zinn gegenüber 0, S und Se in den beiden Oxi-aationsstufen 11+ und IV + auf, während mit Tellur bisher nur das SnTe charakterisiert werden konnte. Auch in ternären Telluriden ist mit Aus-nahme des AggSnTee [1, 2] und des K2SnTe5 [3] Zinn in der Oxidationsstufe IV+ gegenüber Tellur unbekannt. Es überrascht daher, daß sich die Ver-bindung Na4SnTe4, wie wir jetzt fanden, in glatter Reaktion aus den Elementen synthetisieren läßt. Darstellung Zur Darstellung wurden die Elemente in stöchio-metrischen Anteilen unter feuchtigkeits-und sauer-stofffreier Argonatmosphäre in eine bei 150 °C vor-getrocknete Quarzampulle eingewogen. Dabei mußte das Natrium, um den Verlust durch die Reaktion mit dem Gefäßmaterial auszugleichen, nach empi-rischem Befund im Überschuß von ca. 15 Gew.-% zugesetzt werden. Die Ampullen wurden eva-kuiert, abgeschmolzen und in mit Argon gefüllten 
  Reference    Z. Naturforsch. 38b, 921—923 (1983); eingegangen am 17. Mai 1983 
  Published    1983 
  Keywords    o-Sodiumtellurostannate(IV), Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0921.pdf 
 Identifier    ZNB-1983-38b-0921 
 Volume    38 
151Author    Ali Mahan, Albrecht MewisRequires cookie*
 Title    A B2X2 -Verbindungen mit CaAl2Si2-Struktur, IX [1] Compounds with the CaAl2Si2 Structure, IX [1]  
 Abstract    The compounds ZrCu2P2, YZnCuP2, LaZnCuP2, and CeZnCuP2 have been prepared and their structures have been determined. They are isotypic and crystallize trigonally in the CaAl2Si2-type structure (space group P3m 1) with the lattice constants: ZrCu2P2 a = 381,2(1) pm, c = 617,1(2) pm, YZnCuP2 a = 398,3(1) pm, c = 652,3(2) pm, LaZnCuP2 a = 408,2(1) pm, c = 674,2(2) pm, CeZnCuP2 a = 406,4(1) pm, c = 669,7(2) pm. 
  Reference    Z. Naturforsch. 38b, 1041—1045 (1983); eingegangen am 13. Mai 1983 
  Published    1983 
  Keywords    Ternary and Quaternary Phosphides, Copper, Zinc, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1041.pdf 
 Identifier    ZNB-1983-38b-1041 
 Volume    38 
152Author    Sigurd Elz, Armin Buschauer, Martin Dräger, Walter SchunackRequires cookie*
 Title    Darstellung, Eigenschaften und Kristallstruktur der N-[2-(4.5.6.7-Tetrahydro-2-benzimidazolyl)-ethyl] -phthalamidsäure Preparation, Properties and Crystal Structure of N-[2-(4.5.6.7-Tetrahydro-2-benzimidazolyl)-ethyl]-phthalamic Acid  
 Abstract    During syntheses using the phthalimide rest in liquid, ethanolic or aqueous ammonia, phthalamides, phthalimides or phthalamic acids are formed depending on reaction condi-tions and work-up. As demonstrated by the synthesis of the title compound via hydrolysis of 4 with aqueous ammonia, dipolar ions of phthalamic acids are obtained if the phthal-imide-N substituent is sufficiently basic. The crystal structure of 5 • 4H2O has been determined and refined until R = 0.0878. It shows a vast system of hydrogen bonds. 
  Reference    Z. Naturforsch. 38b, 1203—1207 (1983); eingegangen am 3. Juni 1983 
  Published    1983 
  Keywords    Crystal Structure, Phthalamic Acid, Phthalamide, Phthalimide 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1203.pdf 
 Identifier    ZNB-1983-38b-1203 
 Volume    38 
153Author    Bernhard Lippert, Helmut Schöllhorn, Ulf ThewaltRequires cookie*
 Title    Platin in seiner ungewöhnlichen Oxidationsstufe —III: Diplatin(III)-Komplexe der Modellnukleobase 1-Methyluracil Platinum in its Unusual Oxidation State -fill: Diplatinum(III) Complexes with the Model Nucleobase 1-Methyluracil  
 Abstract    Oxidation of the head-tail dimer cis-[(NH3)2Pt(l-MeU)]2(N03)2 (1-MeU = 1-methyl-uracilato anion, C5H5N2O2) with a mixture of nitrous and nitric acid yields three crystalline 
  Reference    Z. Naturforsch. 38b, 1441—1445 (1983); eingegangen am 15. Juli 1983 
  Published    1983 
  Keywords    Diplatinum(III), Crystal Structure, 1-Methyluracil Complex 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1441.pdf 
 Identifier    ZNB-1983-38b-1441 
 Volume    38 
154Author    Hubert Schmidbaur, Beatrix Milewski-Mahrla, FritzE. WagnerRequires cookie*
 Title    Synthese, Struktur und Sb-Mößbauer-Spektren kovalenter und ionischer Tetraorganoantimon(V) -Verbindungen Synthesis, Structure and Sb-Mößbauer Spectra of Covalent and Ionic Tetraorganoantimony(V) Compounds  
 Abstract    Tetramethylstibonium and tetraphenylstibonium oxinate*(l, 2) and anthranilate (4, 5) have been prepared from the antimony pentaorganyls and 8-oxy-quinoline or anthranilic acid, respectively. The crystal structure determination of 1 revealed covalent molecules with planar bidentate oxinate as part of a distorted coordination octahedron at antimony. -121 Sb-Mößbauer spectra of 1, 2, 4, 5 and of tetramethylstibonium acetylacetonate (3) are also in agreement with covalent structures, but a pentacoordinate environment of Sb is more likely for the anthranilates 4, 5. The spectra of the hydrogendicarboxylates 6-9, however, point to ionic stuctures with, if any, only weak donor interactions of the anions with the stibonium cations. 
  Reference    Z. Naturforsch. 38b, 1477—1483 (1983); eingegangen am 14. Juli 1983 
  Published    1983 
  Keywords    Organoantimony Compounds, Mößbauer Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1477.pdf 
 Identifier    ZNB-1983-38b-1477 
 Volume    38 
155Author    Siegfried PohlRequires cookie*
 Title    Synthesis and Crystal Structure of a Polymeric Adduct of 2,2'-Dipyridil and Iodine: CioHgN^  
 Abstract    The reaction of 2,2'-dipyridil with iodine (I2; molar ratio 1:3) in CH2C12 solution yields the polymeric complex 2,2'-dipyridil(I2)3. The crystal structure of the compound was determined from single crystal X-ray data (monoclinic, C2/c, a — 3215.0(16), b = 439.9(1), c = 1824.1(9) pm, ß = 130.79(3)°, Z = 4). 2,2'-Dipyridil(I2)3 forms infinite chains of alternating Iß units and bifunctional dipyri-dil molecules. 
  Reference    Z. Naturforsch. 38b, 1535—1538 (1983); eingegangen am 12. Juli 1983 
  Published    1983 
  Keywords    2, 2'-Dipyridil(I2)3, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1535.pdf 
 Identifier    ZNB-1983-38b-1535 
 Volume    38 
156Author    Uwe Klingebiel, Norbert Vater, William Clegg, Martin Haase, GeorgeM. SheldrickRequires cookie*
 Title    Synthesis of Silicon-Phosphorus-Rings - Structure of a cis-2,2,4,4-Tetrakis(silylamino)-l,3-diphospha-2,4-disilacyclobutane  
 Abstract    Fluorosilylphosphanes of the type R2SiFPHR' (R = CHMe2, CMe3, NMeSiMe3; R' = H, C6H5; 1-4) are obtained in the reaction of difluorosilanes with lithiated phosphanes in a molar ratio 1:1. Diphosphasilanes (5, 6) and a difluorosilylphosphane (7) are isolated as by-products. 1-4 react with w-QjHgLi to give cyclic silylphosphanes, LiF, and C4H10 (8-11). Dilithiated 5 reacts with F2PN(CMe3)SiMe3 to form of a four-membered SiP3-ring 12. The 31 P NMR spectra of 9 and 11 show signal coalescence for the eis-and tfrans-isomers at room temperature. The crystal structure of the cis-isomer of 11 has been determined. The substituted ring 13 is prepared in the reaction of lithiated 9 and Me2SiF2. 
  Reference    Z. Naturforsch. 38b, 1557—1562 (1983); eingegangen am 6. Juli 1983 
  Published    1983 
  Keywords    Fluorosilylphosphanes, Cyclisation, P-Inversion, Isomers, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1557.pdf 
 Identifier    ZNB-1983-38b-1557 
 Volume    38 
157Author    Borislav Bogdanović, G. Udrun, K. Oppetsch, Carl Krüger, RichardM. YnottRequires cookie*
 Title    Magnesiumorganische Innerkomplexe, Teil II [1] Ethyl(dialkylaminoalkyl)-und Ethyl(4-alkoxybutyl)magnesium-Verbindungen Organomagnesium Inner Complexes, Part II [1] Ethyl(dialkylam inoalkyl)-and Ethyl(4-alkoxybutyl)magnesium Compounds  
 Abstract    The reaction o f bis(dialkylam inoalkyl)-and bis(4-alkoxybutyl)m agnesium inner com plexes with M gEt2 leads to the form ation of ethyl(dialkylam inoalkyl)-and ethyl(4-alkoxybutyl)m agnesium com pounds. The X -ray crystal structures o f ethyl(3-N ,N -dim ethylam inopropyl)m agnesium and ethyl(3-N -cyclohexyl-3-N -m ethylam inopropyl)m agnesium confirm that the com pounds are dim eric with the a-C -atom o f the chelating ligand bridging the magnesium atoms. The difference in reactivity of the M g —Et and M g—C"H2nX bonds (X = NR 'R ", O R) makes itself apparent in the reaction of these com plexes with ethylene: up to six ethylene m olecules are inserted, whereby in the case of the ethyl(4-alkoxybutyl)m agnesium com pounds insertion occurs preferentially into the M g—Et bond w hereas in the case o f the ethyl(dialkylam inoalkyl)m agne-sium com pounds both bonds are equally reactive. 
  Reference    Z. Naturforsch. 41b, 617 (1986); eingegangen am 21. N ovem ber 1985 
  Published    1986 
  Keywords    M agnesium, Inner C om plexes, Crystal Structures 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0617.pdf 
 Identifier    ZNB-1986-41b-0617 
 Volume    41 
158Author    HeribertW. Adle, Elke Conradi, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Synthese und Kristallstruktur von [W Cl3(N 3S2)(Pyridin)] Synthesis and Crystal Structure of [WCl3(N 3S2)(Pyridine)]  
 Abstract    1,1.1 -T richloro-1 -pyridine-cyclo-1 Ä6-tungsta-3.5-dithia-2,4, 
  Reference    Z. Naturforsch. 41b, 796—798 (1986); eingegangen am 14. Februar 1986 
  Published    1986 
  Keywords    6-triazine, Synthesis, IR Spectra, Crystal Structure 
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 Identifier    ZNB-1986-41b-0796_n 
 Volume    41 
159Author    KurtO. KleppRequires cookie*
 Title    Darstellung und Kristallstruktur von TI3AgTe2 Preparation and Crystal Structure of Tl3A gTe2  
 Abstract    The new compound Tl3A gTe2 was prepared by the reaction of Tl5T e3, Ag and Te at 550 °C, followed by slow cooling of the melt. It forms black crystals of metallic lustre which decompose by the influence of humidity. Tl3A gTe2 is monoclinic, space group P2,/c, with a = 11.020(5), b = 7.427(2), c = 9.888(3) Ä , ß — 116.62(4)°, Z = 4. The crystal structure was determ ined from four-circle diffractom eter data and refined to a conventional R of 0.083 for 1015 observed reflec­ tions. Tl3AgTe2 crystallizes with a new structure type, characterized by infinite layers, 2[A gT e2], running along (100), which are separated from each oth er by thallium atom s. The layers are built up by pairs of edge sharing A gTe4-tetrahedra linked together by common Te atoms according to |[A g (T e)T e 3/3]. The crystal structure is based on an arrangem ent of distorted c.p. tellurium layers, stacked along [010] (stacking sequence h2). All octahedral voids are occupied by Tl-atoms, Ag-and Tl-atoms are regularly distributed over the tetrahedral sites. 
  Reference    Z. Naturforsch. 41b, 941 (1986); eingegangen am 17. März 1986 
  Published    1986 
  Keywords    Ternary Chalcogenides, Thallium Silver Telluride, Crystal Structure, Preparation 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0941.pdf 
 Identifier    ZNB-1986-41b-0941 
 Volume    41 
160Author    Vicente Fernández, Moisés Morán, JuanCarlos Doadrio, Elke Conradi, Wolfgang Willing, Ulrich MüllerRequires cookie*
 Title    EPR-Spektren von Tetrachlorocupraten verschiedener Aminothiazoliumderivate. Die Kristallstrukturen von 2-Amino-2-thiazolinium-und 2-Amino-4-methylthiazoliumtetrachlorocuprat(II) EPR Spectra of Tetrachlorocuprates of Several Aminothiazolium Derivatives. The Crystal Structures of 2-Amino-2-thiazolinium and 2-Amino-4-methylthiazolium Tetrachlorocuprate(II)  
 Abstract    The tetrachlorocuprates. of the 2-aminothiazolium ion and of four of its substitution products, of 2-aminothiazolinium, and of 2-amino-4-carboxyl-thiazolidinium ions were prepared from the cor-responding heterocyclic bases, hydrochloric acid and copper(II) chloride in ethanol. The thermo-chromic compounds were characterized by their IR and electronic spectra. The EPR spectra of solutions, frozen solutions, and of the solids show the CUC14 2 ~ ion to have the structure of a flattened tetrahedron; in the case of some of the solids, distortions from D 2 d symmetry are observed. This was confirmed by two X-ray crystal structure determinations. Crystal data: 2-amino-2-thiazolinium tetrachlorocuprate, monoclinic, space group C2/c, a = 2772.8, b = 780.0, c = 1560.0 pm, ß = 112.04°, Z = 8 (R = 0.047 for 2527 observed, independent reflexions); 2-amino-4-methylthiazolium tetrachlorocuprate, triclinic. PI, a = 780.4, b = 853.4, c — 1381.4 pm, a = 103.50, ß = 99.39, y = 104.17°, Z = 2 (R = 0.041 for 3319 reflexions). In both compounds the flattened CuCl 4 2 " tetrahedron is distorted and has two bond angles in the range between 130 and 141°. The heterocyclic cations are protonated at their ring N atoms; the corresponding H atoms and the H atoms of the amino groups are involved in N — H--C1 hydrogen bonding. 
  Reference    (Z. Naturforsch. 42b, 15—22 [1987]; eingegangen am 31. Juli 1986) 
  Published    1987 
  Keywords    Aminothiazolium Derivates, Tetrachloro Cuprates, EPR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0015.pdf 
 Identifier    ZNB-1987-42b-0015 
 Volume    42 
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