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1988 (283)
21Author    RichardP. Kreher, Thomas HildebrandRequires cookie*
 Title    Structure and Reactivity of Isoannellated Heterocyclic Systems with 4nji-and (4/7+2);r-Electrons, XIV [1] Tri-and Tetracyclic Hetarenes with Localized or Delocalized Pyrrole Units  
 Abstract    2,7-Di-/er/-butyl-2,7-dihydro-benzo[ 1,2-c:3,4-c']dipyrrole (2b) and 2,5,8-Tri-rm-butyl-5.8-di-hydro-2H-benzo[l,2-c:3,4-c':5,6-c"]tripyrrole (3b) have been prepared by acetolysis of the cor-responding tri-and tetracyclic N-oxides, isolated in crystallinic form and characterized by spec-troscopic data. The scope of the N-oxide route is documented and the existence of benzo-annellated pyrroles is proofed. The stabilizing effect of the tert-butyl group is presumably sup-ported by the vicinal annellated heterocycles. 
  Reference    (Z. Naturforsch. 43b, 125—131 [1988]; eingegangen am 15. September 1987) 
  Published    1988 
  Keywords    Benzo-annellated Di-and Tripyrroles, Synthesis, Isolation, Spectroscopic Properties, Cycloaddition Reactions 
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 Identifier    ZNB-1988-43b-0125 
 Volume    43 
22Author    M. R. Bermejo, J. Bravo, A. SanchezRequires cookie*
 Title      
 Abstract    Bromo-diiodo-bis(4-methylpyridine-N-oxide)thal-lium(III), Crystal Structured Thallium(III) Halide Compounds The unit cell of TlBrI 2 (4-methylpyridine-N-oxide) 2 is orthorhombic, space group Pnna. with a = 1126.9(3),b = 919.8(2),c = 1210.4(3) pm.andZ = 4. The structure consists of discrete TlBrI 2 (4-methyl-pyridine-N-oxide) 2 molecules which have a distorted trigonal-bipyramidal geometry. The thallium atom is coordinated to two iodine atoms and a bromine atom in equatorial positions, and by two 4-methyl-pyridine-N-oxide ligands in the axial positions. 
  Reference    Z. Naturforsch. 43b, 132—133 (1988); received August 22/September 7. 1987 
  Published    1988 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0132_n.pdf 
 Identifier    ZNB-1988-43b-0132_n 
 Volume    43 
23Author    Wolfram Baumgärtner, YoussefA. Gawar-Gious, Klaus Brodersen, Nat Res, Dokki Centre, Cairo, ÄgyptenRequires cookie*
 Title    Eine schnelle Methode zur quantitativen Abtrennung von Chlor und Brom aus sauren wäßrigen Lösungen A Rapid Method for the Quantitative Elimination of Chlorine or Bromine from Aqueous Acidic Solutions  
 Abstract    Elimination. Chlorine. Bromine. Styrene The quantitative elimination of chlorine and bromine from acidic aqueous solutions was achieved through extraction with a dilute solution of styrene in CC1 4 . 
  Reference    Z. Naturforsch. 43b, 134 (1988); eingegangen am 25. September 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0134_n 
 Volume    43 
24Author    H.-Jürgen Meyer, Joachim PickardtRequires cookie*
 Title    Die Kristallstruktur von Calciumhexacyanoferrat(II)- Hexamethylentetramin-Wasser(l/l/6) Ca 2 [Fe(CN) 6 ] * C 6 H 12 N 4 * 6 H 2 0 The Crystal Structure of Calciumhexacyanoferrate(II)- Hexamethylenetetramine-Water(l/l/6) Ca 2 [Fe(CN) 6 ] * C 6 H 12 N 4 * 6 H : 0  
 Abstract    Ca 2 [Fe(CN) 6 ] • C t ,H 1 2N 4 -6H 2 0 crystallizes in the monoclinic space group B2lb with a = 1130,2(4), b = 1373,5(4), c = 1353,0(4) pm and y = 97,17°. The X-ray single crystal structure determination converged at R -0.055 (2057 reflections). Each of the four Fe(CN) 6 octahedra (Z = 4) in the unit cell is coordinated by six Ca atoms with mean N CY AN — Ca distances of 253.5(3) pm. The Ca atoms are bridged by hexamethylenetetramine and water molecules. 
  Reference    Z. Naturforsch. 43b, 135—137 (1988); eingegangen am 31. Juli 1987 
  Published    1988 
  Keywords    Crystal Structure, Hexacyanoferrate, Hexamethylenetetramine 
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 Identifier    ZNB-1988-43b-0135 
 Volume    43 
25Author    Eberhard Böhm, Kurt Dehnicke, Johannes Beck, Wolfgang Hiller, Joachim Strähle, Andreas Maurer, Dieter FenskeRequires cookie*
 Title    Die Kristallstrukturen von Ph 3 PNPh, [Ph 3 PN(H)Ph][AuI 2 ] und von 2,3-Bis(triphenylphosphoranimino)maIeinsäure-N-methyIimid The Crystal Structures of Ph 3 PNPh, [Ph 3 PN(H)Ph][AuI 2 ] and of 2,3-Bis(triphenylphosphoranimino)maleic Acid-N-methylimide  
 Abstract    [Ph 3 PN(H)Ph][AuI 2 ] (2) is formed by the reaction of Aul with N-Phenyl-iminotriphenylphos-phorane, Ph 3 PNPh in a toluene suspension. 2,3-Bis(triphenylphosphinimino)maleic acid-N-methylimide (3) has been prepared by the Staudinger reaction of 2,3-bis(azido)maleic acid-N-methylimide with PPh, in THF solution in the form of red crystals. Crystal structure determina-tions of three iminophosphoranes were carried out by X-ray methods. Ph 3 PNPh (1): space group P2]/c, Z = 4, 2176 independent observed reflexions, R = 0.057. Lattice dimensions (-30 °C): a = 1126.4, b = 1148.6, c = 1476.0 pm; ß = 97.21°. The compound forms monomeric molecules with P=N = 160.2 pm and an PNC angle of 130.4°. [Ph 3 PN(H)Ph][AuP] (2): space group PI, Z = 2, 1780 independent observed reflexions, R = 0.057. Lattice dimensions (18 °C); a = 824.9, b = 1022, c = 1476.2 pm; a = 89.23°, ß = 87.41°, y = 85.65°. The compound consists of ions [Ph 3 PN(H)Ph]® with P=N = 162.4 pm and PNC = 129.3°, and anions [Aul 2 ] e with Au-I = 261.9 and 259.3 pm, IAuI = 176.8°. (PhiP) 2 N-,C 4 0 2 (NMe) (3): space group PI, Z = 2, 4972 independent observed reflexions, R = 0.050. Lattice dimensions (-90 °C): a = 904.7, b = 993.8, c = 2017.4 pm; a = 101.55°, ß = 96.39°, y — 105.81°. The compound forms monomeric molecules with ^«-conformation of the two NPPh 3 groups. Bond lengths: P=N = 157.1; 155.3 pm, bond angles: PNC = 133°; 136°. 
  Reference    Z. Naturforsch. 43b, 138—144 (1988); eingegangen am 2. September/6. November 1987 
  Published    1988 
  Keywords    Iminophosphoranes, Synthesis, IR Spectra, Crystal Structure 
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 Identifier    ZNB-1988-43b-0138 
 Volume    43 
26Author    Karl-Friedrich Tebbe, Norbert KraußRequires cookie*
 Title    Untersuchungen an Polypseudohalogeniden, V[l] Darstellung und Kristallstruktur des Kaliumdicyanoiodats(I), K[I(CN) 2 ] Studies on the Polypseudohalides, V [1] Preparation and Crystal Structure of K[I(CN) 2 ]  
 Abstract    The new compound K[I(CN) 2 ] can be prepared by addition of one formula unit of iodine to a concentrated aqueous solution of two mole equivalents of potassium cyanide. It crystallizes in the monoclinic space group C2Im with a = 736.4, b = 451.4, c = 908.0 pm.ß = 92.56° and Z = 2. The crystal structure has been refined to R f = 0.020 for 301 observed reflections. The structure may be described as a layer-like package of cations K + and trihalide-analogous anions [I(CN) 2 ]~. The anions are strictly linear at the I atoms (symmetry 2/m) and nearly linear at the C atoms with <p(I-C-N) = 178.6° and d(I-C) = 229.8, d(C-N) = 112.9 pm. The cation is surrounded by a slightly distorted octahedron of nitrogen atoms with d(K---N) = 284.8,292.6 pm. 
  Reference    Z. Naturforsch. 43b, 149—152 (1988); eingegangen am 27. Mai/26. Oktober 1987 
  Published    1988 
  Keywords    gewidmet Potassiumdicyanoiodate, Cyanogen Compound, Polypseudohalide, Pseudotrihalide, Crystal Structure 
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 Identifier    ZNB-1988-43b-0149 
 Volume    43 
27Author    M. '., Y., M. =. Zn, Cd, =. Al, Ga, In, X. =. Se, Te, Y. =. Cl, Klaus-Jürgen Range, Karin HandrickRequires cookie*
 Title    Synthese und Hochdruckverhalten quaternärer Chalkogenidhalogenide M 2 M X 3 Y (M = Zn, Cd; M = AI, Ga, In; X = Se, Te; Y = CI, Br, I) Synthesis and High-Pressure Behaviour of Quaternary Chalcogenide Halides M  
 Abstract    Quaternary chalcogenide halides M 2 M'X 3 Y (M = Zn, Cd; M' = Al, Ga. In; X = Se. Te; Y = Cl. Br, I) can be synthesized by heating stoichiometric amounts of the binary components MX. MY 2 , and M 2 X 3 in evacuated sealed quartz ampoules. In the case of aluminium and gallium compounds, a mixture of the M' and X elements rather than the binary compounds has been used. The products are typical tetrahedral compounds, crystallizing with either the defect wurtzite-type or the defect zinc-blende-type structure. At 25 kbar. and 1400 °C, Cd 2 InSe 3 Cl. Cd 2 InSe 3 Br, and Cd 2 InSe 3 I transform from the defect wurtzite-type structure to quenchable high-pressure phases with defect NaCl-type structure. The retransformation to the ambient-pressure phases proceeds via intermediates having the defect zinc-blende-type structure. Some aspects of the apparent non-stoichiometry in the high-pressure phases are discussed. 
  Reference    Z. Naturforsch. 43b, 153—158 (1988); eingegangen am 2. November 1987 
  Published    1988 
  Keywords    Quaternary Chalcogenide Halides, Synthesis, Crystal Structure High-Pressure Reactions 
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 Identifier    ZNB-1988-43b-0153 
 Volume    43 
28Author    Thomas SchönherrRequires cookie*
 Title    Zur Existenz diskreter TeCl 5 -Ionen On the Existence of Discrete TeCl s ~ Ions  
 Abstract    Discrete mononuclear TeCl 5 " anions were prepared for the first time in solid phase in associa-tion with bulky cations as tetrabutylammonium and tetraphenylphosphonium. The vibrational spectra imply tetragonal symmetry as for the isoelectronic TeF 5 ~ anion which is caused by a stereochemically active lone pair. A complete vibrational assignment is given and supported by a normal coordinate treatment for both ions. The significance of the resulting force constants is briefly discussed. 
  Reference    Z. Naturforsch. 43b, 159—164 (1988); eingegangen am 10. August/21. September 1987 
  Published    1988 
  Keywords    Pentahalogenotellurates, Vibrational Spectra, Normal Coordinate Analysis 
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 Identifier    ZNB-1988-43b-0159 
 Volume    43 
29Author    WheiOh Lin, MariaC B V De Souza, HelmutG. AltRequires cookie*
 Title    Synthesis, Characterization and Complexation Studies with K + and Ca 2+ Cations of fraws-1.2-Cyclohexanedioxydiacetamides  
 Abstract    The synthesis of ?ram-1.2-cyclohexanedioxydiacetamides starting with frarcs-1.2-cyclohexane-diol is described. Eleven of these compounds are characterized by IR. 'H NMR, 13 C NMR and mass spectroscopy as well as elemental analyses. Most of these compounds are suitable ionophors for the cations K + and Ca 2+ . The coordination sites of these ligands in the 1:2 complexes were determined by IR and NMR spectroscopy. diacetamides and their ability to coordinate and Ca 2+ cations. 
  Reference    Z. Naturforsch. 43b, 165—170 (1988); received September 21 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0165 
 Volume    43 
30Author    Siegfried Pohl, Wolfgang Saak, Peter StolzRequires cookie*
 Title    Ph 4 P) 2 Mn 2 Br 6 und (Ph 3 PCH 2 Ph) 2 Mn 2 l6 (Ph = C 6 H 5 ) (Ph 4 P) 2 Mn 2 Br 6 and (Ph 3 PCH 2 Ph) 2 Mn 2 I 6 (Ph = C 6 H 5  
 Abstract    Dinuclear Halogeno-Manganese(II) Complexes, Synthesis, Crystal Structure (Ph 4 P) 2 Mn 2 Br 6 (1) and (Ph 3 PCH 2 Ph) 2 Mn 2 I 6 (2) were prepared from the reaction of manganese dihalide with the corresponding phosphonium halide in CH 2 C1 2 . The structures of 1 and 2 were determined from single crystal X-ray diffraction data. Both compounds crystallize in the triclinic space group PI with one formula unit per unit cell. l:a = 998.1(1), b = 1005.7(1), c = 1313.3(2) pm. a = 108.51(1), ß = 94.25(1), y = 100.36(1)°. 2: a = 1058.6(2). b = 1236.3(2), c = 1248.4(3) pm, a = 63.53(1), ß = 74.15(1), y = 74.65(1)°. The structures of 1 and 2 exhibit discrete, dimeric anions formed by the fusion of two identical tetrahedral-like units with a common halogen-halogen edge. The mean Mn —Hal bond lengths were found to be 251.8 pm (Mn-Br) and 272.2 pm (Mn-I). The difference between the bridging and terminal Mn-Hal bond lengths is about 12—13 pm in both compounds. 
  Reference    Z. Naturforsch. 43b, 171—174 (1988); eingegangen am 1. Oktober 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0171 
 Volume    43 
31Author    Peter Stolz, Siegfried PohlRequires cookie*
 Title    Iodomanganate(II): Darstellung und Kristallstrukturen von (Ph 4 P)MnI 3 L, MnI 2 L 3 , [MnIL 5 ]I 3 und [MnL 6 ](I 3 ) 2 (L = Tetrahydrofuran) Iodomanganates(II): Synthesis and Crystal Structures of (Ph 4 P)MnI 3 L, MnI 2 L 3 , [MnIL 5 ]I 3 and [MnL 6 ](I 3 ) 2  
 Abstract    The compounds (Ph 4 P)MnI 3 L (1), MnI 2 L 3 (2), [MnIL 5 ]I 3 (3), and [MnL A ](I 3) 2 (4) (L = C 4 H H O, thf) were prepared in thf solution and their structures determined from single crystal X-ray diffraction data. 1 crystallizes in the monoclinic space group C2/c with a = 1743.6(1), b — 1985.8(1), c = 1806.7(1) pm, ß = 98.74(1)°, Z = 8. The structure of 1 exhibits tetrahedral anions. The Mn—I distance was found to be 268.0 pm (mean). 2: monoclinic, C2/c with a = 1252.3(2), b = 1255.0(3), c = 1271.8(3) pm ß = 113.88(2)°, Z = 4. The characteristic feature of the structure of 2 is the existence of neutral MnI 2 L 3 molecules with a distorted trigonal bipyramidal geometry and the iodine atoms in equatorial positions (Mn —I: 271.1 pm). The compound crystallizes from a solution of Mnl 2 in tetrahydrofuran. 3: monoclinic, C2/c with a = 1695.3(1), b = 1123.1(1), c = 1646.2(1) pm, ß = 96.91(1)°, Z = 4. The preparation of 3 from 2 and iodine yields octahedral MnIL, + cations (Mn —I: 278.8 pm) and triiodide anions. 4: monoclinic, P2,//z with a = 1005.5(1). b = 1056.8(1), c -1835.6(2) pm, ß = 91.16(1)°, Z -2. 4 is prepared from 3 and iodine in thf solution, and shows octahedral MnL 6 2+ cations and triiodide anions. 
  Reference    Z. Naturforsch. 43b, 175—181 (1988); eingegangen am 19. August/20. Oktober 1987 
  Published    1988 
  Keywords    Iodo-Complexes of Manganese(II), Synthesis, Crystal Structure 
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 Identifier    ZNB-1988-43b-0175 
 Volume    43 
32Author    Rüdiger Kniep, Peter BleesRequires cookie*
 Title    Phasengleichgewichte und intermediäre Phasen im System AI—Te Phase Relations and Intermediate Phases in the AI—Te System  
 Abstract    The binary system Al —Te contains the intermediate phases AlTe (m.p. 857 °C. syntectic). Al 2 Te 3 (ot-phase stable up to 720 °C; /3-phase: m.p. 903 °C, congruent) and Al 2 Te 5 (stable be-tween 415 °C and 465 °C, incongruent). The crystal structure of a-Al-Te 3 is monoclinic (super-structure; a = 41.565(8) Ä, b = 7.189(1) A. c = 25^477(7) A.ß = 90.21(2)°. Z = 48. D, = 4.57g/cm 3). Te positions of the sub-cell (monoclinic P2,; a/3, b, cl6, ß) were determined by direct methods; Te atoms are arranged in close-packed layers which are stacked along [100] with the sequence ABCBA. A metastable cubic phase of composition Al 2 Te 3 (Zinc blende-type-structure; a = 5.949(1) Ä; Al with random distribution) is obtained by thermal decomposition of ternary compounds AlTeX (X = Cl. Br, I). 
  Reference    Z. Naturforsch. 43b, 182—188 (1988); eingegangen am 2. September 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0182 
 Volume    43 
33Author    Walter Frank, Thomas Stetzer, Ludwig HeckRequires cookie*
 Title    Darstellung und Kristallstruktur von  
 Abstract    (NH 3)5Rh(H 7 0 4)Rli(NH3)5](S 2 0 6) 2 , 5 • H 2 0 (1) Ein gemischtes Aquopentamminrhodium(III)-hydroxopentamminrhodium(III)-dithionat mit einer neuartigen /i-H 7 0 4 -Struktureinheit Preparation and Crystal Structure of [(NH 3) 5 Rh(H 7 0 4)Rh(NH 3)5](S 2 0 6) 2 .5 • H 2 0 (1) A Mixed Aquopentaamminerhodium(III)-hydroxopentaamminerhodium(III) Dithionate with a Novel //-H 7 0 4 Structural Unit Mixed Aquopentaamminerhodium(III)-hydroxopentaamminerhodium(III) Dithionate, Preparation, X-Ray The title compound 1 can be obtained from an aqueous solution of aquopentaammine rhodium(III) dithionate and hydroxopentaammine rhodium(III) dithionate. The crystal structure has been determined from single crystal X-ray diffraction data and refined to R = 0.035 for 4390 unique reflections. Crystal data: monoclinic, space group P2,/c, a = 1300.9(5) pm, b = 1472.3(6) pm, c = 1478.8(9) pm, ß = 106.20(4)°, Z = 4. In the crystal dinuclear rhodium cations with point group symmetry 1 (C,) are found. A central /<-H,0 : -bridge is formed by strong hydrogen bonding between aquo and hydroxo ligands; this bridge is additionally coordinated by two molecules of water. The entire bridging system is therefore H70_r(H 3 0 ; "-2 H : 0). O —O distances characterizing the strength of the three hydro-gen bonds within this new kind of structural unit are 0(H ; 0-Rh 1)-0(H0-Rh2): 248 pm, 0(H 2 0 —Rh 1)—0(H 2 0 a): 273 pm, 0(H0-Rh2)-0(H : 0 b): 287 pm. The hydrogen atoms in-volved in these bridges have been located. The small difference in the Rhl —0(H 2 0) — (205.4(3) pm) and Rh2-0(0H)-(204.3(3) pm) distances indicates that the entire H 7 0 4 ~-moiety serves as a ^-bridging unit between Rh 1 and Rh2. 
  Reference    Z. Naturforsch. 43b, 189—195 (1988); eingegangen am 31. Juli 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0189 
 Volume    43 
34Author    Joachim Heine, Gerd-Volker RöschenthalerRequires cookie*
 Title    Trimethylsilylphosphite und Hexafluoraceton: Phosphonate versus Dioxaphospholane — 1:1-und/oder 1:2-Addukte Trimethylsilylphosphites and Hexafluoroacetone: Phosphonates versus Dioxaphospholanes —1:1 and/or 1:2 Adducts  
 Abstract    Trimethylsilylphosphites, Hexafluoroacetone, [2,2,2-Trifluoro-l-(trifluoromethyl)-l-(trimethylsiloxy)ethyl]phosphonates, 4,4,5,5-Tetrakis(trifluoromethyl)-l,3,2A 5 (7 4 (cr ,)-dioxaphospholanes 
  Reference    Z. Naturforsch. 43b, 196—202 (1988); eingegangen am 21. September 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0196 
 Volume    43 
35Author    Ralf Steudel, Thomas Göbel, Gabriele HoldtRequires cookie*
 Title    The Molecular Composition of Hydrophilic Sulfur Sols Prepared by Acid Decomposition of Thiosulfate [1]  
 Abstract    Hydrophilic sulfur sols prepared from sodium thiosulfate and concentrated sulfuric acid and purified by repeated NaCl precipitation and peptization in water have been studied by chemical analysis, vibrational spectroscopy, ion-pair chromatography and reversed-phase HPLC. The composition of the sol is Na 164 S 28 . 6 0 6 • 5.9In S" • 1.0 NaCl. The elemental sulfur S" (n = 6-14; mainly S 8) accounts for 17% the total sulfur; 83% of the S are present as long-chain polythionates which form micelles in which the S" molecules are dissolved. On aging of the sol at 20 °C the polythionate micelles decompose to give water-soluble short-chain polythionates and elemental sulfur which precipitates from the solution. The micelle structure of hydrophilic sulfur sols may serve as a model for the so-called sulfur globules (S°) formed intra-or extracellularly by many sulfur bacteria which oxidize reduced sulfur compounds to S°. — Infrared and Raman spectra of K 2 S m 0 6 (m = 3—6) are reported. The photodecomposition of aqueous tetrathionate yields sulfite, thiosulfate, and polythionates with up to 9 sulfur atoms. 
  Reference    Z. Naturforsch. 43b, 203—218 (1988); received August 3 1987 
  Published    1988 
  Keywords    Sulfur Sol, Polythionates, Elemental Sulfur, Thiosulfate Decomposition, Sulfur Bacteria 
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 Identifier    ZNB-1988-43b-0203 
 Volume    43 
36Author    Wolfgang Hönle, Juliane Wolf, Hans Georg, SchneringRequires cookie*
 Title    Substituierte Heptaarsane(3)  
 Abstract    As 7 (Mme 3)3 (M = Si, Ge, Sn) mit Nortricyclenstruktur Substituted Heptaarsanes(3) As 7 (Mme 3) 3 (M = Si, Ge, Sn) with Nortricyelene Structure The heptaarsanes(3) As 7 (Mme 3) 3 (M = Si, Ge, Sn) with nortricyclene structure have been synthesized by heterogeneous and homogeneous reactions from K 3 As 7 and Rb 3 As 7 , respectively, with Mme 3 Cl. The crystal structures have been determined. The compounds are isotypic and crystallize in unit cells of R3 symmetry, containing pairs of enantiomers. The bond lengths d(As—As) in the nortricyclene skeleton are nearly uneffected by the substituents and show the sequence typical for covalent nortricyclenes: d(basal) = 244.3 pm > d(basal-equatorial) = 242.7 pm > d(equatorial-apical) = 240.7 pm (mean values). The spread-off of the Mme, sub-stituents decreases as going from P 7 to As 7 skeletons as well as with increasing size of M. 
  Reference    Z. Naturforsch. 43b, 219—223 (1988); eingegangen am 26. Oktober 1987 
  Published    1988 
  Keywords    Heptaarsa-nortricyclene, Crystal Structure, Silyl-, Germyl-and Stannyl-Substituted Heptaarsanes(3) 
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 Identifier    ZNB-1988-43b-0219 
 Volume    43 
37Author    C., Karl Brunn, Helmut Endres, Johannes WeissRequires cookie*
 Title    Reaktionen des organischen Donors Tetra(methylthio)tetrathiafulvalen mit Kupfer-und Goldhalogeniden: (TTM-TTF) (Cul) 2 , (TTM-TTF) + [CUC12]", (TTM-TTF) 2+ [AUC14]2- Reactions of the Organic Donor Tetra(methylthio)tetrathiafulvalene with Halides of Copper and Gold: (TTM-TTF)(CuI) 2 , (TTM-TTF) + [CUCL]~, (TTM-TTF) 2+ [AUC14]2 _ and C 4 H 6 S 4 AuCl 2  
 Abstract    Cation Radical Salt, Structure (TTM-TTF)(CUI) 2 , {TTM-TTF = Tetra(methylthio)-tetrathiafulvalene}, the product of the reaction of TTM-TTF with Cul in an l 2 atmosphere, is monoclinic C2/m, a = 7.928(2). b = 13.272(1), c -10.523(2) Ä, ß 107.82(2)°' V -1054 Ä 3 , Z = 2, d c = 2.42 gem V = 56.8 cm 1 , final R w = 0.027 for 964 reflections and 59 variables. The donor acts as a bridging chelate ligand by coordination of the SCH 3 -groups to Cu. (TTM-TTF) + [CuCU]~ is triclinic PI, a = 7.253(1), b = 7.657(1). c = 10.256(1) Ä, a = 89.63(1), ß = 89.98(1), y — 73.26(1)°, V = 470 Ä 3 , Z -l,d c -2.07 gem" 1 .// = 22.95 cm" 1 , final R k = 0.029 for 1871 reflections and 104 variables. Stacks of the (TTM-TTF) + radical cations with intrastack S-S-contacts of 3.792(2) Ä. (TTM-TTF) 2 *[AuCl 4 ]->~ and C 4 H 6 S 4 AUC1-> were obtained as products of the reaction of TTM-TTF with AuCl, in acetonitrile. (TTM-TTF) 2+ [AUC1 4 ]," is monoclinic, C2, a = 14.799(2), 
  Reference    Z. Naturforsch. 43b, 224—230 (1988); eingegangen am 1. Oktober 1987 
  Published    1988 
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 Identifier    ZNB-1988-43b-0224 
 Volume    43 
38Author    HerbertW. Roesky, Karsten Swarat, Frank EdelmannRequires cookie*
 Title    Darstellung eines cyclischen Ferrocenderivates mit Wolfram (VI) Preparation of a Cyclic Ferrocene Derivative of Tungsten(VI)  
 Abstract    Ph2PC 5 H4FeC 5 H4PPh2 (1) reacts with Me3SiN3 with evolution of nitrogen to yield (Me3SiN = PPh2C 5 H4)2Fe (2). Treatment of 2 with WF6 results in the formation of (C 5 H4PPh2N)2FeWF4 (3). 3 is a rare example of a metal complex containing two metal atoms in very different oxidation states. 
  Reference    Z. Naturforsch. 43b, 231—232 (1988); eingegangen am 13. Oktober 1987 
  Published    1988 
  Keywords    Phosphorus, Heterocycles, Mass Spectra 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0231.pdf 
 Identifier    ZNB-1988-43b-0231 
 Volume    43 
39Author    A. M. Khan, Suman Gupta, J. C. Katiyar, M.Shamim Akhtar, V. L. Sharma, A. P. BhaduriRequires cookie*
 Title    Studies on Enteric Anthelmintics: Impact of Single Point Structural Change on the Activity Profile  
 Abstract    The impact of change only in one heteroatom in the substituent at position 5(6) of methyl benzimidazole-2-carbamates on the profile of anthelmintic activity against intestinal worms An-cylostoma ceylanicum (hookworm), Nippostrongylus brasiliensis (trichostrongylid), Syphacia obvelata (oxyurid) and Hymenolepis nana (cestode) has been studied. The observations made are likely to evoke interest for understanding the SAR in methyl benzimidazole-2-carbamates anthel-mintics at a molecular level. 
  Reference    Z. Naturforsch. 43b, 233—237 (1988); received May 20 1987 
  Published    1988 
  Keywords    Anthelmintic Activity, Intestinal Worm Benzimidazole Carbamates, Structural Change, Heteroatom 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0233.pdf 
 Identifier    ZNB-1988-43b-0233 
 Volume    43 
40Author    Horst Sabrowsky, Karin Paszkowski, Dagmar Reddig, Petra VogtRequires cookie*
 Title    Na 3 OCl and Na 3 OBr, the First Alkali Metal Chalcogenide Halides  
 Abstract    Alkali Metal Chalcogenide Halides The colourless compounds Na3OCl and Na,OBr have been prepared and characterized by X-ray dif-fraction techniques. Na3OCl crystallizes in a cubic primitive lattice with a = 450.0(3) pm (Z = 1). Na3OBr is isotypic with Na3OCl and its lattice con-stant is a = 457.3(5) pm. The structures are related to the arcfr-perowskitetype. 
  Reference    Z. Naturforsch. 43b, 238—239 (1988); eingegangen am 26. Oktober 1987 
  Published    1988 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0238_n.pdf 
 Identifier    ZNB-1988-43b-0238_n 
 Volume    43 
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