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41Author    Beate Zimmer-Gasser, Dietmar Neugebauer, Ulrich Schubert, HansH. KarschRequires cookie*
 Title    Funktionelle Trimethylphosphinderivate, XIII [1] Stabilisierte Carbanionen: Die Molekülstruktur von {[(CHa^PJgCjla Functional Derivatives of Trimethylphosphine, XIII [1] Stabilized Carbanions: The Molecular Structure of {[(CH3)3P]3C}l2  
 Abstract    The title compound crystallizes in the space group Cmc2i with a = 1086(1), b = 1333(1) and c — 1264(1) (Z = 4). The cation exhibits C8-symmetry with a crystallographic mirror plane perpendicular to the plane of the cation. Thus only two of the three phosphonium groups are stereochemically equivalent. In the planar P3C-moiety the P-C distances are 175 pm, the P-C-P angles 126.5° and 116.7°, respectively. 
  Reference    Z. Naturforsch. 34b, 1267—1269 (1979); eingegangen am 11. Juni 1979 
  Published    1979 
  Keywords    Stabilized Phosphorous Ylid, Charge Derealization, X-ray 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1267.pdf 
 Identifier    ZNB-1979-34b-1267 
 Volume    34 
42Author    Joachim Fuchs, Hans-Ulrich Kreusler, Achim FörsterRequires cookie*
 Title    Die Kristallstruktur des Rubidiumtrimolybdatosulfats Rb2SMo3013 The Structure of the Rubidiumtrimolybdatosulfate Rb2SMo30i3  
 Abstract    By acidification of an aqueous solution of Rb2MoÜ4 with sulfuric acid the rubidium trimolybdatosulfate Rb2SMo30i3 • 0.72 H20 is formed. A compound with the same composition and evidently the same structure but free of crystal water is obtainable by melting a mixture of Rb2SC>4 and M0O3 in molar ratios 1:3. The X-ray structure in-vestigation shows the anion to be built up from double chains of MoOß octahedra. Always three neighbouring octahedra are linked about common vertices with one SO4 tetrahedron. The tetrahedra are alternating above and below the double chain. -Rb2SMo30i3 is the first known macromolecular heteropolymolybdate. 
  Reference    Z. Naturforsch. 34b, 1683—1685 (1979); eingegangen am 6. August 1979 
  Published    1979 
  Keywords    Heteropolysulfate, Rubidiumtrimolybdatosulfate, X-ray, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1683.pdf 
 Identifier    ZNB-1979-34b-1683 
 Volume    34 
43Author    M. VeithRequires cookie*
 Title    Cyclische Diazastannylene, VIII [1] Die Kristall-und Molekülstruktur eines Iminostannylens: Sn3 (NC(CH3 )3 )4 H2 Cyclic Diazastannylenes, VIII [1] The Crystal and Molecular Structure of an Iminostannylene: Sn3(NC(CH3)3)4H2  
 Abstract    The crystal and molecular structure of the compound Sn3(NC(CH3)3)4H2 has been determined from X-ray data (R = 0.044). The crystals are cubic, space group Pa3, with cell dimension a — 1713.6(8) pm and Z = 8. The molecules, which have a seco-norcubane like Sn3N4 framework, are statistically disordered, thus forming closed packed pairs of molecules. The Sn3N4 cage deviates strongly from a cube, the bond angles at Sn approach-ing 80°, and at N 100°. The averaged Sn-N bond distance is 223(1) pm. 
  Reference    (Z. Naturforsch. 35b, 20—24 [1980]; eingegangen am 3. September/8. Oktober 1979) 
  Published    1980 
  Keywords    Iminostannylenes, X-ray, Crystal Structure, Molecular Structure, Disorder 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0020.pdf 
 Identifier    ZNB-1980-35b-0020 
 Volume    35 
44Author    Olli Orama, Ulrich Schubert, FritzRoland Kreißl, ErnstOtto FischerRequires cookie*
 Title    Übergangsmetall-Carbin-Komplexe, LVI [1] Umsetzung eines kationischen Carbin-Komplexes mit einem Carbonylmetallat. Der Phenylketenyl-Rest als Briickenhgand Transition Metal Carbyne Complexes, LVI [1] Reaction of a Cationic Carbyne Complex with a Carbonylmetalate. The Phenylketenyl Group as a Bridging Ligand  
 Abstract    By reaction of [(jr^HsHCOfeMnEEC-CeHslBCLi with NaRe(CO)5 a new type of complex is obtained. It crystallizes in the monoclinic space group P 2i/c, Z = 4, a — 1115(1), b= 1464(1), c= 1657(2) pm, ß= 136.79(8)°. Structure determination reveals a binuclear complex, the Mn-Re bond (281.7(3) pm) of which is bridged by the a-carbon atom of a phenylketenyl group (Mn-C 221(3), Re-C 224(3) pm) and semi-bridged by a CO group (Mn-C 187(4), Re-C 254(4), Mn-C-0 160(3)°). 
  Reference    (Z. Naturforsch. 35b, 82—85 [1980]; eingegangen am 2. Oktober 1979) 
  Published    1980 
  Keywords    Carbyne Complex, X-ray, Metal-Metal Bond 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0082.pdf 
 Identifier    ZNB-1980-35b-0082 
 Volume    35 
45Author    Hans-Ulrich Kreusler, Achim Förster, Joachim FuchsRequires cookie*
 Title    Die Struktur des Rubidiumtrimolybdathydrats Rb2Mo3O10 * H20 The Structure of the Rubidiumtrimolybdate Hydrate Rb2Mo3Oi0 * H20  
 Abstract    For the first time single crystals of tri-molybdate were obtained through a slow trans-formation of the primary precipitate in a slightly acidified solution of rubidium molybdate at a temperature of 70 °C. A structural analysis of Rb2Mo30io • H20 revealed that the anion forms a chain with a hexameric identity period built up from MoOg octahedra. Each Mo atom is bonded with two terminal oxygen atoms. The anion doesn't contain OH groups. 
  Reference    Z. Naturforsch. 35b, 242—244 (1980); eingegangen am 3. September/8. November 1979 
  Published    1980 
  Keywords    Trimolybdate, Single Crystal, Preparation, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0242_n.pdf 
 Identifier    ZNB-1980-35b-0242_n 
 Volume    35 
46Author    Il-Hwan Suh, Gabriela Weber, Menachem Kaftory, Wolfram Saenger, Heinz Sieger, Fritz VögtleRequires cookie*
 Title    Structural Change of a Linear Polyether upon Complex Formation. l.ll-Bis(2-acetylaminophenoxy)-3.6.9-trioxaundecane and its KSCN Complex"  
 Abstract    The title compound (1) was crystallized as free ligand and as its (1 • KSCN)2 • H20 complex. Crystallographic data are, for the former: space group C 2/c, a — 31.110(9), b = 4.608(4), c = 17.188(6) A, ß = 105.27(8)°, Z = 2, Dm = 1.25 gem-3 ; for the latter: space group P2i, a = 11.044(3), b = 18.310(4), c = 14.485(4) Ä, ß = 97.49(2)°, Z = 4, Dm = 1.27 gem -3 . Crystal structures were solved by direct methods using X-ray diffrakto-meter data and least squares refinements converged at 10.8% for 1 and at 7.6% for (1 • KSCN)2 • H20. The free ligand (1) is S-shaped and, upon K+-complexation, changes signs of some gauche O-C-C-O torsion angles while C-C-O-C angles remain trans. In (1 • KSCN)2 • H20, there are two complex molecules 1 A • KSCN • H20 (I) and 1 B • KSCN (II). The ligands are wrapped circularly around K + and coordinated with only four of the five polyether oxygens. K+ interacts further with H20 in (I) and with N of SCN~ in II and, in both complexes, with acetylamino oxygen of adjacent 1. The latter interaction leads to polymeric structures not observed previously for similar complexes. 
  Reference    Z. Naturforsch. 35b, 352—359 (1980); received November 28 1979 
  Published    1980 
  Keywords    Polyether, KSCN Complex, Polymer Formation, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0352.pdf 
 Identifier    ZNB-1980-35b-0352 
 Volume    35 
47Author    Michael Kopp, LuiseR. Krauth, Richard Ratka, Klaus Weidenhammer, ManfredL. ZieglerRequires cookie*
 Title    Darstellung und Charakterisierung von 1.4-und 1.5-Dienkomplexen des Platins  
 Abstract    Röntgenstrukturanalyse von Diehloro-2.5-diphenyl-1.5-hexadienplatin(II), Cl2Pt((C6H5)2C6H8) Preparation and Characterization of 1,4-and 1,5-Diene Complexes of Platinum; X-ray Analysis of Dichloro-2,5-diphenyl-l,5-hexadiene Platinum(II), ((C^P^CöHs^CßHs) The reaction of cis-(C6H5CN)2PtCl2 and Na2PtCl4 with the dienes 1,4-pentadiene and 2,5-diphenyl-l,5-hexadiene yields the species eis-(1,4-pentadiene) PtCl2 and cis-(2,5-diphenyl-l,5-hexadiene)PtCl2, respectively. The compounds have been fully characterized by elemental analysis, IR, 1 H-NMR, mass spectroscopy and by X-ray methods. 
  Reference    Z. Naturforsch. 35b, 802—807 (1980); eingegangen am 29. Februar 1980 
  Published    1980 
  Keywords    Synthesis, Characterization, X-ray, Diene Complexes of Platinum 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0802.pdf 
 Identifier    ZNB-1980-35b-0802 
 Volume    35 
48Author    HeinzDieter Lutz, SalehM. El-Suradi, Christiane Mertins, Bernward EngelenRequires cookie*
 Title    Zur Kenntnis der Hydrate des Mangan-und Zinksulfits. Röntgenographische, thermoanaly tische, Raman-und IR-spektroskopische Untersuchungen  
 Abstract    X-ray, IR and Raman data as well as thermoanalytical measurements (DTA, TG, and DTG) of several new hydrates, viz. MnS03 • 2 1 /z H20, MnS03 • 2 H20, ZnS03 • 3 H20, /S-ZnS03 • 2 1 /2 H20, and y-ZnS03 • 2 x /2 H20, and of previously reported hydrates in the systems MnS03-H20, ZnS03-H20, and MnS03-ZnS03-H20 are presented. Furthermore, the formation of mixed crystals is studied in the system MnS03-ZnS03-H20. The following crystal data have been determined by single crystal measurements: MnS03 • 2 1 /2 H20 (P4i2i2):a = b = 968.4(1), c = 1040.9(1) pm, Z = 8, MnS03 • 2 H20 (P2i/w):a = 650.9(1), b = 873.8(1), c = 774.7(1) pm, ß = 99.80(1)°, Z = 4, ZnS03 • 3 H20 (Pnma): a = 953.6(1), b = 553.0(1), c = 941.9(1) pm, Z = 4, ß-ZnS03 • 21/2 H20 (P4i2!2): a = b = 952.1(1), c = 1025.4(1) pm, Z = 8, y-ZnS03 • 2 X \2 H20 (with small amount of Mn 2 +) (o-rh.): a = 1493(1), b = 1812(2), c = 753(1) pm, Z = 16, ZnS03 • 1/2 H20 (mon.): a = 1326.7(5), b = 706.3(2), c = 834.4(1) pm, ß = 117.41(3)°, Z = 8. The IR spectra show that, with the exception of y-ZnS03 • 2 x /2 H20, both weak and strong hydrogen bonds are present in the sulfite hydrates. Under an S02 atmosphere the sulfite hydrates can be dehydrated without simultaneous dissociation to the oxide and sulfur dioxide. The isotypic hydrates /?-MnS03 • 3 H20 and ZnS03 • 3 H20 (ß-MnSÖ3 • 3 H20 type), and MnS03 • 2 H20 and ZnS03 • 2 H20 (ZnSe03 • 2 H20 type) form complete mixed crystal series. Solid solutions are also formed from a-MnS03 • 3 H20 (a-FeS03 • 3 H20 type), y-ZnS03 • 2 l /2 H20, MnS03 • 1 H20, and ZnS03 • 1 /2 H20. No incorporation of Mn or Zn could be observed for a-ZnS03 • 2Va H20 and the isotype hydrates MnS03 • 2!/a H20 and ß-ZnS03 • 2 1 /2 H20 (CoS03 • 21/2 H20 type). 
  Reference    Z. Naturforsch. 35b, 808—816 (1980); eingegangen am 17. Dezember 1979 
  Published    1980 
  Keywords    Sulfite, Hydrates, Manganese, Zinc, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0808.pdf 
 Identifier    ZNB-1980-35b-0808 
 Volume    35 
49Author    Manfred Fild, Wolfgang Handke, WilliamS. SheldrickRequires cookie*
 Title    Methylen Verbindungen von Nichtmetallen, III [1] Metallcarbonyl-Komplexe mit methylenverbrückten Diphosphor-Liganden Methylene Compounds of Non-Metals, III [1] Metal Carbonyl Complexes of Methylene-Bridged Diphosphorus Ligands  
 Abstract    Compounds of the type R2PCH2PR2 (R = Pr«0, Me2N) react with cis-LM(CO)4 (L = Bicyclo[2,2,l]hepta-2,5-dien; M = Cr, Mo, W) complexes to yield cis-substituted [R2PCH2PR2]M(CO)4 derivatives. The structure of the molybdenum compound, [(Pr i O)2PCH2P(OPr i)2]Mo(CO)4, has been determined. Diphosphorus ligands of the type R2P(S)CH2PR2 (R = F, Pr*0) are monodentate and form [R2P(S)CH2PR2]2Mo(CO)4 complexes, whereas the compound (Me2N)2P(S)CH2P(NMe2)2 acts as a bidentate ligand. 
  Reference    Z. Naturforsch. 35b, 838—842 (1980); eingegangen am 20. Februar 1980 
  Published    1980 
  Keywords    Metal Carbonyls, Diphosphorus Ligands, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0838.pdf 
 Identifier    ZNB-1980-35b-0838 
 Volume    35 
50Author    JohannesC P M Lapidaire, AnthoniJ. De KokRequires cookie*
 Title    Dodecamethyl Bisimidotriphosphoramide (TRIPA), Part III [1, 2] The Crystal and Molecular Structure of TRIPA H20  
 Abstract    The crystal and molecular structure of dodecamethyl bisimidotriphosphoramide mono-hydrate (TRIPA • H2O, C12H38N7O4P3) has been determined by single crystal X-ray diffraction techniques. The compound crystallises in the monoclinic system, space group P2i/n with a = 9.236(3), b = 14.016(4), c = 17.534(5) A, ß = 97.32(4)°, Z = 4. The building units are dimers of TRIPA • H2O. These units are separated by normal van der Waals distances. The two molecules in the dimer are connected by four hydrogen bridges involving two water molecules. The nitrogen atoms display a nearly planar hybridisation. 
  Reference    Z. Naturforsch. 35b, 1203—1206 (1980); received May 19 1980 
  Published    1980 
  Keywords    TRIPA, X-ray, Tridentate Ligand, Phosphoryl Compound 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1203.pdf 
 Identifier    ZNB-1980-35b-1203 
 Volume    35 
51Author    K. K. Chacko, W. SaengerRequires cookie*
 Title    Crystal and Molecular Structure of l,ll-bis(Tropolone)-3,6,9-trioxaundecane * Rbl a  
 Abstract    The complex between the polyether ligand l,ll-bis(tropolone)-3,6,9-trioxaundecane and Rbl crystallizes in space group P2i/c with cell dimensions a — 11.383(4), b = 14.493(5), c = 16.122(6) A and ß = 111.02(5)° with Z = 4. The structure was solved on the basis of 3734 X-ray reflections measured on a diffractometer with CuKa-radiation and refined to an R of 0.101. The polyether wraps around the Rb + in a circular structure. One of the tropolone rings is elevated in order to avoid collision. Rb + is located 1.224(6) A above the plane formed by five oxygen atoms of the ligand, it is coordinated to I -(3.666(2)Ä) and to all oxygens. The Rb+ • • • O distances of the least electronegative "ester oxygens", 3.14(1) A and 3.18(1) A are significantly longer compared to the other Rb+---0 distances in the range 2.81(1) A to 3.08(1) A. The conformation about the C-C and C-0 bonds of the ligand are gauche and trans as generally found in such molecules. The two tropolone seven-membered rings are slightly non-planar and display an envelope-type structure. 
  Reference    Z. Naturforsch. 35b, 1533—1537 (1980); received August 7 1980 
  Published    1980 
  Keywords    Polyether, Tropolone, Rbl Complex, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1533.pdf 
 Identifier    ZNB-1980-35b-1533 
 Volume    35 
52Author    M. Pušelj, Z. BanRequires cookie*
 Title    Ternäre Gamma-Messing Phasen in den Systemen Calcium-M IB(IIB) -Quecksilber New Ternary Gamma-Brass Phases in the Systems Ca-M iB(nB)_Hg  
 Abstract    A series of new ternary intermetallic com-pounds of the general composition CaißMi8IB(IlB)_Hg18 (M = Zn, Cd, Hg, Cu, Ag and Au) has been identified. The X-ray powder diffraction patterns were indexed on a basis of primitive cubic unit cells. From the X-ray data and density measure-ments it is concluded that these phases belong to the partially disordered (Ml B (HB) and Hg) gamma-brass structure type D83. 
  Reference    Z. Naturforsch. 35b, 1594—1595 (1980); eingegangen am 18. Juli 1980 
  Published    1980 
  Keywords    Crystal Structure, Mercury, Amalgams, X-ray, Calcium 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1594_n.pdf 
 Identifier    ZNB-1980-35b-1594_n 
 Volume    35 
53Author    Joachim Fuchs, Axel Thiele, Rosemarie PalmRequires cookie*
 Title    Strukturen und Schwingungsspektren des Tetramethylammonium -a -dodekawolframatosilikats und des Tetrabutylammonium-/?-dodekawolframatosilikats Structures and Vibrational Spectra of Tetramethylammonium a-Dodecatungstosilicate and Tetrabutylammonium /?-Dodecatungstosilicate  
 Abstract    Dodecatungstosilicates free of crystal water were prepared for the first time by using tetraalkylammonium as cation. The crystal structure of the tetramethylammonium a-dodeeatungstosilicate [N(CH3)4]4SiWi2C>4o (1) and tetrabutylammonium)S-dodecatungs-tosilicate, [N(C4H9)4]4SiWi204o (2) were solved by X-ray diffraction. (1) crystallizes tetragonal in the space group 14 with lattice parameters a = 14.642 A; c= 12.706 A; (2) orthorhombic, space group P2i2x2i with a = 29.277 A, b = 22.181 A and c = 15.381 A. The differences between the two isomeric heteropolyanions are discussed, especially the distances and angles between the tungsten atoms. Comparison of characteristic differences in the vibrational spectra permits the identifica-tion of the isomeric anions. 
  Reference    Z. Naturforsch. 36b, 161—171 (1981); eingegangen am 22. Oktober 1980 
  Published    1981 
  Keywords    Dodecatungstosilicates, Isomers, X-ray, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0161.pdf 
 Identifier    ZNB-1981-36b-0161 
 Volume    36 
54Author    H. Kisch, C. Krüger, A. TrautweinRequires cookie*
 Title    Übergangsmetallkomplexe von Diazenen, XVI [1] Struktur und Mößbauerdaten von (2.3-Diazanorbornen)Fe3(CO)9 Transition Metal Complexes of Diazenes, XVI [1] Structure and Mössbauer Data of (2,3-Diazanorbornene)Fe3(CO)g  
 Abstract    The molecular structure of (2,3-diazanorbornene)Fe3(CO)9 consists of a triangular Fe3(CO)g group bound to the diazene unit. The seven-coordinated Fe(CO)3 group forms two Fe-N bonds with lengths of 1.974 and 1.965 Ä, each of the two six-coordinated Fe(CO)3 groups has slightly shorter Fe-N-bonds of 1.898 and 1.903 Ä. One Fe-Fe distance, 2.612Ä, is longer than the two other ones, 2.572 and 2.582 A, which are in the range of typical single bonds. The presence of seven-and six-coordinated iron carbonyl groups is also demonstrated by the Mössbauer spectrum showing signals with quadrupole splittings of 1.23 and 0.78, 0.62 ± 0.01 mm/s, respectively. 
  Reference    Z. Naturforsch. 36b, 205—207 (1981); eingegangen am 2. Dezember 1980 
  Published    1981 
  Keywords    Diazenes, Iron Cluster, X-ray, Mössbauer Data 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0205.pdf 
 Identifier    ZNB-1981-36b-0205 
 Volume    36 
55Author    Joachim Fuchs, Axel Thiele, Rosemarie PalmRequires cookie*
 Title    Structure and Vibrational Spectrum of the a-Undecatungstophosphate Na2[N(CH3)4]4HPWii039 * 7 H20  
 Abstract    The crystal structure of the compound Na2[N(CH3)4]4HPWn039 • 7H20 was solved by X-ray diffraction. It crystallizes in the space group C2/m with lattice parameters a= 23.895 Ä, b = 11.417 A, c = 28.930 A, ß= 126.0°. The distances between the tungsten atoms and the kind of bridging by oxygen atoms prove the a-isomer. The differences between the vibration spectra of a-undecatungsto-phosphate and a-dodecatungstophosphate are discussed. 
  Reference    Z. Naturforsch. 36b, 544—550 (1981); eingegangen am 2. Februar 1981 
  Published    1981 
  Keywords    a-Undecatungstophosphate, X-ray, Vibrational Spectra, Thermogravimetry 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0544.pdf 
 Identifier    ZNB-1981-36b-0544 
 Volume    36 
56Author    Heindirk Tom Dieck, Michael Svoboda, Thomas GreiserRequires cookie*
 Title    Bis  
 Abstract    (diazadien)metall(0)-Komplexe, IV [1] Nickel(0)-bis(chelate) mit aromatischen N-Substituenten Bis(diazadiene)metal(0) Complexes, IV [1] Nickel(0)-bis(chelates) with Aromatic N-Substituents R1R2 With N-aromatic substituted diazadienes (DAD) R 3 -N=C—C = N-R 4 (R 1 , R 2 = H, CH3 and R 3 = R 4 = aryl) nickel(O) forms complexes of composition (DAD)2Ni which are prepared preferably by reduction of Ni(II) salts in the presence of DAD. The groups R 1 , R 2 and/or the o-substituents of the aryl system determine the conformation of the DAD and its sterical ligand properties. An X-ray structure analysis of (DAD)2Ni 17 (DAD = glyoxal-bis(2,6-dimethyl-phenylimine)) shows a dihedral angle of 44° between the two chelate planes. With twisted N-aryl substituents nickel seems to prefer planar coordination (formal low spin Ni(II)) of two DADs over tetrahedrally coordinated formal nickel(O) state. 
  Reference    Z. Naturforsch. 36b, 823—832 (1981); eingegangen am 27. Mai 1980 
  Published    1981 
  Keywords    Diazadien Nickel Complexes, Planar ^ Tetrahedral Interconversion, X-ray 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0823.pdf 
 Identifier    ZNB-1981-36b-0823 
 Volume    36 
57Author    Gabriela WeberRequires cookie*
 Title    The Structure of a 2:1 Host Guest Complex between p-Nitroaniline and 18-Crown-6  
 Abstract    The crown and two nitroaniline molecules are linked by four N-H • • • O interactions leaving the cyclic ether in a strain free conformation of approximate Ü3d symmetry. Partial disorder of one O atom facilitates one more H bond but induces considerable conformational strain in the ligand. 
  Reference    Z. Naturforsch. 36b, 896—897 (1981); received May 6 1981 
  Published    1981 
  Keywords    Neutral Complexes, Crown Ethers, H Bonds, X-ray 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0896_n.pdf 
 Identifier    ZNB-1981-36b-0896_n 
 Volume    36 
58Author    Werner Kruppa, Dieter Bläser, Roland Boese, Günter SchmidRequires cookie*
 Title    Heteronucleare Clustersysteme, XX [1] ^3-Bi8mutio-cyclo-tris(tricarbonyliridium) (3 Ir-Ir), BiIr3(CO)9 Darstellung und Strukturuntersuehung eines neuartigen Iridiumclusters Heteronuclear Cluster Systems, XX [1] iM3-Bismutio-cyclo-tris(tricarbonyliridium)(3Ir-Ir), BiIr3(C0)g - Synthesis and Structural Investigation of a Novel Iridium Cluster  
 Abstract    The synthesis of BiIr3(CO)9 is described. IR and mass spectroscopic data are discussed. The structure of BiIr3(CO)9 was solved by X-ray analysis. The structural data are discussed and compared with those of the related compounds Ir4(CO)i2 and Bi[Co(CO)4]3, respec-tively. 
  Reference    Z. Naturforsch. 37b, 209—213 (1982); eingegangen am 29. September 1981 
  Published    1982 
  Keywords    Iridium Cluster, Bismuth Cluster, Synthesis, X-ray 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0209.pdf 
 Identifier    ZNB-1982-37b-0209 
 Volume    37 
59Author    Werner Winter, AntonThomas Butters, Rieker, Yasuo ButsuganRequires cookie*
 Title    Synthesis and Structure of l,2-Bis(2,4,6-tri-fert-butylphenyl)ethane  
 Abstract    The title compound 9, C38H62, was prepared by dehalogenation of 2,4,6-tri-£er£-butyl-benzyl chloride (7a). It crystallizes in the monoclinic space group C2/c with Z = 4. a = 10.923(7), b = 17.910(3), c = 17.395(3) A and ß = 91.87(3)° (the cell constants refer to 173 K). The structure was solved by direct methods and refined by full-matrix least squares to 7? = 0.073 for all 3853 reflexions (|Fo| > 0). On account of steric repulsions, the central ethane bond, which lies on a twofold crystallographic axis, is stretched to 1.567(4) A. Close packing of the molecules in layers parallel the ac-plane leads to boat-deformations of the benzene rings. Room-temperature data sets of weakly diffracting crystals [a = 10.948(0), b= 17.97(1), c= 17.52(2) and ß = 91.9(1)°] do not give rise to an artificial shortening of the central ethane bond of 9. Evidently, poor data quality or lack of resolution have not to be considered as an explanation for the unusual short ethane bond [1.47(3) A] in the first undamped hexaphenylethane [Stein, Winter, and Rieker (1978)]. Historical Background 
  Reference    Z. Naturforsch. 37b, 855—862 (1982); received March 15 1982 
  Published    1982 
  Keywords    X-ray, Steric Hindrance, Hindered Ethanes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0855.pdf 
 Identifier    ZNB-1982-37b-0855 
 Volume    37 
60Author    Gabriela WeberRequires cookie*
 Title    A 1:1 Host-Guest Complex between ('18-crown-6') and m-Nitroaniline: Mere Stoicheiometry or a Genuine 1:1 Adduct ?  
 Abstract    The stoicheiometrically 1:1 adduct of 1,4,7,10,13,16-hexaoxa-cyclooctadecane with m-nitroaniline, C18H30N2O8, Mr = 402.45, crystallises from toluene in red-orange prisms, (probable) space group Pi, a = 801.8(3), b = 920.4(3), c = 1403.3(4) pm, a = 80.40(4), ß = 79.79(4), y = 85.95(3)°, V = 1.07910 nm 3 , Z = 2, dcaic. = 1.238 Mgm~ 3 . Structure refinement converged at R = 0.060 (Rw = 0.002) for 2915 diffractometer data. 
  Reference    Z. Naturforsch. 37b, 1250—1254 (1982); received March 22 1982 
  Published    1982 
  Keywords    Crown Ether, m-Nitroaniline, H Bridges, X-ray 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1250.pdf 
 Identifier    ZNB-1982-37b-1250 
 Volume    37 
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