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1991[X]
21Author    HansM. Öhrlea, K. Arin Bluhme-Hensena, BirgitM. Iddelhauveb, DietrichM. Ootzb, H. Artm, W. Underlich15Requires cookie*
 Title    Cyclisierung von Amidoximen mit Oxybis(diphenylboran) Cyclization of Amidoximes with Oxybis(diphenylborane)  
  Reference    Z. Naturforsch. 46b, 1219—1222 (1991); eingegangen am 2. April 1991 
  Published    1991 
  Keywords    Am idoxim es, 2, 3-D ihydro-l, 3, 5, 2-oxadiazaborol Derivatives, Crystal Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1219.pdf 
 Identifier    ZNB-1991-46b-1219 
 Volume    46 
22Author    Thom As Kellersohn, Konrad Beckenkamp, HeinzDieter LutzRequires cookie*
 Title    Extrem asymmetrisch gebundene Wassermoleküle - Kristallstrukturen von Sr(OH)Cl * 4 H zO, Sr(OH)Br * 4 H 20 und Ba(O H )I * 4 H 20 Extremely Asymmetrically Bound W ater Molecules - Crystal Structures of Sr(OH)Cl * 4 H 70 , Sr(OH)Br * 4 H 20 , and Ba(OH)I -4 H 20  
 Abstract    The crystal structures o f isotypic Sr(OH)Cl 4 H 20 , Sr(OH)Br ■ 4 H zO, and Ba(OH)I ■ 4 H 20 are repojted. The title compounds crystallize in a hitherto unknown structure type, space group P i, Z = 2. The final R values obtained are 0.0261, 0.069, and 0.062, respectively. The coordination o f the metal ions is monocapped square antiprismatic with 7 H2Ö, 1 OH~ and 1 halide ion. The halide ions separate metal/water/hydroxide layers. Each o f the four crystallo-graphically different water molecules serves as donor for one very strong and one very weak hydrogen bond and, hence, is extremely asymmetrically bound. Owing to this strong distor­ tion, the largest one known so far, the OH stretching vibrations o f the H 20 m olecules are intramolecularly decoupled as shown from vibrational spectra. The enthalpies o f dehydration obtained from differential scanning calorimetry are reported. 
  Reference    Z. Naturforsch. 46b, 1279—1286 (1991); eingegangen am 22. April 1991 
  Published    1991 
  Keywords    Strontium Hydroxide Halides, Barium Hydroxide Halides, Crystal Structure, Hydrates, Asymmetrically Bound H 20 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1279.pdf 
 Identifier    ZNB-1991-46b-1279 
 Volume    46 
23Author    Alfred Zinn, Henning Von Arnim, Werner Massa, Michael Schäfer, Jürgen Pebler, K. Urt DehnickeRequires cookie*
 Title    [P h -C (  
 Abstract    N S iM e3)2]2FeO ; ein Amidinatokomplex von Eisen(III) mit verzerrt trigonal-bipyramidaler Struktur [P h -C (N S iM e3)2]2FeCl; an Amidinato Complex o flro n (III) with a Distorted Trigonal-Bipyramidal Structure The am idinato complex [P h -C (N S iM e3)2]2FeCl has been prepared by the reaction o f FeOCl with the amidine P h -C (N S iM e3)[N(SiM e3)2] in acetonitrile/THF in the form o f dark red m ois­ ture sensitive single crystals. The complex was characterized by IR spectroscopy, by its 57Fe-M össbauer spectra, as well as by an X-ray structure determination. Space group P i, Z = 2, 3180 observed unique reflections, R = 0.068. Lattice dimensions at -8 0 C: a = 1210.4(2), b = 1272.7(3), c = 1316.0(3) pm; a = 67.81(3)°, ß = 76.14(3)°, y = 67.19(3)°. The com plex has a molecular structure in which the iron atom is surrounded in a distorted trigonal-bipyramidal fashion with the chlorine ligand and two nitrogen atoms o f different amidinato chelates in equatorial positions. The remaining nitrogen atom s occupy the apical positions. 
  Reference    Z. Naturforsch. 46b, 1300 (1991); eingegangen am 28. Februar 1991 
  Published    1991 
  Keywords    Am idinato Complex o f Iron, Synthesis, IR Spectra, 57Fe M össbauer Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1300.pdf 
 Identifier    ZNB-1991-46b-1300 
 Volume    46 
24Author    Georg Borgs, HelmUt Keck, Wilhelm Kuchen, Dietrich Mootz, ReneW. Iskemann, H. Artm, Ut Wunderlich, Prof Dr, Hans-GeorgRequires cookie*
 Title    Cubane Type M olybdenum -Halogen-Sulfur Clusterdithiophosphinates  
 Abstract    Diamagnetic clusters [M o3X -//-(S2)3-//3(S)(R 2PS2)3] 2 -4 (2: X = Cl; 3: X = Br; 4: X = I; 2 -4 : a: R = Et; b: R = Pr; c: R = Bu) are conveniently obtained by reaction o f 
  Reference    Z. Naturforsch. 46b, 1525—1531 (1991); eingegangen am 18. April 1991 
  Published    1991 
  Keywords    M olybdenum -Halogen-Sulfur Clusters, Cubane Type Cluster Core, Dithiophosphinato Ligands, Crystal Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1525.pdf 
 Identifier    ZNB-1991-46b-1525 
 Volume    46 
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