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1990 (280)
1Author    HerrnH U ProfRequires cookie*
 Title    Die Kristallstruktur von Ga3Cl7  
 Abstract    G allium (+l)-/i-chloro-hexachlorodigallate(+3). Crystal Structure Trigallium heptachloride, G a3Cl7, has been prepared from G aCl3 and Ga in sealed glass ampoules. G a3Cl7 crystallizes in the space group P«a2, (No. 33) with a = 1181.8(1) pm; b = 889.7(1) pm; c — 1057.5(1) pm; Z = 4. The com pound is isotypic with K G a2Cl7. The G a2Cl7~ anion has nearly C2 sym metry (gauche conform ation) with d (G a —Clbrjdg) = 230.3 pm, d (G a —Clterm) = 214.3 pm and < G a —Cl —G a = 109.0°. The G a + ion is coordinated by ten Cl atoms (4 + 6) with d = 346.2 pm. The coordination of G a + and the conform ation of G a2Cl7" are discussed in detail together with related compounds. 
  Reference    (Z. Naturforsch. 45b, 1 [1990]; eingegangen am 31. Juli 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0001.pdf 
 Identifier    ZNB-1990-45b-0001 
 Volume    45 
2Author    Brigitte Eisenm, Achim Hofm, Ann, Roland ZaglerRequires cookie*
 Title    Na5InTe4 und Na5In2Te6 — Erste Beispiele für Neso-sowie Ditelluro-verbrückte Inotelluroindate Na5InTe4 and N a5In2Te6 — First Examples of Neso-and Ditelluro-Bridged Inotelluroindates  
 Abstract    Juli/28. A ugust 1989 O rthotelluroindate, Inotelluroindate, Crystal Structure Single crystals of the ternary com pounds N a5InT e4 and N a5In2T e6 have been grown from the melt und have been investigated by X-ray single crystal techniques. Na5InT e4: orthorhom bic, space group Pbcn; Z = 8; a = 742.7(4) pm. b — 2015.4(8) pm, c = 1773.3(6) pm; N a5In:T e6: orthorhom bic, space group Cmc2[; Z = 8; a — 902.1(4) pm, b — 1536.1(5) pm , c — 2356.5(6) pm. The crystal structure of N a5InT e4 contains isolated InTe4 tetrahedra (m ean bond length: 278.8 pm). In the crystal structure of N a5In2T e6 InT e4 tetrahedra are connected through common vertices to "Zw eiereinfach"-chains. Two neighbouring chains each are joined further to ribbons through T e —Te bridges betw een every second InT e4 
  Reference    (Z. Naturforsch. 45b, 8—14 [1990]; eingegangen am 14) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0008.pdf 
 Identifier    ZNB-1990-45b-0008 
 Volume    45 
3Author    Requires cookie*
 Title    Pentaalkyl-Derivate des  
 Abstract    2 , 3 -D H i y d r o -l , 3 -d i b o r o l s Pentaalkyl Derivatives o f the 2 ,3 -D ih y d ro -1,3-diborole G . K nörzer und W. Siebert* 
  Reference    (Z. Naturforsch. 45b, 15 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0015.pdf 
 Identifier    ZNB-1990-45b-0015 
 Volume    45 
4Author    Requires cookie*
 Title    Di-cyano-^propyl-arsan als Edukt für den Aufbau mehrkerniger arsanverbrückter Cobalt-Cluster  
 Abstract    D i-cyano-"propyl-arsine as E duct for the F o rm atio n o f M ultinuclear A rsino-B ridged C obalt Clusters H einrich Lang*, Uwe Lay und Laszlo Z solnai 
  Reference    (Z. Naturforsch. 45b, 19 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0019.pdf 
 Identifier    ZNB-1990-45b-0019 
 Volume    45 
5Author    Wolfgang Einholz, W. Alter Gollinger, Wolfgang HauboldRequires cookie*
 Title    Ligandenaustauschreaktionen zwischen Halogenboranen und Alkylsilanen Ligand Exchange Reactions between H aloboranes and Alkylsilanes  
 Abstract    In a ligand exchange reaction betw een B H al, (Hal = Cl, Br) and the tetraalkylsilanes E t4Si, (M e,Si)2C H 2 or Ph2CH SiM e3 the alkylhaloboranes E tB B r2 or M eBH al: and the alkylhalosilanes E t,SiB r, H alM e2S i-C H 2-S iM e 3, (H alM e2Si)2C H 2, and Ph2CHSiM e2Br, respectively, are formed. Similarly, the methyloligosilanes (M e3Si)2 (1) and (M e,Si)2SiMe2 (2) react with BHal, (H al = Cl, Br, I) via m ethyl-halogen-transfer to give H alM e2Si—SiMe, (Hal = Cl, Br, I), (H alM e2Si)2 (Hal = Br, I), H alM e2Si —SiMe2—SiM e,, (M e,Si)2SiM eHal, HalM e2Si —SiMeHal —SiMe,, (H alM e2Si)SiMe2 (Hal = Cl, Br) or (B rM e2Si)2SiMeBr besides M eBHal2 (Hal = Cl, Br. I) and M e2BI, respectively. 
  Reference    (Z. Naturforsch. 45b, 25—30 [1990]; eingegangen am 31. August 1989) 
  Published    1990 
  Keywords    A lkylhaloboranes, Trialkylhalosilanes, Alkylhalodisilanes and -trisilanes, Synthesis, NM R Spectra 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0025.pdf 
 Identifier    ZNB-1990-45b-0025 
 Volume    45 
6Author    K. Laus-Jürgen, Range, C. Hristiane EglmeierRequires cookie*
 Title    Ammonium Hexavanadate, (N H 4)2V60 16: Preparation, Crystal Structure, Infrared Spectra and High-Pressure Reactions  
  Reference    (Z. Naturforsch. 45b, 31 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0031.pdf 
 Identifier    ZNB-1990-45b-0031 
 Volume    45 
7Author    Yuzo NishidaRequires cookie*
 Title    Synthesis and Reactivity of Copper(II) Complexes with New Binucleating Ligands Derived from 16-or 20-Membered N4-Macrocycles  
 Abstract    Binuclear C opper(II) Complexes, Synthesis, Catalytic Function New binucleating ligands, (L 1) N ,N ',N ",N "'-tetrakis(2-benzim idazolylm ethyl)-l,4,9,12-tetra-azacyclohexadecane, and (L2) N .N ',N ",N "'-tetrakis(2-benzim idazolylm ethyi)-l,4,ll,14-tetra-azacycloeicosane were prepared. From the reaction mixture of copper(II) salt and the ligand, new binuclear copper(II) complexes, Cu2(L ') (N 0 3)4 (1), Cu2(L2)(N 0 3)4 (2), Cu2(L_)Br4 (3). and trinuclear complexes, C u3(L')C16 (4), and C u3(L2)Cl6 (5) were obtained. Cyclic voltamm ogram s revealed that the trinuclear complexes 4 and 5 are composed with the binuclear complex (1 or 2) and [CuC14]2~. The interaction between two metal ions in the binuclear complexes are confirmed on the basis of the E SR spectra. These binuclear complexes exhibit higher catalytic activity for the oxidation of TM PD by 0 2 molecule than those of structurally rigid binuclear copper(II) complexes and of flexible binuclear complexes in which two copper(II) coordination sites are linked by a single polyatomic chain. 
  Reference    (Z. Naturforsch. 45b, 39—44 [1990]; received July 17/September 8 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0039.pdf 
 Identifier    ZNB-1990-45b-0039 
 Volume    45 
8Author    Siegfried PohlRequires cookie*
 Title    Thioharnstoff-Derivate als Liganden in  
 Abstract    Eisen-Komplexen: Synthese und Kristallstrukturen von [FeI2L2l, [Fe2I4L3], (L -L) 2+|FeI4-| 2 (L = (M e2N)2CS) und |Fe2I4(C6H l0(N H -C S -N H M e)2)2| mit einer Notiz zu [FeIL3]+|Fe4S4I3L]-T hiourea D erivatives as Ligands in Iro n Complexes: Syntheses and C rystal Structures o f [F eI2L2], [ F e J 4 L3], (L -L) 2 +[FeI4-] 2 (L = (M e2N)2CS) an d [Fe2I4(C 6H 10(N H -C S -N H M e) 2)2] and a N o te on [F eIL 3]+[F e4S4I3L]~ U lrich Bierbach, W olfgang Saak, D etlev H aase u nd [FeI2L2] (1) and [Fe2I4L3] (2) are obtained from the reaction o f F e l2 and 
  Reference    (Z. Naturforsch. 45b, 45 [1990]; eingegangen am 26 Juli / 18. September 1989) 
  Published    1990 
  Keywords    Thiourea Complexes, Iron C om pounds, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0045.pdf 
 Identifier    ZNB-1990-45b-0045 
 Volume    45 
9Author    O. Esk, B. M. Ainz, O. LteRequires cookie*
 Title    Reaktionen von N-Lithio-N,N'-di(f-butyI)-S  
 Abstract    phenylsuIfinsäureimidamid mit Chloriden der Elemente der 4. Gruppe des Periodensystems Struktur des 0[T iC l2N2(But)2SPh]2 R eaction s o f N -L ith io -N ,N '-d i(/-b u ty l)-S -p h en y lsu lfin ic A cid Im idam ide w ith C h lorides o f the E lem en ts o f G rou p 4 o f the P eriodic System S tructure o f 0 [T iC l2N 2 (B u ')2S P h] 2 Metal Complexes, X-Ray, Four-membered Rings N-Lithio-N,N'-di(f-butyl)-S-phenylsulfinic acid imidamide (1) reacts with TiCl4, SiCl4, GeCl4, SnCl4 and Ph2SnCl2 with monosubstitution at the metal center to yield compounds 2 —6. TiCl3N2(Bu')2SPh (2) slowly hydrolyzes to form 0[T iC l2N2(Bu')2SPh]2 (7). The molecular struc­ ture of 7 was investigated by an X-ray structure analysis. 
  Reference    (Z. Naturforsch. 45b, 53—58 [1990]; eingegangen am 16. Juni 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0053.pdf 
 Identifier    ZNB-1990-45b-0053 
 Volume    45 
10Author    Hans Bock, Primož Lorenčak, CurtW. EntrupRequires cookie*
 Title    Gasphasen-Reaktionen, 71 [1-3] PE-Spektren und Pyrolysen stickstoffreicher Kohlenstoff-Verbindungen: CN4, C2N4, C2H2N4, C4H6N4 und C5H4N4 Gasphase Reactions, 72 [1 — 3] PE Spectra and Pyrolyses of Nitrogen-Rich Carbon Compounds: CN4, C2N4, C2H 2N4, C4H 6N 4 and C5H 4N 4  
 Abstract    Cyanogen Azide, Azodicarbonitrile, Azidoacetonitrile, Trimethylenetetrazole and Tetrazolo[l,5-a]pyridine, Gasphase Pyrolyses 
  Reference    (Z. Naturforsch. 45b, 59—71 [1990]; eingegangen am 26. Mai 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0059.pdf 
 Identifier    ZNB-1990-45b-0059 
 Volume    45 
11Author    R. Oesky, D.Etlev Hesse, M. Athias, Rietzel, M. Athias, N. Oltem EyerRequires cookie*
 Title    Reaktionen von Re20 7 mit Iminophosphoranen - Kristallstruktur von ( 0 3ReN = PPh2 )2 C2H 4  
 Abstract    R eactions o f R e2O v w ith Im in o p h o sp h o ran es -C rystal Structure o f (0 3R eN = PPh2)2C 2 H 4 H erbert W. Rheniumoxide, N -Trim ethylsilylim inophosphoranes, M etal-Nitrogen Bonds Re-,07 reacts with (M e3SiN = PPh2)-,CH2, (M e3SiN = PPh-,)-,C2H4 and M e3SiN = PPh3 to give 
  Reference    (Z. Naturforsch. 45b, 72—7 [1990]; eingegangen am 14. August 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0072.pdf 
 Identifier    ZNB-1990-45b-0072 
 Volume    45 
12Author    Z. NaturforschRequires cookie*
 Title    |2+31-Cycloadditionsreaktionen von  
 Abstract    Nitrilen mit Bis(triphenylphosphoranyliden)iminiumazid [2 + 3] C yclo-A ddition R eactions o f N itriles w ith B is(triphenylphosphoranyliden)im inium Azide Jörg Sunderm eyer, H erbert W. Roesky* und M athias N oltem eyer Cyanogen and the two isomers o f S (C N)4 ((2) and (3)) react with [Ph3PN PPh3]+N 3_ 
  Reference    (Z. Naturforsch. 45b, 77—7 [1990]; eingegangen am 18. September 1989) 
  Published    1990 
  Keywords    X-Ray Structure, Cyclo-Addition Reactions, Tetrazole Derivatives 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0077.pdf 
 Identifier    ZNB-1990-45b-0077 
 Volume    45 
13Author    E. M. Afsah, M. Ham, Ouda, H. Z. Oorob, M. M. Khalifa, M. T. ZimaityRequires cookie*
 Title    Mannich Reaction with 1 ,3 -I n d a n d io n e Phenylhydrazones  
 Abstract    Mannich Bases of Phenylhydrazones, Indeno[2,l-/]-l ,2,4-triazepinone. Indeno[l,2-/]-l,2,4,5-tetrazepinone, Mannich Reaction 
  Reference    (Z. Naturforsch. 45b, 80—82 [1990]; received March 13/May 25 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0080.pdf 
 Identifier    ZNB-1990-45b-0080 
 Volume    45 
14Author    AliciaM. Seldes, M. Onica, E. D. Eluca3, E. Duardo, G. Grosa, Juana Rovirosab, A. Urelio, San-M Artinb, JoseD. Arias0Requires cookie*
 Title    Steroids from Aquatic Organisms, XIX. New Sterols from the Antarctic Sponge Artemisina apollinis  
 Abstract    The steroidal composition of the sponge Artemisina apollinis from the Antarctic Ocean was studied by GC-MS and 'H NMR. The sponge contains twenty-eight C 25—C30 derivatives having four different types of nucleus: 3/3-hydroxy-5aH-, 3-keto-5aH-derivatives, 3/3-hydroxy-zl5-and 3/?-hydroxy-zl7-derivatives. Compounds with the first two nucleus are the most abundant, with similar side chain patterns and identical GC profiles. The 3-keto-5aH-derivatives constitute a new group of natural products. 
  Reference    (Z. Naturforsch. 45b, 83—86 [1990]; received August 14 1989) 
  Published    1990 
  Keywords    Artemisina apollinis, Antarctic Sponge, Steroidal Components 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0083.pdf 
 Identifier    ZNB-1990-45b-0083 
 Volume    45 
15Author    N. Aheed, A., M. A. Tar, HaleemRequires cookie*
 Title    Studies on the Structure of /?-Chitin  
 Abstract    /?-Chitin Parallel chain system for the structure o f /?-chitin is studied from a stereochemical point o f view and the structure has been refined by least squares procedures. As a first step correct atomic positions representing standard configuration o f glucopyranose ring, peptide unit and CH-.OH group have been redetermined in the unit cell. The unit cell is m onoclinic with dimen­ sions a = 4.85 Ä, b = 10.38 A (fibre axis), c = 9.26 A and ß = 97.5°. The space group is P2,. The refinement has been done using five geometrical parameters, temperatur factor and the scaling factor. The R and 0-valu e are found to be 0.235 and 37.61, respectively. The refined structure is found to be free from all short contacts. The refined chains form interhydrogen bond o f the type N -H • • • 07= C 7 and intrahydrogen bond o f the type 0 , -H • • • 03. The present calculations suggest that an intra-sheet 0 6 -H -07 hydrogen bond cannot be formed in the present structure. This behaviour will certainly explain the different properties o f /?-chitin hav­ ing less number o f hydrogen bonds as compared to a-chitin. 
  Reference    (Z. Naturforsch. 45b, 87 [1990]; received April 1 2 /August 22/O ctob er 4 1989) 
  Published    1990 
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 Identifier    ZNB-1990-45b-0087 
 Volume    45 
16Author    JuanB. Rodriguez, EduardoG. GrosRequires cookie*
 Title    A Convenient Method for the Preparation of (±)Juvenile Hormone III  
 Abstract    Juvenile Hormone III, Synthesis Following a different approach methyl (2 E ,6 E)-farnesoate (4) was prepared in three steps from /AWis-geranylacetone (1). Compound 4 was regioselectively epoxidized to (±)juvenile hormone III. 
  Reference    (Z. Naturforsch. 45b, 93—95 [1990]; received July 3 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0093.pdf 
 Identifier    ZNB-1990-45b-0093 
 Volume    45 
17Author    AngelM. Stokaa, Cristina Rivas3, ElsaL. Segura3, JuanB. Rodriguezb, EduardoG G RosbRequires cookie*
 Title    Biological Activity of Synthetic Juvenile Hormone Analogues (JHA) for Trypanosoma cruzi  
 Abstract    Juvenile Hormone Analogues. Trypanosoma cruzi, Growth Inhibition Several juvenile hormone analogues, among them Fenoxycarb and authentic JH-III, were tested as growth inhibitors for Trypanosoma cruzi cultivated in vitro. The same compounds were also assayed for inhibition of tritium labelled-thymidine incorporation into T. cruzi cells. The results indicated that those analogues containing sulfur showed important activity against the development of the cells. Interesting inhibition values were also found for the remaining fenoxy-fenoxy derivatives assayed. 
  Reference    (Z. Naturforsch. 45b, 96—9 [1990]; received July 3 1989) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0096.pdf 
 Identifier    ZNB-1990-45b-0096 
 Volume    45 
18Author    Karl Hensen, Michael DräbingRequires cookie*
 Title    D ie Phasendiagram m e der System e Dim ethyldichlorsilan mit 2.4-Lutidin und 2.6-Lutidin Phase Diagram s o f Dimethyldichlorosilane with 2.4-Lutidine and 2.6-Lutidine  
  Reference    (Z. Naturforsch. 45b, 99 [1990]) 
  Published    1990 
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 Identifier    ZNB-1990-45b-0099_n 
 Volume    45 
19Author    Dieter Fenske, Helmut GoesmannRequires cookie*
 Title    Synthese und Kristallstruktur von [ 15-K rone-5-C uC l(C H 3C N )l+CuCl3" Synthesis and Crystal Structure of [15-Crown-5-CuCl(CH3CN)]+CuCl3  
  Reference    (Z. Naturforsch. 45b, 101 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0101_n.pdf 
 Identifier    ZNB-1990-45b-0101_n 
 Volume    45 
20Author    Karin Hippier, Stephan Sitta, Petra Vogt, Horst SabrowskyRequires cookie*
 Title    Kristallstruktur von Na4OBr2 Crystal Structure of N a4OBr2  
 Abstract    R u h r-U n iv e rs itä t B o c h u m , L e h rs tu h l fü r A n o rg a n isc h e C h e m ie I, F e stk ö rp e rc h e m ie , U n iv e rs itä ts s tra ß e 150, D -4630 B o ch u m 1 
  Reference    (Z. Naturforsch. 45b, 105 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0105.pdf 
 Identifier    ZNB-1990-45b-0105 
 Volume    45 
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