Go toArchive
Browse byFacets
Bookbag ( 0 )
'Synthesis' in keywords
Results  329 Items
Sorted by   
Publication Year
2000 (2)
1999 (5)
1998 (12)
1997 (17)
1996 (22)
1995 (9)
1994 (21)
1993 (17)
1992 (20)
1991 (16)
81Author    Ulrich Bayer, HansAlbert BruneRequires cookie*
 Title    Untersuchungen über Substituenten-Einflüsse auf die reduktive Eliminierung des Biphenyl-Systems aus as-Bis(aryl)bis(triphenylphosphan)platin(II)-Verbindungen Influence of Substituents on the Reductive Elimination of the Biphenyl-System from cis-Bis(aryl)bis(triphenylphosphane)platinum(II) Compounds  
 Abstract    Compounds cis-[Pt(PPh3)2(3-X-C6H4)2] [X = F, Cl, CF3, CH30, (CH3)2N] and cis-[Pt(PPh3)2(3-X-C6H4)(Y-C6H4)] [X = F/Y = H, 4-F, 4-CF3, 4-CH30; X = Cl/Y = 4-F; X = CF3/Y = 4-F; X = CH3Ö/Y = 4-F] have been synthesized and studied thermally with respect to the reductive elimination of disubstituted biphenyls. Activation parameters A H+ and A S4= are reported and discussed. 
  Reference    Z. Naturforsch. 38b, 621—631 (1983); eingegangen am 17. Januar 1983 
  Published    1983 
  Keywords    Platinum-organic Compounds, Syntheses, Reductive Elimination, Activation Parameters 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0621.pdf 
 Identifier    ZNB-1983-38b-0621 
 Volume    38 
82Author    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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0733.pdf 
 Identifier    ZNB-1983-38b-0733 
 Volume    38 
83Author    George Sosnovsky, Jan LukszoRequires cookie*
 Title    In the Search for New Anticancer Drugs, III+ Phosphorylated Diaziridine Derivatives  
 Abstract    Several N-diethoxyphosphoryl derivatives 7 of various diaziridines, and compounds 12, 15a, lob, 18 and 20, structurally related to TEPA (la) and spin labeled Thio-TEPA (lc) were synthesized. 0 Me 0 N-P(0Et) 2 HC=NN-p(<]) o / NR ' • 11 f / 1 ? R-O-P-f N —C—R X R N—R CL N "2 Me Me 7: R 1 . R 3 = alkyl 12 15a: R 1 = R 2 =R 3 =Me R 2 =H, alkyl 15b: R' = H,R 2 R 3 =-|CH2|5-N-0 Me Me In three cases, attempts to synthesize phosphorylated diaziridine derivatives resulted in rearrangements to give the corresponding phosphorylated hydrazone derivatives 11 h, Hi and 12. Me 0 CH = NN — P(0Et)j 11 h: x= H 11 i : x = ci 13 C NMR spectroscopy was shown to be a valuable tool in distinguishing between the structures of diaziridine and hydrazone derivatives. The in vivo testing of five representa-tive compounds (7e, 12, 15a, 16 and 20) against murine lymphocytic leukemia P 388 showed a lack of antitumor activity of compounds 7e, 15 a, 16 and 20, and an activity of compound 12 as evidenced by a T/C value of 194 and a % ILS of 94, at a dose of 32 mg/kg. 
  Reference    Z. Naturforsch. 38b, 884—894 (1983); received August 30/December 24 1982 
  Published    1983 
  Keywords    Phosphorylated Diaziridines, Synthesis, Anticancer Drugs, Leukemia P 388 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0884.pdf 
 Identifier    ZNB-1983-38b-0884 
 Volume    38 
84Author    Ernst-Dieter FranzRequires cookie*
 Title    Fluorapatit Ca5F(P04)3 - Ein Modell zur Synthese der Zahnhartsubstanz im System CaF2-Ca3(P04)2 Fluorapatite -A Model for the Synthesis of Dental Enamel in the System CaF2-Ca3(P04)2  
 Abstract    Fluorapatite Ca5F(PC>4)3 can be synthesized by melting of CaF2 together with Ca3(P04)2 at 1660 °C in the molar ratio CaF2 • 3 Ca3(PÜ4)2. Fluorapatite is more resistant against acids than hydroxylapatite Cas0H(P04)3 and can activate the remineralisation in dental enamel. The apatite of dental enamel is more resistant against mechanical stress than synthetic apatite due to a different microstructure of the crystal grains. 
  Reference    Z. Naturforsch. 38b, 1037—1040 (1983); eingegangen am 25. Mai 1983 
  Published    1983 
  Keywords    Fluorapatite, Hydroxylapatite, Dental Enamel, Synthesis, Phase Equilibria 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1037.pdf 
 Identifier    ZNB-1983-38b-1037 
 Volume    38 
85Author    George Sosnovsky, BuddhaD. PaulRequires cookie*
 Title    In the Search for New Anticancer Drugs, VI+ Structural Modifications of Cyclophosphamide  
 Abstract    Taking into consideration the known mechanism of the drug action of cyclophosphamide (1), several analogs and related compounds o, 6, 7, 9, 11, 12 and 27 were synthesized, and tested against lymphocytic leukemia P 388 in mice. CH °N P(0)NM2 (P(0)NM2 F /P(0)NM2 F ,P(0)NM2 I H3cV N 'H h>\ H CH 3 3 CH3 3 CH3 M=CH2CH2CI 5 6 7 (>™2 HO<3-P,O,NM2 / \ R HiC ' w o ' P-NCHUCHUCL 9 11, R = CI 12 27, r^nhch2CH2CH3 Moderate to high activity was found with 5 (T/C X 100 = 243 at a dose of 300 mg/kg), 7 (T/C x 100 = 173 at a dose of 10 mg/kg), 9 (T/C X 100 = 248 at a dose of 100 mg/kg) and 11 (T/C X 100 = 155 at a dose of 55 mg/kg). None of these compounds was found to be more active than 1 (T/C X 100 = 339 at a dose of 65 mg/kg). Although the essential position C4 for the enzymatic activation is completely blocked in 5, the compound posses-ses a high degree of activity. This result justifies a reevaluation of the proposed mechanism of drug action of 1 and its analogs. 
  Reference    Z. Naturforsch. 38b, 1146—1155 (1983); received August 30/December 24 1982 
  Published    1983 
  Keywords    Cyclophosphamide, Drugs, Anticancer, Synthesis, Leukemia P 388 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1146.pdf 
 Identifier    ZNB-1983-38b-1146 
 Volume    38 
86Author    Angelika Sebald, Bernd WrackmeyerRequires cookie*
 Title    Bequeme Synthese von eis-1,2- Bis(diphenylphosphino)ethanplatin(II)- acetyliden Convenient Synthesis of m-1,2-Bis(diphen3dphosphino)- ethane-platinum (II) -acetylides  
 Abstract    The title compounds (1) are obtained in quantitative yield from the reaction between dppePtCl2 (2) and alkynyl stannanes (CH3)3Sn-C=C-R (8) or (CH3)2Sn(C=C-R)2 (4) in boiling tetrahydrofurane. The complexes 1 have been characterised by multinuclear NMR PC, 31 P, 195 Pt). 
  Reference    Z. Naturforsch. 38b, 1156—1158 (1983); eingegangen am 3. Juni 1983 
  Published    1983 
  Keywords    Platinum(II)-acetylides, Synthesis, NMR Spectra 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1156_n.pdf 
 Identifier    ZNB-1983-38b-1156_n 
 Volume    38 
87Author    Klaus Ackermann, Peter Hofmann, FrankH. Köhler, Hans Kratzer, Herbert Krist, Karl Öfele, HelmutR. SchmidtRequires cookie*
 Title    Synthese, Molekül-und Elektronenstruktur eines Radikal-Kationkomplexes [Cr(CO)4(Carben)2] + Synthesis, Molecular and Electronic Structure of a Radical Cationic Complex [Cr(CO)4(Carbene)2] +  
 Abstract    A new one-step synthesis for bis-carbene complexes cis-M(CO)4L2 (M = Cr, Mo, W) containing cyclic carbene ligands L has been developed. These compounds can be oxidized by ferrocenium salts to paramagnetic cation complexes [M(CO)4L2] + which, for M = Cr, are isolable in the form of their PFÖ salts. The chromium compounds with L= 1,3-dimethyl-4-imidazolin-2-ylidene permit for the first time a structural and spectroscopic comparison of a diamagnetic carbene complex with the corresponding paramagnetic cation; the experimental facts are interpreted by molecular orbital calculations. 
  Reference    Z. Naturforsch. 38b, 1313—1324 (1983); eingegangen am 14. Juli 1983 
  Published    1983 
  Keywords    Cationic Dicarbene Complexes, Synthesis, Structure and Bonding 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1313.pdf 
 Identifier    ZNB-1983-38b-1313 
 Volume    38 
88Author    Hans Hartl, FarbodM. Ahdjour-, H Assan-A BadiRequires cookie*
 Title    Synthese und Strukturuntersuchungen von Iodocupraten(I)  
 Abstract    III. Iodocuprate(I) mit isolierten Ketten oc[Cu2l3 ]_ bzw. i[C u 3l 4 ]_ [1] Syntheses and Structure Analyses of Iodocuprates(I), III. Iodocuprates(I) with Isolated Chains [CU2I3]"" or 4 [C u 3I4]~ N-Methylpyridinium-triiododicuprate(I), C6H8NCu2I3, methyltriphenylphosphonium-tetra-iodotricuprate(I), (C6H5)3CH3PCu3I4 and tetrapropylammonium-tetraiodotricuprate(I), (C3H7)4NCu3I4 were obtained by reacting Cu with I2 and C6H8NI, (C6H5)3CH3PI or (C3H7)4NI in acetone. The crystal structures of these compounds are built up by the cations and isolated chains of edge or face sharing Cul4-tetrahedra: [C6H8N ]+ « [(C u I^ I ^)^ -, [(C6H5)3CH3P] + oc[(CuI1/2I2/3I1/4)2 (CuI2/3I2/4)]_ and [(C3H7)4N ]+ i[(C u I3/3I1/2)2 (CuI3/3)]~. There are very short C u -C u distances of 246.1(5) and 250.3(5) pm in (C3H7)4NCu3I4 produced by face sharing of Cul4-tetrahedra. 
  Reference    Z. Naturforsch. 39b, 149 (1984); eingegangen am 29. September 1983 
  Published    1984 
  Keywords    Iodocuprates(I), Synthesis, Crystal Structures, Tetrahedra Chains 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0149.pdf 
 Identifier    ZNB-1984-39b-0149 
 Volume    39 
89Author    Rhenium, BoronR. Obert, D. Antona, E.Berhard Schweda, Joachim SträhleRequires cookie*
 Title    Synthese und Kristallstruktur von Re(NBCl3)Cl2[P(CH3)2C6H5]3, ein Komplex mit einer Nitridobrücke zwischen Rhenium und Bor Synthesis and Crystal Structure of Re(N BCl3)Cl2[P(CH3)2C6H 5]3, a Complex with a N itrido Bridge between  
 Abstract    R eN C l2(P M e2Ph)3 reacts as a Lewis base and with BC13 forms a nitrido bridge betw een Re and B. The resulting com plex R e(N B C l3)Cl2(PM e2Ph)3 crystallizes orthorhom bic in the space group Pn2! a with Z = 4. In the com plex each Re atom has six nearest neighbours in an almost octahedral arrangement with the NBC13 group being trans to one o f the Cl ligands. The difference betw een the two Re —Cl bond lengths (239,4 and 243,9 pm) indicates a weak trans effect o f NBC13. The linear bridge R e = N — B has bonding distances o f R e —N = 172,8 and N -B = 153 pm. B onding o f BC13 by the nitrido ligand causes a small 
  Reference    Z. Naturforsch. 39b, 733 (1984); eingegangen am 15. Februar 1983 
  Published    1984 
  Keywords    Nitrido Bridge, Synthesis, Crystal Structure, Rhenium, Boron 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0733.pdf 
 Identifier    ZNB-1984-39b-0733 
 Volume    39 
90Author    M. Arkus Wieber, Isa Fetzer-KremlingRequires cookie*
 Title    Darstellung von einigen Phenyldicarboxylatostibanen Syntheses of Some Phenyldicarboxylatostibanes  
 Abstract    Som e phenyldicarboxylatostibanes of the general formula C6H 5S b (O C -R) ; were synthesized O by simple m etathesis reactions from phenyldiethoxystibane and carboxylic acids in the ratio 1:2. By reaction o f 1,2-dicarboxylic acids with phenyldiethoxystibane in the ratio 1:1 phenyldicarboxyl­ atostibanes are also obtained. Som e properties and the 'H NM R spectra o f these com pounds are described, IR data are reported and discussed. 
  Reference    Z. Naturforsch. 39b, 754 (1984); eingegangen am 22. D ezem ber 1983 
  Published    1984 
  Keywords    Phenyldicarboxylatostibanes, Cyclic Derivatives, Synthesis, Properties, Spectra 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0754.pdf 
 Identifier    ZNB-1984-39b-0754 
 Volume    39 
91Author    CorneliusG. Kreiter, Michael Kotzian, Ulrich Schubert, Robert Bau, MichaelA. BruckRequires cookie*
 Title    Gehinderte Ligandbewegungen in Übergangsmetallkomplexen, X X II I  
 Abstract    [1] Synthese und dynamisches Verhalten von Dicarbonyl(?7-dien)-bis(trimethyl-phosphan)chrom(O) und Dicarbonyl(iy-dien)-bis(trimethylphosphit)chrom(0) Hindered Ligand Motions in Transition Metal Complexes, X X III [1] Syntheses and Dynamic Behaviour of Dicarbonyl(?7-diene)-bis(trimethylphosphane)-chromium(O) and Dicarbonvl(/;-diene)-bis(trimethylphosphite)chromium(0) C r(C O)2[P(CH3)3]2(/7-diene) (9—14) and C r(C O)2[P(OCH3)3]2(?7-diene) complexes (15—20) were prepared photochemically in high yields from Cr(CO)4[P(CH3)3]2 (1) or C r(C O)4[P(OCH3)3]2 (2), respectively, with the dienes 1,3-butadiene (3), rrans-l,3-pentadiene (4), 2-methyl-l,3-butadiene (5), trans,trans-2,4-hexadiene (6), 2-methyl-l,3-pentadiene (7), and 2-ethyl-l,3-butadiene (8). The stereochemistry of 9—20 was determined by IR and N M R spectroscopy. In the case of dicarbonyl-^-r/ww-l ,3-pentadiene-bis(trimethylphosphane)chromium(0) (10) and the cor­ responding trans,trans-2,4-hexadiene complex 12 the X-ray crystal and molecular structure ana­ lyses confirm the spectroscopic conclusions. The distorted octahedral complexes are obtained exclusively as af-isomers. They show a hindered, degenerate isomerization with an intramolecular mutual exchange of the donor ligands. Trigonal prismatic transition states and distorted octahe­ dral intermediates are appropriate models for the explanation of the degenerate isomerization. The activation barriers for the ligand movement were determined by dynamic 3IP-NMR spectro­ 
  Reference    Z. Naturforsch. 39b, 1553—1564 (1984); eingegangen am 14. Juni 1984 
  Published    1984 
  Keywords    77-Diene Complexes, Syntheses, Stereochemistry, Dynamics 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-1553.pdf 
 Identifier    ZNB-1984-39b-1553 
 Volume    39 
92Author    Klaus Blechschmitt, Ernst Guggolz, ManfredL. ZieglerRequires cookie*
 Title    Reaktiviät von Metall—Metall-Mehrfachbindungen, II [1] Nukleophile Addition von Methylensulfiden an [CpMo(CO)  
 Abstract    2 ]2 unter Bildung von Cp(CO) 2 Mo(|*-S(CH 2)")Mo(CO) 2 Cp-Spezies; Röntgenstrukturanalyse von Cp(CO) 2 Mo(i n-S(CH 2) 6)Mo(CO) 2 Cp Reactivity of Metal-Metal Multiple Bonds, II [1] Nucleophilic Addition of Methylenesulfides to [CpMo(CO) 2 ]2 with Formation of Cp(CO) 2 Mo(M-S(CH 2)") Mo(CO) 2 Cp Spezies; X-Ray Structure Analysis of Cp(CO) 2 Mo(w-S(CH 2) 6)Mo(CO) 2 Cp The triply Mo-Mo bonded molecule [Cp(CO) 2 Mo] 2 was reacted with the cyclic sulfides S(CH 2)" (n = 4-6). The species Cp(CO) 2 Mo(w-S(CH 2)")Mo(CO) 2 Cp were isolated and charac-terized by their analytical and spectroscopic data. X-Ray structure analysis of the compound Cp(CO) 2 Mo(w-S(CH 2) 6)Mo(CO) 2 Cp proved the cyclic sulfide to act as a bridging ligand. 
  Reference    (Z. Naturforsch. 40b, 85—89 [1985]; eingegangen am 2. August/6. November 1984) 
  Published    1985 
  Keywords    Synthesis, Metal-Metal Multiple Bonds, X-Ray 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0085.pdf 
 Identifier    ZNB-1985-40b-0085 
 Volume    40 
93Author    Siegfried Pohl, Wolfgang Saak, Bernt KrebsRequires cookie*
 Title    Tetrahalogenotellurate(II): Synthese und Kristallstrukturen von Verbindungen mit den Ionen TeX 4 2- (X = CI, Br, I) Tetrahalotellurates(II): Syntheses and Crystal Structures of Compounds with TeX 4 2 ~ Ions (X = CI, Br, I)  
 Abstract    The compounds [(C 6 H 5) 4 As] 2 TeCl 4 (1), [(C 2 H 5) 4 N] 2 TeBr 4 • CH 3 CN (2), and [(C 2 H 5) 4 N] 2 TeI 4 (3) were prepared by the reaction of Te, X 2 , and excess (QH^NX (X = Br, I) in acetonitrile solution or by heating of [(C 6 H 5) 4 As] 2 TeCl 6 , Te, and (C 6 H 5) 4 ASC1 for several hours in the same solvent. The structures of 1—3 were determined from single crystal X-ray data. 1 crystallizes in the monoclinic space group P2 x ln with a = 1061.8(2), b = 1614.2(3), c = 1341.7(3) pm, ß = 94.21° and Z = 2; 2: tetragonal, P4/mmm, a = 1039.7(2), c = 690.5(1), Z = 1; 3: tetragonal, 14/mmm, a = 1061.7(2), c = 1342.8(4), Z = 2. In 1-3 Te(II) exhibits a square planar coordination. The Te —CI, Te —Br, and Te—I bond lengths were found to be 260.7 (mean), 275.3, and 298.5 pm, respectively. 
  Reference    Z. Naturforsch. 40b, 251—257 (1985); eingegangen am 22. Oktober 1984 
  Published    1985 
  Keywords    Tetrahalotellurates(II), Synthesis, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0251.pdf 
 Identifier    ZNB-1985-40b-0251 
 Volume    40 
94Author    Udo Demant, Elke Conradi, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Formamidinhim-Hexachloroferrat(III) Synthese und Kristallstruktur Formamidinium-Hexachloroferrate(III) Synthesis and Crystal Structure  
 Abstract    [HC(NH 2) 2 ] 3 FeCl 6 was obtained together with other products from the reaction of S 4 N 4 with HCl in H 2 CC1 2 in the presence of FeCl 3 . Its crystal structure was determined from X-ray diffraction data (473 in-dependent observed reflexions, R = 0.047). Lattice constants: a = 961.6, c — 876.4 pm; tetragonal, space group P4 2 /m, Z = 2. Of the two crystallo-graphically independent formamidinium ions HC(NH 2) 2 ®, one exhibits positional disorder; the other one has C—N bond lengths of 128 pm. The FeCl 6 30 ions have symmetry C 2h , but the deviation from O h is small. 
  Reference    Z. Naturforsch. 40b, 443—445 (1985); eingegangen am 6. November 1984 
  Published    1985 
  Keywords    Formamidinium-Hexachloroferrate(III), Synthesis, IR Spectra, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0443_n.pdf 
 Identifier    ZNB-1985-40b-0443_n 
 Volume    40 
95Author    Ulrich Schwanitz-Schüller, Arndt SimonRequires cookie*
 Title    Synthese und Kristallstruktur von Gd 2 NCl 3 Synthesis and Crystal Structure of Gd 2 NCl 3  
 Abstract    The new compound Gd 2 NCl 3 is formed from GdCl 3 with Gd and N 2 as well as from GdCl 3 with GdN (at 1020 K). The crystal structure contains NGd 4 tetrahedra, which are linked via opposite edges to form infinite chains (Orthorhombic, Pbcn; a = 1301.7(1), b = 673.10(6), c = 614.03(7) pm; R = 0.031 for 578 independent reflections). The formal analogy with structures containing condensed clusters, e.g. Gd 2 Cl 3 , is discussed. 
  Reference    Z. Naturforsch. 40b, 705—709 (1985); eingegangen am 31. Oktober 1984 
  Published    1985 
  Keywords    Rare Earth Nitride Chloride, Synthesis, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0705.pdf 
 Identifier    ZNB-1985-40b-0705 
 Volume    40 
96Author    Hans Hartl, Irene Brüdgam, F. Mahdjour-Hassan-AbadiRequires cookie*
 Title    Synthese und Strukturuntersuchungen von Iodocupraten(I) VI. Iodocuprate(I) mit zweikernigen Anionen [CU2I4]2-und [Cu2I6]4-[1] Syntheses and Structure Analyses of Iodocuprates(I) VI. Iodocuprates(I) with Dinuclear Anions [Cu2I4]2-and [Cu2I6]4-[1]  
 Abstract    Bis(dipyridiniom ethan)-di-,a-iodotetraiododicuprate(I), [Py2CH 2]2[Cu2I6] and two m odifica­ tions o f bis(tetraphenylphosphonium)-di-^-iodo-diiododicuprate(I) were obtained by reacting Cu with I2 and [Py2C H 2]I2 or [PPh4]I in acetone. The crystal structures o f these com pounds are built up by the cations and the binuclear anions: edge sharing C ul4-tetrahedra in [Cu2I6]4~ and edge sharing, nearly trigonal planar C u l3-units in [Cu2I4]2~. W hereas the Cu2I4 anions (-A) are centrosym m etric and almost planar, the anions (-B) are folded about the bridging I---I contact. The anions [Cu2I6] are in intimate contact with the I -C interactions. 
  Reference    Z. Naturforsch. 40b, 1032—1039 (1985); eingegangen am 1. April 1985 
  Published    1985 
  Keywords    Iodocuprates(I), Synthesis, Crystal Structures 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1032.pdf 
 Identifier    ZNB-1985-40b-1032 
 Volume    40 
97Author    G. Eorge, Sosnovsky, Jan LukszoRequires cookie*
 Title    Novel Spin Labeled Azacrown Ethers  
 Abstract    Four novel spin labeled azacrown ethers contain­ ing either endo-or exo-cyclic nitroxyl moieties were synthesized by short and convenient routes. These com pounds should be of interest in biological studies of m em branes using E SR spectroscopy. 
  Reference    Z. Naturforsch. 40b, 1586—1588 (1985); received May 15 1985 
  Published    1985 
  Keywords    Azacrown E thers, ESR Spectra, Synthesis, Nitroxyl Radical 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1586_n.pdf 
 Identifier    ZNB-1985-40b-1586_n 
 Volume    40 
98Author    R. Ajib, Lai De, Heinrich VahrenkampRequires cookie*
 Title    Synthesen neuer Fe—P-Käfigverbindungen Syntheses of New Fe —P Cage Compounds  
 Abstract    Four reaction types were used with the aim of obtaining new cage com pounds o f com position F e v(C O)v(P R). with R = M e, Ph. Tol; oxidation of the com pounds Fe2(C O)A(P H R)2. photolysis thereof, reaction betw een RPC12 and Fe2(C O)x:_ , and reaction betw een P —Cl containing iron com plexes and F e(C O)42" . Besides several known products, e.g. F e,(C O)y(P R)2 or F e4(C O)M(P R)2, and derivatives of the Fe2(C O)ft(P R X)2 butterfly type com plexes, the new octabisvalene shaped com pounds Fe4(C O)I2(P R)4 with R = M e. Ph. Tol were obtained and confirm ed by a crystal structure analysis for R = Me. Side products of the oxidative conversions were Fe4(C O),2(P 2M e2) (M e P -C 2H 4-P M e) and Fe4(C O)12(P2T ol2)(P H T ol)2 which can be derived from the octabisvalene type. Side products o f the irradiative conversions were F e,(C O)s(P P h)(P H P h)2 and (C O),F e(a-P H P h)2F e(C O)(Q ,H 8), the structure o f the latter being proved crystallographically. 
  Reference    Z. Naturforsch. 41b, 273 (1986); eingegangen am 23. O ktober 1985 
  Published    1986 
  Keywords    Iron Phosphorus Cage Com pounds, Synthesis, Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0273.pdf 
 Identifier    ZNB-1986-41b-0273 
 Volume    41 
99Author    Rajib Lai, DorisW. Olters, Heinrich VahrenkampRequires cookie*
 Title    Preparation and Reactions of the T etrahedrane Molecule Fe2(CO )6(P-/m -C 4Hg)2  
 Abstract    The F e2P2 tetrahedrane com pound Fe2(CO)f,(P—fBu)2 has been obtained by oxidation of Fe2(C O)A («-PH rB u)2. D ue to its short (206 pm) P —P bond it can be called a diphosphene com ­ plex. In contrast to this the P —P bond is its principal centre o f reactivity: CO , C2H 4, and C2H 2 (with concom itant hydrogenation) are inserted, H 2 and HC1 are added with P —P cleavage, and reductive cleavage occurs with L iB H E t,. The crystal structures of the title com pound and of its CO and C2H 4 insertion products have been determ ined. 
  Reference    Z. Naturforsch. 41b, 283—291 (1986); eingegangen am 23. Oktober 1985 
  Published    1986 
  Keywords    Tetrahedrane M olecule F e2P2, Synthesis, Reactivity 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0283.pdf 
 Identifier    ZNB-1986-41b-0283 
 Volume    41 
100Author    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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0796_n.pdf 
 Identifier    ZNB-1986-41b-0796_n 
 Volume    41 
Prev
1
2
3
4
5
...
Next