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1984 (324)
61Author    H. P. BeckRequires cookie*
 Title    Die Kristallstruktur des "Indium-Diiodids" (Iirln I4) Crystal Structure, Single Crystal Investigations, Radii of Indium Ions  
 Abstract    The crystal structure of In'ln111^ (Indium-diiodide) has been determined by single crystals X-ray methods. The compound crystallized with a GaCl2-type arrangement in the orthorhombic space group Pnna (lattice constants: a = 842.7(3) pm, b = 1096.5(3) pm, c — 1117.3(3) pm). Coordina­ tion polyhedra and bond lengths are discussed in comparison with other In iodides. 
  Reference    Z. Naturforsch. 39b, 310 (1984); eingegangen am 12. Oktober 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0310 
 Volume    39 
62Author    HelgeW. IllnerRequires cookie*
 Title    Das Infrarotspektrum von matrixisoliertem SFC1 Infrared Spectrum of M atrix Isolated SFCl  
  Reference    Z. Naturforsch. 39b, 314 (1984); eingegangen am 27. September/29. November 1983 
  Published    1984 
  Keywords    Sulfur Chloride Fluoride, IR Spectra, Force Constants 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0314.pdf 
 Identifier    ZNB-1984-39b-0314 
 Volume    39 
63Author    OttoM. Undt, H. Einz Riffel, G.Erd Becker, A.Rndt SimonRequires cookie*
 Title    Element—Element-Bindungen, III [1] Intermolekulare Sb-** Sb-Wechsel Wirkungen im kristallinen Tetramethyldistiban1 Elem ent—Elem ent Bonds, III [1] Intermolecular S b--S b Interactions in Crystalline Tetram ethyldistibane  
 Abstract    Tetramethyldistibane which shows a colour change from deep red to pale yellow upon melting, has been subjected to single-crystal x-ray diffraction analyses at —21° and —139 °C (orthorhom-bic, Pnma, Z = 4, —139 °C: a = 1150.9(3); b = 1136.8(2) ; c = 651.6(2) pm). The molecules adopt the antiperiplanar conformation with the crystallographically imposed symmetry m (Cs) and are aligned in extended linear antimony chains with short intermolecular contacts (—139 °C: Sb—Sb 283.8(1), Sb--Sb 367.8(1) pm; Sb—Sb---Sb 179.2°). The structure is compared with those of similar compounds. 
  Reference    Z. Naturforsch. 39b, 317 (1984); eingegangen am 23. September 1983 
  Published    1984 
  Keywords    Tetramethyldistibane, Extended Linear Chain Compounds, Thermochromic Effects, Intermolecular Sb---Sb Interactions 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0317.pdf 
 Identifier    ZNB-1984-39b-0317 
 Volume    39 
64Author    D. Ieter Rehder, H.-Ch BechtholdRequires cookie*
 Title    Carbonylniobchemie, VII* Die 31P —NMR-Spektren der Phosphinderivate des [Nb(f/5-C5H5)(CO)4]  
 Abstract    The 1|P N M R Spectra of Phosphine Derivatives of [Nb(775-C5H 5)(C O)4] Carbonyl-cyclopentadienylniobium, Phosphorus-NMR <3(31P) NMR data of the complexes [Nb(Cp)(CO)3PZ3] (Cp = ?75-C5H 5) and cis-[Nb(Cp)(CO)2(PZ3)2] [Z = H, R (alkyl and aryl), OR, NMe2, PR2] are interpreted on the basis of varying P(3pC T) and P(3dT) contributions to the bond-order density matrix in the paramagnetic deshielding term of the overall shielding constant. For Z = R, shielding of the 31P nucleus of the coordinated phosphine decreases as the cone angle 6 increases, as a result of increasing p con­ tribution. For Z = OR and NMe2, P—Nb it interactions dominate, and the decrease of the P(3d^) occupation with increasing 6 leads to an increase of shielding. In the case of alkoxiphosphines, decreasing 31P shielding is accompanied by an increase of the shielding of the metal nucleus [quantified here by <3(51V) of the vanadium complexes], while, for the substantially less powerful n interacting alkylphosphines, shielding trends for the two nuclei parallel each other. Coordination shifts zl(5(P) are somewhat greater for small phosphines but, spanning a range of 80 ± 30 ppm, tend to be comparatively invariant. In [V(Cp)(CO)3PZ3], the 31P nucleus is deshielded by 10 to 30 ppm with respect to the corresponding niobium complexes. 
  Reference    Z. Naturforsch. 39b, 323 (1984); eingegangen am 30. September 1983 
  Published    1984 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0323.pdf 
 Identifier    ZNB-1984-39b-0323 
 Volume    39 
65Author    E. Bill1, N. Blaes2, K. F. Fischer3, U. G. Onser2, K. H. Pauly3, R. Preston2, F. Seel4, R. Staab4, A.X T Rautw Ein1Requires cookie*
 Title    Crystal Structure and Mössbauer Spectroscopic Investigation of the Low Temperature Molecular Dynamics of Hexa(2-ethylimidazole)iron(II) Hydridotetracarbonylferrate(-II)  
 Abstract    The title compound 1 was synthesized as reaction product of pentacarbonyl iron with 2-ethyl-imidazole. A Zerewitinoff-determination shows that we are rather dealing with hydrido-tetracar-bonylferrate(-II) than with tetracarbonylferrate(-I) as supposed in a preceding paper. A new crystal structure analysis of 1 was performed. With respect to [HFe(CO)4]~ we found that three CO groups are ordered with normal tetrahedral angles, while the fourth CO group shows statisti­ cal distribution over three sites (disordered sites). The temperature parameters of the disordered CO sites are considerably more anisotropic than those of the ordered CO sites. Experimental Mössbauer spectra have been recorded between 4.2 K and 288.7 K. 1 exhibits a Mössbauer pattern with two subspectra, one for each of the cations and the anions. The cation subspectrum reflects normal ferrous high-spin behavior, while the anion subspectrum shows peculiar anomalies around 200 K. On the basis of our X-ray structure results molecular orbital calculations have been performed with the aim of deriving electric field gradient tensors for the various stochastic substates of [HFe(CO)4]~. These tensors were then used within the frame on an analytical lineshape formula. It turns out that the statistical distribution of the fourth CO group over three sites is associated with a jump behavior, similar to trapped diffusion, of the CO group among the three sites and not with static disorder. The Fe atom follows this jumb behavior, however, its triangular displacement body with jump distance d ~ 0.30 Ä is considerably smaller than that of the CO group. 
  Reference    Z. Naturforsch. 39b, 333 (1984); eingegangen am 15. A u gu st/10. Oktober 1983 
  Published    1984 
  Keywords    Hydridotetracarbonylferrate, Crystallography, Mössbauer Spectra, Temperature Factors, Molecular Dynamics 
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 Identifier    ZNB-1984-39b-0333 
 Volume    39 
66Author    Joseph Grobe, G. Erald, H. Enkel, B. Ernt Krebs, Nikolaos VoulgarakisRequires cookie*
 Title    Atran-analoge Verbindungen des Typs Me(R)SiSiMe (OCH2CH2)2N I I (I) o  
 Abstract    c h 2 Atrane Analogous C om pounds of the Type M e(R)SiSiM e (OCH->CH2)?N I 1 (1) Heterocyclic cage compounds of type I (compounds 8—10) have been prepared by condensa­ tion reactions of 1,2,2-trifunctional disilanes M e(R)XSiSiM eX2 (R = Me, Ph, OEt; X = NMe2, OEt) with triethanolamine using the "Dilution Principle". The starting compounds are obtained by Si—Me cleavage of Si2Me6 with acetylchloride/AlCl3 followed by either aminolysis with HNMe2 or alcoholysis with EtOH. 'H NMR spectra indicate N—*Si(l) intraction with the more acidic Si 
  Reference    Z. Naturforsch. 39b, 341—351 (1984); eingegangen am 30. August/26. Oktober 1983 
  Published    1984 
  Keywords    Silatranes, Transanular N — * Si-Interactions, NMR Spectra, X-Ray 
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 Identifier    ZNB-1984-39b-0341 
 Volume    39 
67Author    G. Erhard, G. HoffmannRequires cookie*
 Title    Uber einige Redox-Reaktionen von Iodgallanen und lodindanen mit organischen Disulfiden Some Redox Reactions of Iodogallanes and Iodoindanes with Organic Disulfides  
 Abstract    G allium , Indium, D iiodom ethylthio-and -phenylthio C om pounds, Synthesis The redox reactions betw een the iodogallanes G a l3 as well as PhG aI2 and the disulfides CH3SSC H 3 and PhSSPh lead to the m onoalkylthio-and m onoarylthiogallanes C H 3SG aI2 and PhSG aI2 respectively. N o reaction occurs betw een In l3 and these disulfides, w hereas, surprising­ ly, P h ln l2 does react to give the m onoalkylthio-and m onoarylthioindanes C H ,SInI2 and PhSInI2, respectively, Ph2GaI and Ph2InI form only the thioether adducts with the disulfides, which were not isolated. Initative m echanism s of these reactions are reported. 
  Reference    Z. Naturforsch. 39b, 352 (1984); eingegangen am 3. O ktober 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0352 
 Volume    39 
68Author    Mit HexafluorisopropylideniminRequires cookie*
 Title    Reaktionen von Phosphanen Me"PH3_n (n = 0—3)  
 Abstract    Reactions of the Phosphanes M e"PH3_" (n = 0—3) with Hexafluorisopropylidenimine Helm ut Kischkel und G erd-V olker Röschenthaler* H exafluoroisopropylidenim ine, Insertion, (l,l,l-T rifluoro-2-am in o-2-trifluorom ethyl)ethylph osph anes, N -[ (l , 1, l-Trifluoro-2-trifluorom ethyl)ethyl]trim ethylphosphine-im ine 
  Reference    Z. Naturforsch. 39b, 356 (1984); eingegangen am 12. August 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0356 
 Volume    39 
69Author    TonyD. Ebaerdem AekerRequires cookie*
 Title    Versuche zur Synthese 2  
 Abstract    2'-disubstituierter ds-Bis(phenyl)bis(triphenylphosphan)pIatin(II)-Verbindungen und Kristallstruktur des ds-Bis(2-nitrophenyl)bis(triphenylphosphan)platin(II) On the Form ation of 2,2'-D isubstituted ds-B is-(phenyl)bis(triphenylphosphane)platinum (II) Compounds and Crystal Structure D eterm ination of ds-B is(2-nitrophenyl)bis(triphenylphosphane)platinum (II) H ans-A lbert Brune* und M anfred Wiege Lehrstuhl für Organische C hem ie I der U niversität U lm . D-7900 U lm /D onau und 
  Reference    Z. Naturforsch. 39b, 359 (1984); eingegangen am 8. August 1983 
  Published    1984 
  Keywords    2, 2'-D isubstituted Phenyl-Platinum C om pounds, Syntheses, Crystal Structure, M olecular Structure 
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 Identifier    ZNB-1984-39b-0359 
 Volume    39 
70Author    D. Ietm Ar KuckRequires cookie*
 Title    Synthesis of Regio-and Stereospecifically Deuterium Labelled 2-Benzylindanes  
 Abstract    1, la) are hydrogenated to 2-benzylindanes (2) using tris-(triphenylphos-phine)-rhodium (I)-chloride in benzene by a strict cis-1,2 addition of hydrogen to the double bond. Thus, stereo-and regio-specific deuterium labelling at the five-membered ring of various 2-benzylindanes has been carried out. The high selectivity of deuterium incorporation is shown independently by 'H N M R and mass (M IK E*) spectrometry of selected 2-benzylindanes. 
  Reference    Z. Naturforsch. 39b, 369—374 (1984); received Septem ber 19 1983 
  Published    1984 
  Keywords    Indanes, Indenes, D euterium Labelling, H om ogeneous Catalytic Hydrogenation, Stereochemistry 2-Benzylindenes ( 
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 Identifier    ZNB-1984-39b-0369 
 Volume    39 
71Author    Christoph Elschenbroich, R. Einhart, M. Öckel, E. Dgar BilgerRequires cookie*
 Title    M etalls-Komplexe von Benzolderivaten, XXI [1]  
 Abstract    Bis(f/12 3-4'4a'9a-anthracen)chrom und Bis(iy1,2,3* 4* 4"* 9a-9.10-dihydroanthrancen)-chrom durch Metallatom-Ligand-Cokondensation Metal-jr-Complexes of Benzene Derivatives, XXI [1] Bis(?/1 2 3 44a 9a-anthracene)chromium and Bis(?/1 2 3 4 4a 9a-9,10-dihydroanthracene)chromium via M etal Atom Ligand Cocondensation Bis(anthracene)chrom ium , Bis(9,10-dihydroanthracene)chrom ium , M etal Ligand C ocondensation, H ydrogenation, M agnetic R esonance 
  Reference    Z. Naturforsch. 39b, 375 (1984); eingegangen am 28. Juli 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0375 
 Volume    39 
72Author    G. Kollenz, P. SeidlerRequires cookie*
 Title    Versuche zur Oxidation von 1.5-Benzothiazepin — bzw. 1.5-Benzoxazepin- 2.4-3 H.5 H-dionen Investigations Concerning Oxidation Reactions of 1,5-Benzthiazepin — and 1,5-Benzoxazepin- 2.4-3 H ,5H -diones  
 Abstract    1.5-B en zthiazep in -2,4-3H ,5H -dion e, Ring Contraction R eaction, 1.5-B en zoxazep in -2.4-3H ,5H -dione, M alonic A cid A m ides 
  Reference    Z. Naturforsch. 39b, 384 (1984); eingegangen am 10. O ktober 1983 
  Published    1984 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0384.pdf 
 Identifier    ZNB-1984-39b-0384 
 Volume    39 
73Author    SanaaO A Bd, Allah, SherifM. Fahmy, HamedA. EadRequires cookie*
 Title      
 Abstract    A lkylation, A lkylcyclization, C yanoethylation, A cetylation The 5-arylm ethylene derivatives of 2-phenylhydrazono-4-thiazolidinone (1) reacted with phenacyl bromide and with ethyl brom oacetate to yield the thiazolo[2,3-c]triazine derivatives (3) and (4). The reaction o f 1 with carbon disulphide in alkaline solution afforded the bis(N '-2-phenylhydrazono-4-thiazolidinone)thiocarbonyl derivatives (6). Cyanoethylation o f 1 afforded the N '-/3-cyanoethylphenylhydrazono derivatives (7). 
  Reference    Z. Naturforsch. 39b, 390 (1984); received June 7 1983 
  Published    1984 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0390.pdf 
 Identifier    ZNB-1984-39b-0390 
 Volume    39 
74Author    Hans Geiger, KarelV. Ande Casteele, ChristiaanF. Van, Sumere Laboratorium, P. Lantenbiochem Ie, RijksuniversiteitG K L Ent, LedeganckstraatRequires cookie*
 Title    Uber eine thermische Transmethylierungsreaktion bei Flavon-5-methylethern On a Therm al Transm ethylation Reaction with Flavon-5-methylethers W est-G erm any  
 Abstract    F lavonem ethylethers, Therm al Transm ethylation, TLC, HPLC, Reaction M echanism e U pon heating to 300 °C partial luteolinem ethylethers undergo transmethylation. A reaction m echanism e is put foreward. 
  Reference    Z. Naturforsch. 39b, 393—396 (1984); eingegangen am 5. Septem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0393 
 Volume    39 
75Author    Cr Simionescu, M. I. Popa, S. DumitriuRequires cookie*
 Title    Bioactive Polymers, XIV Immobilization of Ampicillin on BIOZAN R  
 Abstract    Imm obilization, Am picillin, Biozan R The ampicillin coupling on B IO Z A N R (a polysaccharide o f microbial synthesis X a n th o m o n a s cam pestris) is studied by the activation o f carboxylic groups by dicyclohexylcarbodiim ide. The follow ing optimum reaction parameters are settled on the basis of an experim ental program: time = 7.5 h, temperature = 10 °C, dicyclohexylcarbodiim ide concentration = 1.10-3 m ole, ampicilli-ne conentration = 2.4 • 10~3 mol. Under these conditions up to 37% o f ampicillin with respect to the polymer is coupled. The microbiological and hydrolysis studies under the conditions o f the human physiological pH attest the ampicillin maintains its activity and may be released in oral administration. 
  Reference    Z. Naturforsch. 39b, 397 (1984); received July 19 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0397 
 Volume    39 
76Author    Gezielte, Ingo-Peter Lorenz, JohannesM. EsselhäuserRequires cookie*
 Title    N O T IZ E N  
 Abstract    Synthese des Thionylkomplexes Fe3(CO)9S(SO) durch Oxidation einer Sulfidobrücke in Fe3(CO)9S2 D irected Synthesis of the Thionyl Complex Fe3(C O)9S(SO) by Oxidation of One Sulfido Bridge in Fe3(C O)9S2 M etal-Coordinated Sulfurm onoxide, Thionyl Ligand, Thionyl Cluster Com plex, Sulfur Bridge O xidation R eaction 
  Reference    Z. Naturforsch. 39b, 403 (1984); eingegangen am 26. O ktober 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0403_n 
 Volume    39 
77Author    WolfgangV. Oelter, A.Bdul Malik, Nighat AfzaRequires cookie*
 Title    Synthese von D-Forosamin aus D-Glucose Synthesis of D -Forosam ine from D-Glucose  
 Abstract    D -F orosam ine, D -G lu cose, Synthesis A convenient synthesis o f the naturally occurring deoxyam ino sugar forosam ine from glucose as start­ ing material is described. The yields for the in­ term ediates (eth yl-4,6-d i-0-toxyl-2,3-d id eoxy-a-D -erythro-hex-2-enopyranoside, 4-iodo-2,3,4-tride-oxy-ö-O -tosyl-a-D -threo-hex-2-enopyranoside, ethyl 4-azid o-2,3,4-trideoxy-6-0-tosyl-a-D -erythro-hex-2-enopyranoside, ethyl 4-am ino-2,3,4,6-tet-radeoxy-a-D -erythro-hexopyranoside) are all in the range betw een 70 to 80%. 
  Reference    Z. Naturforsch. 39b, 405—5 (1984); eingegangen am 23. A ugust 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0405_n 
 Volume    39 
78Author    Evamarie Hey, Frank Weller, Kurt Dehnicke, G. Ünther MaierRequires cookie*
 Title    Die Kristallstrukturen von cis-und fraws-Dichlorstilben The Crystal Structures of cis-and fram -Dichlorostilbene  
 Abstract    cis-und fra/is-Dichlorostilbene, Crystal Structure The crystal structures of cis-and rram -dichlorostilbene were determ inedfrom X-ray diffraction data, cw-dichlorostilbene crystallizes in the rhom bohedral space group R 3 with 18 formula units per unit cell (821 observed independent reflexions, R = 0.064) with the dim ensions a = b = 3323, c = 601 pm, y = 120°. The m olecule corresponds to the point group C, with a C = C bond length o f 133 pm; the dihedral angles o f the phenyl rings with the corresponding C = C —Cl plane are 48° and 72°, respectively. Trans-dichlorostilbene crystallizes in the m onoclinic space group P 2,/n with two formula units per unit cell (1138 independent reflexions, R = 0.056) with the dim ensions a = 572, b = 1733, c = 641 pm, ß = 111°. The m olecule is centrosym m etric (C,) with a C = C b o n d length o f 133 pm; the dihedral angle o f the phenyl rings and the Cl — C = C plane is 71°. The stilbene m olecules are disordered about the centre o f symmetry in two orientations with the ratio 3:7. 
  Reference    Z. Naturforsch. 39b, 409 (1984); eingegangen am 26. O ktober 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0409 
 Volume    39 
79Author    P. Böttcher, H. Buchkrem, Er-H Erm Anns, J. BaronRequires cookie*
 Title    Die Kristallstruktur des Ethylendiammonium-hexasulfids (2. Mitteilung über Alkylammonium-Polysulfide [1]) The Crystal Structure of Ethylenediam m onium Hexasulfide  
 Abstract    Crystal Structure, Polychalcogenides E thylenediam m onium hexasulfide has been synthesized from ethylenediam ine, sulfur, and gaseous H 2S in aqueous solution. X-ray investigations on single crystals revealed its structure. The m onoclinic unit cell contains eight formula units, the space group is Cc. The sulfur atoms form unbranched zig-zag chains S62~ in a//-f/wzs-conformation. 
  Reference    Z. Naturforsch. 39b, 416 (1984); eingegangen am 17. N ovem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0416 
 Volume    39 
80Author    G. Erhard, C. Ordier, Erwin Czech, H. Erbert SchäferRequires cookie*
 Title    Zur Kenntnis der Hochdruckphase BaAl2 On BaA l2, a High Pressure Phase  
 Abstract    High Pressure Phase B aA l2, Crystal Structure At 30 kbar and 1000 °C in the B a/A l-system the com pound B aA l2 exists, which remains m eta­ stable under standard temperature and pressure after quenching. The new com pound crystallizes in the MgCu2-type with a — 870.2(5) pm. 
  Reference    Z. Naturforsch. 39b, 421 (1984); eingegangen am 14. Novem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0421 
 Volume    39 
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