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1987 (274)
41Author    Hans Möhrle, Heinz DwuletzkiRequires cookie*
 Title    Lactamacetale als potentielle Enamin-Synthone in Heterocyclensynthesen 3. Mitteilung: Das Sarkosinanhydrid-monoIactamacetal-System in Cycloadditionsreaktionen Lactam Acetals as Potential Enamine Synthons in Heterocyclic Synthesis 3rd Communication: The Sarcosinanhydride-monolactamacetal System in Cycloaddition Reactions  
 Abstract    Sarcosinanhydride-monolactamacetal (7) furnishes an equilibrium concentration of the elec-tronically activated tetrahydropyrazine 3b which yields in contrast to other pyrazine derivatives with 4-nitrophenylazide (4) the cycloaddition product 9. Catalytic cleavage of 9 leads to the triazene compound 11. 
  Reference    Z. Naturforsch. 42b, 229—232 (1987); eingegangen am 26. September 1986 
  Published    1987 
  Keywords    Lactam Acetals, Heterocyclic Synthesis, Cycloaddition Reactions, Triazene 
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 Identifier    ZNB-1987-42b-0229 
 Volume    42 
42Author    ArefA M Aly, MostafaM. Kamal, MahmoudS. El-Meligy, AsmaI. El-SaidRequires cookie*
 Title    Reactivity of 1,1-DithioIato Ni(II) and Co(II) with Phenylthiourea, Chlorophenylthiourea and Bis(diphenylphosphinothioyl)methane  
 Abstract    Phenylthiourea, Chlorophenylthiourea, 1,1-Dithiolato Ni(II) The following mixed ligand complexes were synthesized and characterized: Co(Phdtcz) 2 (Phtu) 2 , Co(Phdtcz) 2 (Clphtu) 2 , Co(Phdtcz) 2 (dtm), Ni(Et 2 dtc) 2 (dtm), Ni(Phdtc) 2 (dtm), Ni(p-Toluiddtc) 2 (dtm), Ni(a-naphdtc) 2 (dtm), and Ni(Phdtcz)(Et 2 dtc); where Phdtcz = phe-nyldithiocarbazate, Et 2 dtc = diethyldithiocarbamate, Phdtc = phenyldithiocarbamate, /j-Toluiddtc = p-toluidinedithiocarbamate, a-naphdtc = a-naphthyldithiocarbamate, Phtu = phenylthiourea, Clphtu — chlorophenylthiourea, and dtm — bis(diphenylphosphinothioyl)-methane. Electronic and IR spectra, magnetic, conductivity and X-ray powder diffraction meas-urements were carried out. The Ni(II) and Co(II) complexes are suggested to be square planar and octahedral, respectively. The biological activity of the complexes was also tested. 
  Reference    Z. Naturforsch. 42b, 233—237 (1987); received September 15 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0233 
 Volume    42 
43Author    Sigurd Elz, Walter SchunackRequires cookie*
 Title    Eine alternative Synthese von Homohistamin und strukturverwandten (Imidazol-4-yl)alkylaminen An Alternative Synthesis of Homohistamine and Structurally Related (Imidazole-4-yl)alkylamines  
 Abstract    Bromination of N-(4-oxopentyl)phthalimide (3) leads to isomeric bromoketones 2a and 2e, which undergo cyclisation with formamidine in liquid ammonia to yield homohistamine (la) and 5-methylhistamine (le). Similarly racemic a-methyl-(lb) and 2-methylhomohistamine (lc) are synthesized. The resolution of lb is achieved using (+)-and (—)-di-0-(4-toluoyl)tartaric acid. 1 are intermediates in the synthesis of impromidine like, H 2 -histaminergic compounds. 
  Reference    Z. Naturforsch. 42b, 238—242 (1987); eingegangen am 24. September 1986 
  Published    1987 
  Keywords    Bromination of Methylketones, Halomethylketones, Histamine H 2 -Agonists, Homohistamine, Chiral Aminoalkylimidazoles 
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 Identifier    ZNB-1987-42b-0238 
 Volume    42 
44Author    JosephI. Okogun, ChristopherO. Fakunle, DonaldE U Ekong, HansJ. Lindner, GerhardG. Habermehl, Euphorbia Deacetyldehydroeuphorianin, Euphorbiaceae Poisonii, Macrocyclic DiterpeneRequires cookie*
 Title    X-Ray Crystal Structure Analysis of Deacetyldehydroeuphorianin: The Correct Structure of the Novel Pentacyclic Macrocyclic Diterpene, Euphorianin  
 Abstract    The conversion of euphorianin to deacetyldehydroeuphorianin which was used in an X-ray crystal structure analysis is described. A new pentacyclic structure related to ingol tetraacetate is described for euphorianin. 
  Reference    Z. Naturforsch. 42b, 243—247 (1987); received June 6 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0243 
 Volume    42 
45Author    Wolfgang Hönle, Bernhard Hettich, Arndt SimonRequires cookie*
 Title    Preparation and Crystal Structure of LiGaCLj and LiGaI 4  
 Abstract    The crystal structures of LiGaCl 4 and LiGaI 4 have been determined by single crystal X-ray methods. Both compounds are isotypic with LiAlCl 4 and characterized by LiX 6 octahedra and GaX 4 tetra-hedra. Mean bond lengths are: d(Ga-X) = 217.4 pm (Cl) and 255.9 pm (I); d(Li-X) = 263.9 pm (Cl) and 305.3 pm (I), respec-tively. Common features of the isotypic compounds LiGaX 4 (X -Cl, Br. I) are discussed. 
  Reference    Z. Naturforsch. 42b, 248—250 (1987); eingegangen am 17. Oktober 1986 
  Published    1987 
  Keywords    Crystal Structure, X-Ray, Lithium Compounds 
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 Identifier    ZNB-1987-42b-0248_n 
 Volume    42 
46Author    H. P. BeckRequires cookie*
 Title    Die Kristallstruktur des "Indium-Dibromids" (In I In ,I Br 4 ) The Crystal Structure of "Indium Dibromide" (In'ln ni Br 4 )  
 Abstract    The crystal structure of In'ln III Br 4 (Indium-Di-bromide) has been determined by single crystal methods. The compound crystallizes with a GaCl 2 -type arrangement in the orthorhombic space group Pnna with the lattice constants: a = 797.6(2) pm, b = 1036.6(2) pm, c -1038.8(2) pm. 
  Reference    Z. Naturforsch. 42b, 251—252 (1987); eingegangen am 26. September/17. November 1986 
  Published    1987 
  Keywords    Crystal Structure, Single Crystal Investigation, Indium Halides 
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 Identifier    ZNB-1987-42b-0251_n 
 Volume    42 
47Author    Karlheinz Stahl, Kurt DehnickeRequires cookie*
 Title    Reaktionen von Acetylenkomplexen des Wolfram(IV) mit Tetrachloro-l,2-benzochinon Reactions of Acetylene Complexes of Tungsten(IV) with Tetrachloro-1,2-benzoquinone  
 Abstract    Acetylene complexes of tungsten(IV) of the type [WC14(RCSCR)]2 (R = halogene, phenyl) react with tetrachloro-1,2-benzoquinone to give monomeric tungsten(VI) chelate complexes WC12(02C6C14)2 and W(02C6C14)3, respectively. The complexes have been characterized by their IR and mass spectra. 
  Reference    Z. Naturforsch. 42b, 253—254 (1987); eingegangen am 26. September 1986 
  Published    1987 
  Keywords    Chelate Complexes, Tungsten(VI), Tetrachloro-1, 2-benzoate Ligands, Synthesis 
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 Identifier    ZNB-1987-42b-0253_n 
 Volume    42 
48Author    Johannes Beck, Joachim SträhleRequires cookie*
 Title    Nitrido-Azido-Komplexe des Molybdän(VI): Synthese und Kristallstruktur von MoN(N 3 )2[HB(3,5-Me2pyz) 3 ] und MoN(N 3 )Cl[HB(3,5-Me 2 pyz) 3 ] Nitrido Azido Complexes of Molybdenum(VI): Synthesis and Crystal Structure of MoN(N 3 ) 2 [HB(3,5-Me 2 pyz) 3 ] and MoN(N 3 )Cl[HB(3,5-Me 2 pyz) 3 ]  
 Abstract    Nitrido-diazido-(3,5-dimethyl-l-pyrazolylhydroborate)molybdenum(VI), Nitrido-azido-chloro-(3,5-dimethyl-l-pyrazolylhydroborate)molybdenum(VI), Mixed Crystals, Crystal Structure The reaction of MOC1 4 (C 2 H S CN) 2 with (CH 3) 3 SiN 3 and subsequent addition of Na[HB(3,5-Me 2 pyz) 3 ] yields the nitrido azido complexes MoN(N 3) 2 [HB(3,5-Me 2 pyz) 3 ] and MoN(N 3)Cl[HB(3,5-Me,pyz) 3 ]. The two complexes crystallize from toluene as mixed crystals (space group P2,//i, a ="l630.6, b = 878.0, c -1675.5 pm, ß = 112.67°, Z = 4). Crystallographic equivalent positions are occupied in a 4:1 ratio by diazido and monoazido monochloro complexes. The central Mo atom exhibits a sixfold coordination in form of a distorted octahedron with the nitrido ligand and one of the three pyrazol rings in axial positions. The triply bonded nitrido nitrogen atom (Mo=N 164.2 pm) causes a strong trans effect, resulting in a long Mo—N6 bond (245 pm) to the trans positioned pyrazole nitrogen atom. The Mo—N distances in the equatorial plane are Mo—N2 215 and Mo—N4 216 pm, respectively. The nitrido complexes are remarkably stable against hydrolysis, probably due to steric shielding by the [HB(3,5-Me 2 pyz) 3 ]~ ligand. v(Mo=N) is observed at 1025 cm -1 . 
  Reference    Z. Naturforsch. 42b, 255—259 (1987); eingegangen am 3. Oktober 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0255 
 Volume    42 
49Author    Gernot Heckmann, Bernhard Neumüller, Ekkehard FluckRequires cookie*
 Title    Ein weiteres P-Fluor-Ylid: [N(CH 3 ) 2 ] 2 PF=CH-CH(m-C 4 H 9 )-P[N(CH3) 2 ] 2 (4) Darstellung und NMR-Daten A Further P-Fluoro-Ylide: [N(CH 3 ) 2 ] 2 PF=CH-CH(n-C 4 H 9 )-P[N(CH 3 ) 2 ] 2 (4) Preparation and NMR Data  
 Abstract    Preparation and properties of the title compound 4, [N(CH 3) 2 ] 2 PF 2 -(CH 2) 2 -PF 2 [N(CH 3) 2 ] 2 (2), and [N(CH 3) 2 ] 2 PF-(CH 2) 2 -PF 5 (3), are described. The 'H, 19 F, 31 P, and 13 C NMR spectra in double and triple resonance mode of 4 are recorded and discussed in detail. A /(HF) long-range coupling could be identified. 300 MHz-'H spectra show hindered rotation around the P—N bonds at room temperature. 
  Reference    Z. Naturforsch. 42b, 260—266 (1987); eingegangen am 17. November 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0260 
 Volume    42 
50Author    P. Böttcher, H. Buchkremer-HermannsRequires cookie*
 Title    Darstellung und Kristallstruktur des Bis(2-amino-l-ammonioethan)hexasulfids [H 3 N—(CH 2 ) 2 —NH 2 ] 2 S 6 Synthesis and Crystal Structure of Bis(2-amino-l-ammonioethan)hexasulfide, [H 3 N—(CH 2 )2-NH 2 ]2S 6  
 Abstract    Crystal Structure, Polychalcogenides Bis(2-amino-l-ammonioethan)hexasulfide has been synthesized from ethylendiamine, sulfur and hydrogensulfide in ethanolic solution. It consists of unbranched chains S fi 2 " (helical all-trans-conformation) and monoprotonated ethylenediamine cations; the latter show the uncommon synclinical conformation. A remarkable system of N^H-'-S-bridges links the S 6 2 ~-chains to form an infinite array. It crystallizes in the space group PI with a = 9.203(4) Ä, b — 9.921(4) Ä, c = 15.583(5) Ä, a = 93.03(3)°, ß = 90.04(3)°, y = 79.07(3)°. 
  Reference    Z. Naturforsch. 42b, 267—271 (1987); eingegangen am 15. Oktober/8. Dezember 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0267 
 Volume    42 
51Author    P. Böttcher, H. Buchkremer-HermannsRequires cookie*
 Title    Darstellung und Kristallstrukturen von [K(crypt-2.2.2)] 2 S 7 (H 2 N-(CH 2 ) 2 -NH 2 ) und [K(crypt-2.2.2)] 2 S 6 Synthesis and Crystal Structures of [K(crypt-2.2.2)] 2 S 7 -(H 2 N-(CH 2 ) 2 -NH 2 ) and [K(crypt-2.2.2)] 2 S 6  
 Abstract    Crystal Structure, Polychalcogenides, Cryptates Preparation and crystal structures of the two title compounds are reported. Both of them can be obtained by reaction of K 2 S 5 , sulfur and (crypt-2.2.2) in ethylenediamine (en). [K(crypt-2.2.2)],S 7 -en is monoclinic, S. G. P2,/c, with a = 14.347(5) Ä, b = 13.148(5) Ä, c = 29.42(2) k,ß = 92.84(3)°. JK(crypt-2.2.2)],S 6 is monoclinic, S. G. C2/c, with a = 30.23(2) Ä, b = 8.513(5) Ä, c = 22.37(2) A, ß = 116.16(2)°. The anionic parts of the lattices consist of unbranched chains S 7 2 and S 6 2 , respectively. The characteristic features of the cations [K(crypt-2.2.2)] + in some polysulfides are briefly discussed. 
  Reference    Z. Naturforsch. 42b, 272—278 (1987); eingegangen am 15. Oktober/11. Dezember 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0272 
 Volume    42 
52Author    K. Wieghardt, S. Brodka, K. Peters, E. M. Peters, A. SimonRequires cookie*
 Title    Säure-Base-Eigenschaften des zyklischen Triamins N,N',N"-Trimethyl-l,4,7-triazacyclononan: Die Kristallstruktur seiner monoprotonierten Form [C9H22N3KCIO4) Acid-Base Properties of the Cyclic Triamine N,N\N"-Trimethyl-l,4,7-triazacyclononane and Crystal Structure of its Monoprotonated Form [C 9 H 2 2N 3 ](C10 4 )  
 Abstract    The crystal structure of the monohydroperchlorate of N,N',N"-trimethyl-l,4,7-triazacyclo-nonane, [C 9 H 2 2N3](C10 4), has been determined by single crystal X-ray diffraction. The acidic proton of the cation is bonded to one amine nitrogen and it forms hydrogen bonds to the other two N-atoms in agreement with a proposed model, which has been invoked to interpret successive protonation constants of cyclic triamines. The salt [Me 6 [9]aneN 3 ](BF 4)3 has also been prepared. 
  Reference    Z. Naturforsch. 42b, 279—281 (1987); eingegangen am 8. Oktober/24. November 1986 
  Published    1987 
  Keywords    Macrocyclic Triamine, X-Ray, Acid-Base Properties 
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 Identifier    ZNB-1987-42b-0279 
 Volume    42 
53Author    W. Preetz, J. FritzeRequires cookie*
 Title    c/aso-Halogenohydrohexaborate, I Darstellung der  
 Abstract    reinen c/oso-Halogenohydrohexaborate X"B 6 H 6 _" 2_ , n = 1—6, X = Cl, Br, I, einschließlich der Stereoisomeren c/oso-Halogenohydrohexaborate, I Preparation of the Pure c/o5o-Halogenohydrohexaborates X"B 6 H 6 _" 2_ , n = 1 — 6, X = Cl, Br, I, Including the Stereoisomers Halogenohydrohexaborates, Stereoisomers Through carefully controlled treatment of Na 2 Bf,H 6 with halogens in aqueous alkaline solution, or with halogenosuccinimides, mixtures of the halogenohydrohexaborates X"B6H 6 _ n 2 ", X = Cl. Br, I, n = 1-6, are formed. In der cases with X = Cl, Br, for n = 2-4 both stereoisomers are generated simultaneously in different amounts, whereas with X = I only the trans/mer compounds are formed. All species including the pure isomers have been separated by ion exchange chromatography on diethylaminoethyl cellulose. The composition has been confirmed by chemi-cal analysis. The colourless crystalline tetrabutylammonium salts are fairly stable at room temper-ature. 
  Reference    Z. Naturforsch. 42b, 282—286 (1987); eingegangen am 21. November 1986 
  Published    1987 
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 Volume    42 
54Author    J. Fritze, W. Preetz, H. C. MarsmannRequires cookie*
 Title    c/oso-Halogenohydrohexaborate, II  
 Abstract    n B-NMR-Spektren der c/oso-Halogenohydrohexaborate X"B 6 H 6 _ n 2_ , n = 0-6; X = Cl, Br, I c/oso-Halogenohydrohexaborate, II "B NMR Spectra of the c/oso-Halogenohydrohexaborates X"B 6 H 6 _" 2_ , n = 0-6; X = Cl, Br, I Halogenohydrohexaborates, U B and U B{'H} NMR Spectra The point symmetries of the halogenohydrohexaborates within the nearly complete series X"B 6 H 6 _" 2 ", X = Cl, Br, I; n = 1-5, are determined from the "B and U B{>H} NMR spectra, which show characteristic features for homologous isostructural compounds related to the elec-tronegativity of the substituents. The chemical shifts are mainly influenced by —I, +M, and in the case of X = I by the heavy atom effect. Along with a strong antipodal effect a slight vicinal influence between neighbours in the B 6 cage is observed, increasing with the number of substi-tuted atoms. 
  Reference    Z. Naturforsch. 42b, 287—292 (1987); eingegangen am 21. November 1986 
  Published    1987 
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 Volume    42 
55Author    J. Fritze, W. PreetzRequires cookie*
 Title    c/osö-Halogenohydrohexaborate, III Schwingungsspektren der c/oso-Halogenohydrohexaborate X"B  
 Abstract    ~, n = 1-5; X = Cl, Br, I c/oso-Halogenohydrohexaborate, III Vibrational Spectra of the c/oso-Halogenohydrohexaborates X"B 6 H 6 _" 2_ , n = 1-5; X = Cl, Br, I The IR and Raman spectra of 20 different halogenohydrohexaborates, including pairs of geometric isomers of the series X"B 6 H 6 _ n :_ , X = Cl, Br, I; n = 1—5, have been assigned according to their point groups D 4h , C 4v , C 3v and C 2v determined previously by NMR studies. Due to weak coupling, the vibrations are treated separately to a first approximation in terms of internal B 6 -cage modes on one hand and modes of the substituents against the cage entity on the other hand. Disregarding the splitting by lowered symmetry, depending on the degree of halogenation, all internal modes of the B 6 cluster are observed at nearly unchanged positions in the range of 450—1250 cm -1 . The B 6 —X stretching vibrations, however, exhibit significant shifts to lower energy with increasing mass of substituents. 
  Reference    Z. Naturforsch. 42b, 293—300 (1987); eingegangen am 21. November 1986 
  Published    1987 
  Keywords    Halogenohydrohexaborates, IR Spectra, Raman Spectra 
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 Identifier    ZNB-1987-42b-0293 
 Volume    42 
56Author    Hans Bock, Ralph DammelRequires cookie*
 Title    Gas Phase Reactions, 58 [1, 2] ß-Chloroethyl Azide: HCl Elimination and Pyrolysis  
 Abstract    /3-Chloroethyl Azide, Vinyl Azide. Ketene Imine, 2H-Azirine. Gas Phase Dehydrochlorination The HCl elimination from /3-chloroethyl azide (l-azido-2-chloroethane) over potassium tert. butanolate at 350 K in a low pressure flow system is optimized using PE spectroscopic real-time gas analysis. The highly explosive vinyl azide formed can be purified by cool-trapping the by-products. Its subsequent and virtually hazard-free pyrolysis yields 2H-azirine, which can be isolated at temperatures below 240 K. In contrast, the direct pyrolysis of /3-chloroethyl azide requires temperatures above 710 K and results in a simultaneous split-off of both HCl and N 2 , yielding acetonitrile as the main thermolysis product. No intermediates such as /3-chloroethanimine or ketenimine are observed, a result which is interpreted in terms of chemical activation. 
  Reference    Z. Naturforsch. 42b, 301—307 (1987); eingegangen am 12. September 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0301 
 Volume    42 
57Author    Hans Bock, R. Dammel, DarrylD. DesmarteauRequires cookie*
 Title    Gasphasen-Reaktionen, 59 [1, 2] Die Pyrolysen von Trifluormethylazid und Hexafluorazomethan Gas Phase Reactions, 59 [1, 2] The Pyrolyses of Trifluoromethylazide and Hexafluoroazomethane  
 Abstract    Trifluoromethyl azide decomposes in a low-pressure flow system at rather high temperatures by splitting off N 2 . The nature of the resulting products depends largely on the wall material of the pyrolysis tube: using molybdenum above 1120 K, FCN is observed exclusively. Neither F 2 C=NF nor F 3 C—N=N—CF 3 can be detected as intermediates by comparing their PE spectra with those continuously recorded while increasing the temperature. F 3 C—N = N — CF 3 fragments already at 870 K to give N 2 and F 3 C-CF 3 . The PE spectra of F 3 CN 3 and F 2 C=NF are assigned based on MNDO calculations. 
  Reference    Z. Naturforsch. 42b, 308—314 (1987); eingegangen am 12. September 1986 
  Published    1987 
  Keywords    Trifluoromethylazide, Zram-Hexafluoroazomethane, Perfluoromethanimine, Gas Phase Pyrolysis, PE Spectra, MO Calculations 
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 Identifier    ZNB-1987-42b-0308 
 Volume    42 
58Author    Hans Bock, Ralph DammelRequires cookie*
 Title    Photoelektronen-Spektren und Moleküleigenschaften, 110 [1,2] Tricyanmethan-Derivate X—C(CN) 3 Photoelectron Spectra and Molecular Properties, 110 [1, 2] Tricyanomethane Derivatives X-C(CN) 3  
 Abstract    The photoelectron spectra of tricyanomethane derivatives X—C(CN) 3 with substituents X = H, CH 3 , Br and C 6 H 5 have been recorded and are assigned based on MNDO calculations as well as on radical cation state comparison with the iso(valence)electronic P(CN) 3 , within the series of cyanomethanes H 4 _"C(CN)", and with each other. For HC(CN) 3 , no traces of the isomeric dicyano, ketimine HN = C=C(CN) 2 are detected in the gas phase. Tricyanomethylbenzene, H 5 C 6 —C(CN) 3 , exhibiting the highest first ionization energy of any known singly acceptor substi-tuted phenyl derivative, demonstrates the tremendous electron withdrawing effect of the -C(CN) 3 group. Ausgangspunkt 
  Reference    Z. Naturforsch. 42b, 315—322 (1987); eingegangen am 12. September 1986 
  Published    1987 
  Keywords    Tricyanomethane Derivatives, PE Spectra, MNDO Calculations 
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 Identifier    ZNB-1987-42b-0315 
 Volume    42 
59Author    Karl Häberle, Martin DrägerRequires cookie*
 Title    Über Polygermane, XVIII [1] Drucksynthese der mehrfach funktionellen Digermane Ph 6 _"Ge 2 Cl" (n = 2, 3, 4) und von Ph 2 GeCl 2 On Polygermanes, XVIII [1] Synthesis of the Multifunctional Digermanes Ph 6 _"Ge 2 Cl" (n = 2, 3, 4) and of Ph 2 GeCl 2 under Pressure  
 Abstract    Reaction of Ph 6 Ge 2 with liquid HCl under pressure leads to di-, tri-and tetrachloro phenyl-digermanes. The yield of higher chlorinated products increases with increasing pressure. The analogous reaction of Ph 4 Ge yields Ph 2 GeCl 2 quantitatively. The Ge-Ge bond is most unstable in the case of Ph 3 Ge 2 Cl 3 both chemically and thermally. The crystal structure of Ph 2 Ge 2 Cl 4 has been determined (R = 0.057), Ge-Ge 241.3(1) pm. 
  Reference    Z. Naturforsch. 42b, 323 (1987); eingegangen am 15. September/24. November 1986 
  Published    1987 
  Keywords    Functional Digermanes, Synthesis, Structure 
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 Identifier    ZNB-1987-42b-0323 
 Volume    42 
60Author    Marianne Baudler, Doris DüsterRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 174 [1] l,3-Diaminotriphosphan(5), H 2 N-PH-PH-PH-NH 2 , ein neues Produkt der Spaltung von weißem Phosphor mit Natrium in flüssigem Ammoniak Contributions to the Chemistry of Phosphorus, 174 [1] 1,3-Diaminotriphosphane(5), H 2 N-PH-PH-PH-NH 2 , a Novel Product of the Cleavage of White Phosphorus with Sodium in Liquid Ammonia  
 Abstract    l,3-Diaminotriphosphane(5), Triphosphane(5), White Phosphorus, Liquid Ammonia In the reaction of white phosphorus with sodium in liquid ammonia the hitherto unknown 1.3-diaminotriphosphane(5) (1) is formed besides other products. The composition and the structure of 1, which is only stable in liquid ammonia, have been elucidated by M P NMR spectroscopy. Of the three possible diastereomers only the erythro,erythro-isomer la with transoid-ohented NH : groups is present. 
  Reference    Z. Naturforsch. 42b, 330—334 (1987); eingegangen am 30. Oktober 1986 
  Published    1987 
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 Identifier    ZNB-1987-42b-0330 
 Volume    42 
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