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1984[X]
101Author    UteH. Onrath, H. Einrich VahrenkampRequires cookie*
 Title    Cluster-Redoxpotentiale: Feineffekte durch Variation von Metallatomen und Liganden Cluster Redox Potentials: Fine Tuning by Variations of Metal Atoms and Ligands  
 Abstract    Influences due to the variations of metal atom s and ligands in organom etallic clusters of the E M 3 tetrahedrane type have been studied in detail with respect to their electrochemical behaviour. Replacem ents of metal atom s or of fi3 bridging chalcogen ligands cause rather small effects in the expected directions. The different charge along isoelectronic series of E C o3+, EFeCo2, E F e2C o" clusters causes drastic changes. 23 mono-, bis-, and tris-isonitrile derivatives of SFeCo2(C O)9were prepared. The influence of X groups in X —C6H 4—NC on the cluster redox potentials is small; it can be expressed by an equation of the H am m ett type. 
  Reference    Z. Naturforsch. 39b, 545 (1984); eingegangen am 14. November 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0545 
 Volume    39 
102Author    UteH. Onrath, H. Einrich VahrenkamRequires cookie*
 Title    Chemische Redoxreaktionen von Dreikernclustern Chemical Redox Reactions of Trinuclear Clusters  
 Abstract    The clusters E C o3(C O)9 (E = S, PPh) can be converted with one electron oxidants to their cations which are only stable in solution. Reduction o f E F eC o2(C O)9 (E = S, PPh) with sodium naphthalenide or cobaltocene produces the anions which are stable as P P N + or CoCp2+ salts. The clusters RPCo3(C O)9 (R = Ph, N E t2, O Bu) react with iodine to form the tetranuclear clusters (R P)2Co4(C O)10. 
  Reference    Z. Naturforsch. 39b, 555 (1984); eingegangen am 14. N ovem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0555 
 Volume    39 
103Author    UteH. Onrath, Heinrich VahrenkamRequires cookie*
 Title    Metallaustausch an Clustern unter Redox-Bedingungen Metal Exchange in Clusters under Redox Conditions  
 Abstract    O rganometallic Clusters, M etal Exchange The paramagnetic clusters E C o3(C O)9 with E = S, Se, P-r-Bu, PPh, PN Et2, PO Bu, PSEt, some of which were fully characterized for the first tim e, were reacted with N a2F e(C O)4. The resulting metal exchange which is a redox reaction with formation o f N aC o(C O)4 produced the clusters E FeC o2(C O)9. Further treatm ent with Na2F e(C O)4 and acidification produced the clusters EFe2C o(C O)9H , the anions o f which could be isolated as PPN salts. Electron transfer catalysis with benzophenone ketyl allow ed the conversion o f E F eC o2(C O)9 (E = S, Se, P N E t2) with NaM Cp(CO)3 (M = M o, W) into the chiral clusters E F eC oM (C O)8Cp. 
  Reference    Z. Naturforsch. 39b, 559 (1984); eingegangen am 14. N ovem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0559 
 Volume    39 
104Author    R. Udolf HoppeRequires cookie*
 Title    Eine Notiz über Li4[P b 0 4] [1, 2]  
 Abstract    A Note on Li4[ P b 0 4] [1,2] Helm ut Stoll Crystal Structure, X -R ay The crystal structure o f Li4P b 0 4 is reexam ined by new X-ray data [Ag-K a, four-circle-diffrac-tom eter C A D 4 (E nraf-N onius), 863 o f 890 I0, R = 1,88% and Rw = 1,79%, temperature factors of all particles 'anisotropically' refined, parameters see text]. Space group and parameters (see text) are confirm ed, errors in the structure description [1] corrected. The characteristic features are shown using E xtended Schlegel Diagrams o f the coordination polyhedra. The M adelung Part o f Lattice Energy, M A P L E , is calculated and discussed. 
  Reference    Z. Naturforsch. 39b, 566—576 (1984); eingegangen am 23. D ezem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0566 
 Volume    39 
105Author    P. Böttcher, R. KellerRequires cookie*
 Title    Die Kristallstruktur des a-Na2S5 The Crystal Structure of a-N a2S5  
 Abstract    Crystal Structure, P olychalcogenides Na2S5 has been synthesized from /3-Na2S2 and excess sulfur by a tw o step reaction. A solid state reaction at 200 °C was carried out, which was then follow ed by a m elting reaction at 500 °C. X-ray investigations on single crystals revealed the structure of the a-m odification. The orthorhom bic unit cell contains four formula units; the space group is Pnma. The sulfur atoms form unbranched zig-zag-chains S52-in ds-conform ation. 
  Reference    Z. Naturforsch. 39b, 577 (1984); eingegangen am 21. Novem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0577 
 Volume    39 
106Author    Klaus Brodersen, M. Anfred, Cygan Und, Hans-Ulrich HummelRequires cookie*
 Title    Die Kristallstruktur von SrHg(SeCN)4 * 4 Pyridin The Crystal Structure of SrHg(SeCN)4-4 Pyridine  
 Abstract    Strontium Tetraselenocyanatom ercurate(II) ■ 4 Pyridine, Crytsal Structure Single crystals o f S rH g (S e C N)4 • 4 pyridine are prepared by reaction o f K ; H g (S e C N)4 with S rC l2 in CH 3OH /C2H5OH in the presence o f pyridine. The crystal structure was solved with X-ray m ethods (M r = 1024.1. space group P 4 n 2 . Z = 2, a = 9.552(2) Ä , c = 17.610(7) Ä , V = 1606.7 Ä 3, A (A gK a) = 0.5583 Ä , dc = 2.12 g -c m "3, ^ (A g K a) = 57.40 cm -1. F(000) = 943.7. T = 298 K. Final R = 0.043 for 1050 independent reflections). The structure consists of nearly tetrahedral H g(SeC N)4-units. The SeCN-group is linear within the experim ental error. The N-atom s o f SeCN and pyridine contribute to the Archim edean antiprismatic coordination o f strontium. 
  Reference    Z. Naturforsch. 39b, 582 (1984); eingegangen am 5. D ezem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0582 
 Volume    39 
107Author    KrishnaK. Pandey, M. Athias, N. Oltem Eyer, GeorgeM. Sheldrick, Ray SahebRequires cookie*
 Title    Crystal Structure of 2-Thiopyrrole-l,2-dicarboximide-(bis-triphenylphosphine)copper(I)chloride, [(Ph3P)2Cu(CI)C6H4N2OS] G öttingen, Federal Republic of Germany  
 Abstract    C opper(I), Thiopyrrole, Crystal Structure Crystals o f the title com pound are m onoclinic, space group C 2tc, a = 3858.0(7), b = 1013.8(2), c = 2982.1(6) pm , ß — 139.76(3)° and Z — 8 . The structure was refined to R — 0.063 for 2155 
  Reference    Z. Naturforsch. 39b, 586—5 (1984); eingegangen am 3. Januar 1984 
  Published    1984 
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 Identifier    ZNB-1984-39b-0586 
 Volume    39 
108Author    KrishnaK. Pandey, H. Erbert, W. Roesky, MathiasN. Oltem Eyer, G. Eorge, M. SheldrickRequires cookie*
 Title    Preparation and Structure of Tetraphenylphosphonium Aquotetrachlorothionitrosylosmium(II), [PPh4][(H 20 )0 s(N S )C l4]  
 Abstract    Thoionitrosyl, O sm ium . Crystal Structure Trithiazyltrichloride reacts with osmium trichloride to give a green product o f com position O s(N S)C l3 (1). A ddition o f [PPh4]Cl to 1 in aqueous solution yields [PPh4]2[O s(N S)C ls] (2) which 
  Reference    Z. Naturforsch. 39b, 590—5 (1984); eingegangen am 3. Januar 1984 
  Published    1984 
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 Identifier    ZNB-1984-39b-0590 
 Volume    39 
109Author    W. Erner Tillmetz, Dietrich WabnerRequires cookie*
 Title    Vergleichende Untersuchungen an Pb8Tl50 24-, a -P b 0 2-und Tl20 3-Elektroden Comparative Investigations of Pb8Tl50 24, a -P b 0 2 and T120 3 Electrodes  
 Abstract    New Oxide Electrode, A nodic D eposition. Electrochem ical Properties The anodic deposition o f PbgTl50 24 is compared with that one of T120 3 and a -P b 0 2. Scanning electron m icroscopic pictures o f the oxide surfaces show obvious differences. This should be the reason for different oxygen overpotentials measured at these anodes. Com parative cyclic voltam-mograms show, that the redox behaviour o f Pb8Tl50 24 in sulfuric acid is essentially determ ined by the lead ions. Because of the high corrosion rate Pb8Tl50 24 is not suitable as anode material for electrolysis in sulfuric acid. 
  Reference    Z. Naturforsch. 39b, 594 (1984); eingegangen am 16. Januar 1984 
  Published    1984 
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 Identifier    ZNB-1984-39b-0594 
 Volume    39 
110Author    M. Arkus, W. Ieber, D. Ieter, W. Irth, Christian BurschkaRequires cookie*
 Title    Synthese und Struktur einiger Methyl(dicarboxilato)stibane Syntheses and Structure of Some M ethyl(dicarboxilato)stibanes  
 Abstract    M ethyldiethoxistibane, M ethyl(m aleato)stibane, M ethyl(phthalato)stibane, X-Ray M ethyldiethoxistibane and maleic or phthalic acid in a ratio o f 1:1 in ethanolic solution at 
  Reference    Z. Naturforsch. 39b, 600 (1984); eingegangen am 22. D ezem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0600 
 Volume    39 
111Author    A. Nand, K. Sharma, N. K. KaushikRequires cookie*
 Title    Acetylacetonatobis(cyclopentadienyl)titanium(IV) and -zirconium(IV) Dithiocarbamates  
 Abstract    Acetylacetonatobis(cyclopentadienyl)titanium (IV) and -zirconium (IV) D ithiocarbam ates, Conductance, 'H NM R Spectra. IR Spectra 
  Reference    Z. Naturforsch. 39b, 604 (1984); received January 3 1984 
  Published    1984 
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 Identifier    ZNB-1984-39b-0604 
 Volume    39 
112Author    Jon Brunvoll, Marcello Colapietro, AldoD. Om Enicano, ClaraM. Arciante, Gustavo Portalone, Istvan HargittaiRequires cookie*
 Title    Molecular Structures of /?-Methylsulphonylbenzoic Acid and Methylphenylsulphone: Comparison of X-Ray and Electron Diffraction Results  
 Abstract    A ugust 8 /D ecem b er 15, 1983 Crystal versus Free M olecule, B en zen e Ring D istortions, p-M ethylsulphonylbenzoic A cid, M ethylphenylsulphone The molecular structures of p-m ethylsulphonylbenzoic acid and m ethylphenylsulphone have been accurately determ ined by X-ray crystallography and gas electron diffraction, respectively. A fter correction for systematic effects, the geom etry o f the crystal m olecule is seen to agree with that o f the free m olecule within a few thousandths o f an Ä unit for bond distances and a few tenths of a degree for bond angles. A n exception is the S —M e bond distance, which is ca. 0.02 Ä shorter in the crystal. The distortion o f the benzene ring angles from 120°, an effect o f the — SCKMe substituent, is virtually the same from both experim ents. 
  Reference    Z. Naturforsch. 39b, 607 (1984); received 
  Published    1984 
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 Identifier    ZNB-1984-39b-0607 
 Volume    39 
113Author    Peter Paetzold, Christoph Von Plotho, Heinrich Schwan, Hans-Ulrich MeierRequires cookie*
 Title    Die Addition protonenaktiver Stoffe an die Dreifachbindung der Iminoborane The A ddition of Protic Reagents to the Triple Bond of Iminoboranes  
 Abstract    Im inoboranes, C hloroprotonation, A lkoxyprotonation, A m inoprotonation Protic reagents XH (X = CI, R O . R2N) were added to the triple bond o f the im inoboranes /P rB = N /P r and B uB =N rB u, in a rapid and uncatalyzed reaction. 
  Reference    Z. Naturforsch. 39b, 610 (1984); eingegangen am 27. D ezem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0610 
 Volume    39 
114Author    K. C. Kumara Swamy, M. Dam Odara Poojary, S. S. Krishnamurthy, H. M. AnoharRequires cookie*
 Title    Aziridinolysis of (Triphenylphosphazenyl)pentachlorocyclotriphosphazene X-Ray Crystal Structure of N3 P3 (NPPh3 )(NC2 H4 ) 5  
 Abstract    (Triphenylphosphazenyl)pentachlorocyclotriphosphazene. Aziridinolysis, 'H N M R , X -R ay Reaction of aziridine with N 3P3(NPPh3)C l5 (1) affords the derivatives N 3P3(N P P h3)Cl5_"(NC2H 4)" (n = 1 -5) w hose structures are elucidated by N M R spectroscopy. The X -R ay crystal structure o f N 3P3(NPPh3)(N C 2H 4)5 shows a new conformation o f the — N PPh3 group which would explain the upfield shift o f the aziridino protons at the = P (N C 2H 4)(N P P h3) site. 
  Reference    Z. Naturforsch. 39b, 615 (1984); received O ctober 12/D ecem ber 13 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0615 
 Volume    39 
115Author    GrahamA. Bowm, Cornelia Dörzbach, H. Ubert SchmidbaurxRequires cookie*
 Title    Ein-und Zweielektronen-Oxidation von Phosphor-Yliden mit Kupfer(II)-SaIzen One-and Tw oelectron Oxidation of Phosphorus Ylides Using Copper(II) Salts  
  Reference    Z. Naturforsch. 39b, 618 (1984); eingegangen am 14. D ezem ber 1983 
  Published    1984 
  Keywords    Oxidative Coupling, Phosphorus Y lides, Phosphonium Salts, Copper(II) O xidation, Bis(phosphonium ) Salts 
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 Identifier    ZNB-1984-39b-0618 
 Volume    39 
116Author    Horst Richter, Joachim FuchsRequires cookie*
 Title    Die wahrscheinliche Struktur des gelben Natriumpolymolybdats The Probable Structure of the Yellow Sodium Polymolybdate  
 Abstract    N ovel P olyoctam olybdate, X -R ay, Therm ogravim etry, Vibrational Spectra N a2M o40 13 • 6 H 20 obtainable by the acidification o f sodium m olybdate solutions crystallizes as needles which are constituted of tiny fibers. U nder mild hydrothermal conditions crystal needles can be obtained in which the fibers exhibit a certain order so that a rough structure determination could be carried out by the single crystal m ethod and the m olybdenum positions 
  Reference    Z. Naturforsch. 39b, 623 (1984); eingegangen am 30. N ovem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0623 
 Volume    39 
117Author    H. Ans-D, Hausen Ieter, GiselaW. EcklerRequires cookie*
 Title    Crystal and M olecular Structure of a Com pound Form ed by [4+2]-Cycloaddition from 2-M ethyl-l,3-benzoxaphosphole and Tetrachlor-o-benzoquinone  
 Abstract    [4+2]-C ycloaddition o f Benzoxaphosphole and Q uinone D erivatives, Crystal Structure A crystal structure determ ination proves that the reaction o f 2-m ethyl-l,3-benzoxaphosphole with tetrachlor-o-benzoquinone leads to 6-m ethyl-benzo[h]-tetrachlorobenzo[c]-2,5,7-trioxa-l-phosphabicyclo[4.3.0]nonane via a [4+2]-cycloaddition. The possibility o f an oxidative [4+1]-cycloaddition of the quinone can therefore be excluded. The com pound crystallizes monoclinicly (P 2 ,/c, a = 849.9(1), b = 1009.5(2), c = 1859.4(2) pm, ß = 94.03(1)°, Z = 4). The bicyclicsystem shows c«-configuration. In the crystalline state the endo-conform ation is present. 
  Reference    Z. Naturforsch. 39b, 628 (1984); eingegangen am 28. D ezem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0628 
 Volume    39 
118Author    E. Kkehard Lindner, HartwigR Christoph Auleder, Hermann Scheytt, M. August, WolfgangH. Ayer, Riad Iller, PeterW. Fawzi, EgnerRequires cookie*
 Title    Neuartige basische Liganden für die homogenkatalytische Homologisierung von Methanol zu Ethanol, II [1] Synthese und komplexchemisches Verhalten potentiell zwei-und dreizähniger P —N-und P—O-haltiger Chelatliganden Novel Basic Ligands for the Homogeneous Catalytic Homologation of M ethanol to E thanol. II [1] Synthesis and Complex Chemical Behaviour of Potential Bi-and Tridentate P —N and P —O Containing Chelate Ligands  
 Abstract    Tri-and B identate P —N and P —O Ligands, Com plexes of Cr, M o, Structure o f fr a « s-(0 C)4Cr[CH 3P(C4H 30) 2]:. NM R Spectra 
  Reference    Z. Naturforsch. 39b, 632 (1984); eingegangen am 22. N ovem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0632 
 Volume    39 
119Author    Hans-Friedrich Klein, JoachimG. Roß, H. Ubert, Witty, D. Ietm Ar, N. EugebauerRequires cookie*
 Title    Diolefincobalt(0)-Komplexe Diolefincobalt(O) Complexes  
 Abstract    D iolefinbis(trim ethylphosphane)cobalt(0), Synthesis M ononuclear cobalt(O) com plexes containing diolefin and trim ethylphosphane ligands C o(cycloocta-l,5-d ien e)(P M e3)2 and C o[(C H 2= C H M e2Si)20 ](P M e 3)2 are obtained from CoC l2 
  Reference    Z. Naturforsch. 39b, 643—6 (1984); eingegangen am 8. D ezem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0643 
 Volume    39 
120Author    Rudolf Schierl, Ulrich Nagel, Wolfgang BeckRequires cookie*
 Title    Reaktionen von Übergangsmetall-Verbindungen mit primären Aminen und Schwefelkohlenstoff: Dithiocarbimato-und Dithiocarbamato-Komplexe von Palladium  
 Abstract    , Platin, Nickel, Cobalt und Gold. Röntgenstruktur von (Et3 P)2MS2 CNCH2Ph (M = Pd, Pt) Reactions of Transition Metal C om pounds with Primary Amines and Carbon Disulfide: Dithiocarbim ato and D ithiocarbam ato Complexes of Palladium, Platinum, Nickel, Cobalt and Gold. X-Ray Structure of (E t3P)2MS2CNCFI2Ph (M = Pd, Pt) D ithiocarbim ato, Dithiocarbam ato C om plexes, Palladium (II), Platinum (II), X-Ray A series o f dithiocarbimato com plexes (R 3P)2M (S2C N R ') (1, 2) has been obtained by reaction of (R 3P)2MC12 (M — Pd, Pt) with primary am ines and carbon disulfide. The dithiocarbimato com plexes 1 and 2 can be reversibly protonated to give the dithiocarbamato com pounds (R 3P)2M [S2C N (H)R ']+C r . The X-ray structures o f the dithiocarbim ato com plexes (E t3P)2M (S2C N CH 2Ph) (M = Pd, Pt) have been determ ined and the spectroscopic data (IR , 'H -, 13C-, 1'P-, 19"Pt-NMR) o f the com plex­ es are reported. The dithiocarbam ato com plexes (Ph3P)2M[S2C N (H)C H 2Ph]Cl (M = Co, N i), Ph3P A uS2C N (H)C H 2Ph, Cl2Pt[S2C N (H)C H 2Ph]2 are formed from the corresponding chloro com ­ pounds, primary amine and CS2. 
  Reference    Z. Naturforsch. 39b, 649 (1984); eingegangen am 22. N ovem ber 1983 
  Published    1984 
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 Identifier    ZNB-1984-39b-0649 
 Volume    39 
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