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21Author    K. Burger, S. Penninger, S. TremmelRequires cookie*
 Title    Synthese yon 2.2-Dihydro-1.4.2-diazaphosphol-4-enen [1] Synthesis of 2,2-Dihydro-l,4,2-diazaphosphol-4-enes  
 Abstract    ,4-Bis(trifluoromethyl)-l,3-diazabuta-l,3-dienes below 0 °C react with P(III) com-pounds to give 2,2-dihydro-l,4,2-diazaphosphol-4-enes. IR, X H, 19 F, 31 P NMR, and mass spectra data of the new heterocyclic compounds are discussed. 
  Reference    Z. Naturforsch. 35b, 749—753 (1980); eingegangen am 17. Januar 1980 
  Published    1980 
  Keywords    [4+l]-Cycloaddition Reactions, l, 3-Diazabuta-l, 3-dienes, Phosphorus Compounds, Pentacoordination 4 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0749.pdf 
 Identifier    ZNB-1980-35b-0749 
 Volume    35 
22Author    Egon Fahr, Peter FecherRequires cookie*
 Title    Die Darstellung von 1.3-Dunethyl-6-hydroxy-dihychothymin durch photochemische Wasser-Addition an 1.3-Dimethyl-thymin + Preparation of 1,3-Dimethyl-6-hydroxy-dihydrothymine by Photochemical Addition of Water to l,3-Dimethyl-thymine +  
 Abstract    UV irradiation of aqueous solutions of 1,3-dimethyl-thymine with wavelength > 280 nm yields the eis-and trans-form of water addition product l,3-dimethyl-6-hydroxy-dihydro-thymine (2/3). 
  Reference    Z. Naturforsch. 36b, 226—230 (1981); eingegangen am 16. Juli 1980 
  Published    1981 
  Keywords    UV Irradiation, 1, 3-Dimethyl-thymine, l, 3-Dimethyl-6-hydroxy-dihydro-thymine 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0226.pdf 
 Identifier    ZNB-1981-36b-0226 
 Volume    36 
23Author    Hartmut Köpf, Joachim PickardtRequires cookie*
 Title    Molekül-und Kristallstruktur von 1.1-Dimethylsilylentitanocendichlorid, (CH3)2Si(C5H4)2TiCl2 * Molecular and Crystal Structure of l,r-Dimethylsilylene Titanocene Dichloride, (CH3)2Si(C5H4)2TiCl2  
  Reference    Z. Naturforsch. 36b, 1208—1210 (1981); eingegangen am 4. Mai 1981 
  Published    1981 
  Keywords    [l]-Titanocenophane, l, l'-Dimethylsilylene Titanocene Dichloride, Molecular Structure, X-ray 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1208.pdf 
 Identifier    ZNB-1981-36b-1208 
 Volume    36 
24Author    Detlef GeffkenRequires cookie*
 Title    3-Hydroxy-, 3-Alkoxy-und 3-Amino-2-thioxooxazolidin-4-one aus 6 -Thioxoperhydro -1.5.2-dioxazin -3 -onen 3-Hydroxy-, 3-Alkoxy-and 3-Amino-2-thioxooxazolidine-4-ones from 6-Thioxoperhydro-1,5,2-dioxazine-3-ones  
  Reference    Z. Naturforsch. 38b, 1008—1014 (1983); eingegangen am 5. Mai 1983 
  Published    1983 
  Keywords    Glycolohydroxamic Acids, l, l'-Thiocarbonyldiimidazole, 6-Thioxoperhydro-1, 5, 2-dioxazine-3-ones, Ring Transformation 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1008.pdf 
 Identifier    ZNB-1983-38b-1008 
 Volume    38 
25Author    RainerM. Attes, Bernd FüsserRequires cookie*
 Title    Salze der 1.2-Hydrazin-bis(dithiocarbonsäure): Darstellung, Schwingungsspektren und Struktur Preparation, V ibrational Spectra and Structure of Alkahm etal Salts of the l,2-H ydrazine-bis(dithiocarboxylic Acid)  
 Abstract    The following salts of the l,2-hydrazine-bis(dithiocarboxylic acid) have been prepared: Mi[S->CNH —NHCS^], M = N a, K and M3[S->CN-NHCS2], M — Na, K. In the solvated crystals K2 1S2C N H -N H C S 2 '] • 4 C H 3O H (a = 718.0(5), b = 1329.3(8), c = 937.7(9) pm , ß = 109.26(6)°, space group C2/m , Z = 2) the [S2C N H -N H C S 2]2" ion possesses crystallographic C2h sym metry, i.e. a trans planar structure with a N -N bond length of 139.2(3) pm. V ibrational spectra indicate a lower sym metrical anion in the unsolvated crystals. In the trianion [S2CN —N HCS2]3_ the C —N stretching vibrations are observed at 1400 and 1310 cm" 1. 
  Reference    (Z. Naturforsch. 39b, 1 [1984]; eingegangen am 14. Septem ber 1983) 
  Published    1984 
  Keywords    l, 2-H ydrazine-bis(dithiocarboxylates), Preparation, Crystal Structure, V ibrational Spectra 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0001.pdf 
 Identifier    ZNB-1984-39b-0001 
 Volume    39 
26Author    Thomas Kuhlmann, W. Alter, SiebertRequires cookie*
 Title    Bis  
 Abstract    [(i/3-allyl)nickel(|i,i/5-2,3-dihydro-l,3-diborolyl)]nickeI-Tetradecker-Komplexe mit terminalen Allylliganden [1] Bis[(/;?-allyl)nickel(i/,/;:'-2,3-dihydro-l,3-diborolyl)]nickel T etradecker Complexes with Term inal Allyl Ligands [1] 
  Reference    Z. Naturforsch. 39b, 1046—1049 (1984); eingegangen am 10. März 1984 
  Published    1984 
  Keywords    l, 23, 4, 5-Pentaalkyl-2, 3-dihydro-I, 3-diboroles, Bis(allyl)nickel Tetradecker Complexes 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-1046.pdf 
 Identifier    ZNB-1984-39b-1046 
 Volume    39 
27Author    Requires cookie*
 Title    Imidazolkatalysierte Ringerweiterung von 2-(Diarylmethyl)- und 2-(ArylaIkyI)-l,2-oxazetidin-3-onen zu 4-Oxazolidinonen  
 Abstract    Im idazole-C atalyzed R ing E xpansion of 2-(D iaryIm ethyl)-and 2 -(A ry lalkyl)-l,2-oxazetidin-3-ones to 4-O xazolidinones T hom as L au terb ach und D etlef G effken* 
  Reference    Z. Naturforsch. 41b, 1186—1190 (1986); eingegangen am 27. März 1986 
  Published    1986 
  Keywords    l, 2-Oxazetidin-3-ones, Im idazole 4-Oxazolidinones, N -Substituted Glycolohydroxamic Acids, 1, 1 '-Carbonyldiim idazole 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1186.pdf 
 Identifier    ZNB-1986-41b-1186 
 Volume    41 
28Author    Dieter LentzRequires cookie*
 Title    Cycloadditionsreaktion von Trifluorm ethylisocyanid an Diphenylethin Cycloaddition Reaction o f Trifluoromethyl Isocyanide to Diphenyl Ethyne  
  Reference    Z. Naturforsch. 47b, 148—150 (1992); eingegangen am 8. Juli 1991 
  Published    1992 
  Keywords    Trifluoromethyl Isocyanide, Cycloaddition Reaction, l, 2-Diphenyl-3, 4-bis(trifluoromethylimino)-cyclo-butene Crystal Structure 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0148_n.pdf 
 Identifier    ZNB-1992-47b-0148_n 
 Volume    47 
29Author    RajK. Bansal, Neelam Gandhi, A. Schmidpeter, K. KaraghiosoffRequires cookie*
 Title    Synthesis of [l,2,4,3]Triazaphospholo[l,5-a]pyridines+  
 Abstract    Condensation o f 1,2-diaminopyridinium iodides with tris(dimethylamino)phosphine gives [l,2,4,3]triazaphospholo[l,5-a]pyridines 2a-d. Diethylamine adds to the N=P bond o f 2a, b only if the phosphorus is oxidized at the same time. Hydrolysis of 2 a opens the triazaphos-phole ring at its 2,3-bond. 
  Reference    Z. Naturforsch. 50b, 558 (1995); received October 21 1994 
  Published    1995 
  Keywords    l, 3-Diaza-2-phosphaindolizines, NM R Spectra, Mass Spectral Fragmentation, Hydrolysis, 1, 2-Addition Reactions 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0558.pdf 
 Identifier    ZNB-1995-50b-0558 
 Volume    50 
30Author    M. Ax Herberhold, U. Do Steffl, BerndW. RackmeyerRequires cookie*
 Title    l,3-Distanna-2-phospha-[3]ferrocenophanes -Synthesis, Reactivity and NMR Spectroscopic Properties  
 Abstract    -organo(R)-l,3-distanna-2-phospha-[3]ferrocenophanes [R = Me (2a), rBu (2b), CöH i i (2c), Ph (2d)] and one arsa-analogue 2d(As) were obtained from the reaction of l,l'-bis(chlorodim ethylstannyl)ferrocene 1 with either bis(trimethylsilyl)methylphosphane or the dilithio derivatives, Li2PR and Li^AsPh, respectively. All compounds 2 react with chalco-gens (oxygen, sulfur, selenium) by cleavage of the Sn-P bonds and formation of the known l,3-distanna-2-chalcogena-[3]ferrocenophanes. In contrast, 2d traps pentacarbonylmetal frag­ ments [M(CO)5] to give the stable phosphane complexes [M = Cr (4d), Mo (5d), W (6d)]. The l,l'-bis(diorganophosphanostannyl)ferrocenes [R = fBu (3b), Ph (3d)] were prepared for comparison of NMR data. The ferrocenophanes 2 are fluxional with respect to fast movement of the cyclopentadienyl rings which induces inversion at the pyramidal phosphorus atom. This dynamic process is slow in the cases of 2d(As) and of the pentacarbonyl complexes 4d -6d. All new compounds were characterised by 'H , i3C, 31P and 1 l9Sn NMR spectroscopy. Various 2D heteronuclear shift correlations {e.g. 11P /1H and ll9Sn/'H) were carried out for the com ­ pounds 2 and also for non-cyclic derivatives such as bis(trimethylstannyl)phenvlphosphane and -arsane in order to determine absolute signs of coupling constants [e.g. 7(n S n,''P) > 0 and 2J(] l9Sn,' l7Sn) < 0]. The NM R data suggest that the molecular frameworks of the ferroceno­ phanes 2 are not particularly strained. 
  Reference    (Z. Naturforsch. 54b, 57—62 [1999]; received July 28 1998) 
  Published    1999 
  Keywords    Ferrocene, Tin, Phosphorus, NMR Data, Coupling Signs l, l, 3, 3-Tetramethyl-2 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0057.pdf 
 Identifier    ZNB-1999-54b-0057 
 Volume    54 
31Author    Borislav Bogdanović, Richard Goddard, Peter Göttsch, Carl Krüger, Klaus Schlichte, Yi-Hung TsayRequires cookie*
 Title    7) 3 -Allylmetall-Schwefel-Cluster des Nickels, Palladiums und Platins r/ 3 -Allyl Metal Sulfur Cluster Compounds of Nickel, Palladium, and Platinum  
  Reference    Z. Naturforsch. 34b, 609—613 (1979); eingegangen am 14. Dezember 1978 
  Published    1979 
  Keywords    Trigonal Prismatic Metal Sulfur Cluster, -Allyl Compounds of Ni, Pt, Pd, l, 6, 6a-Trithiapentalene, X-ray 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0609.pdf 
 Identifier    ZNB-1979-34b-0609 
 Volume    34 
32Author    Jacek Bielawski, Kurt Niedenzu, JeanS. StewartRequires cookie*
 Title    Preparation and Characterization of Some Isoelectronic Boron-Nitrogen Analogs of Substituted Uracil [1]  
 Abstract    Several l,3,5-triaza-2-boracyclohexa-4,6-diones, which are isoelectronic analogs of substituted uracil, have been prepared by condensation reactions of boranes with biurets. They include species containing a NH or BH unit as potentially reactive sites. The latter are extremely sensitive to hydrolysis but are readily handled as the 2-methylaminoethanol derivative containing four-coordinate boron. 
  Reference    Z. Naturforsch. 40b, 389—392 (1985); received November 18 1984 
  Published    1985 
  Keywords    Boron-Nitrogen Compounds, Azaborauracils, l, 3, 5-Triaza-2-boracyclohexa-4, 6-diones, Spiroboron Compound, NMR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0389.pdf 
 Identifier    ZNB-1985-40b-0389 
 Volume    40 
33Author    Herbert Fisch, Hans Pritzkow, Walter SiebertRequires cookie*
 Title    Enthalogenierung von Bis(diisopropylamino-chlorboryl)methan: Lösungsmittelabhängige Bildung eines 1,2,4,5-Tetraborinan-und eines l-Aza-2,4-diborolidin-Derivats Dehalogenation of Bis(diisopropylamino-chloroboryl)methane: Solvent-dependent Formation of a 1,2,4,5-Tetraborinane and of a l-Aza-2,4-diborolidine Derivative  
  Reference    Z. Naturforsch. 43b, 658—664 (1988); eingegangen am 7. Dezember 1987 
  Published    1988 
  Keywords    l, 2, 4, 5-Tetrakis(diisopropylamino-chloroboryl)-l, 2, 4, 5-tetraborinane, l-Aza-2, 4-diborolidine Derivatives 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0658.pdf 
 Identifier    ZNB-1988-43b-0658 
 Volume    43 
34Author    IvanS. Alferiev, Sergey Yu, BobkovRequires cookie*
 Title    Cyclic Oligophosphonic Anhydrides Stable in Aqueous Media  
  Reference    Z. Naturforsch. 47b, 1213—1224 (1992) 
  Published    1992 
  Keywords    Amides, Phosphonylation, l-Alkylaminoalkane-l, l, 3, 3-tetrayl-tetrakis-phosphonic Anhydrides, Cyclic Dimeric Anhydrides, l-Aminoalkylidene-l, l-bis-phosphonic Acids 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1213.pdf 
 Identifier    ZNB-1992-47b-1213 
 Volume    47 
35Author    Richard Goddard3, Carl Krüger3, Abdul Ghassan, Karl-Heinz Hadib, Joachim Thieleb, ScholzbRequires cookie*
 Title    Homoleptische 1,4-Diazadienverbindungen elektronenarmer Übergangsmetalle. Synthese, Eigenschaften und Strukturen von (D A D )2Ti und (D A D )3Ti [1] Homoleptic 1,4-Diazadiene Compounds of Early Transition Metals. Syntheses, Properties and Structures of (D A D )2Ti and (D A D )3Ti [1]  
  Reference    Z. Naturforsch. 49b, 519—528 (1994); eingegangen am 13. O ktober 1993 
  Published    1994 
  Keywords    H eterodiene Titanium Complexes, l, 4-D iaza-l, 3-diene, Endiam ide Structure, 7i-A cceptor Ligand 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0519.pdf 
 Identifier    ZNB-1994-49b-0519 
 Volume    49 
36Author    G. Ernot, Heckm Ann3, Stefan Planka, Ekke­ Hard Fluckb, Dashti-M Anahita, Bernhard Ommertzc, NeumüllercRequires cookie*
 Title    6-Pyridyl-l-aza-2A5,4/.5-diphosphinin - ein 2,2'-Bipyridin-Analogon 6-Pyridyl-l-aza-2/l5,4/l5-diphosphinine - a 2,2'-Bipyridine Analogue  
 Abstract    -Tetrakis(dimethylamino)-lA5,3A5-diphos-phete, (1), reacts with 2-cyano-pyridine to yield 6-pyridyl-l-aza-2/l5,4A5-diphosphinine (3). 3 is cha­ racterized by its 'H , 31P, and 13C NMR, mass, and IR spectra as well as the results of the X-ray struc­ ture analysis. 
  Reference    Z. Naturforsch. 54b, 1478—1481 (1999); eingegangen am 23. August 1999 
  Published    1999 
  Keywords    A5-Diphosphete, l-Aza-2A5, 4A5-diphosphinine, NMR D ata, Crystal Structure l, l, 3, 3 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1478_n.pdf 
 Identifier    ZNB-1999-54b-1478_n 
 Volume    54 
37Author    Helga Wittmann, Hossein Taleban, Reinhard HerzogRequires cookie*
 Title    Synthesen von Heterocyclen, 199 1 Spiro-lactone aus 1.2.3-Trioxo-2.3-dihydro-phenalen sowie 2.3.4-Trioxo- und Anthranilsäure The Chemistry of Vicinal Triketones, VIII 1 Spiro Lactones from l,2,3-Trioxo-2,3-dihydro-phenalene and 2,3,4-Trioxo-l,2,3,4-tetrahydro-quinolines with Anthranilic Acid  
 Abstract    l,2,3-Trioxo-2,3-dihydro-phenalene (PT) and l,2,3-trioxo-2,3,6,7-tetrahydro-l H, 5H- benzo[ij]quinolizine (TMCHi) react with anthranilic acid (AS) primarily to give the spirolactones la-lb, which are thermically rearranged to the corresponding benzoxazine carboxylic acids 2 a - 2 b . l-phenyl-2,3,4-trioxo-l,2,3,4-tetrahydro-quinoline (PHCHi) reacts with AS yielding the spirolactone 1 c, which decomposes upon heating. 
  Reference    (Z. Naturforsch. 31b, 1407—1409 [1976]; eingegangen am 5. Juli 1976) 
  Published    1976 
  Keywords    Anthranilic Acid, l, 2, 3-Trioxo-2, 3-dihydro-phenalene, 2, 3, 4-Trioxo-l, 2, 3, 4-tetrahydro-quinoline, Spirolactone, Benzoxazine Carboxylic Acid 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1407.pdf 
 Identifier    ZNB-1976-31b-1407 
 Volume    31 
38Author    Marianne Baudler, Anna Marx, Josef HahnRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 80 [1] Über die Phosphor-Bor-Dreiringverbindung (f-BuP)2BN(i-Pr)2 Contributions to the Chemistry of Phosphorus, 80 [1] About the Phosphorus Boron Three-Membered Ring Compound (£-BuP)2BN(i-Pr)2  
  Reference    Z. Naturforsch. 33b, 355—360 (1978); eingegangen am 18. Januar 1978 
  Published    1978 
  Keywords    l, 2-Di-£e^butyl-3-di-iso-propylamino-l, 2, 3-diphosphaborirane, Heterocyclophosphanes, Three-membered Ring Compounds, Cyclo-3-bora-l, 2-diphosphanes, Diphosphaboracyclopropanes 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0355.pdf 
 Identifier    ZNB-1978-33b-0355 
 Volume    33 
39Author    Franz Dallacker, Bodo Holtmann, Wim CoerverRequires cookie*
 Title    Derivate des 1.3-BenzdioxoIs, 48 [1] Darstellung und Reaktionen von substituierten 1.3-Benzdioxol-4.7-cliinonen Derivatives of 1,3-Benzdioxoles, 48 [1] Preparation and Reactions of l,3-Benzdioxole-4,7-quinones  
  Reference    Z. Naturforsch. 38b, 392—397 (1983); eingegangen am 6. Oktober 1982 
  Published    1983 
  Keywords    l, 3-Benzdioxol-4, 7-chinon, 6, 7-Dimethyl-naphtho[2, 3-d]-l, 3-dioxol-4, 9-chinon, 6-Hydroxy-naphtho[2, 3-d]-l, 3-dioxol-4, 9-chinon 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0392.pdf 
 Identifier    ZNB-1983-38b-0392 
 Volume    38 
40Author    E. Hanecker, H. NöthRequires cookie*
 Title    Beiträge zur Chemie des Bors, 163 [1] Die Molekülstruktur zweier Silaborazine Contributions to the Chemistry of Boron, 163 [1] The Molecular Structure of Two Silaborazines  
  Reference    Z. Naturforsch. 40b, 717—721 (1985); eingegangen am 4. Januar 1985 
  Published    1985 
  Keywords    2, 3, 4, 5, 6-Pentamethyl-l, l-diphenyl-l-silaborazine, 2, 4, 5, 6-Tetramethyl-l, l, 3, 3-tetraphenyl-l, 3-disilaborazine, X-Ray Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0717.pdf 
 Identifier    ZNB-1985-40b-0717 
 Volume    40