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1982 (310)
21Author    M. Herrmann, H. Parlar, F. KörteRequires cookie*
 Title    Ein Beitrag zur photoinduzierten Desaminierung substituierter 1.2.4-Triazinone A Contribution to the Photoinduced Desamination of 1,2,4-Triazinones  
 Abstract    Photochemical Reactivity, Desamination, l,2,4-Triazin-5(4H)-ones Solution-phase photoreactions of 4-amino-substituted l,2,4-triazin-5(4H)-ones (la-J) in different solvents using UV light with wave-lengths greater than 290 nm have been in-vestigated. The results show, that the desamina-tion reaction is influenced by both oxygen and water. The photoexperiments showed clearly that OOH-radicals take part in the first step of reaction. 
  Reference    (Z. Naturforsch. 37b, 117—118 [1982]; eingegangen am 6. August 1981) 
  Published    1982 
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 Identifier    ZNB-1982-37b-0117_n 
 Volume    37 
22Author    Ursula Frank-Cordier, Gerhard Cordier, Herbert SchäferRequires cookie*
 Title    Die Struktur des Na7Ga13-I und ein Konzept zur bindungsmäßigen Deutung The Structure of NavGai3-I and its Characterization by a Bonding Scheme  
 Abstract    The new compound NayGa^-I crystallizes in the trigonal-rhombohedral system, space group R 3 m, with the constants a = 1496.5(3) pm, c = 3893(1) pm, c/o = 2.60. The Ga atoms form Gai2 icosahedra and Gais clusters, connected to a threedimensional net. The arrangement of these clusters is related to the MgCu2 structure. The Na content of this compound correlates with the number of electrons necessary for a stable electron configuration in the Ga partial structure. The BaAl4 type structure of NaGa4 has been confirmed by single crystal data. 
  Reference    (Z. Naturforsch. 37b, 119—126 [1982]; eingegangen am 5. Oktober 1981) 
  Published    1982 
  Keywords    Natrium Gallides, Crystal Structure, Bonding Scheme 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0119.pdf 
 Identifier    ZNB-1982-37b-0119 
 Volume    37 
23Author    Ursula Frank-Cordier, Gerhard Cordier, Herbert SchäferRequires cookie*
 Title    Neue Ga-Cluster-Verbände im Na7Ga13-II New Ga-Cluster Compounds: The Structure of Na7Gai3-II  
 Abstract    Na7Gai3-II crystallizes in the orthorhombic system, space group Pnma with the con-stants a -1562.5(3) pm, b = 1497.9(3) pm, c = 2167.8(4) pm. The Ga-atoms form Gaj.2 icosahedra and Gais clusters connected to a threedimensional network. The centres of these clusters correspond to the atomic positions of the MgCu2 structure. The number of bonding electrons is related to the Na content of the compound. 
  Reference    (Z. Naturforsch. 37b, 127—135 [1982]; eingegangen am 5. Oktober 1981) 
  Published    1982 
  Keywords    Natrium Gallides, Crystal Structure, Bonding Scheme 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0127.pdf 
 Identifier    ZNB-1982-37b-0127 
 Volume    37 
24Author    Doris Bodenstein, Axel Brehm, PeterG. Jones, Einhard Schwarzmann, GeorgeM. SheldrickRequires cookie*
 Title    Darstellung und Kristallstruktur von Arsen(III)phosplior(V)oxid, AsP04 Preparation and Crystal Structure of Arsenic(III) Phosphorus(V) Oxide, AsP04  
 Abstract    The compound ASPO4 was prepared from AS2O3 and P2O5 in a sealed tube at 673 K. The crystal structure, isostructural with As02, was refined to R = 0.021 [Pnma, a — 843.15(10), b = 502.29(10), c = 720.39(12) pm, Z = 4]. The structure consists of infinite layers. The arsenic(III) atoms are coordinated by three oxygen atoms at right angles; phosphorus(V) by four oxygens in the form of a distorted tetrahedron. 
  Reference    Z. Naturforsch. 37b, 136—137 (1982); eingegangen am 7. Oktober 1981 
  Published    1982 
  Keywords    Sealed-tube Synthesis, Crystal Structure, Arsenic(III), Phosphorus(V) 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0136.pdf 
 Identifier    ZNB-1982-37b-0136 
 Volume    37 
25Author    Doris Bodenstein, Axel Brehm, PeterG. Jones, Einhard Schwarzmann, GeorgeM. SheldrickRequires cookie*
 Title    Darstellung und Kristallstruktur vom Arsen(III)arsen(V)oxidhydroxid As305(0H) Preparation and Crystal Structure of the Arsenic(III) Arsenic(V) Oxide Hydroxide As305(0H)  
 Abstract    The title compound was prepared by heating the hydrolysis products of AS2O4 in a sealed tube. The crystal structure was determined and refined to R = 0.058 [P2j./c, a = 1250.4(6), b = 459.3(2), c = 1097.6(6) pm, ß = 118.08(5)°, Z = 4]. The structure consists of infinite layers, containing pyramidal As(III)03 and tetrahedral As(V)04 groups, and stabilised by hydrogen bonding. 
  Reference    Z. Naturforsch. 37b, 138—140 (1982); eingegangen am 7. Oktober 1981 
  Published    1982 
  Keywords    Sealed-Tube Synthesis, Crystal Structure, Arsenic, Oxide 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0138.pdf 
 Identifier    ZNB-1982-37b-0138 
 Volume    37 
26Author    PeterG. Jones, Corneha Lensch, GeorgeM. SheldrickRequires cookie*
 Title    Kristallstruktur der sulfidverbrückten Gold(I)verbindung [Au{S(AuPPh3)2}2] + [(CH3)3SnCl2] — Crystal Structure of the Sulphide-bridged Gold(I) Complex [Au{ S(AuPPh3)2}2] + [(CH3)3SnCl2]  
 Abstract    Crystal Structure, Gold(I), Bridging Sulphide Ligand, Five-coordinate Tin(IV) The compound [Au{S(AuPPh3)2}2] + [(CH3)3SnCl2]-was prepared by the reaction of Ph3PAuCl with ((CH3)3Sn)2S and characterised by an X-ray structure determination [C2/c, a = 1713.4(5), b = 2996.7(12), c = 3081.7(12) pm, ß = 102.40(3)°, Z = 8, R = 0.074]. The cation displays short Au • • • Au contacts and narrow Au-S-Au angles (< 90°). The chlorine atoms of the anion are axially arranged. There are two independent anions, one lying on, and the other disordered about, the crystallographic twofold axes. 
  Reference    Z. Naturforsch. 37b, 141—143 (1982); eingegangen am 8. Oktober 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0141 
 Volume    37 
27Author    FrankH. Köhler, KarlH. DollRequires cookie*
 Title    NMR-Spektroskopie an paramagnetischen Komplexen, XXVII [1] Paramagnetische  
 Abstract    Octamethylmetallocenes, Paramagnetic 1 H/ 13 C NMR The tetramethylated cyclopentadienyl anion has been prepared from tiglinic acid and reacted with solvated metal(II) chlorides to give new octamethylmetallocenes (Me-jcp^M. For M = V, Cr, Co and Ni the paramagnetic 1 H and 13 C spectra have been recorded. The NMR data prove the molecular structure and show that all methyl groups rotate almost freely. The methyl proton resonance of the nickelocene may serve as a probe for the adjustment of metallocene properties by ring substitution. Based on qualitative MO arguments the correlation of electron spin densities and paramagnetic shifts lead to an understanding of the signal splitting of cobaltocenes. From the electronic point of view the octamethylmetallocenes may be regarded as being in vers to l,l'-dimethylmetallocenes. 
  Reference    Z. Naturforsch. 37b, 144—150 (1982); eingegangen am 19. Oktober 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0144 
 Volume    37 
28Author    Rüdiger Kniep, HorstDieter ReskiRequires cookie*
 Title    Phasenbeziehungen im System As2Te3—Asl3 und die Kristallstruktur von As5Te7I Phase Relations in the System As2Te3-Asl3 and the Crystal Structure of AssTe7l  
 Abstract    The system As2Te3-Asl3 is quasibinary and includes the intermediate phases AssTe7l and a-AsTel with incongruent melting behaviour. The crystal structure of AssTe7l contains ribbons of condensed octahedral chains sharing common edges. Arsenic atoms are situated in the centres of the octahedra and -in a trigonal-pyramidal arrangement -at the borders of the ribbons. There are close relationships between the crystal structures of As2Te3 and AssTe7l as well as As5Te7I and a-AsTel. The particular expansion of the AsöTe7l one-phase region within the quasibinary system is discussed with respect to these structural relations. 
  Reference    Z. Naturforsch. 37b, 151—156 (1982); eingegangen am 24. August 1981 
  Published    1982 
  Keywords    Telluroiodides of Arsenic, Phase Relations, Crystal Structure 
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 Identifier    ZNB-1982-37b-0151 
 Volume    37 
29Author    Franz Oberdorfer, Barbara Baibach, ManfredL. ZieglerRequires cookie*
 Title    Photonitrosylierung  
 Abstract    von Re2(CO)10 in Gegenwart von Olefinen; Röntgenstrukturanalysen von Re3(C0)14N02 und Re3(CO)14COOH Photonitrosylation of Re2(CO)io in the Presence of Olefines; X-ray Structure Determination of Re3(C0)i4N02 and Re3(CO)i4COOH Photonitrosylation, ^-Complexes of Rhenium Carbonyl The photochemically induced reactions of Re2(CO)io were carried out in tetrahydrofuran solution in the presence of NO, cyclooctatetraene and 1,3-butadiene. Re3(C0)i4N02 and Re3(C0)i50H could be isolated from the reaction with NO. UV irradiation of mixtures of the carbonyl with cyclooctatetraene or 1,3-butadiene yielded the 2,5-dihydrofuran-Re2(CO)8 complex. Cyclooctatetraene is cleaved in this reaction, generating two 1,3-butadiene fragments. The known dimeric Re(CO)4-jU-(?? 2 :77 2 C4H6)Re(CO)4 was obtained by trapping the butadiene molecules through coordination. The compounds Re3(C0)i4N02 and Re3(CO)iöOH have been characterized by X-ray structure analysis. 
  Reference    Z. Naturforsch. 37b, 157—167 (1982); eingegangen am 18. September 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0157 
 Volume    37 
30Author    Lanthan, Holmium, Erbium, ThuliumUnd Lutetium, Herbert Schumann, Georg-Michael FrischRequires cookie*
 Title    Metallorganische Verbindungen der Lanthanoiden, XTTT [1] Tris(di-f-butylarsin)-Derivate von Yttrium  
 Abstract    Lithium (di -butyl) arsenide reacts with the trichlorides of yttrium, lanthanum, praseodymium, holmium, erbium, thulium, and lutetium under elimination of lithium chloride and formation of the corresponding tris(di-f-butylarsine) derivatives. 
  Reference    Z. Naturforsch. 37b, 168—171 (1982); eingegangen am 5. Juni 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0168 
 Volume    37 
31Author    Karl SchlosserRequires cookie*
 Title    Photochemisches Verhalten von Bis(trifluormethylthiyl)trithiocarbonat in Lösung Photochemical Behaviour of Bis(trifluoromethylthiyl)trithiocarbonate in Solution  
 Abstract    Bis(trifluoromethylthiyl)trithiocarbonate, Electronic Spectra, Photochemical Behaviour, Tris(trifluoromethylthiyl)methyl Radical Bis(trifluoromethylthiyl)trithiocarbonate shows electronic transitions at 496 nm (nn*), 299 nm {nn*) and 259 (ntr*). Photolysis with 254 and 300 nm light at 200 and 309 K in pentane, and at 371 K in heptane yields a mixture of CS2 and perfluorinated compounds such as F3CSCF3, F3CSSCF3, (F3CS)3C-C(SCF3)3, (F3CS)2C=C(SCF3)2, (F3CS)3CH and F3CS-substituted solvent. The concentration of these newly formed products versus time of irradiation has been monitored. The primary photochemical process is the intra-molecular decomposition into CS2 and F3CS -and F3O radicals which dimerize in a solvent cage. The formation of (F3CS)3C-C(SCF3)3 is interpreted in terms of a competition between this combination process and trapping of trifluoromethyl radicals by (FsCS^CS, forming (F3CS)3C-, which subsequently dimerizes. On irradiation at 496 nm (n n*) no photo-chemical process has been observed. 
  Reference    Z. Naturforsch. 37b, 172—178 (1982); eingegangen am 8. September 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0172 
 Volume    37 
32Author    JaapN. Louwen, Jaap Hart, DerkJ. Stufkens, Ad OskamRequires cookie*
 Title    The Hei and HeH Photoelectron Spectra of [Fe*? 3 -C3H5(CO)3X] and [Fe^ 3 -C4H7 (CO)3X] (X = Cl, Br, I) and [CoC3H5(CO)3]  
 Abstract    By means of UV photoelectron spectroscopy (UPS) the electronic structures of [Fe^3.C3H5(CO)3X], [Fe^3-(2-CH3C3H4)(CO)3X] (X = Cl, Br, I) and [Co(C3H5)(CO)3] have been studied. Detailed assignments are possible and surprisingly low ionization energies (as low as 8.19 eV) are found for iodine lone pair type Orbitals. From the spectra a large difference in n backbonding is found between the cobalt and iron complexes. 
  Reference    Z. Naturforsch. 37b, 179—185 (1982); received September 29 1981 
  Published    1982 
  Keywords    Photoelectron Spectra, Iron, Cobalt, Allyl Complexes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0179.pdf 
 Identifier    ZNB-1982-37b-0179 
 Volume    37 
33Author    HansH. Karsch, Ulrich SchubertRequires cookie*
 Title    Komplexe mit alkylsubstituierten Phosphinomethanen und -methaniden, III [1] Strukturchemie dreigliedriger Brückenliganden, III [2] Bis(dimethylphosphino)metlian als Brückenligand in einem dimeren Ag(I)-Komplex Complexes with Alkyl Substituted Phosphinomethanes and -methanides, III [1] Structural Chemistry of Three-membered Bridging Ligands, III [2] Bis(dimethylphosphino)methane as a Bridging Ligand in a Dimeric Ag(I) Complex  
 Abstract    Eight Membered Heterocycle, Bis(dimethylphosphino)methan-Ag Complex, X-ray [(Me2PCH2PMe2)]2Ag2](PFe)2 has been prepared and characterized by an X-ray struc-ture analysis. It crystallizes in the space group Pbca with a — 1117(1), b = 1768(5) and c = 1315(2). The dication forms an eight membered centrosymmetric ring, the Ag and P atoms being nearly coplanar. Ag-Ag* 304.1(2) pm. The structure is compared with that of the free ligand [15] and of an analogous Ph2PCH2PPh2 complex of Au(I) [9]. 
  Reference    Z. Naturforsch. 37b, 186—189 (1982); eingegangen am 13. Oktober 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0186 
 Volume    37 
34Author    Udo Engelhardt, Ingeborg KirnerRequires cookie*
 Title    TricUonnethylphosphonsäuredihydrazid  
 Abstract    und 3.6-Bi8(trichlormethyl)-3.6-dioxo-1.2.4.5-tetraaza-3.6-diphosphacyclohexan Trichloromethylphosphonic Acid Dihydrazide and 3,6-Bis(trichloromethyl)-3,6-dioxo-l,2,4,5-tetraaza-3,6-diphosphacyclohexane Inorganic Phosphorus Hydrazine Heterocycle The title compounds are prepared from trichloromethylphosphonic acid dichloride and excess hydrazine hydrate, and from the dihydrazide and the dichloride in the presence of triethylamine, resp. They are characterized by elemental analysis, mass spectra, 1 H and 31 P NMR spectra, IR and Raman data. Thin layer chromatographic experiments show that in the raw material of the ring compound two isomers (probably eis-and trans-) are present, whereas in the recrystallized product only one isomer can be detected. Attempts of a preparative separation of isomers were unsuccessfull so far due to very low concentra-tions of the product with the slightly higher Rf. Single crystals of the isolated ring com-pound decompose on irradiation with X-rays. Einführung 
  Reference    Z. Naturforsch. 37b, 190—194 (1982); eingegangen am 9. Oktober 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0190 
 Volume    37 
35Author    Dietmar SchomburgRequires cookie*
 Title    Strukturchemie von Verbindungen des pentakoordinierten Siliciums. Das Bis(ethylendioxy)methylsilan-Anion Structural Studies of Pentacoordinate Silicon. The Bis(ethylenedioxy)methylsilane Anion  
 Abstract    Molecular Structure, Spirocyclic Pentacoordinate Silicon Hexamethylendiammonium-bis(ethylenedioxy)methylsilane crystallizes in the hexago-nal space group P6i22, Z = 6 with a= 11.902(1), c = 30.148(4) A. The structure was refined to R — 0.041 using 2281 independent reflections. The geometry around the penta-coordinate silicon atom is between a trigonal bipyramid and a square pyramid. Oeq-Si-Oeq 136.0(1)°, Oax-Si-Oax 161.7(1)°. The Si-Oax bond lengths are 1.749(2) and 1.769(2) A, the Si-Oeq 1.711(2) and 1.735(2) A, Si-Ceq 1.876(3) A. The compound forms strong N-H • • • O hydrogen bonds between cation and anion. The cation lies on a crystallographic twofold axis. 
  Reference    Z. Naturforsch. 37b, 195—197 (1982); eingegangen am 18. September 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0195 
 Volume    37 
36Author    Ulrich Müller, Hans-Dieter DörnerRequires cookie*
 Title    Eine neue Synthese, das Schwingungsspektrum und die Kristallstruktur von Tetraphenylarsonium-hydrogendichlorid As(C6H5)4 [C12H] A New Synthesis, the Vibrational Spectrum and the Crystal Structure of Tetraphenylarsonium Hydrogendichloride AsfCeHsMC^H]  
 Abstract    As(C6H 5)4 + [Cl2H]-crystallizes in the monoclinic space group B2/b with four formula units per unit cell, the lattice constants being a— 1704, 6= 1751, c — 705 pm and y = 92.73°. The crystal structure was determined and refined from X-ray diffraction data to a residual index of R = 0.043. The CI2H-ion is situated on an inversion center with a C1---C1 distance of 309 pm. The IR and Raman spectra confirm the presence of sym-metrical CI2H -ions; the observed splitting of IR bands can be explained by factor group analysis. A simple procedure for the preparation consists of the reaction of HCl with As(C6H 5)4Cl. 
  Reference    Z. Naturforsch. 37b, 198—200 (1982); eingegangen am 1. Oktober 1981 
  Published    1982 
  Keywords    Tetraphenylarsonium Hydrogendichloride, Synthesis, Crystal Structure, Raman Spectra, IR Spectra 
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 Identifier    ZNB-1982-37b-0198 
 Volume    37 
37Author    Hartmut Menzel, WolfPeter Fehlhammer, Wolfgang BeckRequires cookie*
 Title    Anchoring of Metal Carbonyls on Poly Isocyanides [1]  
 Abstract    Polyisocyanides with the groups -CH2N = C and -C(0)0(CH2)2N = C attached to poly-styrene have been prepared and reacted with various metal carbonyl compounds resulting in the fixation on the polymeric supports of -M(CO)s, -M(CO)4 (M = Cr, Mo, W), -MO(C1)(J?-C5H5)(C0)2, -Mn2(CO)", -Mn(CO)"X (N = 3, 4; X = Cl, Br), -Fe(CO)4, -Fe3(CO)u, -FeI2(CO)2, -FeX(^-C5H5)(CO) (X = Cl, Br, I), -Ru(CO)4, -Ru3(CO)9, ,,-Os3H2(CO)io", and -RhCl(CO)2. The cyano complexes [Fe(CN)2(f?-C5H5)CO]-and [Mo(CN)2(f?-C5H5)(CO)2]-have been immobilized by alkylation with chloromethylated polystyrene. 
  Reference    Z. Naturforsch. 37b, 201—208 (1982); eingegangen am 1. Oktober 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0201 
 Volume    37 
38Author    Werner Kruppa, Dieter Bläser, Roland Boese, Günter SchmidRequires cookie*
 Title    Heteronucleare Clustersysteme, XX [1] ^3-Bi8mutio-cyclo-tris(tricarbonyliridium) (3 Ir-Ir), BiIr3(CO)9 Darstellung und Strukturuntersuehung eines neuartigen Iridiumclusters Heteronuclear Cluster Systems, XX [1] iM3-Bismutio-cyclo-tris(tricarbonyliridium)(3Ir-Ir), BiIr3(C0)g - Synthesis and Structural Investigation of a Novel Iridium Cluster  
 Abstract    The synthesis of BiIr3(CO)9 is described. IR and mass spectroscopic data are discussed. The structure of BiIr3(CO)9 was solved by X-ray analysis. The structural data are discussed and compared with those of the related compounds Ir4(CO)i2 and Bi[Co(CO)4]3, respec-tively. 
  Reference    Z. Naturforsch. 37b, 209—213 (1982); eingegangen am 29. September 1981 
  Published    1982 
  Keywords    Iridium Cluster, Bismuth Cluster, Synthesis, X-ray 
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 Identifier    ZNB-1982-37b-0209 
 Volume    37 
39Author    K. Schwochau, L. Astheimer, H.-J Schenk, E. G. WitteRequires cookie*
 Title    On the Extraction of Uranium from Sea Water by a Complexing Resin Uranium Recovery from Sea Water, Sorbents Accumulating Uranium, Uranium Uptake and Elution  
 Abstract    A cross-linked polyacryl resin containing amidoxime or related functional groups is capable of concentrating uranium from natural sea water. The resin presents a uranium loading of more than 3000 ppm; moreover it has a higher selectivity, uptake rate, and attrition stability than hydrous titanium oxide. 
  Reference    Z. Naturforsch. 37b, 214—216 (1982); received October 21 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0214 
 Volume    37 
40Author    Tony Debaerdemaeker, Willy FriedrichsenRequires cookie*
 Title    Mesoionische Sechsringheterocyclen, IV [1]; Struktur des 2-Ferrocenyl-3.5-diphenyl-6-oxo-6H-1.3-oxazin-3-ium-4-olats Mesoionic Six-Membered Heterocycles, IV [1] Structure of 2-Ferrocenyl-3,5-chphenyl-6-oxo-6H-l,3-oxazine-3-ium-4-olat  
 Abstract    Mesoionic 4,6-dioxo-l,3-oxazine, X-ray The structure of the title compound has been determined by X-ray crystallography. Ferrocenyl-Carbokationen [2] des Typs 1 (Fe = Ferrocenyl) sind -aus offensichtlich im einzelnen noch ungeklärten Gründen [2, 3] -sehr stabil [4]. Es liegt nun nahe, die Stabilität und Reaktivität solcher Verbindungen zu untersuchen, in denen der Ferrocenylrest an einem formal positiv geladenen C-Atom eines neutralen Restes gebunden ist; dies ist bei mesoionischen Fünf-und Sechsringhetero-cyclen (Beispiele: 2, 3) der Fall. Während mittler-weile eine große Zahl mesoionischer Verbindungen bekannt geworden ist [5-7], wurde bislang nur ein metallocenylsubstituierter Vertreter dieser Sub-stanzklasse, die Verbindung 4, beschrieben [8, 9]. Über die Struktur von 4 wird in dieser Arbeit be-richtet. Fe—^ 1 Fe R 1 0 A. Strukturermittlung 
  Reference    Z. Naturforsch. 37b, 217—221 (1982); eingegangen am 10. Juli 1981 
  Published    1982 
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 Identifier    ZNB-1982-37b-0217 
 Volume    37 
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