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1994[X]
21Author    Nikolaus Risch3, BerndM. Eyer-Roscherb, M. Aria LanghalsbRequires cookie*
 Title    3.5-Di-terf-butylstyroIe: Synthese sterisch anspruchsvoller Polymerbausteine 3.5-Di-terf-butylstyrenes: Synthesis of Bulky Polymer Building Blocks  
 Abstract    We report the synthesis of 3,5-di-terf-butyl-styrene (5). The alkylation of toluene with tert-butylchloride establishes the 1,3,5-substitution pattern. A Wittig reaction introduces the Ct unit. This and similar bulky styrene derivatives will be used as special building blocks for polymer design. 
  Reference    Z. Naturforsch. 49b, 141—144 (1994); eingegangen am 23. August 1993 3. 
  Published    1994 
  Keywords    5-Di-terf-butylstyrenes, Bulky Polystyrene Monomers, L H NMR Spectra 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0141_n.pdf 
 Identifier    ZNB-1994-49b-0141_n 
 Volume    49 
22Author    Michael Farkens, ThomasG. Meyer, Ion Neda, R.Alf Sonnenburg, Christian Müller, AxelK. Fischer, PeterG. Jones, Reinhard SchmutzlerRequires cookie*
 Title    Zur Chemie der l,3,5-Triaza-2-phosphinan-4,6-dione. Teil VI*. Darstellung von l,3>5-Triaza-2 A3  
 Abstract    , l,3,5-Triaza-2 A4-und 1,3,5-T riaza-2 A5-phosphinan-4,6-dionen Chemistry o f the l,3,5-Triaza-2-phosphinane-4,6-diones. Part VI. Synthesis o f l,3,5-Triaza-2^3-, 1,3,5-Triaza-2A4-and l,3,5-Triaza-225-phosphinane-4,6-diones The reactions o f 1,3,5-trimethylbiuret with dicyclohexylam inodichlorophosphine and with pyrrolidinodichlorophosphine furnished the triazaphosphinane-diones 1 and 2. Oxidation 
  Reference    Z. Naturforsch. 49b, 145—164 (1994); eingegangen am 29. Juli 1993 
  Published    1994 
  Keywords    1, 3, 5-Triorgano-Substituted l, 3, 5-Triaza-2-phosphinan-4, 6-diones, Oxidation Reactions, N M R Spectra, M ass Spectra, X -R ay 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0145.pdf 
 Identifier    ZNB-1994-49b-0145 
 Volume    49 
23Author    Requires cookie*
 Title    Zur Chemie der l,3,5-Triaza-2-phosphorinan-4,6-dione. Teil VIF. Über die Synthese von 2-Methoxy-und 2-Trimethylsiloxy-l,3,5-trimethyI- 1.3.5-triaza-2A3-phosphorinan-4,6-dion sowie 2-Chlor-l,3,5-trimethyl- 1.3.5-triaza-2-oxo-2A4-phosphorinan-4,6-dion  
  Reference    Z. Naturforsch. 49b, 165 (1994) 
  Published    1994 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0165.pdf 
 Identifier    ZNB-1994-49b-0165 
 Volume    49 
24Author    Ion Neda, Thomas Kaukorat, Reinhard SchmutzlerRequires cookie*
 Title    Umsetzungen von 2-chlor-und 2-organoaminosubstituierten 5.6-Benzo-l,3-dimethyl-l,3>2-diazaphosphorinan-4-onen mit Aziden R eactions of 2-Chloro-and 2-Organoamino-Substituted 5.6-Benzo-l,3-dimethyl-l,3,2-diazaphosphorinane-4-ones with Azides  
 Abstract    1.3.2-Triorgano-Substituted 5,6-Benzodiazaphosphorinane-4-ones, Cyclotriphosphazene, Staudinger Reaction, Intramolecular C=0 — H Interaction The reaction of 5,6-benzo-2-chloro-l,3-dimethyl-l,3,2-diazaphosphorinane-4-one (1) with trimethylsilyl azide led to the substituted cyclotriphosphazene (3). A monomeric reaction product was not observed by NMR spectroscopy. The diazaphosphorinane 2, with the 2-chloroethyl substituent bonded to the nitrogen atom in a-position to the carbonyl group, did not react with trimethylsilyl azide. An attempt to prepare 3 from N,N'-dimethylanthranil-amide 5 and hexachlorocyclotriphosphazene 4 failed, as did the attempt to react 5 with phos­ phorus pentachloride. The reaction of 5,6-benzo-2-{bis(2-chloroethyl)amino}-l,3-dimethyl-1.3.2-diazaphosphorinane-4-one (7) and of the related compound 9, bearing only one 2-chloroethyl substituent, with 4-nitrobenzoyl azide furnished, in a normal Staudinger fashion, the monomeric products 8 and 10. In the case of 10, intramolecular P=0 — H inter­ action was demonstrated by IR spectroscopy. 
  Reference    Z. Naturforsch. 49b, 171—175 (1994); eingegangen am 16. August 1993 
  Published    1994 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0171.pdf 
 Identifier    ZNB-1994-49b-0171 
 Volume    49 
25Author    Angelika Sundheim, Christiane Theers, Rainer MattesRequires cookie*
 Title    Derivate des Hydrazins als Liganden in Vanadium(III)  
 Abstract    , -(IV)-und -(V)-Komplexen. Darstellung und Charakterisierung von [V(dipic)(NH2NHC0Ph)(H20) 2][Y0(dipic)(NHNC0Ph)]*2H20 , [YO(dipic) (NHNHC02Me)], [VO (dipic) (NH2NHCOzMe)], [VO(dipic)(NHNHCSPh)] und [VO('ONO')(NHNHCOPh)] 2H 20 Substituted Hydrazines as Ligands in Vanadium (III), -(IV) and -(V) Complexes. Synthesis and Characterization of [V(dipic)(NH2N H C 0Ph)(H 20) 2][V0(dipic)(NHNC0Ph)] • 2H 20 , [V0(dipic)(NH NHC02Me)], [V0(dipic)(NH2N H C 0 2Me)], [VO(dipic)(NHNHCSPh)] und [VO ('O N O ')(N H N H CO Ph)]-2H 20 Benzolhydrazine Complexes of Vanadium(III) and -(V), Methylcarbazate Complexes of Vanadium(IV) and -(V), Thiobenzoylhydrazine Complexes of Vanadium(V), Crystal Structure The reaction of [VO (dipic) (H20) 2] -2H20 with benzoylhydrazine, thiobenzoylhydrazine and O-methylcarbazate yields [V(dipic)(NH2NHC0Ph)(H20) 2][V0(dipic)(NHNC0Ph) • 2H20 (1), [V0(dipic)(NHNHC02Me)] (2), [V0(dipic)(NH2N HC02Me)] (3) and [VO(dipic)(NHNHCSPh)] (4). 1 is probably formed in solution by redox disproportionati-on. The reactions giving 2,3 and 4 also involve redox processes with atmospheric oxygen as oxidant and the respective hydrazine as reductant. [VO('ONO')(NHNHCOPh)]-H20 (5) was formed using aqua-oxo-salicylaldehyde-L-alaninato-vanadium(IV) as precursor. The structures of 1,2,3 and 5 have been determined by single crystal X-ray crystallography. The cation of 1 has a seven-coordinated vanadium(III) center with the two HzO molecules at the apices of a pentagonal bipyramide, the anion contains the doubly deprotonated hy-drazido(2-) ligand NHNCOPh2-as N,0-chelate. 2 and 3 have very similar structures, but differ in the oxidation state of the vanadium atom and in the degree of deprotonation of the hydrazine. In 3 neutral NH2NHCOOMe and in 2 the single deprotonated hydrazido(l -) li­ gand NHNHCOOMe~ are bound as N,0-chelates, with the O-donor in rrans-position to the VO group. The remaining coordination sites are occupied by the ONO-donating dinegative dipic ligand. 5, where dipic is replaced by the three-dentate salicylaldehyde-benzoyl-hydra-zone, has a very similar structure to 2. 4 with a V 0 3N2S coordination sphere is the first va-nadiun^V) complex containing the N,S-donating hydrazido(l-) ligand NHNHCSPh-. The following parameters are characteristic for the bonding of the NHNHR-and NHNR2-ligands in 1,2 and 5: V -N 189 ± 1 pm, N -N 134 ± 1 pm and V -N -N 122 ± 2°. 
  Reference    Z. Naturforsch. 49b, 176—185 (1994); eingegangen am 6. September 1993 
  Published    1994 
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 Identifier    ZNB-1994-49b-0176 
 Volume    49 
26Author    StefanH H Üttenhain, Wolfgang BalzerRequires cookie*
 Title    8-(Phenylamino)-l-naphthalinsilbersulfonat (8,1 A N S -A g) 8-(Phenylamino)-l-naphthalene-silversulfonate (8,1 A N S -A g )  
 Abstract    8-(Phenylam ino)-l-naphthalene-silversulfonate, 8-(Phenylam ino)-l-naphthalene-alkali-sulfonates, 8-(Phenylam ino)-1 -naphthalene-tetraalkylammoniumsulfonates 8-(Phenylam ino)-l-naphthalene-silver sulfonate 2 was prepared from the corresponding ammonium salt 1 and silver nitrate under ambient conditions in ethanol. From 2 salts with several other m onovalent cations were obtained. All o f them show similar fluorescence prop­ erties. Attempts to esterify the sulfonate group by means o f alkylhalides were unsuccessful. Only after prolonged reaction times several decom posion products were detected in the TLC. 
  Reference    Z. Naturforsch. 49b, 186 (1994); eingegangen am 19. Oktober 1993 
  Published    1994 
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 Identifier    ZNB-1994-49b-0186 
 Volume    49 
27Author    G.Jeffrey Snyder3, Arndt SimonRequires cookie*
 Title    The New Laves Phase Na2Ba  
 Abstract    The crystal structure o f N a 2Ba was determined from single crystal X-ray diffraction data. It is isostructural with the hexagonal Laves phase Zn2Mg; P 6 3/m mc, a = 739.3(4) pm, c = 1199.9(9) pm. The compound N a 4Ba reported in the phase diagram literature is actually N a2Ba. Comparisons are made with other Laves phases using a strain parameter diagram. 
  Reference    Z. Naturforsch. 49b, 189—192 (1994); received September 20 1993 
  Published    1994 
  Keywords    Sodium Barium, Intermetallic C om pound, H exagonal Laves Phase 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0189.pdf 
 Identifier    ZNB-1994-49b-0189 
 Volume    49 
28Author    S. Bhattacharya, Neena Seth, V. D. Gupta, H. Nöth, M. ThomRequires cookie*
 Title    A Structural Study on Indium Tris-thiocarbamates  
 Abstract    Indium Tris-thiocarbam ates, *H N M R Spectra Indium tris(thiocarbam ates) In(S2CN'Pr2)3 (1), In(SOCN'Pr2)3 (2) and In(S2CNC4H 4)3 (3) have been synthesized and characterized. Variable temperature *H N M R spectra o f 1 and 2 are reported. The X-ray m olecular structures o f 1 and 3 are found to be quite similar; the symmetry o f the In(S2C)3 unit in 3 is close to point group D 3 with small asymmetry in the I n -S bonds. 
  Reference    Z. Naturforsch. 49b, 193 (1994); received A ugust 21993 
  Published    1994 
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 Identifier    ZNB-1994-49b-0193 
 Volume    49 
29Author    Matthias Westerhausen, Bernd Radem, Wolfgang Schwarz, Sonja HenkelRequires cookie*
 Title    Lithium-zinkate mit heteroleptischem Triorganylzinkat-Anion Lithium Zincates with Heteroleptic Triorganylzincate Anion  
 Abstract    -, bis[bis(trimethylsilyl)methyl]-as well as bis(2,2,4,4,6,6-hexa-methyl-2,4,6-trisila-cyc/o-hexyl)zinc react with methyl lithium or phenyl lithium in the pres­ ence of the tridentate l,3,5-trimethyl-l,3,5-triazinane (TMTA) to yield zincates of the type LiZnR2R'-2TMTA. The compounds are colorless and insoluble in aliphatic or aromatic hydrocarbons. These zincates exist in solution as well as in the crystalline state as separated ions, as confirmed for lithium-methyl-bis(2,2,4,4,6,6-hexamethyl-2,4,6-trisila-cyc/o-hexyl)-zincate • 2TMTA by X-ray diffraction (PI; a -1139,5(3); b = 1482,4(4); c = 1528,6(5) pm; a = 95,33(2); ß = 100,13(2); y = 106,91(2)°; Z = 2). The lithium cation is six-coordinated by two TMTA ligands in a distorted anti-prismatic complex. The zinc atom displays a trigonal planar coordination with Z n -C bond lengths of 207 pm to the 2,2,4,4,6,6-hexamethyl-2,4,6-trisila-cyc/o-hexyl ligands and of 202 pm to the methyl group. One trisila-cyc/o-hexyl substi­ tuent exists in the chair, the other one in the twist conformation. The reaction of lithium bis(trimethylsilyl)amide with bis(trimethylsilylmethyl)zinc yields the benzene soluble lithium-bis(trimethylsilyl)amino-bis(trimethylsilylmethyl)zincate TMTA. The molecular structure was confirmed by X-ray diffraction a -1024,8(3); b = 1775,4(7), c = 1918,2(8) pm; Z = 4). The bridging bis(trimethylsilyl)amino ligand displays long Z n -N and L i-N distances of 213 and 208 pm, respectively, due to the steric inter-ligand repulsion. During the reaction of lithium bis(trimethylsilyl)amide with bis[bis(trimethylsilyl)methyl]-zinc no zincate formations observed. The decomposition products lithium bis(trimethylsilyl)-methanide and the heteroleptic bis(trimethylsilyl)amino-bis(trimethylsilyl)methylzinc were detected. 
  Reference    Z. Naturforsch. 49b, 199—210 (1994); eingegangen am 9. Juli 1993 
  Published    1994 
  Keywords    Lithium Zincate, Heteroleptic Triorganylzincate, Zincate, X-Ray, NMR Spectra Bis(trimethylsilylmethyl) 
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 Identifier    ZNB-1994-49b-0199 
 Volume    49 
30Author    Joachim Pickardt, Jing ShenRequires cookie*
 Title    Kristallstruktur des "supramolekularen" Silber(I)thiocyanat-Cyclam-Komplexes [A g(SC N ).(C I0H 24N4)1/2] Crystal Structure of the "Supram olecular" Silver(I)thiocyanate Cyclam Complex [Ag(SCN) * ( C j 0H 24N 4) 1/2]  
 Abstract    ,4,8,11-Tetraazacyclotetradecane, Silver(I) Thiocyanate Complex, Crystal Structure Colourless crystals of the 1,4,8,11-tetraazacyclotetradecane (cyclam) silver(I) thiocyanate complex [Ag(SCN) • (C10H 24N4)1/2] were obtained by diffusion of a solution of cyclam in ethanol into an aqueous solution of K[Ag(SCN)2], The crystals are tetragonal, space group P42/n, Z = 8, a = b -1256.0(4), c = 1185.5(9) pm. The SCN groups act as fi3 ligands, the S atoms of two SCN groups bridge two neighbouring Ag ions, which are only 297.5 pm apart, forming butterfly-like Ag2S2 moieties, the N atoms of the SCN groups form bonds to Ag atoms of adjacent Ag2S2 moieties. Two Ag2S2 units are again connected by cyclam molecules which act as two-dentate bridging ligands. Thus a complicated three-dimensional "supramolecular" structure results. 
  Reference    Z. Naturforsch. 49b, 211—214 (1994); eingegangen am 12. Oktober 1993 1 
  Published    1994 
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 Identifier    ZNB-1994-49b-0211 
 Volume    49 
31Author    Ulrich Timper, G. Ert HellerRequires cookie*
 Title    Ein neues Inselpolyborat: Das Heptaboration in einem Silberikosadiborat A New Polyborate: The H eptaborate Ion in a Silver Icosadiborate  
 Abstract    (Ethylenediamino)silver(I), Icosadiborate, Heptaborate, Tetraborate, Crystal Structure The X-ray crystal structure analysis of the silver icosadiborate hydrate, Ag-,0 ■ 11 B ,03-5 C2H4(NH2)2-20H20 (triclinic, P 1, a = 842.4(1), b = 868.5(1), c = 2160.6(2) pmfcx = 79.5(1), ß = 85.4(1), y = 86.4(1)°, Z = 1), shows that the unit cell contains two anions of heptaborates [B70 9(0H)5]2', two anions of tetraborates [B40 5(0H)4]2~, and eight molecules of crystal water as well as probably one cation of disilver(I)-tris(ethylenediamino) [(Hen)+Ag+(en) Ag+(enH)+] and two cations of ethylenediammonium (HenH)2+. 
  Reference    Z. Naturforsch. 49b, 215—220 (1994); eingegangen am 15. September 1993 
  Published    1994 
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 Identifier    ZNB-1994-49b-0215 
 Volume    49 
32Author    Rolf Minkwitz, Birgit BäckRequires cookie*
 Title    Darstellung und spektroskopische Charakterisierung der Trihalogenphosphonium-Salze PHaI3X+MF6-(Hal = Cl, Br; X = H, D; M = As, Sb)  
 Abstract    Preparation and Spectroscopic Characterization of the Trihalogenophosphonium Salts PHal3X+MF6-(Hal = Cl, Br; X = H, D; M = As, Sb) M = As, Sb) are prepared at 213 K by protonation of the phosphortrihalides in the superacidic media XF/MF5. The salts are characterized by 31P, MS, IR and Raman spectroscopy. 
  Reference    Z. Naturforsch. 49b, 221—224 (1994); eingegangen am 18. Oktober 1993 
  Published    1994 
  Keywords    Trihalogenophosphonium Salts, Preparation, Vibrational Spectra, 31P NMR Spectra PHal3X+MF6~ (Hal = Cl, Br; X = H, D; 
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 Identifier    ZNB-1994-49b-0221 
 Volume    49 
33Author    Requires cookie*
 Title    Metallkomplexe  
 Abstract    mit biologisch wichtigen Liganden, LXIX [1]. Halbsandwichkomplexe von Cobalt(III), Rhodium(III), Iridium(III) und Ruthenium(II) mit Anionen von cx-Hydroxyiminosäuren Metal Complexes with Biological Im portant Ligands, LXIX [1]. 
  Reference    Z. Naturforsch. 49b, 225 (1994) 
  Published    1994 
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 Identifier    ZNB-1994-49b-0225 
 Volume    49 
34Author    Gerd Knitter, Ulrich Behrens, Enno Lork, Rüdiger MewsRequires cookie*
 Title    Perfluorbenzyl-Stickstoff-Derivate Perfluorobenzyl Nitrogen Derivatives  
 Abstract    In the HgF2-assisted addition of Cl2 and Br2 to C6F5CN the compounds C6F5CF=NX (3, 5: X = Cl, Br) and C6F5CF2NX2 (2, 4: X = Cl, Br) are formed. Photochemical decomposition of the dibromoamine (4) gives the diazene C6F5CF2-N=N -CF2C6F5 (6) in 31% yield. The struc­ ture of 6 has been determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 49b, 233—237 (1994); eingegangen am 25. September 1993 
  Published    1994 
  Keywords    Bromofluorination, Chlorofluorination, NN-Dihaloamines, N-Haloimines, Diazenes 
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 Identifier    ZNB-1994-49b-0233 
 Volume    49 
35Author    Ulrich Behrens3, ReinhardH. Oppenheitb+, Wilhelm Isenbergb, Enno Lorka, Jan Petersen3, Rüdiger MewsRequires cookie*
 Title    Thiazyltrifluorid-Komplexe von Mg und Zn Thiazyltrifluoride Complexes of Mg and Zn  
 Abstract    The preparations of [Mg(NSF3)4](AsF6)2 (2a) and [Zn(NSF3)4](AsF6)2 (2b) are reported. The structure of 2 b was determined by X-ray diffraction. The ligand properties of NSF3 are discussed. 
  Reference    Z. Naturforsch. 49b, 238—242 (1994); eingegangen am 11. Oktober 1993 
  Published    1994 
  Keywords    Thiazyltrifluoride, X-Ray, Magnesium Complexes, Zinc Complexes 
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 Identifier    ZNB-1994-49b-0238 
 Volume    49 
36Author    Dietrich Mootz, Michael BornRequires cookie*
 Title    Niedere Hydrate von Aminen. Kristallstrukturen der Hemihydrate von Ethyl-und Diethylamin sowie des Hemi-und Monohydrats von 1-Butylamin [1] Lower Hydrates of Amines. Crystal Structures of the Hemihydrates of Ethyl-and Diethylamine and the Hemi-and M onohydrate of 1-Butylamine  
 Abstract    The melting diagrams of three systems alkylamine-water have been reexamined and the crystal structures of four lower hydrates determined for the first time. The hydrate EtNH2 -0.5 H20 , m.p. -72 °C, is triclinic with space^roup P 1 and Z = 4 formula units per unit cell of dimensions a = 5.104, b = 8.137, c = 9.394 Ä, a = 100.41, ß = 98.41 and y = 97.96° at -150°C. The O and N atoms are hydrogen-bonded into a two-dimensional array l[ON6/3] analogous to the layer of the Cdl2 structure type. The hydrate Et2NH • 0.5 H20 , m.p. -20 °C, is monoclinic with 12/a, Z = 8 , a -8.324, b = 15.090, c = 10.006 Ä and ß -103.34° at -100 °C. The O and N atoms are linked into a four-membered ring spiro chain ifON^] analogous to that in SiS2. The hydrate l-BuNH2 0.5H20 (m.p. -57 °C, monoclinic, P 2x/c, Z = 8,a = 14.994, b = 5.086, c = 16.15 A .,ß -103.45° at -81 °C) contains essentially the same hydrogen-bonded array as the hydrate EtNH,-0.5H20 (see above). l-BuNH2-H20 , the only monohydrate in­ vestigated besides the three hemihydrates (m.p. -60 °C, monoclinic, C 2/m, Z = 4, a = 9.68, b = 4.238, c = 15.58 A, ß = 94.9° at -81 °C), has also a two-dimensional H20/N H 2 partial structure, similar to a subset of the three-dimensional network of the adduct NH3 H20 of analogous composition. Z ur Bildung kristalliner Hydrate von einfachen Alkylaminen gibt es eine Reihe von z. T. schon recht frühen Untersuchungen mit allerdings nicht immer eindeutigen und widerspruchsfreien Ergebnissen. Die Bestimmung von Kristallstrukturen be­ schränkte sich bisher auf einige höhere Hydrate mit W assergehalten oberhalb denen von Pentahydra-ten. Solche wasserreichen Phasen wurden als Cla-thrathydrate oder Semiclathrate charakterisiert. Sie enthalten nämlich dreidimensional vernetzte W irtsstrukturen aus den W assermolekülen und in deren m ehr oder weniger gestörten polyedrischen H ohlräum en die fast immer auch noch H-brücken-aktiven (N -H — O und/oder O -H -N) Am in­ moleküle als Gastspezies [2]. Gegenstand der vorliegenden A rbeit sind nun erstmals K ristallstrukturen niederer Hydrate von * Sonderdruckanforderungen an Prof. Dr. D. Mootz. 
  Reference    Z. Naturforsch. 49b, 243—249 (1994); eingegangen am 27. Oktober 1993 
  Published    1994 
  Keywords    Amine Hydrates, Lower Hydrates, Melting Diagram, Crystal Structure, Hydrogen Bonding 
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 Identifier    ZNB-1994-49b-0243 
 Volume    49 
37Author    P. Frankhauser, H. Pritzkow, W. Siebert, Herrn Prof, Dr, J. Otto, SchererRequires cookie*
 Title    Synthesis and Structure of l,2-Bis(organotin-boryl)ethene Derivatives  
 Abstract    ds-l,2-Bis(diisopropylamino-trimethyltin-boryl)hex-3-ene, rra«s-l,2-Bis(diisopropylamino-trimethylthin-boryl)ethene Trimethyltinlithium reacts with z-l,2-bis(diisopropylamino-chloro-boryl)ethene deriva­ tives 4a (R = Et) and 4b (R = H) to give the ds-l,2-bis(diisopropylamino-trimethyltin-boryl)-hexene-3 (2a) and, surprisingly, the frarts-l,2-bis(diisopropylamino-trimethyltin-boryl)-ethene (5 b) respectively. The constitution of 2 a and 5 b is derived from spectroscopic data, and confirmed by X-ray structure analyses. The formation of the trans-product 5 b probably occurs via a radial intermediate. U nter den zahlreichen Organostannylboranen [1] gibt es bisher nur die Verbindung 1 [2] mit einem Sn,C,N-Substitutionsmuster am Boratom. Gerade diese Substituenten bieten interessante Synthese­ möglichkeiten durch Austausch der Zinn-oder Am ino-Gruppen. Unser Interesse gilt Verbindun­ gen vom Typ 2, die zum Aufbau von Heterocyclen vom Typ 3 unter Eliminierung der Stannylgruppen dienen können. Wir berichten hier über Versuche zur Darstellung der Verbindungen 2, wobei über­ raschenderweise bei R = H nicht das c/s-Produkt 2 b, sondern die trans-Verbindung 5 b entsteht. R R R R / M e3)= ()= ( 
  Reference    Z. Naturforsch. 49b, 250—254 (1994); eingegangen am 6. September 1993 
  Published    1994 
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 Identifier    ZNB-1994-49b-0250 
 Volume    49 
38Author    Requires cookie*
 Title    Darstellung und Struktur von 2.3-Bis[2,4,6-tris(trifluoromethyl)phenyl]-l,2,3-selenadiphosphiran  
  Reference    Z. Naturforsch. 49b, 255 (1994) 
  Published    1994 
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 Identifier    ZNB-1994-49b-0255 
 Volume    49 
39Author    Sabi Varbanov, Elena Russeva, Andrei GanchevRequires cookie*
 Title    Zinc Complexes of Dimethyl(phthalimidomethyl)phosphine Oxide  
 Abstract    Dimethyl(phthalim idomethyl)phosphine Oxide, Zinc Complexes, Synthesis A series o f zinc complexes o f dim ethyl(phthalimidomethyl)phosphine oxide (D PPO , L) have been synthesized: ZnX 2L2, where X = Cl, Br, I or N 0 3. The complexes are characterized by elemental analysis, infrared and 'H N M R spectra and X-ray powder analysis. Infrared spectral data show that L is coordinated to zinc via the phosphoryl oxygen atom. The zinc halide com plexes are found to be isostructural, while the pattern o f Z n(N Ö 3)2L2 differs consid­ erably from those o f halide complexes. 
  Reference    Z. Naturforsch. 49b, 258 (1994); received September 16 1993 
  Published    1994 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0258.pdf 
 Identifier    ZNB-1994-49b-0258 
 Volume    49 
40Author    P. Souza, M. A. Mendiola3, A. Arquerob, V. Ferná, E. G Utiérrez-Pueblac, C. Ruiz-ValerocRequires cookie*
 Title    Copper(II) Complexes of Hydrazone Derivatives  
 Abstract    Three benzil based, macrocyclic oxygen-, nitrogen-, and sulfur-containing ligands, (3,4,10,11 -tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca-7,14-dithione-2,4,9,11 -tetraene) ethanol (L 1), 10,1 l-diethoxy-3,4,10,11-tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca-7.14-dithione-2,4-diene (L2), (3,4,10,11 -tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca-7.14-dione-2,4,9,l 1-tetraene) ethanol (L3); a cyclic ligand, 6-ethoxy-l,6-diphenyl-4-oxo-3,4,5,6-tetrahydro-2,3,5-triazine (L5) and two open chain ligands, benzilsemicarbazone (L6) and benzilbisthiosemicarbazone (L4) are reported. These ligands react with copper(II) chlor­ ide, nitrate and acetate. The complexes obtained have been characterized on the basis o f N M R , IR, electronic and mass spectral studies, conductance and analytical data. The sto-ichiometry and the spectroscopic data o f the complexes indicate that the copper ions are coor­ dinated by neutral ligands or by ligand anions formed by loss o f protons from the ligand. The molecular and crystal structure o f 6-ethoxy-l,6-diphenyl-4-oxo-3,4,5,6-tetrahydro-2,3,5-triazine (L 5) was determined by X-ray diffraction; the space group is triclinic, P 1 with a = 7.865(1), b = 14.101(6), c = 15.733(9) A, a = 69.10(3)°, ß = 75.62(2)°, y = 86.69(2)°, V = 1578(1) A 3, Z = 4. 
  Reference    Z. Naturforsch. 49b, 263—2 (1994); received June 2/October 4 1993 
  Published    1994 
  Keywords    Benzil, Hydrazones, Copper(II), M acroligands, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0263.pdf 
 Identifier    ZNB-1994-49b-0263 
 Volume    49 
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