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'Synthesis' in keywords Facet Publication Year 1981 [X]

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1	Author	Ulrich Wannagat, Thomas Blumenthal, Gerd Eisele, Axel König, Reinhard Schächter, Braunschweig	Requires cookie*
	Title	Synthese von neuen Silazangerüstsystemen * Synthesis of Some Silazane Frameworks
	Abstract	Some novel silazane frameworks (scheme 1: H,J, K, M, P) were synthesized and charac-terized by mainly methyl substituted derivatives. Synthetic routes are given in Scheme 2 and 3, respectively, as well as in equations (13) and (14). Compounds are described in their properties, physical data and elemental and structure analysis.
	Reference	Z. Naturforsch. 36b, 1479—1485 (1981); eingegangen am 7. Mai 1981
	Published	1981
	Keywords	Silazanes, Cyclosilazanes, Synthesis
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	Identifier	ZNB-1981-36b-1479
	Volume	36

2	Author	Ingrid Riess-Maurer, Hildebert Wagner, András Lipták	Requires cookie*
	Title	Synthesis of Kaempferol-3-0-(3",4'' -di-O-a-L-rhamnopyranosy^-^-D-galactopyranoside and its Comparison with the Natural Ascaside Isolated from Astragalus caucasicus
	Abstract	The trisaccharide, 3,4-di-0-(a-L-rhamnopyranosyl)-D-galactose was synthesized using benzyl 2,6-di-0-benzyl-/?-D-galactopyranoside as starting compound. Its acetobromo derivative was coupled with 4',7-di-O-benzyl-kaempferol. The structure of the synthetic kaempferol trioside was characterised by different spectroscopic methods (UV, IR, X H, 13 C NMR and MS). Chromatographic and mass spectrometric comparison of the synthetic product with ascaside precluded their identity.
	Reference	Z. Naturforsch. 36b, 257—261 (1981); received October 21 1980
	Published	1981
	Keywords	Trisaccharide, Synthesis, Synthetic Kaempferol Trioside
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	Identifier	ZNB-1981-36b-0257
	Volume	36

3	Author	Birgit Lehnis, Joachim Strähle	Requires cookie*
	Title	Synthese und Kristallstruktur von C83(AuBr 4 ) 2 Br3 Synthesis and Crystal Structure of Cs3(AuBr4) 2 Br 3
	Abstract	Cs3(AuBr4)2Br3 is obtained in the form of red needles by adding the stoichiometric amount of CsBr to a solution of HAuBr4 and Br3~ in aqueous HBr. The salt decomposes slowly at room temperature to form a mixed-valent, cubic bromo aurate(I,III), in which the linear AuBr 2 ~ ions are partially substituted by Br3~ ions. At 140 °C Cs 2 Au 2 Bre and CsBr are formed. Cs3(AuBr4) 2 Br3 crystallizes monoclinic with four formula units in the space group P2i/c. The structure is built up by AuBr 4 ~ and Br3~ anions and Cs+ cations. An average Au-Br distance of 242.2 pm was found for the square planar AuBr 4 ~ ion. The linear Br3~ groups are almost symmetrical with Br-Br distances of 254.0 and 256.2 pm. Therefore only two vibrations are observed in the IR spectrum: Vas = 172, <5 = 56 cm -1 . The absorptions of the AuBr 4 _ groups are: vas = 250, <5as= 113, y — 102 cm -1 .
	Reference	Z. Naturforsch. 36b, 1504—1508 (1981); eingegangen am 8. September 1981
	Published	1981
	Keywords	Synthesis, IR Spectra, Crystal Structure
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	Identifier	ZNB-1981-36b-1504
	Volume	36

4	Author	Wolfgang Haubold, HansGünter Fehlinger, Gerhard Frey	Requires cookie*
	Title	Diazaborolidyl -a Stable Substituent at Sulfur Nitrogen Compounds
	Abstract	2-Chlor-diazaborolidine, [CH2-N(CH3)]2BC1 (5) and N-silylated sulfur nitrogen com-pounds with sulfur in the oxidation state + 4 or + 6 react to form the boranes 7-11 which are thermally stable compounds. Reactions with other chlorboranes like [(CH3)2N]2BC1,
	Reference	Z. Naturforsch. 36b, 157—160 (1981); eingegangen am 19. September 1980
	Published	1981
	Keywords	Sulfur Nitrogen Compounds, Diazaborolidine, Haloboranes, Synthesis
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	Identifier	ZNB-1981-36b-0157
	Volume	36

5	Author	Frank Kübel, Joachim Strähle	Requires cookie*
	Title	Polymere Dimethyl-und Diphenylglyoximatokomplexe des Cobalts und Eisens mit Pyrazin als Brückenligand. Die Kristallstruktur des Bis(dimethylglyoximato)pyrazin-cobalt(II) + Polymeric Dimethyl-and Diphenylglyoximato Complexes of Cobalt and Iron with Pyrazine as a Bridging Ligand. The Crystal Structure of Bis(dimethylglyoximato)pyrazine Cobalt(II)+
	Abstract	Polymeric bis(dimethyl-and diphenylglyoximato)-complexes of Fe(II) and Co(II) with pyrazine as a bridging ligand have been synthesized. The Co(II) complexes are para-magnetic with n = 1.83 B.M., and surprisingly stable against oxidation. Bis (dimethyl-glyoximato)pyrazine-cobalt (II) crystallizes monoclinic in the space group C2/m with Z = 2. The crystal structure shows linear chains of alternating Co atoms and pyrazine ligands. Perpendicular to the chain, the Co atoms are coordinated in a square planar arrangement by two dimethylglyoximato ligands (Co-N= 189 pm), the local symmetry being C2h-The long Co-pyrazine distance of 224 pm is in agreement with the fact that the compound is a 19 electron complex. The Co complexes do not have conducting properties. The Fe(II) complexes possess the same structure but with stronger bonds in the chain. They show very low conductivity of approximately 10 -10 cm -1 Q~ l . The Mössbauer spectra of the Fe-complexes are reported.
	Reference	Z. Naturforsch. 36b, 441—446 (1981); eingegangen am 16. Januar 1981
	Published	1981
	Keywords	Iron and Cobalt Glyoximato Pyrazine Complexes, Synthesis, Crystal Structure
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	Identifier	ZNB-1981-36b-0441
	Volume	36

6	Author	Eberhard Schweda, Joachim Strähle	Requires cookie*
	Title	Nitrido-azido-Komplexe des Molybdäns(VI) Synthese und Kristallstruktur von MoN(N3)3(NC5H5) Nitrido Azido Complexes of Molybdenum (VI) Synthesis and Crystal Structure of MoN(N3)3(NC5H5)
	Abstract	The explosive nitrido azido complexes MoN(N3)Cl2 • py and MoN(N3)3py are prepared by the reaction of MoCLi(py)2 with (CH3)3SiN3 in 1,2-dichloroethane. Both compounds hydrolyze quickly in moist air. After separation of the insoluble, black MoN(N3)Cl2 • py from the solution of MoN(N3)3py, the latter can be obtained in form of monoclinic, red crystals of the space group C2/c. Its structure consists of monomeric complexes, wherein the Mo atom has a square pyramidal coordination. The nitrido ligand occupies the apex and forms a strong multiple bond of 163.4 pm to the Mo atom. cr-Bonds of different strength exist between the Mo atom and the basal ligands: M0-N3 — 204.3 pm; Mo-py = 225.8 pm. The a-N atoms of the azido groups are sp 2 hybridized, with their lone pair pointing away from the nitrido ligand. The pyridine ligand forms an angle of 61.6° to the basal plane of the coordination polyhedron.
	Reference	Z. Naturforsch. 36b, 662—665 (1981); eingegangen am 10. März 1981
	Published	1981
	Keywords	Synthesis, Crystal Structure, Molybdenum Nitrido Azido Complexes
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	TEI-XML for	default:Reihe_B/36/ZNB-1981-36b-0662.pdf
	Identifier	ZNB-1981-36b-0662
	Volume	36

7	Author	Siegfried Pohl, Ulrich Seyer, Bernt Krebs	Requires cookie*
	Title	Sulfidhalogenide des Germaniums: Darstellung und Strukturen von Ge4S6Br4 und Ge4S6I4 Thiohalides of Germanium: Preparation and Structures of Ge4SeBr4 and Ge4S6l4
	Abstract	The reaction of GeX4 (X = Br, I) and H2S in CS2 yields Ge4S6Br4 (1) and Ge4S6Li (2). The crystal structures of 1 and 2 were determined from single crystal X-ray data (1: PT, a == 880.6, b = 993.4, c = 1010.6 pm, a = 86.05, ß = 64.00, y = 89.87°, V = 792 • 10 6 pm 3 , Z = 2,2 : P"3, a = 1064.0, c = 946.1 pm, V = 928 • 10 6 pm 3 , Z = 2). They consist of isolated adamantane-like molecules.
	Reference	Z. Naturforsch. 36b, 1432—1436 (1981); eingegangen am 23. Mai 1981
	Published	1981
	Keywords	Thiohalides of Germanium, Synthesis, Crystal Structure
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	Identifier	ZNB-1981-36b-1432
	Volume	36

8	Author	Trimethylsilyl Tetrafluorotellurates, Vi, Benno Bildstein, Walter Tötsch, Fritz Sladky, E-F=. Me, E-R	Requires cookie*
	Title	Trimethylsüyl-tetrafluorotellurate(VI)
	Abstract	The interaction of MesSiCl with eis-and trans-(HO)2TeF 4 and eis-and £ran.s-HOTeF 4 OCH 3 yields eis-and trans-(Me3SiO)2TeF 4 and eis-and <rans-Me3SiOTeF 4 OCH3, respectively, which have been characterized by NMR spectroscopy (125 Te, 29 Si, 19 F, X H). Die Trimethylsilylgruppe ist eine häufig verwen-dete Abgangsgruppe in Reaktionen mit Fluoriden:
	Reference	Z. Naturforsch. 36b, 1542—1543 (1981); eingegangen am 22. Juli 1981
	Published	1981
	Keywords	Synthesis, Trimethylsilyl Tetrafluorotellurates(VI), NMR Spectra
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	Identifier	ZNB-1981-36b-1542
	Volume	36

9	Author	OttoJ. Scherer, Heribert Jungmann	Requires cookie*
	Title	Phosphor-Ylid-Komplexe des Platins Phosphorus Ylide Complexes of Platinum
	Abstract	The interaction of eis/trans-[Pt(PPI13) 2 (CH2CI)Cl] (1) with Ph 3 P gives the ylide complex cis-[Pt(PPh 3) 2 (CH 2 PPh 3)Cl]Cl (2), which forms cis-[Pt(PPh 3)(CH 2 PPh 3)Cl 2 ] (3) on heating in benzene. In CH 2 C1 2 , Ph 3 P is added again quanti-tatively with formation of 2. Irradiation of 3 with a 500 W lamp yields cw-Cl 2 Pt(PPh 3) 2 . The ylide complexes 4 and 6 were prepared by treatment of 3 with (Me2N) 3 P or Ph 3 As. 3 and Ph 2 P(CH 2) 2 PPh 2 form the chelate ylide com-plex 6.
	Reference	Z. Naturforsch. 36b, 1663—1665 (1981); eingegangen am 26. August 1981
	Published	1981
	Keywords	Phosphorus Ylide Complexes, Synthesis, NMR Spectra
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	Identifier	ZNB-1981-36b-1663_n
	Volume	36

10	Author	Ortwin Leitzke, Fritz Sladky	Requires cookie*
	Title	Darstellung
	Abstract	von Antimon(V)tetrafluorid-pentafluorotellurat(YI), SbF4OTeF5 und Antimon(V)trifluorid-bis[pentafluoro-tellurat(VI)], SbF3(OTeF5)2 Preparation of Antimony(V)tetrafluoride-pentafluorotellurate(VI), SbF4OTeF5 and Antimony(V)trifluoride-bis[pentafluoro-tellurate(VI)], SbF3(OTeF5)2 The interaction of SbF5 with B(OTeF5)3 yields SbF4OTeF5 and SbF3(OTeF5)2.
	Reference	Z. Naturforsch. 36b, 268—269 (1981); eingegangen am 13. Oktober 1980
	Published	1981
	Keywords	Synthesis, 19 F NMR Spectra, Pentafluorotell urates (VI), Antimony (V)
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	Identifier	ZNB-1981-36b-0268_n
	Volume	36

11	Author	Peter Westhoff, Kurt Zimmermann, Frank Boege, Klaus Zetsche	Requires cookie*
	Title	Regulation of the Synthesis of Ribulose-l,5-bisphosphate Carboxylase and Its Subunits in the Flagellate Chlorogonium elongatum. II. Coordinated Synthesis of the Large and Small Subunits
	Abstract	Transfer of heterotrophically grown cells of the unicellular green alga Chlorogonium elongatum to autotrophic growth conditions causes a 10 -1 5 fold increase in the amount o f the chloroplastic enzyme ribulose-1,5-bisphosphate carboxylase. This increase was found to be due to de novo synthesis. The relative proportions o f large and small subunits o f the enzyme do not change. Their ratio is close to 3.4, the proportions in weight o f the two subunits in the holoenzyme. Continous labelling with [35S]sulfate reveals that the ratios of incorporation into large and small subunits are essentially the same in autotrophic and heterotrophic cells. Pulse-chase experiments show that the subunits are degraded synchronously. The coordinated subunit synthesis cannot be uncoupled using inhibitors o f protein and RNA synthesis or high temperature of cultivation of the alga. The results suggests a very tightly coordinated synthesis o f the large and small subunits of ribulosebisphosphate carboxylase.
	Reference	Z. Naturforsch. 36c, 942 (1981); received July 18 1981
	Published	1981
	Keywords	Ribulose-1, 5-bisphosphate Carboxylase, Synthesis, Subunits, Regulation, Phytoflagellate Chlorogonium elongatum
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	Identifier	ZNC-1981-36c-0942
	Volume	36

12	Author	Jochen Ellermann, Martin Lietz	Requires cookie*
	Title	Chemie polyfunktioneller Liganden, 69 [1] Über drei Organo-Arsen-Käfigverbindungen mit Noradamantanstruktur Chemistry of Polyfunctional Ligands, 69 [1] Three Organo-Arsenic Cage Compounds with Noradamantane Structure
	Abstract	The reaction of l.l.l-tris(diiodarsinomethyl)ethane, CH3C(CH2Asl2)3 (1), with H 2 C(COOC 2 H 5)2, H 2 C(COOCH 3)2 and H 2 C(COC 6 H 5)2 in presence of the auxiliary base (C 2 Hs)3N gives the noradamantane structured compounds CH3C(CH2As)3E2 [E = C(COOC 2 H 5)2 (2), C(COOCH 3) 2 (3) and C(COC 6 H 5) 2 (4)]. The new compounds have been characterized by mass spectrometry and infrared, Raman and X H NMR spectroscopy.
	Reference	Z. Naturforsch. 36b, 1532—1537 (1981); eingegangen am 5. August 1981
	Published	1981
	Keywords	Arsenic Cage Compounds, Synthesis, Vibrational Spectra, Mass Spectra, X H NMR Spectra
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	TEI-XML for	default:Reihe_B/36/ZNB-1981-36b-1532.pdf
	Identifier	ZNB-1981-36b-1532
	Volume	36