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Facet Publication Year 1980 [X]
Facet section ZfN Section B [X]

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181	Author	Hans-Ludwig Krauss, Erich Hums	Requires cookie*
	Title	Oberflächenverbindungen yon Übergangsmetallen, XXIII [1] Die Umsetzung cyclischer Olefine mit Oberflächen-Chrom(II) auf Silicagel bei höherer Temperatur Surface Compounds of Transition Metals, XXIII [1] The Reaction of Cycloolefines with Surface Chromium (II) on Silicagel at Higher Temperature
	Abstract	By reaction with surface chromium(II) on silicagel at T > 150 °C, cycloolefins can undergo ring contraction, methylation/demethylation, hydrogenation/dehydrogenation, and iso-meri7ation. Furthermore, n-alkanes (Ci... C4) are formed incorporating support hydrogen. -As in the case of the corresponding acyclic olefins, a common intermediate MC3 (metalla-cyclobutane^HM-allyl complex) for all these reactions is postulated; the transfer of Ci units is claimed to proceed via a carbene M = CH2 derived from the MC3 precursor.
	Reference	Z. Naturforsch. 35b, 848—854 (1980); eingegangen am 21. Februar 1980
	Published	1980
	Keywords	Surface Compounds, Ring Contraction, Methylation/Demethylation, Hydrogenation/Dehydrogenation, Carbene Intermediates
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0848.pdf
	Identifier	ZNB-1980-35b-0848
	Volume	35

182	Author	Ulf Thewalt	Requires cookie*
	Title	S4N4 und seine Derivate: a-FeCl3 * S4N4, ein Übergangsmetallkomplex mit dem S4N4-Ligand S4N4 and its Derivatives: a-FeCL * S4N4, a Transition Metal Complex with the S4N4 Ligand
	Abstract	Iron(III) Complex, Molecular Structure The adduct a-FeCL • S4N4 has been prepared from FeCl3 and S4N4 in CCI4. The new compound crystallizes in the monoclinic space group P 2i/c with Z — 4 and lattice para-meters a = 6.360(2), b = 13.066(4), c = 12.686(5) A, and ß = 99.43(3)°. An X-ray analysis shows that the S4N4 ring is bonded via one of its nitrogen atoms to the iron atom of the FeCl3 group and that the four ligand atoms around the iron atom form a tetrahedron. The structure of the complex is similar to the known structure of BF3 • S4N4.
	Reference	Z. Naturforsch. 35b, 855—859 (1980); eingegangen am 7. März 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0855.pdf
	Identifier	ZNB-1980-35b-0855
	Volume	35

183	Author	W. Petz	Requires cookie*
	Title	Darstellung von Eisentetracarbonylkomplexen mit Thioacetamiden als Liganden Preparation of Iron Tetracarbonyl Complexes with Thioacetamides as Ligands
	Abstract	The thioacetamids S = C(CH3)(NHR) (R = H, la; R = Ph, lb) react with Fe2(CO)9 to form the iron tetracarbonyl complexes 2 and 3 with S-bonded ligands. IR, X H, 13 C and mass spectra of these new compounds are reported.
	Reference	Z. Naturforsch. 35b, 860—862 (1980); eingegangen am 17. März 1980
	Published	1980
	Keywords	Iron Carbonyl Complexes, Thioacetamid Ligands, NMR Spectra
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0860.pdf
	Identifier	ZNB-1980-35b-0860
	Volume	35

184	Author	Herbert Schumann, Manfred Meissner	Requires cookie*
	Title	Organometallphosphin-substituierte Übergangsmetallkomplexe, XXVII [1] Trinitrosyl-organometallphosphin-mangan-Komplexe Organometalphosphine-Substituted Transition Metal Complexes, XXVII [1] Trinitrosy 1 (organometalphosphine)manganese Complexes
	Abstract	The reactions of carbonyl trinitrosyl manganese with tri-ferf-butylphosphine, di-(ter£-butyl)-trimethylsilyl-, -germyl-, -stannyl-phosphine, fer£-butyl-bis(trimethylsilyl)-, -(germyl)-, -(stannyl)-phosphine, as well as with tris(trimethylsilyl)-, -(germyl)-, and -(stannyl)phosphine result in the elimination of the CO ligand and the formation of corresponding trinitrosyl(organometalphosphine)manganese complexes. The IR, UV, 1 H, 31 P, and 55 Mn NMR spectra are reported and discussed.
	Reference	Z. Naturforsch. 35b, 863—868 (1980); eingegangen am 7. März 1980
	Published	1980
	Keywords	Nitrosyl(organometalphosphine)manganese Complexes Organometal Phosphines, Trinitrosyl Manganese Complexes, NMR Spectra
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0863.pdf
	Identifier	ZNB-1980-35b-0863
	Volume	35

185	Author	Franz Fehér, Franz Ocklenburg, Dieter Skrodzki	Requires cookie*
	Title	Beiträge zur Chemie des Siliciums und Germaniums, XXXII [1] Isomerisierung von höheren Silanen mit Aluminiumchlorid Contributions to the Chemistry of Silicon and Germanium, XXXII [1] Isomerization of Higher Silanes with Aluminium Chloride
	Abstract	n-Tetrasilane, n-Pentasilane, n-Hexasilane, Isomerization n-Tetrasilane, n-pentasilane and n-hexasilane have been heated with aluminium chloride in different solvents. In aromatic solvents besides competitive disproportionation reactions isomerization reactions occur, whereas in non-aromatic solvents only decomposi-tion can be observed. The conditions have been investigated, where isomerization reactions predominate and from n-tetrasilane iso-tetrasilane, from n-pentasilane iso-and neo-penta-silane as well as from n-hexasilane 2-silylpentasilane, 3-silylpentasilane, 2,3-disilyltetra-silane, and 2,2-disilyltetrasilane are formed in good yields.
	Reference	Z. Naturforsch. 35b, 869—872 (1980); eingegangen am 21. März 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0869.pdf
	Identifier	ZNB-1980-35b-0869
	Volume	35

186	Author	Walter Siebert, Hans Schmidt, Roland Full	Requires cookie*
	Title	Darstellung und Ligandeneigensehaften eines 1.2.5-Azadiborolen-Derivates [1] Synthesis and Ligand Properties of an 1,2,5-Azadiborolene Derivative [1]
	Abstract	1,2,5-Azadiborolene, Azadiborolene Transition Metal Complexes 3,4-Diethyl-l,2,5-trimethyl-l,2,5-azadiborolene (3) is obtained from 3,4-diethyl-2,5-dimethyl-l,2,5-thiadiborolene (1) and heptamethyldistannazan. The Lewis-acidic ti 4 ligand (3) forms the transition metal complexes 5, 6, 7 and 8, when reacted with Fe2(CO)9, (C5H5)CO(CO)2, Ni(CO)4 and Co2(CO)8, respectively. The properties of 5-8 are compared with those of the corresponding thiadiborolene complexes. In contrast to 1 the azadi-borolene ligand does not favor the formation of tripledecker complexes.
	Reference	Z. Naturforsch. 35b, 873—881 (1980); eingegangen am 10. März 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0873.pdf
	Identifier	ZNB-1980-35b-0873
	Volume	35

187	Author	Jan Bergman, Lars Engman	Requires cookie*
	Title	Tellurium in Organic Synthesis, IX [15] Oxidation of Some Nitrogenous Compounds with Te02
	Abstract	Some phenylhydrazines were readily converted to diaryltellurium dichlorides in 27-40% yield when treated with Te02 in refluxing acetic acid containing lithium chloride. It was also found that certain ketones could be regenerated from their corresponding semi-carbazones, azines and hydrazones when submitted to the same reaction conditions.
	Reference	Z. Naturforsch. 35b, 882—884 (1980); received February 18 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0882.pdf
	Identifier	ZNB-1980-35b-0882
	Volume	35

188	Author	Hans Achenbach, Bernd Raffelsberger	Requires cookie*
	Title	Alkaloide in Tabernaemontana-Arten, XII [1]
	Abstract	From the methanolic extract of the stems of T. olivacea we isolated 12 alkaloids and deduced their structures. The main alkaloidal constituent is the new compound condylo- carpine-Nt,-oxide (1). Besides this, we found akuammidine (16) and 10 further known alkaloids, which belong to the ibogamine-type.
	Reference	Z. Naturforsch. 35b, 885—891 (1980); eingegangen am 4. Februar 1980
	Published	1980
	Keywords	Alkaloids, Tabernaemontana olivacea, Condylocarpine-N-oxide
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0885.pdf
	Identifier	ZNB-1980-35b-0885
	Volume	35

189	Author	Wolfgang Stadlbauer, Nadia Ghobrial, Thomas Kappe	Requires cookie*
	Title	Synthese von Isocumarinen aus Phenylmalonylheterocyclen Synthesis of Isoeoumarines from Phenylmalonyl Heterocyclic Compounds
	Abstract	Reaction of diphenylcarbonate (2) with enolized phenylmalonyl heterocyclic compounds as the quinolones 1 a-c, the quinolizinones 4 or the phenalenones 6 a, b yields the condensed isoeoumarines 3 a-c, 5 or 7 a, b, respectively. Contrary to these results 3-hydroxy-2-phenyl-chinchonic acid (8) or its decarboxylated product 10 do not form the expected isocoumarin 9 but afford the diquinolino-y-pyrone 11.
	Reference	Z. Naturforsch. 35b, 892—895 (1980); eingegangen am 19. März 1980
	Published	1980
	Keywords	Diphenylcarbonate, Enolized Phenylmalonyl Heterocyclic Compounds, [2] Benzopyranones, Carbonylizing Cyclization
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0892.pdf
	Identifier	ZNB-1980-35b-0892
	Volume	35

190	Author	Wolf-H Gündel	Requires cookie*
	Title	Reaktionen von Cyanpyridinium-Salzen mit Hydroxylamin Investigations of Quaternary Pyridinium Salts, XI [1] Reactions of Cyanopyridinium Salts with Hydroxylamine
	Abstract	The preparation of quaternary pyridinium salts with amidoxime group in 2-, 3-and 4-position is described. The isomer with the substituent in 3-position rearranges on addition of base to a l-hydroxy-2-imino-3-pyridinecarbaldimine. The reaction of 3-cyano-pyridinium salts with hydroxylamine and potassium terf-butoxide gives derivatives of dipyrido[l,2-a: 3',4'-c]pyrrole.
	Reference	Z. Naturforsch. 35b, 896—901 (1980); eingegangen am 21. März 1980
	Published	1980
	Keywords	Pyridinium Salts, Rearrangement, Condensation Reaction
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0896.pdf
	Identifier	ZNB-1980-35b-0896
	Volume	35

191	Author	Hubert Schönowsky, Hermann Bieringer	Requires cookie*
	Title	Nitrodiphenylether, ihre Herstellung und herbizide Wirkung* Nitrodiphenylethers, their Preparation and Herbicidal Activity
	Abstract	Nitrodipheny lethers, Herbicides Nitrodiphenylethers are new herbicides with high activity. Methods for the synthesis of these compounds are reviewed.
	Reference	Z. Naturforsch. 35b, 902—908 (1980); eingegangen am 7. Dezember 1979
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0902.pdf
	Identifier	ZNB-1980-35b-0902
	Volume	35

192	Author	H. Budzikiewicz, H. Scholl, W. Neuenhaus, G. Pulverer, H. Korth	Requires cookie*
	Title	Dialkylresorcine aus Pseudomonas aureofaciens [1] Dialkyl Resorcinols from Pseudomonas aureofaciens [1]
	Abstract	Pseudomonas aureofaciens, Dialkyl Resorcinols 2-n-Hexyl-5-n-pentyl and 2-n-hexyl-5-n-heptyl resorcinol have been isolated from Pseudomonas aureofaciens.
	Reference	Z. Naturforsch. 35b, 909—910 (1980); eingegangen am 15. Februar 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0909.pdf
	Identifier	ZNB-1980-35b-0909
	Volume	35

193	Author	E. Wünsch, L. Moroder, M. Gemeiner, E. Jaeger, A. Ribet, L. Pradayrol, N. Vaysse	Requires cookie*
	Title	Totalsynthese yon Somatostatin-28 (Big-Somatostatin) Total Synthesis of Somatostatin-28 (Big Somatostatin)
	Abstract	The total synthesis of the octacosapeptide corresponding to the proposed primary structure of porcine somatostatin-28, a possible precursor of somatostatin, is described. The primary structure of somatostatin-28 corresponds to that of somatostatin elongated at the N-terminus by a tetradecapeptide sequence. The synthesis has been performed using the strategy of overall acid labile side chain protection based on £er£-butanol and adamantol derived protecting groups in combination with the S-ter£-butylthio group for the reversible blocking of the cysteine thiol functions and the N a -2-nitrophenylsulfenyl group for the chain elongation steps. Upon assembly in sequence order of the four suitably protected fragments related to sequence 18-28, 15-17, 8-14 and 1-7, respectively, reductive cleavage of the S-tertf-butylthio groups from the fully protected octacosapeptide, followed by acidolytic deprotection via exposure to trifluoroacetic acid and subsequent air oxidation led to crude somatostatin-28. Purification by gel filtration on Biogel P6 and ion exchange chromatography on Biogel CM 2 produced the desired product in satisfactory yields and at a high degree of purity as judged from different analytical tests. The correctness of the proposed primary structure was ultimately proofed by comparative analysis of the synthetic and natural product by means of chromatographic, immunological and biological assays.
	Reference	Z. Naturforsch. 35b, 911—919 (1980); eingegangen am 4. Juni 1980
	Published	1980
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	Identifier	ZNB-1980-35b-0911
	Volume	35

194	Author	Abdul Malik, Salimuzzaman Siddiqui, H.E J, Wolfgang Voelter	Requires cookie*
	Title	A New Weak Base from Rauwolfia vomitoria Afzuelia
	Abstract	Rauwolfia vomitoria Afzuelia, Neonorreserpine A new weak base from reserpine family has been isolated from Rauwolfia vomitoria Afzuelia and provisionally named as neonorreserpine. The chemical and spectral evidence established it as a distinct isomer of pseudoreserpine.
	Reference	Z. Naturforsch. 35b, 920—923 (1980); received February 20 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0920.pdf
	Identifier	ZNB-1980-35b-0920
	Volume	35

195	Author	Reinhard Nast, Axel Beyer	Requires cookie*
	Title	2(Pet3) 2] Alkynyl Compounds of Transition Metals, XXXXI [1] Planar Complexes of the Type to5-[Pd(feCC6H4C=CH)2(Pet3)2]
	Abstract	<rcms -Bis (1,2-ethynylphenylethynyl)-bis (tri ethy lphosphine)palladium (II), trans-Bis (1,4 -ethyny lpheny lethyny 1) -bis (triethy lphosphine)palladium (II) The diamagnetic trans-planar complexes [Pd(C = CR)a(Pets)a] (R = 1,2-C6H4C = CH, 1,4-C6H4C = CH; et — C2H5) are prepared according to the equation (1). The constitution and the structure of these compounds are demonstrated by their IR, *H and 31 P NMR spectra.
	Reference	Z. Naturforsch. 35b, 924—925 (1980); eingegangen am 28. Februar 1980
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0924_n.pdf
	Identifier	ZNB-1980-35b-0924_n
	Volume	35

196	Author	P. W. Jolly, C. Krüger, K.-P Schick, G. Wilke	Requires cookie*
	Title	The Structure of [r?3-C3H5PdP(C6H5)3] 2
	Abstract	X-ray, Palladium-^ 3 -allyl Complex The 1:1 adduct formed by triphenylphosphine with bis(^ 3 -allyl)palladium disproportionates at 0 °C in toluene to give the title compound. A crystal structure determination confirms the presence of a Pd-Pd bond and bridging r/ 3 -allyl groups.
	Reference	Z. Naturforsch. 35b, 926—928 (1980); received February 8 1980
	Published	1980
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	Identifier	ZNB-1980-35b-0926_n
	Volume	35

197	Author	Monika Kümpers, Robert Schöllhorn	Requires cookie*
	Title	Ternary Molybdenum Sulfides of the Heavy Alkali Metals
	Abstract	Two series of ternary molybdenum sulfides, ASMO4S6 (A = K, Rb, Cs) and A2M015S20 (A = K, Rb), were prepared by reduction of molybdenum disulfide with alkali metals in alkali halide melts at 1100-1300 K. All com-pounds are hexagonal and show electronic conductivity; structural characteristics suggest isolated [Mo/S]^ chains as lattice elements for AzMo4S6.
	Reference	Z. Naturforsch. 35b, 929—930 (1980); received April 1980
	Published	1980
	Keywords	Ternary, Molybdenum Sulfides, Molybdenum Disulfide
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0929_n.pdf
	Identifier	ZNB-1980-35b-0929_n
	Volume	35

198	Author	Claus-Dierk Hager, Friedo Huber	Requires cookie*
	Title	(Hydroxyalkyl)-und (4-Hydroxyphenyl)- organoplumbylsulfide (Hydroxyalkyl)-and (4-Hydroxyphenyl)-organoplumbyl Sulfides
	Reference	Z. Naturforsch. 35b, 931—933 (1980); eingegangen am 4. März 1980
	Published	1980
	Keywords	Organolead Thiocompounds, (Hydroxyalkyl)-organoplumbyl Sulfides, (4 -Hydroxy phenyl) -organoplumbv 1 Sulfides, Preparation, Redistribution
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0931_n.pdf
	Identifier	ZNB-1980-35b-0931_n
	Volume	35

199	Author	R. Radeglia, S. L. Spassov, R. Stefanova, S. D. Simova	Requires cookie*
	Title	Verschiebungen in para-substituierten 3-Phenylpropan8äure-methylestern The Transmission of Substituent-Induced 13 C NMR Chemical Shifts in para-Substituted 3-Phenyl Propanoic Acid Methyl Esters
	Abstract	Carbon-13 chemical shifts have been measured of joara-substituted 3-phenyl propanoic acid methyl esters. The substituent-induced 13 C shifts of the side chain were related to Hammett substituent effects by the dual substituent para-meter method. The transmission of substituent effects and the factors that influence 13 C shifts are discussed.
	Reference	Z. Naturforsch. 35b, 934—936 (1980); eingegangen am 14. Januar 1980
	Published	1980
	Keywords	Dual Substituent Parameters, Polar and Steric Interactions, Conformational Energy, 13 C NMR Spectra
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	Identifier	ZNB-1980-35b-0934_n
	Volume	35

200	Author	Ekkehard Lindner, Sigurd Hoehne, Jörg-Peter Gumz	Requires cookie*
	Title	Das Verhalten von Mono-und Diorganylphosphansulfiden gegenüber Metallcarbonylsy steinen, XXIII [1]
	Abstract	Kristall-und Molekülstruktur von fi-[Oxybis(dimethylphosphan)] -bis[dicarbonyl(h 5 -cyclopentadienyl)-mangan(I)] The Behavior of Mono-and Diorganylphosphane Sulfides towards Metal Carbonyl Systems, XXIII [1] Crystal and Molecular Structure of //-[Oxybis(dimethylphosphane)]-bis [dicarbonyl (h 5 -cyclopentadienyl) -manganese(I)] X-ray, /z-Oxy Phosphane Complex Manganese [h5-C5H5(0C)2MnP(CH3)2]20 (1) which can be prepared from h5-C5H5(OC)2MnP(CH3)2Cl, H20 and N(C2Ü5)3, crystallizes monoclinicly in the space group P2i/c with two molecules in the unit cell. The crystal structure was refined to a fü-value of 0.055. 1 contains disordered bridging O atoms.
	Reference	Z. Naturforsch. 35b, 937—938 (1980); eingegangen am 28. Januar/12. März 1980
	Published	1980
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	Identifier	ZNB-1980-35b-0937_n
	Volume	35

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