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Facet Publication Year 1978 [X]
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41	Author	GerhardE. Herberich, Bernd Heßner	Requires cookie*
	Title	Über die Darstellung von 1.1.4.4-Tetramethyl-1.4-distanna- 2.5-cyclohexadien und dessen Bis(kupfer(I)-chlorid)-Komplex Synthesis of l,l,4,4-Tetramethyl-l,4-distanna-2,5-cyclohexadiene and its Bis(copper(I)chloride) Complex
	Abstract	Hydrostannation, Distannacyclohexadiene, Copper(I) Chloride Complex Hydrostannation of dimethyldiethynylstannane with dimethylstannane leads to 1,1,4,4-tetramethyl-l,4-distanna-2,5-cyclohexadiene, a simple representative of the 1,4-distanna-2,5-cyclohexadiene ring system. With copper(I) chloride an unusually stable bis(copper(I) chloride) complex is obtained. Stannacarbocyclodiene des Typs X(CH=CH)2SnR-2 (mit z.B. X = CH2, C2H4, O-C6H4 und R = CH3,
	Reference	Z. Naturforsch. 33b, 180—182 (1978); eingegangen am 2. November 1977
	Published	1978
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0180.pdf
	Identifier	ZNB-1978-33b-0180
	Volume	33

42	Author	A. Kettrup, P. Ackermann, W. Riepe	Requires cookie*
	Title	Massen-, NMR-und IR-spektroskopische Untersuchungen an Berylliumchelaten substituierter Acetoacetanilide Investigations of Beryllium Chelates with Substituted Acetoacetanilides by Mass. NMR and IR Spectroscopy
	Abstract	Correlation of measurements by mass, NMR and IR spectrometry were carried out for the determination of the structure and stability of beryllium chelates of substituted aceto-acetanilides. The substituents at the phenyl ring of the amide group influence the position of the stretching vibrations of the beryllium-oxygen bonds, the chemical shift of the amide proton and also the abundance ratios of specific ions of fragments in the respective mass spectra. All these results are correlated and represent data for the stability of these metal chelates.
	Reference	Z. Naturforsch. 33b, 183—189 (1978); eingegangen am 6. Oktober/2. Dezember 1977
	Published	1978
	Keywords	Berylliumchelates, Mass Spectra, Hammett a-Values
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0183.pdf
	Identifier	ZNB-1978-33b-0183
	Volume	33

43	Author	D. Seilmann, P. Kreutzer, E. Unger	Requires cookie*
	Title	Über die Koordination von Kohlenmonoxid an Bis(dithiolato)-Eisen-Komplexen [1] On the Coordination of Carbon Monoxide on Bis(dithiolato)-Iron Complexes [1]
	Abstract	Dithiolato Iron Carbonyl Complexes The reaction of CO with iron salts in the presence of benzene-dithiol depends on the oxidation state of iron, pH of the solution, temperature and CO pressure. In alkaline EtOH one obtains labile cis-[Fe(CO)2(C6H4S2)2] 2 ~" complexes, which cannot be isolated in the solid state. On acidifying, oxidizing with O2 or heating the solution, the CO ligands are split off; after reduction with NaBHi, CO can be co-ordinated again at pH > 7 under normal conditions. Reacting benzene-l-thiomethyl-2-thiol in alkaline medium with Fe 2+ and CO yields the isolable [cis-Fe(CO)2(CH3S-C6H4-S)2], which is characterized by elemental analyses, IR, X H NMR and mass spectra. It is a labile complex coordinating CO reversibly.
	Reference	Z. Naturforsch. 33b, 190—196 (1978); eingegangen am 12. Dezember 1977
	Published	1978
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0190.pdf
	Identifier	ZNB-1978-33b-0190
	Volume	33

44	Author	R.R M Brand, M. L. Hallenslebenf, H. K. Schenkel, E. D. Schmid	Requires cookie*
	Title	Ramanintensitäten und Reaktivität von Phenylvinylethern und Phenylvinylsulfiden Raman Intensities and Reactivity of Phenyl Vinyl Ethers and Phenyl Vinyl Sulphides
	Abstract	From a selection of alkyl substituted phenyl vinyl ethers and phenyl vinyl sulphides, respectively, the Raman intensities of the aromatic 8 a, b vibration and the C = C valence vibration were measured and compared to the reactivities in the cycloaddition reaction to tetracyanoethylene.
	Reference	Z. Naturforsch. 33b, 197—199 (1978); eingegangen am 24. Oktober 1977
	Published	1978
	Keywords	Substituted Phenyl Vinyl Ethers, Cycloaddition, Tetracyanoethylene, Raman
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0197.pdf
	Identifier	ZNB-1978-33b-0197
	Volume	33

45	Author	ManfredL. Ziegler, K. Weidenhammer, K. Autenrieth, H. Friebolin	Requires cookie*
	Title	Die Molekül-und Kristallstrukturen von Methyl(4-Br-phenyl)mino-chlorphenylboran, (BrC6H4) (CH3)NB(C1)(C6H5), und Methyl(2-methyl-4-Br-plienyl)amino-clilor(2-metliylphenyl)boran, (BrC7H6)(CH3)NB(Cl)(C7H7)
	Abstract	The Crystal and Molecular Structures of Methyl(4-Br-phenyl)amino-chlorphenylborane, (BrC6H4)(CH3)NB(Cl)(C6H5) and Methyl(2-methyl-4-Br-phenyl)amino-chlor(2-methylphenyl)-borane, (BrC7H6)(CH3)NB(Cl)(C7H7) X-ray, Structure Determination, Amino Boranes The structures of the titles compounds have been determined by three-dimensional X-ray data.
	Reference	Z. Naturforsch. 33b, 200—208 (1978); eingegangen am 19. 0ktober/30. November 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0200
	Volume	33

46	Author	ZarifH. Khalil	Requires cookie*
	Title	Synthesis of New Oxindolotrimethine Meroeyanine Dyes
	Abstract	Meroeyanine Dyes, Synthesis New oxindolotrimethine meroeyanine dyes (3a-l) were prepared by the reaction of 2-methyl quaternary salts with 3-acylidene oxindole (2) in presence of a basic catalyst. The new compound were identified by IR and UY spectral determination. Bactericidal activity of selected quinoxindolotrimethine meroeyanine dyes (3e, g and 1) were tested against 11 pathogenic bacterial strains.
	Reference	Z. Naturforsch. 33b, 209—211 (1978); received August 22/November 14 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0209
	Volume	33

47	Author	NarendraS. Sridhara	Requires cookie*
	Title	Thermal Decomposition of P,P-diphenyl-N-benzyl-phosphinothioic Amide and P,P-diphenyl-N-methyl-phosphinothioic Amide
	Reference	Z. Naturforsch. 33b, 212—213 (1978); received July 1 1977
	Published	1978
	Keywords	2, 2, 4, 4, 6, 6-Hexaphenylcyclophosphazatriene, Diphenylphosphinothioic Amide, 113355-Hexaphenyl-1 -methylaminotriphosphazene-5-sulphide, P, P-Diphenyl-N-dimethylphosphinothioic Amide
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0212.pdf
	Identifier	ZNB-1978-33b-0212
	Volume	33

48	Author	J. P. Tiwari, R. L. Mital	Requires cookie*
	Title	Angular Heterocyclics: Studies in the Synthesis of Some Substituted 6-Anilino-5-alkoxy-12 H-benzo [a] phenothiazines 6-Anilino-5-methoxy-12H-benzo[a]phenothiazines, 6-Anilino-5-isopropoxy-12H-benzo[a]-phenothiazines
	Reference	Z. Naturforsch. 33b, 214—215 (1978); received September 26 1977
	Published	1978
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0214.pdf
	Identifier	ZNB-1978-33b-0214
	Volume	33

49	Author	Mohamed Hilmy Elnagdi, Mohamed Rifaat, Hamza Elmoghayar, ShereifMahmoud Fahmy, Mohamed Kamal, Ahmed Ibraheim, HikmatHussein Alnima	Requires cookie*
	Title	Reactions with Heterocyclic Diazonium Salts, II Synthesis of Some New Pyrazolo[l,5-c]-as-triazines and l,2,4-Triazolo[l,5-c] -as-triazines
	Abstract	Heterocyclic Diazonium Salts, Pyrazolo[l,5-c]-as-triazines 3-Phenylpvrazole-5-diazonium chloride (2) couples with benzoylacetonitrile and with phenacylthiocyanate to yield the corresponding hydrazone derivatives 3 a, b. Whereas 3 a cyclised into the pyrazolo[l,5-c]-as-triazine derivative (4a) upon treatment with concen-trated sulphuric acid via elimination of water, treatment of 3 b with the same reagent under the same conditions has resulted in elimination of thiocyanic acid and the formation of the pyrazolo[l,5-c]-as-triazine derivative (4b). Treatment of 2 with aqueous sodium acetate has afforded the corresponding 3-phenyl-5-diazopyrazole (6). The latter reacted readily with dipolarophiles to yield pyrazolo-[l,5-c]-as-triazine derivatives. Pyrazolo[l,5-c]-as-triazines has also been formed upon treatment of 6 with active methylene compounds. The mechanism of reaction of 2 and 6 with active methylene compounds is discussed. Diazotization of 5-amino-3-ethyl-l,2,4-triazole nitrate (7) has afforded the correspond-ing diazonium derivative which coupled with benzoylacetonitrile and with acetoacet-anilide to yield the corresponding hydrazones 9 a, b. The latter could be cyclised into l,2,4-triazolo[l,5-c]-as-triazines by the action of concentrated sulphuric acid.
	Reference	Z. Naturforsch. 33b, 216—219 (1978); received July 29/November 22 1977
	Published	1978
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0216.pdf
	Identifier	ZNB-1978-33b-0216
	Volume	33

50	Author	C. E. May, K. Niedenzu, S. Trofimenko	Requires cookie*
	Title	Spectroscopic Studies on Pyrazaboles
	Abstract	The mass spectra of several pyrazaboles of type 1 where R and'or R' = C2H5 have been studied. The loss of boron-bonded hydrocarbon moieties under electron impact is the predominant feature of all spectra. Some ultraviolet and nuclear magnetic resonance data on compounds of type 1 have been collected; bulky substituents were observed to lead to conformational isomers that can be detected by 13 C NMR spectroscopy.
	Reference	Z. Naturforsch. 33b, 220—223 (1978); received October 11 1977
	Published	1978
	Keywords	Pyrazaboles, Dimeric Aminoboranes, Boron Compounds, Mass Spectra, NMR
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0220.pdf
	Identifier	ZNB-1978-33b-0220
	Volume	33

51	Author	Milan Strašák	Requires cookie*
	Title	Substituent Effects in the Oxythallation of Alkenes
	Abstract	The rate constants for oxythallation of alkenes have been correlated with their experi-mental and calculated ionization potentials respectively. A good correlation between the rate constants and the ionization potentials of alkenes was found. It was found that inductive effects were the most important in the oxythallation of RCH —CH2 and RiR2C = CH2 alkenes. From earlier studies [1, 2] it is obvious that the rate determining step of the oxidation of alkenes by thallic salts is the formation of the intermediate oxythallation adduct according to Eq (1): R2C=CR2 + T13+ + H20 -> [CR2(0H)CR2T1]2+ + H+ (1)
	Reference	Z. Naturforsch. 33b, 224—227 (1978); received October 20 1977
	Published	1978
	Keywords	Alkenes, Oxythallation, Kinetics, Inductive Effect, Ionization Potentials
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0224.pdf
	Identifier	ZNB-1978-33b-0224
	Volume	33

52	Author	T. K. Raja, N. Soundararajan, V. Bakthavachalam, P. Shanmugam	Requires cookie*
	Title	Selenium Heterocycles, III [1] Synthesis of Selenolo(2,3-b)quinolines
	Abstract	2-Chloro-3-(l',2'-dibromoethyl)quinoline, Selenolo(2,3-b)quinoline, Selenium Heterocycles
	Reference	Z. Naturforsch. 33b, 228—229 (1978); received October 17 1977
	Published	1978
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0228.pdf
	Identifier	ZNB-1978-33b-0228
	Volume	33

53	Author	Edmund Kwiatkowski, Krystyna Kozubek, Zbigniew Pepliǹski	Requires cookie*
	Title	Complexation of Tertiary Amides by Phenols in Carbon Tetrachloride Solutions
	Abstract	Formation constants for 1 : 1 complexes of N,N-dialkylamides and N-acetylmorpholine with chloro-and nitrophenols have been determined spectrophotometrically in carbon tetrachloride solutions at 20 °C. Enthalpies of reaction for 14 systems have been obtained calorimetrically. Dipole moments of N,N-di(n-butyl)acetamide, N,N-di(isobutyl)acet-amide and N-acetylmorpholine have been determined.
	Reference	Z. Naturforsch. 33b, 230—236 (1978); received November 15 1977
	Published	1978
	Keywords	Molecular Complexes, Tertiary Amides, Phenols
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0230.pdf
	Identifier	ZNB-1978-33b-0230
	Volume	33

54	Author	K. B. Ulmschneider, H. B. Stegmann, K. Scheffler, G. Viertel	Requires cookie*
	Title	Ionenpaare von o-Semichinonen mit Diorganothallium(QI)-Kationen* Ion Pairs of Semiquinones with Diorgano Thallium (III) Cations
	Abstract	Diorgano thallium hydroxide reacts very smoothly in organic solvents with catechols to stable paramagnetic ion pairs. This reaction has been investigated with two semiquinone anions and 13 different diorgano thallium cations. The data obtained indicate a strong dependence of the thallium coupling constant on the nature of the metal substituents. The effects observed are discussed in terms of electronic and steric interactions. All ion pairs indicate remarkable temperature dependence of the thallium splitting and the g-factor. These results are compared with the results obtained in alkali metal ion pairs using a model described in the literature. Einführung
	Reference	Z. Naturforsch. 33b, 237—240 (1978); eingegangen am 4. November 1977
	Published	1978
	Keywords	Ion Pairs, ESR, Radicals, Thallium Organic Compounds
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0237.pdf
	Identifier	ZNB-1978-33b-0237
	Volume	33

55	Author	Egbert Gehle, Horst Sabrowsky	Requires cookie*
	Title	First Alkali Metal Thallium(I) Sulfides
	Abstract	Alkali Metal Thallium(I) Sulfides The new hexagonal red compounds K4TI2S3 (o = 1060, c = 711.0 pm), Rb4Tl2S3 (a = 1074, c = 767.4 pm) and the monoclinic red K7TIS4 (a = 1225, b = 1646, c = 1408 pm, ß = 103.2°) were characterized by DTA and X-ray in-vestigations.
	Reference	Z. Naturforsch. 33b, 241 (1978); eingegangen am 29. August 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0241_n
	Volume	33

56	Author	HansJoachim Breunig	Requires cookie*
	Title	Synthese von Tri-fert-butylstibin und Tetra-fert-butylcyclotetrastiban durch Reaktion von Di-tert-butylantimonchlorid mit Magnesium Synthesis of Tri-£er£-butylstibine and Tetra-ferf-butylcyclotetrastibane by Reaction of Di-terf-butylantimonychloride with Magnesium
	Abstract	Tri-£er£-butylstibine, Tetra-Jert-butylcyclotetrastibane Di-terJ-butylantimonychloride reacts with magnesium to tri-teri-butylstibine and tetra-£er£-butylcyclotetrastibane.
	Reference	Z. Naturforsch. 33b, 242—243 (1978); eingegangen am 27. Mai 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0242_n
	Volume	33

57	Author	HansJoachim Breunig	Requires cookie*
	Title	Synthese von Tetrakis(trimethylgermyl)- distiban Synthesis of Tetrakis (trimethylgermyl)- distibane
	Abstract	Tetrakis (trimethylgermyl)distibane Tris(trimethylgermyl)stibine reacts with al-kylhalides with formation of tetrakis (trimethyl -germyl)distibane.
	Reference	Z. Naturforsch. 33b, 244—245 (1978); eingegangen am 18. Nov./12. Dez. 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0244_n
	Volume	33

58	Author	Axel Blecher, Bernd Mathiasch	Requires cookie*
	Title	Zinn-Chalkogenheterocyclen, Mil [1] Dimethylzinntellurid, ein Sechsring Tin-Chalcogen Heterocycles, VIII [1] Dimethyltin Telluride, a Six-membered Ring
	Abstract	The first tin-tellurium six-membered ring, tris(dimethvltin telluride) is obtained by the reaction of dimethylstannane with tellurium. The trimeric character of this compound is proved by molecular weight determination and mass spectral data. Additional vibrational data are given.
	Reference	Z. Naturforsch. 33b, 246 (1978); eingegangen am 11. November/8.Dezember 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0246_n
	Volume	33

59	Author	Henri Brunner, Manfred Muschiol	Requires cookie*
	Title	Optisch aktive Übergangsmetall-Komplexe
	Abstract	, LV [1]. Darstellung und Stereochemie von [C5H5Mo(CO)2 NN'jPFe mit NTS'=Ethylen-diamin und Propylendiamin Optically Active Transition Metal Complexes, LV [1] Preparation und Stereochemistry of [C5H5Mo(CO)2NN']PF6 with NN'=Ethylenediamine and Propylene -diamine In the reaction of CsHsMotCO^Cl with ethylenediamine and propylenediamine, ab-breviated with NN', the square pyramidal cations [C5H5Mo(C0)2NN'] + are formed. The diastereoisomeric pairs of enantiomers of the propylenediamine derivative are separated by fractional crystallization. The epimerization at the asymmetric Mo atom (n,2 = 30 min, 75 °C, CD3OD solution) can be followed by NMR spectroscopy.
	Reference	Z. Naturforsch. 33b, 247—248 (1978); eingegangen am 12. Oktober 1977
	Published	1978
	Keywords	Diastereoisomeric Pairs of Enantiomers, Separation, Epimerization
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	Identifier	ZNB-1978-33b-0247_n
	Volume	33

60	Author	N.P S Bisht, Ranbir Singh, R. K. Bansal, Pahup Singh	Requires cookie*
	Title	Isolation of n-Triacontane, Aliphatic Alcohols and Sitosterols from Convolvulus Microphyllus Sieb
	Abstract	n-Triacontane, n-Hexacosanol, n-Octacosanol, /^-Sitosterol, Convolvulus microphyllus Sieb From the petroleum ether extract of Convol-vulus microphyllus n-triacontane, a mixture of higher aliphatic primary alcohols -w-hexa-cosanol, n-octacosanol, n-triacontanol and n-dotriacontanol, ß-and e-sitosterols were obtained and characterised by IR, NMR and mass spectral studies and normal methods. Convolvulus microphyllus
	Reference	Z. Naturforsch. 33b, 249 (1978); received September 26 1977
	Published	1978
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	Identifier	ZNB-1978-33b-0249_n
	Volume	33

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