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81	Author	Albini, H. Kisch	Requires cookie*
	Title	A
	Abstract	Chromium and tungsten carbonyls react with 3,3,4,4-tetramethyl-l,2-diazetine (1) or its mono-N-oxide (2) to form complexes (l)M(CO)5, (l)2M(CO)4, (l)M2(CO)io, (l)2M2(CO)8, (l)3M2(CO)6 or (2)M(CO)5 and (2)2M(CO)4, resp. In the reactions of 2 some deoxygenation affords complexes of 1 as by-products. The stability of these and other complexes of the N=N group is related to the ring size of the cyclic diazene ligand.
	Reference	Z. Naturforsch. 37b, 468—472 (1982); received November 13 1981
	Published	1982
	Keywords	I, 2-Diazetines, 1, 2-Diazetine-N-oxide, Chromium Complexes, Tungsten Complexes
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	Identifier	ZNB-1982-37b-0468
	Volume	37

82	Author	Klaus Burger, Herbert Goth	Requires cookie*
	Title	Positionsselektivität und Regiochemie bei Abfangreaktionen mit Heterokumulenen Cycloaddition Behaviour of Bis(trifluoromethyl) Substituted Nitrile Ylides [1] Site Selectivity and Regiochemistry of Trapping Reactions with Heterocumulenes
	Abstract	3,3-bis(trifluoromethyl)-2,2-dihydro-l,4,2-oxazaphosphol-4-enes on thermolysis undergo a 1,3-dipolar cycloreversion reaction with formation of bis(trifluoro-methyl) substituted nitrile ylides and trimethyl phosphate. The nitrile ylides are trapped by N-8ulfinyl aniline, phenyl isocyanate, phenyl isothiocyanate, diphenyl ketene, and carbon disulfide. Site selectivity and regiochemistry of the [3 + 2]cycloaddition reactions are described. The results are compared with those obtained from [3 + 2]cycloaddition reactions of nitrile imines, nitrile oxides, alkyl, and aryl substituted nitrile ylides with heterocumulenes.
	Reference	Z. Naturforsch. 37b, 473—485 (1982); eingegangen am 30. September 1981
	Published	1982
	Keywords	1, 3-Dipolar Cycloreversion Reactions, 2, 2-Dihydro-l, 4, 2-oxazaphosphol-4-enes, Trifluoromethyl Substituted 1, 3-Dipoles, Partially Fluorinated Heterocyclic Compounds 2, 2, 2-Trimethoxy-
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	Identifier	ZNB-1982-37b-0473
	Volume	37

83	Author	H. Barlas, H. Parlar, D. Kotzias, F. Körte	Requires cookie*
	Title	Reaktionen von Phenanthren mit Stickstoffdioxid in ultraviolettem Licht Reactions of Phenanthrenes with Nitrogendioxid in UV Light
	Abstract	The compounds 2-7 were isolated from solutions of phenanthrene (1) and nitrogendi-oxide in carbon tetrachloride after irradiation with UV light having long wavelengths (A > 290 nm). With the help of spectroscopical methods the proposed structures are derived. Radical mechanisms are proposed for these reactions.
	Reference	Z. Naturforsch. 37b, 486—489 (1982); eingegangen am 2. November 1981
	Published	1982
	Keywords	Phenanthrene, Nitrogendioxid, UV Light
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	Identifier	ZNB-1982-37b-0486
	Volume	37

84	Author	Wolfgang Wiegrebe, Margit Vilbig	Requires cookie*
	Title	Enamine als Zwischenprodukte der Simon-Awe-Komplexe Enamines as Intermediates of Simon-Awe Complexes
	Abstract	Disodium-pentakis -(cyano-C) -nitrosy 1 -ferrate(2), Enamine Intermediates, Simon-Awe Complexes, Legal Complexes Enamines from acetaldehyde, propionaldehyde and cyclohexanone produce coloured complexes with disodiiun-pentakis-(cyano-C)-nitrosylferrate(2) more rapidly than the carbonyl components together with piperidine, so indicating enamine intermediates. -The Legal complexes from acetaldehyde and acetone are protonated to the corresponding Simon-Awe complexes.
	Reference	Z. Naturforsch. 37b, 490—493 (1982); eingegangen am 23. September 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0490
	Volume	37

85	Author	MohammadAtaullah Khan, Hans Horn, Wolfgang Voelter	Requires cookie*
	Title	Isolierungen und 11 C-NMR-Spektroskopie von Indoleninalkaloiden Isolation and 13 C NMR Spectroscopy of Indolenine Alkaloids
	Abstract	The indolenine alkaloids raucaffricine and perakine were isolated from Rauwolfia caffra Sonder and their PFT 13 C{ 1 H}-NMR spectra studied for the first time. The interpretations of their spectra were accomplished in correlating with those of quinuclidine, indole, methyl-a-D-galactopyranoside, methyl-ß-D-galactopyranoside, methyl-2,6-di-0-methyl-a-D-galactopyranoside and methyl-3-O-methyl-/S-D-galactopyranoside.
	Reference	Z. Naturforsch. 37b, 494—498 (1982); eingegangen am 13. Oktober 1981
	Published	1982
	Keywords	13 C NMR Spectra, Indolenine Alkaloids, Rauaffricine, Perakine
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	Identifier	ZNB-1982-37b-0494
	Volume	37

86	Author	Peter Seidel, Ivar Ugi	Requires cookie*
	Title	Die Synthese von 1-substituierten 4.4.4-Trichlor-zl 2 -trans-butenen The Synthesis of 1-Substituted 4,4,4-Trichloro-Zl 2 -fra7W-butenes
	Abstract	1,1,1 -Trichloro-zl 2 -butene Derivatives, Olefin Formation Numerous 1-substituted 4,4,4-trichloro-zl 2 -butenes are prepared from the 1-substituted 2-bromo-4,4,4-trichloro-butanes by HBr-elimination and by substitution reactions.
	Reference	Z. Naturforsch. 37b, 499—503 (1982); eingegangen am 14. Dezember 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0499
	Volume	37

87	Author	Hans Geiger, Sven Reichert, KenR. Markham	Requires cookie*
	Title	Herbacetin-3-/9-D-(2-0-/?-D-glucopyranosidoglucopyranosid)- 8-/?-D-glucopyranosid und Gossypetin-3-^-D-(2-0-^-D-glucopyranosido- glucopyranosid)-8-ß-D-glucopyranosid, zwei neue Flavonolglykoside aus Equisetum hyemale L. (Equisetaceae) Herbacetin-3-/S-D-(2-0-/3-D-glucopyranosidoglucopyranoside)-8-/?-D-glucopyranoside and Gossypetin-3-/3-D-(2-0-/9-D-glucopyranosidoglucopyranoside)-8-/3-D-glucopyTanoside, two New Flavonol-glycosides from Equisetum hyemale L. (Equisetaceae)
	Abstract	Two new flavonol glycosides, herbacetin-and gossypetin-3-/3-D-(2-0-/3-D-glucopyrano-sidoglucopyranoside)-8-ß-D -glucopyranoside have been isolated from the aerial parts of Equisetum hyemale L. together with the known kaempferol-3-/?-D-(2-0-/S-D-glucopyrano-sidoglucopyranoside) -7-ß-D -glucopyranoside.
	Reference	Z. Naturforsch. 37b, 504—507 (1982); eingegangen am 12. November 1981
	Published	1982
	Keywords	Equisetum hyemale, Equisetaceae, Herbacetin-glycosides, Gossypetin-glycosides, 13 C NMR Spectra
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	Identifier	ZNB-1982-37b-0504
	Volume	37

88	Author	Elmar Flaskamp, -A, Gottfried Zimmermann, »., Gerhard Nonnenmacher, Otto Isaac	Requires cookie*
	Title	Untersuchungen zur Charakterisierung des Prochamazulens Matrizin aus Matricaria chamomilla L. Studies on the Characterization of the Chamazulene Precursor Matricine from Matricaria chamomilla L
	Abstract	The relative configuration of the thermolabile chamazulene precursor matricine has been established by NMR spectrometric studies. The NMR spectral data prove to be consistent with the well-known structure of the chamomile component. On the basis of our results the levorotatory natural substance moreover can be specified stereochemically as (—)-(3S, 3aR, 4S, 9R, 9aS, 9bS)-4-acetoxy -2,3,3a,4,5,9,9a,9b -octahy dro -9 -hydroxy -3,6,9 -trimethy lazuleno [4,5 -b ]furan -2 -one.
	Reference	Z. Naturforsch. 37b, 508—511 (1982); eingegangen am 24. November 1981
	Published	1982
	Keywords	Matricaria chamomilla L, Matricine, NMR Spectra, Stereochemistry
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	Identifier	ZNB-1982-37b-0508
	Volume	37

89	Author	Abdul Malik, Nighat Afza, Salimuzzaman Siddiqui, H.E J	Requires cookie*
	Title	Some Extensions of von Braun (BrCN) Reaction on Organic Bases: Part II
	Abstract	von Braun Cyanogen Bromide Reaction Extensions of von Braun Cyanogen bromide reaction on Ephedra alkaloids and simpler bases have resulted in synthesis of substituted oxazolidines and a whole Beries of nitrogen analogues of ephedrine, desoxy ephedrine and simpler amines. The general applicability and limitations of such extension of the reaction are also discussed.
	Reference	Z. Naturforsch. 37b, 512—518 (1982); received August 17 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0512
	Volume	37

90	Author	GeorgiY. Papanov, PeterY. Malakov	Requires cookie*
	Title	6ß-Hydroxyteuscordin and 2/3-,6/9-Dihydroxyteuscordin Two New Diterpenoids from Teucrium scordium L
	Abstract	Two new furanoid diterpenes of clerodane type, 6 /9-hydroxyteuscordin (1) and 2/?,6/3-dihydroxyteuscordin (3) have been isolated from Teucrium scordium var. scordium, Lamiaceae. Their structures and stereochemistry have been determined on the basis of chemical reactions and spectroscopic evidence.
	Reference	Z. Naturforsch. 37b, 519—520 (1982); received September 1 1981
	Published	1982
	Keywords	Teucrium scordium L, Lamiaceae, Clerodane Type, Furanoid Diterpene
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	Identifier	ZNB-1982-37b-0519
	Volume	37

91	Author	VirinderS. Parmar, HirdayN. Jha, SudershanK. Sanduja, Radhika Sanduja	Requires cookie*
	Title	Trigocoumarin -a New Coumarin from Trigonella foenumgraecum
	Abstract	A new coumarin, named trigocoumarin has been isolated from Trigonella foenumgraecum along with some known compounds. Based upon its spectral (IR, UV, NMR and MS) and analytical data, trigocoumarin has been assigned the structure: 3-(ethoxycarbonyl)-methy 1 -4 -methyl -5,8-dimethoxy coumarin.
	Reference	Z. Naturforsch. 37b, 521—523 (1982); received October 8 1981
	Published	1982
	Keywords	Trigonella foenumgraecum, Leguminoseae, Coumarin
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	Identifier	ZNB-1982-37b-0521
	Volume	37

92	Author	Klaus Redieß, Wolfgang Sawodny	Requires cookie*
	Title	UCI5 and Ua6
	Abstract	Synthesis, Uraniumpentachloride, Uraniumhexachloride New methods are reported which allow the synthesis of pure UCI5 and UCU in high yields. UCI5 is obtained by chlorination of UF5 • 2 SbFs with BCI3 at low temperatures, UCle by direct chlorination of UCI4 in SbCls.
	Reference	Z. Naturforsch. 37b, 524—525 (1982)
	Published	1982
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	Identifier	ZNB-1982-37b-0524_n
	Volume	37

93	Author	Marianne Baudler, Gabi Kupprat	Requires cookie*
	Title	Beiträge zur Chemie des Phosphors, 113 [1, 2] Synthese und Eigenschaften des Azadiphosphirans (f-BuP)2N(i-Pr) Contributions to the Chemistry of Phosphorus, 113 [1, 2] Synthesis and Properties of the Azadiphosphirane (£-BuP)2N(i-Pr)
	Reference	Z. Naturforsch. 37b, 527—530 (1982); eingegangen am 7. Dezember 1981
	Published	1982
	Keywords	l-Isopropyl-2, 3-di-Zer£-butyl-l, 2, 3-azadiphosphirane, Azadiphosphacyclopropanes, Cycloazaphosplianes, Heterocyclophosphanes
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	Identifier	ZNB-1982-37b-0527
	Volume	37

94	Author	Doris Bodenstein, Axel Brehm, PeterG. Jones, Einhard Schwarzmann, GeorgeM. Sheldrick	Requires cookie*
	Title	Darstellung und Kristallstruktur von Arsen(III)phosphor(V)oxidhydroxid As2P05(0H) Preparation and Crystal Structure of the Arsenic(III) Phosphorus(V) Oxide Hydroxide As2POs(OH)
	Abstract	The title compound was prepared by heating the hydrolysis products of ASPO4 in a sealed tube. The crystal structure was determined and refined to R = 0.028 [P2i/n, a = 454.5(1), b = 1229.0(2), c = 972.8(3) pm, ß = 100.13(2)°, Z = 4]. The structure, which is not isostructural with As30s(0H), consists of infinite layers, containing pyramidal AS(III)03 and tetrahedral P(V)04 groups, and stabilised by hydrogen bonding of the form P-O-H -O-P.
	Reference	Z. Naturforsch. 37b, 531—533 (1982); eingegangen am 24. November 1981
	Published	1982
	Keywords	Sealed Tube Synthesis, Crystal Structure, Arsenic(III), Phosphorus(V)
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	Identifier	ZNB-1982-37b-0531
	Volume	37

95	Author	Karl-Friedrich Tebbe, Roland Fröhlich	Requires cookie*
	Title	Beiträge zur Strukturchemie phosphorhaltiger Ketten und Ringe, V [1]
	Abstract	Die Molekül-und Kristallstruktur des 1.2.3.4-Tetra-ferf-butyl-1.4-bis(trimethylsilyl)tetraphosphans, Me3Si-(«-BuP)4-SiMe3 Structural Chemistry of Phosphorus-Containing Chains and Rings, V [1] Molecular and Crystal Structure of 1,2,3,4-Tetra-ferf-butyl-1,4-bis(trimethylsilyl)tetraphosphane, (H3C)3Si-(f-BuP)4-Si(CH3)3 The compound l,2,3,4-tetra-£er£-butyl-l,4-bis(trimethylsilyl)tetraphosphane, Me3Si-(£-BuP)4-SiMe3, C22H54P4Si2, crystallizes monoclinically in the space group P2i/n (No. 14) with a = 889.9 pm, b = 2292.8 pm, c = 1568.0 pm, ß = 94.14° and Z = 4 formula units. The molecule forms a twisted Si-P4-Si-chain with two kinds of P-P-bonds. The atoms neighbouring the silicium atoms take part in bonds of length d(P-P) = 218.8 pm, whereas the central bond d(P-P) = 221.4 pm is much longer. A special feature of the structure is a short contact d(P-P) = 345.6 pm. Therefore, the inner region of the molecule has the shape of a nearly planar trapezium of the four phosphorus atoms. The periphery of the molecule is as expected. The average bond lengths are d(P-Si) = 228.5 pm, H(P-C) — 190.2 pm, d(Si-C) = 186.6 pm, d(C-C) = 151.8 pm and d(C-H) = 94 pm.
	Reference	Z. Naturforsch. 37b, 534—541 (1982); eingegangen am 23. Dezember 1981
	Published	1982
	Keywords	Tetraphosphane, Phosphorus Chain, Crystal Structure
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	Identifier	ZNB-1982-37b-0534
	Volume	37

96	Author	Karl-Friedrich Tebbe, Bernhard Freckmann	Requires cookie*
	Title	Untersuchungen an Polyhalogeniden, V [1]
	Abstract	Darstellung und Kristallstruktur des Tetrammin-palladium(II)-oktaiodids, [Pd(NH3)4]I8 Studies on the Polyhalides, V [1] Preparation and Crystal Structure of [Pd(NH3)4]l8 The new compound [Pd(NH3)4]l8 crystallizes monoclinically in the space group P2i/m with a = 959.0 pm, b = 835.4 pm, c = 1301.1 pm, ß = 103.37° and Z = 2 formula units. The crystal structure has been solved by 'direct methods' and refined to R = 0.057 with 1357 observed reflections. The structure consists of quadratically coordinated cations [Pd(NH3)4] 2+ and planar, Z-shaped and completely ordered octaiodide anions I8 2 ~. According to the sequence of interatomic distances d(I-I) = 295.0 pm, 289.9 pm, 336.2 pm, 279.1 pm, 327.0 pm, 339.3 pm, 273.8 pm the anions may be described as [I3- • I2 • (I~ • I2)]-The iodide-iodine sides (I- • I2) are joined with the distance d(I---I) = 364.1 pm to a slightly bent triiodide chain being part of an octaiodide ribbon ^ [Is 2-]-Next contact spacings between neigh-boring anions start at d(I---I) = 403.7 pm.
	Reference	Z. Naturforsch. 37b, 542—549 (1982); eingegangen am 26. November 1981
	Published	1982
	Keywords	Palladium Complex, Polyhalide, Octaiodide Ion, Iodine Chain, Crystal Structure
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	Identifier	ZNB-1982-37b-0542
	Volume	37

97	Author	P. Gütlich, B. Lehnis, K. Römhild, J. Strähle	Requires cookie*
	Title	Gemischtvalente Bromoaurate(I,III) und ihre Mößbauer-Spektren Mixed Valent Bromo Aurates(I.III) and their Mößbauer Spectra
	Abstract	New nonstoichiometric cesium bromo aurates(I,III) Csi+a;(AuBr4)(AuBr2, Br3,Br)z have been synthesized, in which the almost equally shaped anions AuBro -and Br3~ can inter-change themselves. The compounds crystallize in a disordered cubic perovskite structure with a = 547.5 pm or in a tetragonal superstructure with a 16-fold perovskite cell (a = 1553, c = 1099 pm). The investigations show that other bromoaurates as the previously reported "Cs2AgAuBr6" can contain perceptible amounts of Br3 _ ions also. The IR and 197 Au Mössbauer spectra of the new bromoaurates and of Cs2AuoBr6 are discussed.
	Reference	Z. Naturforsch. 37b, 550—556 (1982); eingegangen am 12. Januar 1981
	Published	1982
	Keywords	Mixed Valent Bromo Aurates(I, III), Synthesis, Structure, Mössbauer Spectra
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	Identifier	ZNB-1982-37b-0550
	Volume	37

98	Author	M. Pušelj, Z. Ban, A. Drašner	Requires cookie*
	Title	On the Crystal Structure of HgZn3
	Abstract	The crystal structure of the intermetallic phase HgZn3 was determined using X-ray single crystal and powder diffraction methods. The phase belongs to the orthorhombic system, most probable space group being Cmc2i, and appears to be isostructural with /S'-Cu3Ti. Under standard preparative conditions a statistical distribution of both atomic species was observed.
	Reference	Z. Naturforsch. 37b, 557—559 (1982); received December 14 1981
	Published	1982
	Keywords	Crystal Structure, Zinc, Mercury, Amalgam
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	Identifier	ZNB-1982-37b-0557
	Volume	37

99	Author	Udo Kunze, Antonios Antoniadis	Requires cookie*
	Title	Phosphinsubstituierte Chelatliganden, IV [1] Neue Diphenylphosphinoformamid-Komplexe des Mangans und Eisens Phosphine Substituted Chelate Ligands, IV [1] New Diphenylphosphino Formamide Complexes of Manganese and Iron
	Abstract	The phosphino and (thio)phosphoryl formamides la, b, 2a-c, 3a, b, 4a, b which were partially unknown are synthesized by various methods, and their reactions with carbonyl-metal halides of manganese and iron are described. The formation of the P,N-and S,N-coordinate chelate complexes, (CO)4MnL (5 a, 8a), is limited to the N-phenyl derivatives la and 4a. With L = 2a, b, the unidentate P-coordination predominates. Thus, the carbonylmetal halide complexes cis-(CO)4Mn(X)L (6a, b: X = CI, 7a, b: X = Br) and 7? 5 -C5H5(CO)Fe(X)L (9a, b: X = I, 10a, b: X = Br) are obtained. Due to the low stability of the formamide complexes, their formation is always accompanied by isocyanate elimi-nation as a side-reaction.
	Reference	Z. Naturforsch. 37b, 560—567 (1982); eingegangen am 17. November 1981
	Published	1982
	Keywords	Chelate Ligands, Phosphino Formamide, Manganese Complexes, Iron Complexes, Isocyanate Elimination
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	Identifier	ZNB-1982-37b-0560
	Volume	37

100	Author	G. Brands, A. Golloch	Requires cookie*
	Title	Schwefel-Stickstoff-Verbindungen, IX [1] Darstellung und spektroskopische Charakterisierung einiger Schwefeldiimide von Elementen der 4. Hauptgruppe Sulfur-Nitrogen Compounds, IX [1] Preparation and Spectroscopical Characterization of Some Sulfur Diimines with Elements of Main Group IV
	Abstract	Sulfurdiimines, Trithiazyltrichloride Compounds of the sulfur(IV) diimines with elements of the main group IVb were prepared. Spectroscopic behaviour and the scope and limitations of preparing sulfurdi-imines from amines and N3S3CI3 are discussed.
	Reference	Z. Naturforsch. 37b, 568—573 (1982); eingegangen am 13. November 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0568
	Volume	37

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