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Facet section ZfN Section B:Volume 035 [X]
Facet Publication Year 1980 [X]

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21	Author	R. S. Tewari, S. K. Suri, K. C. Gupta	Requires cookie*
	Title	Studies on Betaine Decomposition of Arsonium Ylides
	Abstract	Betaine, Arsonium Ylides A systematic study on the nature of decomposition of betaine formed by nucleophilic attack of semistabilized arsonium ylides on thiocarbonyl substrates has been carried out. A series of substituted benzylidenetriphenylarsenanes have been generated from their corresponding salts and condensed with few cyclic thioketones to yield exocyclic olefins as exclusive products. The non-availability of thioepoxides indicates that the mode of decomposition of such type of betaines is quite analogous to the betaine formed by phosphonium ylides. The structure of the products have been assigned by IR and NMR spectral studies.
	Reference	(Z. Naturforsch. 35b, 95—98 [1980]; received June 12 1979)
	Published	1980
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	Identifier	ZNB-1980-35b-0095
	Volume	35

22	Author	RamS. Tewari, DineshK. Nagpal	Requires cookie*
	Title	Transylidation Reactions in Arsonium Ylides
	Abstract	Transylidation Reactions, Arsonium Ylides Some substituted benzylidenetriphenylarsenanes have been generated from their precursors and treated with acid chlorides or acid anhydrides to afford intermediate arsonium salts which in the presence of starting ylides undergo transylidation to give carbonyl stabilized arsonium ylides in fair to good yields. The structures of these stabilized ylides were confirmed on the basis of their spectral data.
	Reference	(Z. Naturforsch. 35b, 99—101 [1980]; received September 11 1979)
	Published	1980
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	Identifier	ZNB-1980-35b-0099
	Volume	35

23	Author	A. M. Dawidar, A. A. Saleh, M. M. Abdel-Malek	Requires cookie*
	Title	Hydroxylation of zl 5 -Steroids with N-Bromosuccinimide to 5a,6/3-Diols Arab Republic of Egypt
	Abstract	N-Bromosuccinimide, Zl 5 -Steroids, Diosgenin, Cholesterol, Stigmastane, Dehydroisoandrosterone The reaction of N-bromosuccinimide with Zl 5 -steroids such as, diosgenin, cholesterol, stigmasterol and dehydroisoandrosterone were studied. It was found that NBS in a solvent mixture of acetone, water and acetic acid (8:1:0.1) oxidises the olefinic bond of all the previous steroidal compounds to the corresponding «ran-sglycollic, 5a,6/?-di-hydroxylic products in about 60% yield at room temperature.
	Reference	(Z. Naturforsch. 35b, 102—106 [1980]; received September 17 1979)
	Published	1980
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0102.pdf
	Identifier	ZNB-1980-35b-0102
	Volume	35

24	Author	Norio Miyoshi, Giiti Tomita	Requires cookie*
	Title	Fluorescein-photosensitized Furan Oxidation in Methanolic and Reversed Micellar Solutions, Part II Kinetic Analysis
	Abstract	The 1,3-diphenylisobenzofuran oxidation was investigated in methanolic and dodecyl-ammonium propionate reversed micellar solutions using fluorescein sodium as photo-sensitizer. The furan oxidation was caused by the singlet oxygen mechanism (Type II). Aniline enhanced remarkably the furan oxidation in methanolic solutions, but inhibited highly this oxidation in the reversed micellar solutions. This enhancement of the furan oxidation was considered to be brought about by the occurrence of a radical mechanism (Type I) besides Type II mechanism. No Type I reaction occurred in the micellar solutions. The rate constants concerning with both reaction processes were evaluated by kinetic analysis, employing various aryl-and alkyl-amines. The reaction mechanism of Type I and the quenching mechanism of singlet oxygen by amines were discussed from the relationship between the rate constants, and the ionization potential of amines and the solvent polarity.
	Reference	(Z. Naturforsch. 35b, 107—111 [1980]; received July 27 1979)
	Published	1980
	Keywords	Singlet Oxygen, Radicals, Fluorescein, Diphenylisobenzofuran, Reversed Micelles
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	Identifier	ZNB-1980-35b-0107
	Volume	35

25	Author	D. Layek, G. C. Papavassiliou	Requires cookie*
	Title	Some New One-dimensional Compounds: Preparation and Optical Properties
	Reference	(Z. Naturforsch. 35b, 112—113 [1980]; received June 7/October 2 1979)
	Published	1980
	Keywords	Raman Spectra, Preparation, Platinum-mixed Valence
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	Identifier	ZNB-1980-35b-0112_n
	Volume	35

26	Author	Rainer Vogel, Hans-Uwe Schuster	Requires cookie*
	Title	Ternäre Verbindungen mit modifizierter Ni2In-Struktur KHgAs (Sb) and KZnAs - Ternary Compounds in a Modified Ni2In-Structure
	Abstract	The compounds KHgAs, KHgSb and KZnAs were prepared and their structures determined by powder and single crystal data. The com-pounds crystallize in a modified Ni2In-type structure, space group P63/mmc-Djfh. The cell parameters are:
	Reference	(Z. Naturforsch. 35b, 114—116 [1980]; eingegangen am 20. September 1979)
	Published	1980
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	Identifier	ZNB-1980-35b-0114_n
	Volume	35

27	Author	(. Ato^cl, =. Li, Gerd Meyer, Ellen Schwan	Requires cookie*
	Title	Tetrachloroaluminate, -ferrate und -gallate
	Abstract	-gallates of formulae A I M III CLi with A* = Cs, Rb, In, Tl, NH4 as well as the high temperature forms of the potassium compounds (KM m Cl4-III) crys-tallize with the baryte type structure. LiM in CLi, NaM III Cl4, and KM^C^-II (M»i = AI, Fe, Ga), isotypic among themselves, belong -dependent on the size of the A+ ion -to three different structure types.
	Reference	(Z. Naturforsch. 35b, 117—118 [1980]; eingegangen am 21. September 1979)
	Published	1980
	Keywords	-Cs, NH4, Tl, In, M in = AI, Fe, Ga) Tetrachloroaluminates, -ferrates and -gallates: AiMi»Cl4 (A 1 = Li-Cs, NH4, Tl, In, M m = AI, Fe, Ga) Ternary Chlorides, Aluminates, Ferrates, Gallates Tetrachloroaluminates, -ferrates and
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	Identifier	ZNB-1980-35b-0117_n
	Volume	35

28	Author	Heinrich Nöth	Requires cookie*
	Title	Lithium-tetrahydroaluminat in Ether: eine NMR-Untersuchung Lithiumtetrahydroaluminate in Ether: an NMR Study
	Abstract	Ether solutions of LiAlH4 have been investigated by 27 Al and 7 Li magnetic resonance in the concentration range 3.75-0.0075 M. The Al-signal shows a fine structure due to Al-H coupling only at concentrations below 0.15 M. The observed chemical shift 27 Al is only slightly concentration dependent. The line width of the 27 A1 signal, which is inversely proportional to T2*, reaches a minimum value at a concentration where the best resolution of the 27 A1 quintet is observed. This, however, is not matched by the 7 Li line width whose minimum value was found at a somewhat higher concentration. The results are consistent with multiple ion formation at the higher concentrations and with an ion pair at low concentrations.
	Reference	(Z. Naturforsch. 35b, 119—124 [1980]; eingegangen am 7. November 1979)
	Published	1980
	Keywords	7 Li NMR, 27 A1 NMR, Relaxation Times, Lithiumtetrahydroaluminate
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	Identifier	ZNB-1980-35b-0119
	Volume	35

29	Author	K. Barlos, Heinrich Nöth	Requires cookie*
	Title	Beiträge zur Chemie des Bors, CVIII [1] Synthese und Konformation yon N.N'-Bis(boryl)-N.N'-dimethylhydrazinen Contributions to the Chemistry of Boron, CVIII [1] Synthesis and Conformation of N,N , -Bis(boryl)-N,N'-dimethylhydrazines N,N'-Bis(methylboryl)-N,N'-dimethyl-hydrazine, N,N'-Bis(dichlor-boryl)-N,N
	Reference	(Z. Naturforsch. 35b, 125—132 [1980]; eingegangen am 10. August 1979)
	Published	1980
	Keywords	-dimethyl-hydrazine, Conformation, NMR Spectra, PE Spectra
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	Identifier	ZNB-1980-35b-0125
	Volume	35

30	Author	DavidW. Allen, IanW. No, PhilipE. Walker	Requires cookie*
	Title	X-ray Structural Study of 5-Phenyl-10,ll-dihydrodibenzo[b,f]phosphepin-5-oxide
	Abstract	Crystals of the title compound are triclinic, a = 8.533(5), b = 11.106(6), c = 8.815(5) A, a = 107.83(6), ß = 104.99(6), y = 81.30(5)°, Z = 2, space group Pi. The structure was determined by multisolution direct methods and electron density methods. Refinement by least-squares techniques gave a final R = 0.081 for the 1753 independent reflections. The molecule adopts a butterfly-type conformation such that the fused phenyl rings are inclined to each other at an angle of 56.8°. The P-0 bond distance is 1.506(4) A; the endocyclic angle at phosphorus is 107.2(3)° and the exocyclic angles vary from 106.5 to 111.9(3)°.
	Reference	Z. Naturforsch. 35b, 133—135 (1980); received October 8 1979
	Published	1980
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	Identifier	ZNB-1980-35b-0133
	Volume	35

31	Author	Klaus Volk, Gerhard Cordier, Ralph Cook, Herbert Schäfer	Requires cookie*
	Title	BaSbTe3 und BaBiSe3 Verbindungen mit BiSe-bzw. SbTe-Schichtverbänden BaSbTe3 and BaBiSe3 Compounds with BiSe-or SbTe-Layer Structures, Respectively
	Abstract	The new compounds BaBiSe3 and BaSbTe3 crystallize in the orthorhombic system, space group P2i2i2i with BaBiSe3: a = 1724 ± 2 pm, b = 1600 ± 2 pm, c = 437.0 ± 0.5 pm; BaSbTe3: a = 1809 ± 2 pm, b = 1694 ± 2 pm, c = 463.5 ± 0.4 pm. BiSeö-or SbTe6-octahedra, resp., are connected by common edges to fourfold strings. These are bound by additional chalcogen atoms to sheets, between which the Ba ions are located.
	Reference	Z. Naturforsch. 35b, 136—140 (1980); eingegangen am 16. Oktober 1979
	Published	1980
	Keywords	Bariumbismutselenide, Bariumantimonytelluride, Crystal Structure
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	Identifier	ZNB-1980-35b-0136
	Volume	35

32	Author	Albrecht Mewis	Requires cookie*
	Title	Ternäre Phosphide mit ThCr2 Si2 -Struktur Ternary Phosphides with the Th(>2Si2 Structure
	Abstract	Ten new compounds with the general formula AB2P2 (A = Ca, Sr, Eu, Ba; B — Cu, Ni, Co, Fe, Mn) have been prepared and their structures determined. They are isotypic and crystallize in the ThCr2Si2 structure (space group I4/mmm) with the following constants: CaCui.75P2
	Reference	Z. Naturforsch. 35b, 141—145 (1980); eingegangen am 23. Oktober 1979
	Published	1980
	Keywords	Intermetallic Compounds, Crystal Structure, Ternary Phosphides
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	Identifier	ZNB-1980-35b-0141
	Volume	35

33	Author	Ertugrul Arpac, Lutz Dahlenburg	Requires cookie*
	Title	Oligophosphin-Liganden, I
	Abstract	Einfache Synthesen der trimethylenverknüpften Triphosphine RP[(CH2)3PPh2]2 und ihrer Vorstufen Ph2P(CH2)3P(H)R (R Ph, Me) Oligophosphine Ligands, I Convenient Syntheses of the Trimethylene-linked Triphosphines RP[(CH2)3PPh2]2 and their Precursors Ph2P(CH2)3P(H)R (R = Ph, Me) The secondary-tertiary diphosphines Ph2P(CH2)3P(H)Ph (2) and Ph2P(CH2)3P(H)Me (3) have been prepared from Ph2P(CH2)3Cl (1) and NaP(H)Ph or LiP(H)Me, respectively. Metallation of 2 and 3 with n-butyl lithium and further reaction of the lithio-derivatives with one equivalent of 1 yields PhP[(CH2)3PPh2]2 (4) and MeP[(CH2)3PPh2]2 (5). The tritertiary phosphines 4 and 5 have likewise been obtained from RPLi2 (R = Ph, Me) and two equivalents of 1. The synthesis of 4 from PhPCl2 and two equivalents of the Grignard reagent of 1 is also reported. Each of the phosphines 1-5 was characterized by NMR and mass spectroscopy.
	Reference	Z. Naturforsch. 35b, 146—152 (1980); eingegangen am 26. Oktober 1979
	Published	1980
	Keywords	Secondary-tertiary Diphosphines, Tritertiary Phosphines, Preparation, NMR Spectra, Mass Spectra
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	Identifier	ZNB-1980-35b-0146
	Volume	35

34	Author	Gisela Beindorf, Joachim Strähle, Wolfgang Liebelt, Frank Weller	Requires cookie*
	Title	Die Kristallstmktiir des Iodnitren-Komplexes C13V = N-I Crystal Structure of the Iodonitrene Complex, ClaV-N-I
	Abstract	CI3VNI crystallizes isotypically with CI3VNCI in the triclinic space group P I. The crystals contain dimeric units which are formed via chlorine bridges. The VNI group is linear with an sp-hybridized nitrogen and a V-N triple bond, (angle VNI = 163°, V-N = 165 pm, N-I = 193 pm). A short contact distance of 307 pm between the I atom and a neighbouring CI atom is observed.
	Reference	Z. Naturforsch. 35b, 153—156 (1980); eingegangen am 31. Oktober 1979
	Published	1980
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	Identifier	ZNB-1980-35b-0153
	Volume	35

35	Author	Armin Weiss, JinHo Choy	Requires cookie*
	Title	Intercalationskomplexe von Eisen(ni)oxidchlorid FeOCl mit Alkanolen Intercalation Complexes of Iron(III) Oxide Chloride FeOCl with Alkanols Iron(III) Oxide Chloride Intercalation Complexes, Alkanol Intercalates, Thermal Transitions in Intercalation Complexes
	Abstract	n-Alkanol intercalation complexes of iron(III) oxide chloride FeOCl • a n-CzH^+iOH (x = 1-18) are obtained from the amine intercalates by replacement reaction or by a "propping-open" procedure. The alkanol content is slightly variable with a — 0.54 in the alkanol richest phases and 0.46 after heating to 110 °C. In the alkanol richest phases the long chain alkanol molecules (x < 12) form bilayers in the interlayer region of the FeOCl with the major part of each chain in all trans conformation and perpendicular to the layers of the host lattice. The complexes undergo a series of reversible phase transforma-tions on heating. The arrangement of short chain alkanols (x < 6) is less regular. At higher temperatures (> 130 °C) condensation to FeO(OR)nCli-n is observed. The alkoxy-lated derivatives are also capable of forming intercalation complexes.
	Reference	Z. Naturforsch. 35b, 157—163 (1980); eingegangen am 17. Oktober 1979
	Published	1980
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	Identifier	ZNB-1980-35b-0157
	Volume	35

36	Author	Walter Maringgele	Requires cookie*
	Title	mit mehrfunktionellen Molekülen, XXV [1] Thioureidoborane und Isothioureidoborane Reactions of Metal and Metalloid Compounds with Polyfunctional Molecules, XXV [1] Thioureidoboranes and Isothioureidoboranes
	Abstract	N,N',N'-Triorganyl-N-trimethylsilylthioureas react with halogeno diorganyl boranes to yield the N,N',N'-organyl-thioureidoboranes 1-7 and isothioureidoboranes 8-15. 10-15 are intramolecularly associated. The compounds are characterized analytically and spectroscopically (NMR: !H, 13C, HB; MS; IR).
	Reference	Z. Naturforsch. 35b, 164—169 (1980); eingegangen am 14. September/22. Oktober 1979
	Published	1980
	Keywords	Trimethylsilylthioureas, Halogendiorganylboranes, Thioureidoboranes, Isothioureidoboranes, Intramolecular Coordination
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	Identifier	ZNB-1980-35b-0164
	Volume	35

37	Author	Winfried Fichtner, Alarich Weiss	Requires cookie*
	Title	Charge Distribution and Structures of Halogenogallates and Halogenoaluminates of the Type Me I Me III X4, Me T Me2 m X7, and C6H6 CUA1C14. An NQR Investigation ( 35 C1, 79 Br, 127 I, 63 Cu, 69 Ga)
	Abstract	In polycrystalline samples of the halogenoaluminates Me I AlCl4 (Me 1 — Cu, Ag), CuAlBr4, C6H6 • CUA1C14 and halogenogallates CuGaCl4, Me I GaBr4 (Me 1 = Cu, Na, K, NH4, Rb, Cs, Ga), Me T GaI4 (Me* = Cu, Cs), Me^aaBr? (Me* = K, NH4, Rb, Cs), CsGa2I7, the halogen, Me 111 , and Cu-NQR spectra were studied, partly as a function of temperature. Phase transformations are found in NH4GaBr4, CsGaBr4, and RbGa2Br7. The spectro-scopic results are discussed and a charge distribution analysis is given, based on the Townes-Dailey theory. Symmetry properties of the solids are pointed out in connection with multiplicity and intensity ratios of the NQR spectra.
	Reference	Z. Naturforsch. 35b, 170—181 (1980); received July 11/November 26 1979
	Published	1980
	Keywords	NQR Spectra, Solid State Chemistry, Halogenogallates, Halogenoaluminates
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	Identifier	ZNB-1980-35b-0170
	Volume	35

38	Author	J. Schmitzer, S. Gab, M. Bahadir, F. Körte	Requires cookie*
	Title	Photomineralisierung chlorierter Alkane, Alkene und Aromaten an Kieselgel Photomineralization of Chlorinated Alkanes, Alkenes and Aromatics on Silica Gel
	Abstract	The photodegradation to C02 (photomineralization) of chlorinated alkanes, alkenes and aromatics adsorbed on silica gel was examined. In addition to CO2, CI" and Cl2 were determined. The degradation depends considerably on the activity of the surface and decreases in the order alkenes > alkanes > aromatics.
	Reference	Z. Naturforsch. 35b, 182—186 (1980); eingegangen am 6. September 1979
	Published	1980
	Keywords	Photomineralization, Degradation on Silica Gel, Chlorinated Alkanes, Alkenes, Aromatics
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	Identifier	ZNB-1980-35b-0182
	Volume	35

39	Author	FrankH. Köhler	Requires cookie*
	Title	NMR-Spektroskopie an paramagnetischen Komplexen, XX [1] Störung der 13 C-und ^-Spektren dia-und paramagnetischer Moleküle durch radikalische Metallocene NMR Spectroscopy on Paramagnetic Complexes, XX [1] Errors in the 13 C and Spectra of Dia-and Paramagnetic Molecules Introduced by Metallocene Radicals
	Abstract	Paramagnetic Metallocenes, Paramagnetic 13 C/ 1 H NMR, Susceptibility Shifts 13 C and H NMR spectra of ethyl and «-butyl substituted cobaltocenes dissolved in toluene, benzene and acetone are strongly dependent on concentration and temperature. With increasing metallocene concentration and decreasing temperature almost all 13 C and H signals of the metallocenes as well as those of the solvents are shifted high field to a different degree. The additional shift is most pronounced for substituted aromatic ring carbons giving rise to a seriously disturbed signal ordering. Similar behavior is found for substituted vanadocenes and nickelocenes dissolved in toluene or THF. The effect is attributed to preferred mutual orientation of metallocene and solvent molecules thus inducing additional shifts in the metallocene themselves and in the solvent. From the results it is concluded that neither dipolar nor Fermi contact interaction can satisfactorily account for the effect. Instead it originates from susceptibility shifts which may not be ruled out by internal referencing and which are due to anisotropy and orientation of the molecules. For consequence quantitative comparison of paramagnetic NMR shifts from highly anisotropic molecules is only meaningful if concentrations are known. Measure-ment of magnetic moments may lead to errors.
	Reference	Z. Naturforsch. 35b, 187—194 (1980); eingegangen am 30. Oktober 1979
	Published	1980
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	Identifier	ZNB-1980-35b-0187
	Volume	35

40	Author	Lutz Rösch, Gerald Altnau	Requires cookie*
	Title	Darstellung und Eigenschaften von Natrium-und Kaliumtetrakis(trimethyl8ilyl)aluminat-Komplexen Preparation and Properties of Sodium and Potassium Tetrakis(trimethylsilyl)aluminate Complexes
	Reference	Z. Naturforsch. 35b, 195—199 (1980); eingegangen am 31. Oktober 1979
	Published	1980
	Keywords	Organosilyl Metal Compounds, Sodium Aluminate Complexes, Potassium Aluminate Complexes
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	Identifier	ZNB-1980-35b-0195
	Volume	35

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