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Facet Publication Year 1983 [X]
Facet section ZfN Section B [X]

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1

1	Author	Rüdiger Kniep, Lutz Körte, Dietrich Mootz	Requires cookie*
	Title	Kristallstrukturell von Verbindungen A2X2 (A = S, Se; X = Cl, Br) Crystal Structures of Compounds A2X2 (A = S, Se; X = Cl, Br)
	Abstract	The crystal structures of compounds A2X2 (A = S, Se; X = Cl, Br) contain molecules X-A-A-X with dihedral angles between 83.9° and 87.4°. Three different types of molecular packing are realized: S2CI2, S2Br2 (a-Se2Br2) and /?-Se2Br2(Se2Cl2). Details of molecular geometries as well as crystal structures are discussed.
	Reference	(Z. Naturforsch. 38b, 1—6 [1983]; eingegangen am 20. August 1982)
	Published	1983
	Keywords	Sulfur(I) Halides, Selenium(I) Halides, Crystal Structure
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0001.pdf
	Identifier	ZNB-1983-38b-0001
	Volume	38

2	Author	Herman Winter, JohanC. Van De Grampel	Requires cookie*
	Title	Derivatives of NPCI^NSOCl), and (NPC12)2NS0C1, Part XXI [1]. The Synthesis of a Spiro Phosphazene Derivative of NPCl^NSOPh^
	Abstract	The preparation of the spirocyclic compounds eis-and £rans-NP[(NPCl2)2NCH3](NSOPh)2 from eis-and Zrans-NPCl2(NSOPh)2 is described as well as the synthesis of the inter-mediates. The 31 P NMR data are discussed.
	Reference	(Z. Naturforsch. 38b, 7 [1983]; received August 23 1982)
	Published	1983
	Keywords	Phosphorus-Sulfur-Nitrogen Heterocycles, Spirocyclic Derivatives, NMR Spectra
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0007.pdf
	Identifier	ZNB-1983-38b-0007
	Volume	38

3	Author	PeterG. Jones, GeorgeM. Sheldrick, Einhard Schwarzmann, Andreas Vielmäder	Requires cookie*
	Title	Darstellung und Kristallstruktur von Di-gold(III)bis(selenit)oxid, Au2(Se03)20 Preparation and Crystal Structure of Di-gold(III) Bis(selenite) Oxide, Au2(Se03)20
	Abstract	Au2(Se0s)20 was prepared from gold and excess selenic acid in a sealed tube at 533 K. The crystal structure [P6a2, a = 659.2(2), b = 1183.7(3), c = 399.8(1) pm, Z = 2,R = 0.087] was determined; gold atoms are bridged by oxide ions (lying on twofold axes) and selenite ions. The extended structure consists of polymeric layers parallel to the ««/-plane. The light atom positions are inaccurate because of the presence of a heavy atom in a polar space group.
	Reference	(Z. Naturforsch. 38b, 10—11 [1983]; eingegangen am 20. September 1982)
	Published	1983
	Keywords	Crystal Structure, Sealed-tube Synthesis, Gold(III), Selenite, Oxide
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0010.pdf
	Identifier	ZNB-1983-38b-0010
	Volume	38

4	Author	Kurt Klepp, Weif Bronger	Requires cookie*
	Title	Na6CoS4 -ein Thiocobaltat mit isolierten CoS4-Anionen Na6CoS4 -A Thiocobaltate with Isolated C0S4 Anions
	Abstract	NaeCoS4 crystallizes in the hexagonal space group P 63111c with a —890.9(2) pm and c = 687.8(2) pm, Z = 2. The crystal structure was determined from four circle diffracto-meter data and refined to a conventional .ff-value of 0.020. NaöCoS4 is isotypic with NaeZnC>4. The crystal structure can be derived from a h.c.p. arrangement of S atoms. Co atoms occupy tetrahedral voids, the resulting CoS4-tetrahedra being almost regular with an average Co-S distance of 235 pm. Na atoms occupy tetrahedral and octahedral voids in the ratio 1:1.
	Reference	(Z. Naturforsch. 38b, 12—15 [1983]; eingegangen am 27. August 1982)
	Published	1983
	Keywords	Crystal Structure, Ternary Chalcogenides, Cobalt Compounds
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0012.pdf
	Identifier	ZNB-1983-38b-0012
	Volume	38

5	Author	W. S. Sheldrick	Requires cookie*
	Title	Characterisation of a Binary Transition Metal Complex of a Purine 3 -Nucleotide, {[Cua(3 -GMP)2(3 -GMPH)2(H20)5] 7 H20}". [1] Phosphate-only Binding of Copper(II)
	Abstract	Guanosine 3'-Monophosphate, Copper(II) Complex, Phosphate-only Binding, X-ray {[Cu3(3'-GMP)2(3'-GMPH)2(H20)5] • 7 H20}" (1) was isolated from an aqueous solution of Cu(N03)2 and guanosine 3'-monophosphate at a pH of 4.4. 1 is monoclinic space group C 2 with a = 29.140(7), b = 6.865(5), c = 16.980(7)Ä, ß = 90.31(3)°, Z = 2, Dc = 1.81 g -cm-". The structure was refined to R — 0.065 with i?w = 0.060 for 2642 independent reflections. It is disordered about a crystallographic diad axis with one of the copper atoms Cu(2) sited on this axis. This and the other independent copper atom Cu(l) both display square pyramidal geometries. Cu(l) binds N(7) of a guanine base, two phosphate O atoms of nucleotide molecules not symmetry-related to one another and two water oxygens. The guanine base involved in this coordination adopts a syn-conformation relative to the ribose ring with = —118.5°. Cu(2) is coordinated by four phosphate O atoms of different nucleotide molecules and one water oxygen. The second guanine base, which is not involved in metal binding, displays the anZi-conformation relative to the ribose ring.
	Reference	(Z. Naturforsch. 38b, 16—19 [1983]; received September 6 1982)
	Published	1983
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0016.pdf
	Identifier	ZNB-1983-38b-0016
	Volume	38

6	Author	Bernt Krebs, Marita Hucke, Michael Hein, Andreas Schäffer	Requires cookie*
	Title	Monomere und dimere Oxotrihalogenoselenate(IV): Darstellung, Struktur und Eigenschaften von [As(C6H5)4]SeOCl3 und [N(C2H5)4]SeOCl3 Monomerie and Dimeric Oxotrihalogenoselenates(IV): Preparation, Structure and Properties of [As(C6H5)4]SeOCl3 and [N(C2H5)4] SeOCl3
	Abstract	The monomeric SeOCl3~ ion, which can be prepared as the tetraphenylarsonium salt from SeOCl2 and As(C6Hs)4C1, was structurally characterized by a low-temperature single crystal X-ray diffraction analysis. [As(C6Hs)4]SeOCl3 is monoclinic, space group P2i/c, with a = 9,332(3), b = 13,761(4), c = 18,985(6) A, ß = 110,97(3)° (at —135 °C), Z = 4; it contains a novel type of y>-trigonal bipyramidal oxotrichloroselenate(IV) anion which is not associated to dimers or polymer chains as in known structures. The equatorial positions are occupied by doubly bonded oxygen (Se-O 1,601(3) Ä) and by one Cl (Se-Cl 2,234(1) A), the axial Se-Cl bonds (2,430(1) and 2,475(1) A) being significantly longer. [N(C2H5)4]SeOCl3, which was obtained as crystals by oxidation of trichloroselenate(II), is triclinic, space group P I, with a = 10,607(3), b = 8,950(2), c = 8,862(2) A, a = 119,79(2)°, ß = 101,07(2)°, y = 96,28(2)°, Z = 2. The X-ray structure analysis shows the anions to be present as centrosymmetric dimers Se202Cl6 2 " like in the [P(CeH5)4] + salt, with two tetragonal SeOCU pyramids linked through a C1---C1 edge and the lone pairs trans to the axial Se-0 bonds (1,589(4) A). Se-Cl bond lengths are 2.270(1) and 2,351(2) A (terminal); 2,698(1) and 2,920(1) A (bridging). The results show that the nature of the reaction products of the Lewis acid SeOCl2 with halogenides as bases changes very sensitively with small variations in cations and environment. The vibrational spectra are discussed.
	Reference	(Z. Naturforsch. 38b, 20—29 [1983]; eingegangen am 23. September 1982)
	Published	1983
	Keywords	Oxohalogenoselenates, Crystal Structure, Selenium, Inert Electron Pair, Selenium Oxychloride
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0020.pdf
	Identifier	ZNB-1983-38b-0020
	Volume	38

7	Author	W. Petz, S. Kremer	Requires cookie*
	Title	Darstellung und Eigenschaften von Fe[ClC(COOEt)2]3 Synthesis and Properties of Fe[ClC(COOEt)2]3
	Abstract	Magnetism, EPH, Iron(3 +) Complex, Oxidation Fe2(CO)9 reacts with Cl2C(COOEt)2 to give the paramagnetic complex Fe[ClC(COOEt)2]3 in high yield. The magnetic and spectroscopic properties of this complex are discussed.
	Reference	(Z. Naturforsch. 38b, 30—33 [1983]; eingegangen am 15. Juni 1982)
	Published	1983
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	Identifier	ZNB-1983-38b-0030
	Volume	38

8	Author	Lutz Rösch, Gerald Altnau, Carl Krüger, Y.-H Tsay	Requires cookie*
	Title	Röntgenstrukturuntersuchungen an Trimethylsilylaluminiumverbindungen X-Ray Crystal Study of Trimethylsilylaluminium Compounds
	Abstract	Structure, Tris(trimethylsilyl)aluminium, Sodium-tetrakis(trimethylsilyl)aluminate The crystal and molecular structures of three trimethylsilylaluminium compounds -tris(trimethylsilyl)aluminium coordinated to a diethylether molecule (1), sodium-tetrakis-(trimethylsilyl)aluminate coordinated to two toluene molecules (2 b) and unsolvated sodium-tetrakis(trimethylsilyl)aluminate (2 a) -have been determined by X-ray structure analysis. In all three compounds the aluminium is tetrahedrally coordinated, the Al-Si-distances lying between 2.44 and 2.49 A. (1) is monomeric and (2a) and (2b) form linear chains resulting from contact-ion pair interactions.
	Reference	(Z. Naturforsch. 38b, 34—41 [1983]; eingegangen am 14. September 1982)
	Published	1983
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0034.pdf
	Identifier	ZNB-1983-38b-0034
	Volume	38

9	Author	Ramesh Kapoor, Ramneek Sharma	Requires cookie*
	Title	Anhydrous Chromium(III) Carboxylates: Reactions of Cr03 with Carboxylic Acid Anhydrides
	Abstract	Chromium(VI) oxide reacts with excess of carboxylic acid anhydrides [(RC0)20 where R = CH3, C2H5, n-C3H7 and CHCI2] to give pure chromium(III) carboxylates. Their IR and 1H NMR spectra suggest the presence of two different types of carboxylate groups. Magnetic susceptibility and absorption spectra favour an octahedral geometry around Cr.
	Reference	(Z. Naturforsch. 38b, 42—44 [1983]; received August 28 1982)
	Published	1983
	Keywords	Anhydrous Chromium(III) Carboxylates, Chromium(VI) Oxide, Carboxylic Acid Anhydrides, IR Spectra, Magnetic Moment
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0042.pdf
	Identifier	ZNB-1983-38b-0042
	Volume	38

10	Author	Angelika Sebald, Bernd Wrackmeyer, Wolfgang Beck	Requires cookie*
	Title	Kernresonanzspektroskopische Untersuchungen OH-, 13 C-, 31 P-, 195 Pt-NMR) an Alkinyl-Komplexen von Pt n , Pd n und Ni" Nuclear Magnetic Resonance ^H-, 13 C-, 31 P-, 195 Pt-NMR)-Studies of Alkynyl Derivatives of Pt 11 , Pd 11 and Ni 11
	Abstract	The NMR parameters (X H, 13 C, 31 P, 195 Pt) of compounds of the type eis-and trans-[M(C=C-R)2(PR'3)2] (M = Ni, Pd, Pt) are reported. The chemical shifts <5 13 C (M-C=C; R) and <5 195 Pt (together with UV data) indicate the presence of jz-backbonding from the metal into the orbitals. This also explains some unusual features of the coupling constants J(= 13 C 1 H), J(i 3 C= 13 C) and J(195 Pt 13 C=). The NMR parameters reflect an increase in the amount of yr-backbonding for Pt < Pd < Ni.
	Reference	(Z. Naturforsch. 38b, 45—56 [1983]; eingegangen am 1. Oktober 1982)
	Published	1983
	Keywords	Alkynyl Ptn, Pdn-, Nin-complexes, Multinuclear NMR
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0045.pdf
	Identifier	ZNB-1983-38b-0045
	Volume	38

11	Author	Hans Hartl, Irene Brüdgam, Farbod Mahdjour-Hassan-Abadi	Requires cookie*
	Title	Synthese und Strukturuntersuchungen von Iodocupraten(I): II. Diiodocuprate(I) RCuI2 mit isoherten Ketten ^ [Cul4 2~] * R 1 = N-Methylpyridinium, R 2 = Dimethyl ( 3 -dimethylamino -2 -aza -2 -propenyliden ) ammonium [1] Syntheses and Structure Analyses of Iodocuprates(I): II. Diiodocuprates(I) RCUL2 with Isolated Chains [CULI/2~]; R 1 = N-Methylpyridinium, R 2 = Dimethyl(3-dimethylamino-2-aza-2-propenyliden) Ammonium
	Abstract	N-Methylpyridinium-diiodocuprate(I), CßHgNCuI^ and dimethyl(3-dimethylamino-2-aza-2-propenyliden)ammonium-diiodocuprate(I), C6H14N3CUI2, are obtained by reacting Cu with C6H8NI3 or C6H14N3I3 in acetone. Both compounds are built up by the organic cations and chains of edge sharing tetrahedra<jo[Cul4/2-]. The iodocuprate(I) anions are in intimate contact with the cations via intermolecular I • • • C interactions. Though nearly the same average Cu-I distance of 267.2 or 268.2 pm was found for both iodocuprate(I) anions there are different Cu-Cu distances (301-354 pm).
	Reference	(Z. Naturforsch. 38b, 57—61 [1983]; eingegangen am 30. September 1982)
	Published	1983
	Keywords	Diiodocuprates(I), Synthesis, Crystal Structure
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	Identifier	ZNB-1983-38b-0057
	Volume	38

12	Author	Hubert Schmidbaur, Stefan Schnatterer, KailashC. Dash, ArefA M Aly	Requires cookie*
	Title	Gold(I)-Bis(
	Abstract	diphenylphosphino)amid und einige Gold(I)-Bis(diarylphosphino)methanide mit sterisch anspruchsvollen Arylsubstituenten Gold(I)-bis(diphenylphosphino)amide and Some Gold(I)-bis(diarylphosphino)methanides with Bulkyl Aryl Substituents Intensely yellow coloured, insoluble gold(I)-bis(diarylphosphino)amides, [(CeH^P^NAu, 1, is obtained from lithiated bis(diphenylphosphino)amine and AuCl complexes of tertiary phosphines. 1 is assigned a dimeric eightmembered ring structure on the basis of its 197 Au-Mößbauer spectrum and of a direct analogy with the corresponding bis(phosphino)methanide complexes, whose structure has recently been confirmed by X-ray diffraction.
	Reference	(Z. Naturforsch. 38b, 62—66 [1983]; eingegangen am 16. September 1982)
	Published	1983
	Keywords	Gold Compounds, Metallocycles, Phosphino-amides, Phosphino-methanides, Steric Effects
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0062.pdf
	Identifier	ZNB-1983-38b-0062
	Volume	38

13	Author	Werner Sieber, Mathias Wolfgruber, Dietmar Neugebauer, Olli Orama, FritzR. Kreißl	Requires cookie*
	Title	Übergangsmetallketen-Verbindungen, XII [1] Darstellung und Struktur von ?f-C5H5(CO)2 [P(CH3)3]W-C = C-C3H5 Compounds of Transition Metal Ketenes, XII [1] Synthesis and Structure of j?5-C5H5(CO)2[P(CH3)3]W-C =C-C3H5
	Abstract	Transition Metal-Substituted Acetylene, X-ray Dicarbonyl(ry 5 -cyclopentadienyl)(^ 1 -cyclopropylketenyl)(trimethylphosphane)tungsten reacts with carbon monoxide under reduction of the ketene moiety forming a (T-bonded acetylene compound. Reaction conditions, spectroscopic data and the X-ray structure of the new compound are reported. Übergangsmetallsubstituierte Ketene des Typs
	Reference	(Z. Naturforsch. 38b, 67—70 [1983]; eingegangen am 7. Oktober 1982)
	Published	1983
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	Identifier	ZNB-1983-38b-0067
	Volume	38

14	Author	Walter Maringgele	Requires cookie*
	Title	Neue Synthesewege zu cyclischen N-Silylharnstoffen und thioharnstoffen Reactions of Metal and Metalloid Compounds with Polyfunctional Molecules, XXXVII [1] New Syntheses of Cyclic N-Silylureas and -thioureas
	Abstract	N-Silylated Ureas and Thioureas, Silicon Tetrachloride, Bis(dimethylamino)dimethylsilane N,N'-Diorganylureas react with silicon tetrachloride to give the l,3,5-triaza-2-silacyclo-hexan-4,6-diones 1-4, in case of N,N'-dicyclohexylurea to give dicyclohexylcarbodiimide. By reacting bis(diethylamino)dimethylsilane with N,N'-diorganylureas and thioureas, resp., one obtains l,3,5-triaza-2,4-disilacyclohexan-6-ones 6, 10, 13-15, l-oxa-3,5-diaza-6-silacyclohexan-4-ones 5, 9, l,3,5-triaza-2-silacyclohexan-4,6-diones 7, 11, 1,3-dioxa-5-aza-2,6-trisilacyclohexanes 8,12, l,3,5-triaza-2,4-disilacyclohexan-6-thiones 16-25 or the organylamino-diethylamino-dimethylsilanes 26-28. The compounds were characterized analytically and spectroscopically.
	Reference	(Z. Naturforsch. 38b, 71—80 [1983]; eingegangen am 30. August 1982)
	Published	1983
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0071.pdf
	Identifier	ZNB-1983-38b-0071
	Volume	38

15	Author	Karl Wieghardt, Ursula Bossek, Martina Guttmann, Johannes Weiss	Requires cookie*
	Title	Metallkomplexe der Liganden
	Abstract	1.4.7-Triazacyclononan-N.N .N -tris-2-ethansulfonat (TES) und 1.4.7-Triazacyclononan-N.N' .N'' -trisethylacetat (TEA). Die Kristallstrukturen von Na[Ni(TES)(H20)] • 5 H20 und Na[Cu(TES)] • 3 H20 Transition Metal Complexes Containing the Ligands 1,4,7-Triazacyclononane-N,N',N"-tris-2-ethanesulfonate (TES) and l,4,7-Triazacyclononane-N,N , ,N"-tris-ethylacetate (TEA). The Crystal Structures of Na[Ni(TES) (H20)] • 5H20 and of Na[Cu(TES)] • 3H20 The syntheses of two new, potentially hexadentate ligands with an N3O3 donor set is reported: l,4,7-triazacyclononane-N,N , ,N"-tris-2-ethanesulfonate (TES) and 1,4,7-tria-zacyclononane-N,N',N"-tris-ethylacetate (TEA). Complexes of the divalent transition metals Co(II), Ni(II), Cu(II) containing these ligands have been prepared. The kinetics of the reactions of [Co n (TEA)H20] 2 + and [Co II (TCTA)]-(TCTA= 1,4,7-triazacyclononane-N^^N'^tris-acetate) with [Fe m (CN)6] 3 ~, respectively, have been measured. A stable binuclear [Co(TEA)(CN)6Fe]~ species has been characterized in solution whereas the reaction of [Co(TCTA)]-with [Fe(CN)6] 3 -yields [Co in TCTA] and [Fe(CN)6] 4 -via an outer-sphere electron transfer reaction (k = 5,9 x 10 3 1 mol -1 sec -1 ; 25 °C, I = 0,26 M). Na[Ni(TES)H20] • 5H20 crystallizes in the triclinic space group P I (C^-No 2) with cell constants a = 806,7(4), b = 1468,4(8), c = 2317,9(8) pm, a = 72,36(4)°, ß = 83,48 (3)°, y = 81,99(4)°, and Z = 4. The nickel(II) center is in a distorted octahedral environment of a pentadentate TES ligand (N3Ü2)_and a coordinated H20. Na[Cu(TES)] 3H20 crystal-lizes in the triclinic space group P I (C^-No 2) w T ith cell constants a = 747,3(3), b — 1082,6(5), c = 1459,3(9) pm, a = 81,13(5)°, ß = 84,75(4)°, y = 79,39(3)°, and Z = 2. The copper(II) center is in a distorted quadratic pyramidal environment of a pentadentate TES ligand. Each of the complex anions contains one uncomplexed CH2-CH2-SC>3 _ group.
	Reference	(Z. Naturforsch. 38b, 81—89 [1983]; eingegangen am 27. September 1982)
	Published	1983
	Keywords	Crystal Structure, O-Coordinated R-S03-group, Metal Complexes
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0081.pdf
	Identifier	ZNB-1983-38b-0081
	Volume	38

16	Author	Monomeres, Helmut Endres, Nihat Gene, Dietrich Nöthe	Requires cookie*
	Title	Oxamidoximkomplexe des Kupfers: Structures and EPR Spectroscopic Properties
	Abstract	Chloro(oxamidoximato)(oxamidoxim)kupfer(II) und polymeres Dichloro(oxamidoxim)kupfer(II). Strukturen und EPR spektroskopische Eigenschaften Oxamide Oxime Complexes of Copper(II): Monomeric Chloro(oxamidoximato)(oxamidoxim)copper(II) and Polymerie Dichloro(oxamidoxim)copper(II). CU(C2H6N402)(C2HSN402)C1 (1) crystallizes in the monoclinic space group P2i/c, a = 8.191(4), b = 10.746(3), c = 13.340(7) Ä, ß = 104.94(4)°, V = 1134.5 A 3 , Z = 4, dc = 1.96 gem -3 , final Rw = 0.029 for 1785 reflections. In the monomeric complex molecules Cu is coordinated in the shape of a square pyramid with Cl at the apex. In the basal plane only one intramolecular H bridge exists. Cu(C2HeN402)Cl2 (2), crystallizes in the monoclinic space group Pc, a = 7.708(7), b = 3.751(1), c= 13.377(12) Ä, ß = 105.97(4)°, V = 371.8Ä 3 , Z = 2, dc = 2.25 gem" 3 , final Rw — 0.070 for 903 reflections. The stacking of the nearly planar complex units along b leads to a polymeric structure where Cu is additionally coordinated by a Cl atom, and shows a loose interaction with an oxime N atom of an adjacent monomer. The EPR signal intensity shows Curie-Weiss behaviour in the temperature range 110 K-420 K.
	Reference	(Z. Naturforsch. 38b, 90—95 [1983]; eingegangen am 4. Oktober 1982 1)
	Published	1983
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	Identifier	ZNB-1983-38b-0090
	Volume	38

17	Author	Wilfried Peters, Gerhard Hagele	Requires cookie*
	Title	Kernresonanzspektroskopische Untersuchungen an Organophosphorverbindungen - Thiophosphorylbromide RR P(S)Br: R,R =CH3, C2H5, f-C3H7, t-C4H9 NMR Studies on Organophosphorous Compounds -Thiophosphorylbromides RR'P(S)Br
	Abstract	NMR spectra of dialkylthiophosphoryl bromides RR'P(S)Br are analyzed. Methods are demonstrated for C2H5(t-C3H7)P(S)Br. A correlation between <53ip in the 31 P NMR spectra and the number of y3-methyl groups is discussed.
	Reference	(Z. Naturforsch. 38b, 96—102 [1983]; eingegangen am 23. August 1982)
	Published	1983
	Keywords	Dialkylthiophosphoryl Bromides, NMR Spectra, X H NMR Spectra, 31 P NMR Spectra
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0096.pdf
	Identifier	ZNB-1983-38b-0096
	Volume	38

18	Author	Hans Zimmer, Madhusudan Jayawant, Adel Amer, BruceS. Ault	Requires cookie*
	Title	Reactions of Alkylamino-and Dialkylaminotriphenylphosphonium Halides with Halogens and Interhalogen Compounds; Formation of Alkylaminotriphenylphosphonium Polyhalides
	Abstract	Alkylamino-and cycloalkylaminotriphenylphosphonium halides react with elemental halogens or interhalogen compounds to afford alkylamino-or cycloalkylaminotriphenyl-phosphonium trihalides. The stability of these trihalides depends on the cation as well as the trihalide anion. The assignment of a trihalide structure to these compounds was based on elemental analysis and on IR-and Raman spectroscopic evidence. Most stable are the tribromide and [1X2]° salts. During all reactions involving N-alkylamino-and N-cyclo-alkylaminotriphenylphosphonium halides and elemental halogens an N-halogenation of the cation was not observed.
	Reference	(Z. Naturforsch. 38b, 103—107 [1983]; received September 20 1982)
	Published	1983
	Keywords	Halides, IR Spectra, Raman Spectra
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0103.pdf
	Identifier	ZNB-1983-38b-0103
	Volume	38

19	Author	Jürgen Schallenberg, Eckart Meyer	Requires cookie*
	Title	Simple Syntheses of 3-Substituted Indoles and their Application for High Yield 14 C-Labelling
	Abstract	Methods are described which allow the synthesis of several plant indole alkaloids and their metabolites at different scales. Compounds synthesized include gramine (1) (3-di-methylaminomethylindole) which is directly derived from indole, while its biosynthetic precursors 3-aminomethylindole (3) and 3-methylaminomethylindole (2) as well as indole-3-carboxylic acid (7) are synthesized via indole-3-aldehyde (6). Slight changes of the experimental conditions allow syntheses with high yields not only at the molar but also at the /imolar level. This is extremely useful when isotope labelled compounds of high specific radioactivity are required for studies of plant metabolism.
	Reference	(Z. Naturforsch. 38b, 108—112 [1983]; received July 22 1982)
	Published	1983
	Keywords	3-Substituted Indoles, Indole Alkaloids, UV Spectra, MS Spectra, 1 H NMR spectra
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0108.pdf
	Identifier	ZNB-1983-38b-0108
	Volume	38

20	Author	Wolf-Walther Du Mont, Mario Grenz	Requires cookie*
	Title	Bis(trimethylsiloxy)tin(II): A Heterosiloxane as Soft Ligand
	Abstract	Contrary to earlier reports the reaction of sodium trimethylsilanolate with stannous chlo-ride does not yield bis(trimethylsiloxy)tin(II) (1) but a polynuclear compound of the type Sn20(0SiMe3)2 (2). 1 is obtained from the reac-tion of stannocene with trimethylsilanole. The compound is a dimer that gives rapid exchange reactions of terminal and bridging trimethylsil-oxy groups in inert organic solvents.
	Reference	(Z. Naturforsch. 38b, 113—114 [1983]; eingegangen am 10. September 1982)
	Published	1983
	Keywords	Oxastannylenes, Heterosiloxanes, NMR Spectra
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	TEI-XML for	default:Reihe_B/38/ZNB-1983-38b-0113_n.pdf
	Identifier	ZNB-1983-38b-0113_n
	Volume	38

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