| 182 | Author
| Z. Naturforsch | Requires cookie* | | Title
|  | | | Abstract
| Single crystals of (Me3Sn)3CCN were obtained by the reaction of tris(trimethylstannyl)amine with boiling acetonitrile in the presence of potas sium fluoride and trimethylarsane. The compound has been characterized by IR spectroscopy and by a crystal structure determination. Space group | | |
Reference
| Z. Naturforsch. 52b, 145—148 (1997); eingegangen am 7. Oktober 1996 | | |
Published
| 1997 | | |
Keywords
| Tin Compound, Synthesis, IR Spectra, Crystal Structure | | |
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| default:Reihe_B/52/ZNB-1997-52b-0145_n.pdf | | | Identifier
| ZNB-1997-52b-0145_n | | | Volume
| 52 | |
184 | Author
| Matthias Krieger3, Klaus Harms3, Jörg Magullb, Kurt Dehnicke3 | Requires cookie* | | Title
| Phosphanimin-und Phosphaniminato-Komplexe des  | | | Abstract
| Zinks. Kristallstrukturen von [ZnCl2(Me3SiNP(CH2)4CMe3)]2, [ZnI2(Me3SiNPEt3)]2, [ZnI2{Me2Si(NPEt3)2 }] und [ZnBr(NPMe3)]4 CH2Cl2 Phosphaneimine and Phosphoraneiminato Complexes of Zinc. Crystal Structures of [ZnCl2(M e3SiNP(CH2)4CM e3)]2, [ZnI2(Me3SiNPEt3)]?, [Znl2{Me2Si(NPEt3)2}], and [ZnBr(NPMe3)]4 CH2Cl2 The donor-acceptor complexes [ZnCl2(Me3SiNP(CH2)4CMe3)]2 (l)and [ZnI2(Me3SiNPEt3)]2 (2) have been prepared from the zinc dihalides and the corresponding silylated phosphaneimi-nes in CH2C12. Thermolysis of 2 leads to the formation of [ZnI2(Me2Si(NPEt3)2)] (3). Znl2 and ZnBr2 react with the silylated phosphaneimines Me3SiNPR3 (R = Me, Et) in the presence | | |
Reference
| Z. Naturforsch. 52b, 243—250 (1997); eingegangen am 1. August 1996 | | |
Published
| 1997 | | |
Keywords
| Zinc Compounds, Phosphoraneiminato Complexes, Synthesis, Crystal Structure | | |
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| default:Reihe_B/52/ZNB-1997-52b-0243.pdf | | | Identifier
| ZNB-1997-52b-0243 | | | Volume
| 52 | |
185 | Author
| W. Schnick | Requires cookie* | | Title
| Synthesen, Kristallstrukturen und Eigenschaften von Trisilber-und Trikalium-tri-/x-imido-cyclotriphosphat, Ag3(P 0 2NH)3 und K3(P 0 2NH)3 Syntheses, Crystal Structures, and Properties of Trisilver and Tripotassium Tri-^-im ido Cyclotriphosphate, Ag3(P 0 2N H)3 and K3(P 0 2N H)3 N. Stock  | | | Abstract
| Coarse crystalline Ag3(P 0 2NH)3 (1) and K3(P 0 2NH)3 (2) are obtained by addition of an aqueous solution of A gN 03 to an acidified solution of Na3(P 0 2NH)3 • 4H20 and by diffusion controlled addition of ethanol to a solution of K3(P 0 2NH)3 in water, respectively. The crystal structures of 1 and 2 have been determined by single crystal X-ray methods (Ag3(P 0 2NH)3: P2,/c; a = 1166.6(1), b = 786.4(1), c = 997.8(1) pm, ß = 106.91(1)°; Z = 4. K3(P 0 2NH)3: R3; a = 1271.4(2), c = 1017.9(2) pm, Z = 6). In Ag3(P 0 2NH)3 the cyclic anion is markedly distorted because of interactions between Ag+ and one nitrogen atom of the anion. In K3(P 0 2NH)3 the trimetaphosphimate ring shows a chair conformation and two cyclic anions are connected to each other by hydrogen bonds. DTA/TG investigations show thermal decomposition above 275 and 250 °C for 1 and 2, respectively. | | |
Reference
| Z. Naturforsch. 52b, 251—255 (1997); eingegangen am 14. November 1996 | | |
Published
| 1997 | | |
Keywords
| Trimetaphosphimate, Synthesis, Crystal Structure, Thermal Property | | |
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| default:Reihe_B/52/ZNB-1997-52b-0251.pdf | | | Identifier
| ZNB-1997-52b-0251 | | | Volume
| 52 | |
186 | Author
| SvitlanaR. Petrusenkoa, Joachim Sielerb, VladimirN. Kokozay3 ' | Requires cookie* | | Title
| Direct Synthesis of Zinc and Nickel(II) Complexes with l,4-Diazabicyclo[2.2.2]octane  | | | Abstract
| The peculiarities of the formation of zinc and nickel(II) complexes by interaction of metal powder or metal oxide with ammonium salts (halides, nitrate, thiocyanate) were investigated in non-aqueous solutions (methanol, acetonitrile, N,N-dimethylformamide=DMF, dimethylsulf-oxide=DMSO) in presence of l,4-diazabicyclo[2.2.2]octane. The stoichiometry of the com plexes was found to depend on the initial reagent ratio Ni/ZnOiNfLX and Ni/ZnO:Ten. The compounds of compositions Z n(H Ten)(H 20)(N 03)3 and Ni(HTen)(Ten)Cb were character ized by X-ray crystallography. Both complexes contain five-coordinate metal atoms. The zinc compound possesses monomeric molecular structure whilst the nickel complex is polymeric. | | |
Reference
| Z. Naturforsch. 52b, 331—336 (1997); received July 30 1996 | | |
Published
| 1997 | | |
Keywords
| Synthesis, Zinc, Nickel(II), Triethylenediamine, X-Ray | | |
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| default:Reihe_B/52/ZNB-1997-52b-0331.pdf | | | Identifier
| ZNB-1997-52b-0331 | | | Volume
| 52 | |
187 | Author
| Stefan Horstmann, Wolfgang Schnick | Requires cookie* | | Title
| Synthese, Kristallstruktur und Eigenschaften von 1,1,3,3,3-Pentaamino- l-th io -l A \3 A 5-diphosphaz-2-en (NH2)2P(S)N=P(NH2)3 Synthesis, Crystal Structure, and Properties of 1,1,3,3,3-Pentaam ino-l-thio-l A5,3A5-diphosphaz-2-ene (N H 2)2P(S)N =P(NH 2)3  | | | Abstract
| (NH2)2P(S)N=P(NH2)3 has been prepared by a two step synthesis. Suitable single crystals were obtained from an acetonitrile solution in a temperature gradient between 60 °C and room temperature. The crystal structure of (NH->)tP(S)N=P(NH->)3 has been determined by single cry stal X-ray methods (P2,/c, a = 9 9 8 .2 7 (9)> '= 762.78(8), c = 1007.70(15) pm, ß = 107.340(7)°, Z = 4). In the crystal structure each hydrogen atom is subject to a hydrogen bond. Four N-H -N hydrogen bonding interactions per molecule build up a framework connecting two molecules in eight-membered rings. Each sulfur atom shows six distances N -H -S in the range of weak hydrogen bonding interactions. | | |
Reference
| Z. Naturforsch. 52b, 490—95 (1997); eingegangen am 18. Dezember 1996 | | |
Published
| 1997 | | |
Keywords
| Aminophosphazenes, Synthesis, Crystal Structure, Hydrogen Bonding | | |
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| default:Reihe_B/52/ZNB-1997-52b-0490.pdf | | | Identifier
| ZNB-1997-52b-0490 | | | Volume
| 52 | |
188 | Author
| A. M. Orgenstern, H. Oppermann | Requires cookie* | | Title
| Untersuchungen zur thermischen Zersetzung von Ammoniumlanthanhalogeniden Investigation on the Thermal D ecom p osition o f A m m onium H alides  | | | Abstract
| The decomposition equilibria of Ammonium Lanthanum Halides (NH4)2LaX5 were determined by total pressure measurements in a membrane zero manometer. The phases (NH4j2LaX5 decompose in one step to give solid LaX3 and gaseous NH3 and HX. From the decomposition functions the enthalpies of formation and the standard entropies of the phases are derived. ^H £(N H 4)2LaCl5,f,298) = -4 1 1 ,7 ± 2,2 kcal/mol; S°((NH4)2LaCl5,f,298) = 86,7 ± 2,3cal/Kmol; ^H^(NH4)2LaBr5,f,298) = -351,6 ± 3,8 kcal/mol; S°((NH4)2LaBr5,f,298) = 101,1 ± 1,8 cal/Kmol; _}H£(NH4)2LaI"f,298) = -2 6 8 ,9 ± 3,9 kcal/mol; S°((NH4)2LaI5,f,298) = 115,5 ± 4,3 cal/Kmol. | | |
Reference
| Z. Naturforsch. 52b, 696—706 (1997); eingegangen am 17. Februar 1997 | | |
Published
| 1997 | | |
Keywords
| Synthesis, Ammonium Lanthanum Halides, Thermal Decomposition, Thermochemical Data | | |
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| default:Reihe_B/52/ZNB-1997-52b-0696.pdf | | | Identifier
| ZNB-1997-52b-0696 | | | Volume
| 52 | |
190 | Author
| P. Schm, O. Bosholm, H. O. Pperm, Ann | Requires cookie* | | Title
| Untersuchungen zum ternären System Bi/Te/O, II. Thermisches Verhalten und Koexistenzbeziehungen von Bi20 2Te  | | | Abstract
| Investigations o f the Ternary System Bi/Te/O, II. The Therm al Behaviour and the R elations o f Phase C oexistences o f B i20 2Te The phase Bi20 2Te exists in the pseudobinary system Bi203/Bi2Te3. The thermal behaviour of Bi2Ö2Te was determined by DTA and X-ray analysis: The phase exists up to 620 °C and decomposes into the solid phases Bi12TeO20, Bi10Te2O 19 [1] and liquid BiTe. The relations of the phase coexistences in the pseudobinary system and in the ternary area Bi20 3/Te02/Bi2Te3/Te were investigated by solid state reactions, chemical transport reactions, and by total pressure measurements. | | |
Reference
| Z. Naturforsch. 52b, 1461—1466 (1997); eingegangen am 2. Oktober 1997 | | |
Published
| 1997 | | |
Keywords
| Synthesis, Thermal Properties, Phase Diagram, Chemical Transport Reactions | | |
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| default:Reihe_B/52/ZNB-1997-52b-1461.pdf | | | Identifier
| ZNB-1997-52b-1461 | | | Volume
| 52 | |
191 | Author
| Andre Wiesch3, Hauke Timmb, Karsten Bluhm3 | Requires cookie* | | Title
| Uber CuDy2[B80 16] und CuHo2[B80 16]: Zwei neue "Metaborate" mit einem ^ [B80 16]g_-Anion On CuDy2[B80 16] and CuHo2[B80 16]: Two New "Metaborates" with a ^ [B80 16]8-Anion  | | | Abstract
| Nearly colourless single crystals of the compounds CuDy2 [B80 i 6] (I) and CuHo2[B80)6] (II) have been obtained by a B20 3 flux technique. They crystallize in the structure of CuTb2 [B80)6] (I) or in an orthorhombic variant (II). X-ray investigations on single crystals led to the space group C2h -P2!/c (Nr. 14) with lattice parameters a = 1025,5(10); b = 836,99(10); c = 621,2(8) pm, ß = 90.47(10)°; Z = 2 (I) and D^h -Pbam (Nr. 55) with a = 840,7(2), b = 616,6(2), c = 1022,0(2) pm, Z = 2 (II). The structures contain 1 [B80 16]8_ chains isolated from each other, which include tri-and tetracoordinated boron, T'fie chains consist of alternating twelve and eight-membered rings of boron and oxygen atoms connected by B 0 4 units. Dy,+ and H o 3+ are octacoordinated and Cu2+ is hexacoordinated in elongated octahedra by oxygen. The relation between these two structures is discussed. | | |
Reference
| (Z. Naturforsch. 53b, 1—4 [1998]; eingegangen am 23. Oktober 1997) | | |
Published
| 1998 | | |
Keywords
| Copper, Lanthanoids, Borate, Synthesis, Crystal Structure | | |
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| default:Reihe_B/53/ZNB-1998-53b-0001.pdf | | | Identifier
| ZNB-1998-53b-0001 | | | Volume
| 53 | |
192 | Author
| Lanthanoid Borates, A. Wiesch, K. Bluhm | Requires cookie* | | Title
| CuHo2[B20 5]2* Ein unerwarteter Strukturtyp in der Reihe der Kupferlanthanoidborate CuHo2[B20 5]2: An Unexpected Structure Type in the Series of Copper  | | | Abstract
| Single crystals of the new compound CuHo2 [B20 5 ]2 were obtained by using a B20 3 flux technique with CuO and Ho20 3 at 1050 °C. X-ray investigations on single crystals led to the space group P 2,/c (Nr. 14) with lattice parameters a = 454.3(2); b = 726.0(4); c = 936.0(5) pm; ß = 90.77(1)°; Z = 2. The compound is isotypic to CuTb2[B20 5 ] 2 as well as to the gadolinite structure (FeY2 [BeSi05]2). The structure exhibits layer-like 2 [B20 5]4~, a two-dimensional anion consisting of edge sharing B 0 4 -tetrahedra, which form four-and eight-membered rings. The layers are connected by elongated C u06-octahedra and slightly distorted tetragonal LnOs-antiprisms. | | |
Reference
| (Z. Naturforsch. 53b, 5—8 [1998]; eingegangen am 23. Oktober 1997) | | |
Published
| 1998 | | |
Keywords
| Copper, Holmium, Borate, Synthesis, Crystal Structure | | |
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| default:Reihe_B/53/ZNB-1998-53b-0005.pdf | | | Identifier
| ZNB-1998-53b-0005 | | | Volume
| 53 | |
193 | Author
| Helical Borate, AnionA. Wiesch, K. Bluhm | Requires cookie* | | Title
| Ag2Cs[B1 5 0 2 4]* Ein wasserfreies quaternäres SiIber(I)-Borat mit einem neuartigen Boratanion mit helixartigem Aufbau Ag2C s[B 150 24]: An Anhydrous Quaternary Silver(I)-Borate with a New  | | | Abstract
| Single crystals o f Ag2C s[B ,50 24] were prepared by using a B 20 3 flux technique with Ag2C 0 3 and Cs2C 0 3 in a closed silver tube at 650 °C. X-Ray investigations led to a new crystal structure in the space group P 2 ,2 ,2 (Nr. 18) with lattice parameters a = 1778.7 (4); b = 2219.2 (4); c = 512.2 (1) pm, Z = 4. The silver atoms are part of distorted A g 0 4 tetrahedra and planar A g 0 3 units while the caesium atoms are eightfold coordinated by oxygen. The compound contains an as yet unknown borate anion [B,50 24] with twelve B 0 3-and three B 0 4 units per formula. The B 0 3 units are connected to eight cords twisted to helices which are combined via B 0 4 tetrahedra to a three dimensional framework with large tunnels occupied by the cations. | | |
Reference
| Z. Naturforsch. 53b, 157—160 (1998); eingegangen am 23. Oktober 1997 | | |
Published
| 1998 | | |
Keywords
| Silver, Caesium, Borate, Synthesis, Crystal Structure | | |
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| default:Reihe_B/53/ZNB-1998-53b-0157.pdf | | | Identifier
| ZNB-1998-53b-0157 | | | Volume
| 53 | |
195 | Author
| Lackner | Requires cookie* | | Title
| Octacidomycine, IV : Neue Totalsynthese von rac-Octacidomycin und strukturverwandten Oligocarbonsäuren Octacidom ycins, I V : A New Total Synthesis of rac-O ctacidom ycin and Structurally R elated O ligocarboxylic A cids A ndreas K rause, H elm ut  | | | Abstract
| a new strategy, an improved total synthesis of the unique antibiotic octacidomy-cin (1) and of structurally related oligocarboxylic acids was developed (Scheme 1,2). Starting from 3 and the tetraethylester of l,17-dibromo-6,6,12,12-heptadecane-tetracarboxylic acid (6) as a key compound, systematical fragment condensations lead to the nonatriacontane-pentadecacarboxylic acid 11 and hence to the 1,3,9,15,21,27,33,39-nonatriacontane-octacarbo-xylic acid 1. The synthetic pathway can easily be modified and generally be applied for the synthesis of a broad variety of hitherto unknown oligocarboxylic acids or their esters, respec tively, and even of cyclic analogues (Scheme 2). | | |
Reference
| Z. Naturforsch. 53b, 1043—1050 (1998); eingegangen am 22. Juni 1998 | | |
Published
| 1998 | | |
Keywords
| Antibiotics, Octacidomycins, Oligocarboxylic Acids, Synthesis, NMR Data Following | | |
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| default:Reihe_B/53/ZNB-1998-53b-1043.pdf | | | Identifier
| ZNB-1998-53b-1043 | | | Volume
| 53 | |
196 | Author
| Axel Lifferth3, IsabelB. Ahnera, Ut Helm, Lackner, M. Artina Schäferb | Requires cookie* | | Title
| Synthese und Struktur von Prolinring-modifizierten Actinomycinen des X-Typs Synthesis and Structure of Proline Ring Modified Actinomycins of the X-Type  | | | Abstract
| The first total synthesis o f actinomycins containing L-4-hydroxyproline (1) and the separa tion and NM R spectroscopic assignment o f the regioisomers X (V* and iso-X0/i (lc, le) are described. The synthetic X 0/j proves, that the oxidized proline ring of the natural actinomycins | | |
Reference
| Z. Naturforsch. 54b, 681—6 (1999); eingegangen am 15. Januar 1999 | | |
Published
| 1999 | | |
Keywords
| Antibiotics, Actinomycins, Synthesis, Crystal Structure, NM R Data | | |
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| default:Reihe_B/54/ZNB-1999-54b-0681.pdf | | | Identifier
| ZNB-1999-54b-0681 | | | Volume
| 54 | |
197 | Author
| Michael Becker, Martin Jansen, Martin Jansen Heisenbergstraße, D-70596, Stuttgart Sonderdruckanforderungen, Prof Dr, Martin Jansen | Requires cookie* | | Title
| Darstellung und Charakterisierung von Rubidiumhydrogencyanamid Synthesis and Characterization of Rubidium Hydrogen Cyanamide  | | | Abstract
| The synthesis of RbHCN2 was carried out by reaction of cyanamide with rubidium amide in liquid ammonia. The crystal structure has been determinedo by x-ray powder methods (orthor-hombic, P2,2,2,, a = 7.299(1), b = 9.435(1), c = 9.420(1) Ä; Z = 8). The anion is slightly bent (174°) and exhibits two different bond lengths (C-N: 1.17, HN-C: 1.31 A). | | |
Reference
| Z. Naturforsch. 54b, 1375—1378 (1999); eingegangen am 26. Juli 1999 | | |
Published
| 1999 | | |
Keywords
| Rubidium Hydrogen Cyanamide, Synthesis, Crystal Structure, IR Data | | |
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| default:Reihe_B/54/ZNB-1999-54b-1375.pdf | | | Identifier
| ZNB-1999-54b-1375 | | | Volume
| 54 | |
198 | Author
| E. N. Kirillova, A. A. Trifonova, S. E. Nefedovb, I. L. Eremenkob, F. T. Edelmannc, M. N. Bochkarev3, J.G A Razuvaev | Requires cookie* | | Title
|  | | | Abstract
| The interaction of NdCh with lithium metal in THF in the presence of naphthalene produces a mixture of naphthalene complexes of di-and trivalent neodymium chloride of an aggregate com | | |
Reference
| Z. Naturforsch. 54b, 1379—1384 (1999); received March 3 1999 | | |
Published
| 1999 | | |
Keywords
| Neodymium, Divalent Oxidation State, Synthesis, Structure, Phenoxide | | |
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| default:Reihe_B/54/ZNB-1999-54b-1379.pdf | | | Identifier
| ZNB-1999-54b-1379 | | | Volume
| 54 | |
199 | Author
| C. Bender, D. W. Ulff-M, H. Older, F. Vogt, M. M. Ritschl, Eisel | Requires cookie* | | Title
| Synthese und Kristallstruktur des Bromdifluormethyl-triphenyl- phosphoniumbromids, [(C6H5)3 PCF2Br]+ Br" Synthesis and Crystal Structure o f B rom odifluorom ethyl-triphenylphosphonium Brom ide, [(C6H5)3PC F2Br]+ Br~  | | | Abstract
| Difluorobromomethyl-triphenylphosphonium bromide [(C6H5)3PCF2Br]+ Br-(1) has been prepared by the reaction of triphenylphosphine with dibromodifluoro-methane in acetonitrile or methylene chloride. The colorless crystals are monoclinic, space group P 2,/n, Z=4, a = 1067.1(2), b = 1488,5(2), c = 1178,2(2) pm, ß = 95,67(3)°. The lattice contains Br~ anions and [(C6H5)3PCF2Br]+ cations with a Br-Br distance of 322,33(11) pm.. For the title compound the results of AM 1, PM 3 ,and MNDO calculations are in good agreement with corresponding values determined by the X-ray analysis only in the case of PM 3. The yellow-red [(C6H5)3PCF2Br]+ Br3~ (2) has been obtained by treating 1 with equimolar quantities of elemental bromine in methylene chloride solution. E inleitung | | |
Reference
| Z. Naturforsch. 55b, 167—170 (2000); eingegangen am 28. Oktober 1999 | | |
Published
| 2000 | | |
Keywords
| Bromodifluoromethyl-triphenylphosphonium Bromide, Synthesis, Crystal Structure | | |
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| default:Reihe_B/55/ZNB-2000-55b-0167.pdf | | | Identifier
| ZNB-2000-55b-0167 | | | Volume
| 55 | |
200 | Author
| Ernst Bayer, Heribert Hellstern, Heiner Eckstein | Requires cookie* | | Title
| Synthese von immobilisierten Peptidfragmenten an Polystyrol-Polyoxyethylen zur Affinitätschromatographie Synthesis of Immobilized Peptide Fragments on Polystyrene-Polyoxyethylene for Affinity Chromatography  | | | Abstract
| Polystyrene-polyoxyethylene craft copolymers have been used for step-wise peptide synthesis. After completion of synthesis the protecting groups are cleaved under acidic conditions, where the polymer-peptide bond is stable. These gels in comparison to polystyrene peptide gels, show better properties for applications in affinity chromatography as well as synthesis on solid supports, because the advantageous properties of polystyrene beads are combined with the excellent spacer behavior of polyoxyethylene chains (mobility, solvation by water and organic solvents). Peptide gels with polylysine sequences have been synthesized as highly selective stationary phases for the separation of the homologous oligo desoxyribonucleotides (d7)n with n = 1—3. The principal possibilities of these gels for affinity chromatography | | |
Reference
| Z. Naturforsch. 42c, 455—460 (1987); received December 1 1986 | | |
Published
| 1987 | | |
Keywords
| birthday Affinity Chromatography, Immobilization, Liquid-Solid-Phase, Peptides, Synthesis | | |
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| default:Reihe_C/42/ZNC-1987-42c-0455.pdf | | | Identifier
| ZNC-1987-42c-0455 | | | Volume
| 42 | |
|