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1996 (295)
181Author    Horst Kunkely, Arnd VoglerRequires cookie*
 Title    Excited State Properties of Myochrysin and Auranofin  
 Abstract    8, 1996 Myochrysin, Auranotin. Gold(I) Complexes, Photochemistry, Luminescence Myochrysin (sodium aurothiomalate hydrate) and auranofin [2,3.4,6-tetra-O-acetyl-l-thio-ß-D-glucopyranosato-S)(triethylphospine)gold(I)] are luminescent in the solid state and in ethanol glasses at 77 K (myochrysin: Amax = 600 nm; auranofin: 618 nm). Aqueous myochrysin and auranofin in acetonitrile undergo a photodecomposition. It is assumed that the luminecence originates from a metal-centered ds excited state with partial ligand-to-metal charge transfer (LMCT) character while the photodecomposition is induced by LMCT excitation. 
  Reference    Z. Naturforsch. 51b, 1067—1071 (1996); received March 
  Published    1996 
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 Identifier    ZNB-1996-51b-1067 
 Volume    51 
182Author    Stefan Peter, Ellen Suchanek, Dirk Eßer, HeinzDieter LutzRequires cookie*
 Title    Die Zwillings-Kristallstruktur von Mg(Br03)2*6H20  
 Abstract    Magnesium Bromate Hexahydrate. Twinning of Bromate, Hydrate, Crystal Structure. IR Spectra The crystal structure of Mg(Br0 3)2-6H20 twinned crystals has been determined by X-ray single crystal diffraction (Pa3, a -1039.56(9) pm). The structure is isomorphic to that of M (Br03)2-6H20 (M = Co, Ni, Cu, Zn] and Ni(C10?)v6H 20 . The Mg(Br0 0 2 '6H20 structure is related to fluorite, with Mg(H20) 6_+ replacing Ca2+ and BrO^-replacing F~. The water molecules are involved in nearly linear hydrogen bonds to adjacent bromate ions (i/OD of matrix isolated HDO: 2458 and 2453 cm-1). The intramolecular O-H distances 96.84 and 96.90 pm have been derived from the wavenumbers of the respective OD stretches using a recently established vOD vs. r0H correlation curve. The infrared and Raman spectra show accidental degeneracy of the symmetric and the asymmetric BrO stretching modes, which is common for bromate ions with local C3v symmetry. 
  Reference    Z. Naturforsch. 51b, 1072—1078 (1996); eingegangen am 7. Februar 1996 
  Published    1996 
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 Identifier    ZNB-1996-51b-1072 
 Volume    51 
183Author    N. Stock, W. SchnickRequires cookie*
 Title    Synthese, Kristallstruktur und Eigenschaften von l,l>3 ?3 ?3 -Pentaam*n° -l  
 Abstract    oxo-lA 5 ,3A 5 -diphosphaz-2-en, (NH2)2 (0)P-N=P(NH2)3 Synthesis, Crystal Structure, and Properties of 1,1,3,3,3-Pentaam ino-l-oxo-l A 5 , 3 A 5 -diphosphaz-2-ene, (NH2)2(0)P-N =P(N H i)3 Coarse crystalline (NH2)2(0)P-N=P(NH2)3 is obtained from a NH;* saturated CH2C12 suspen­ sion of (NH2)2(0)P-N=P(NH2)3 NH4C1 at room temperature. (NH2)2(0)P-N=P(NH2)3 NH4C1 is synthesized" by slow addition of C12(0)P-N=PC13 to a solution of NH3 in CH2C12 at -78 °C. Excess NH4C1 is removed by treatment with HNEt2 followed by extraction with CH2C12. The crystal structure of (NH2)2(0)P-N=P(NH2)3 has been determined by single crystal X-ray methods (P2(/c; a = 1462.8(3), b = 944.8(2), c = 1026.9(2) pm, /3 = 110.69(3)°; Z = 8). In the unit cell there are two crystallographically unique molecules. They form a three dimensional network by intermolecular hydrogen bonding interactions (N-H- • N > 313 pm. N-H • 0 > 293 pm). The investigation of the thermal properties shows decomposition with evolution of NH3 above 80 °C. 
  Reference    Z. Naturforsch. 51b, 1079—1083 (1996); eingegangen am 7. Dezember 1995 
  Published    1996 
  Keywords    Aminophosphazene, Synthesis, Crystal Structure Precursor 
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 Identifier    ZNB-1996-51b-1079 
 Volume    51 
184Author    RolfW. Saalfrank3 ', BerndH. Örner1, Stephan Recka, Jochen Nachtraba, Eva-Maria Petersb, Karl Petersb, Hans Georg Von SchneringbRequires cookie*
 Title    Synthese und Umsetzungen von 4-Acyl/Carbamoyl-N-aryl-3-chloro- pyrrol-2,5-dionen: Kristallstruktur eines auf Wasserstoffbrückenbindungen basierenden supramolekularen Bandes [1] Synthesis and Reactions of 4-Acyl/Carbamoyl-N-aryl-3-chloro-pyrrol-2,5-diones: Crystal Structure of a Supramolecular Ribbon Based on Hydrogen Bonds [ 1]  
  Reference    Z. Naturforsch. 51b, 1084—1098 (1996); eingegangen am 14. August 1995 
  Published    1996 
  Keywords    2, 3-Dioxo-2, 3-dihydrofurans, Pyrrol-2, 5-diones, Intermolecular H-Bridges, X-Ray 
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 Identifier    ZNB-1996-51b-1084 
 Volume    51 
185Author    Z. NaturforschRequires cookie*
 Title    Zwei Metasilicate mit Vierer-Einfach-Ketten: Hochdrucksynthese und Strukturverfeinerung von Sr2(VO)2 Si4O i2 (Haradait) und Sr2(Ti0)2Si40 12  
 Abstract    Two M etasilicates w ith Vierer Single Chains: H igh-Pressure Synthesis and Structure R efinem ent o f Sr-,(V 0)2Si40 12 (H aradaite) and Sr2(TiO)2Si4O i2 Thom as Berger, K laus-Jürgen Range* Single crystals o f Sr2(V 0)2Si40 |2 could be obtained by high-pressure high-temperature reaction of a SrSiCVSiÖ 2/V 205 mixture in a modified Belt-type apparatus. The green crystals 
  Reference    Z. Naturforsch. 51b, 1099—1103 (1996); eingegangen am 1. März 1996 
  Published    1996 
  Keywords    Metasilicates, Vierer Single Chains, High-Pressure Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1099 
 Volume    51 
186Author    K. Rämer, Hans Pritzkow, W. Alter, SiebertRequires cookie*
 Title    Intramolekular verbrückte Organo-bis[dialkylaminochIorborane]  
 Abstract    Intram olecularly B ridged O rgano-bis[dialkylam inochloroboranes] W olfgang W einm ann, A chim Hergel, Thom as Deforth, A lbrecht 0-Bis(dimethylaminochlorboryl)benzene, 1,3,5-Tris(dialkylam ino)-1,5-dichlor-1,3,5-triborapentanes, 1-a-Bis(chlordimethylaminoboryl)toluene, 1,8-Bis(dialkylaminochlorboryl)naphthalenes 
  Reference    Z. Naturforsch. 51b, 1104—1110 (1996); eingegangen am 22. Januar 1996 
  Published    1996 
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 Identifier    ZNB-1996-51b-1104 
 Volume    51 
187Author    HerrnK. ProfRequires cookie*
 Title    Synthese, Schwingungs-und Massenspektren  
 Abstract    von Et2S n (0 2PR2)2 (R = Me, Ph); Kristallstruktur von Et2Sn(02PPh2)2 Synthesis, V ibrational Spectra and M ass Spectra of Et2S n (0 2PR 2)2 (R = Me, Ph); Crystal Structure o f E t-,S n(02PPh2)-, A bdel-Fattah S hihadaa , Frank W ellerb * Et2S n (0 2PPh2)2 has been synthesized by the reaction of (Et2ClSn)20 with Ph2POCl in toluene and by the treatment of (Et2ClSn)20 or Et2SnCl2 with H 0 2PPh2 in methanol. The reaction of Et2SnO with H 0 2PM e2 in toluene was used to prepare Et2S n (0 2PM e2)2. An X-ray diffraction study of Et2S n (0 2PPh2)2 (space group P i, Z = 1, a = 559,9(1), b = 983,7(1), c = 1262,4(l)pm , a = 81,85(1)°,/3 = 79,79(1)°,7 = 75,00(1)°; structure refinement with 2662 independent reflections, R = 0.055) shows that the structure is polymeric and the 0 2PPh2 ligands function as double bridges between the tin atoms leading to the formation of centrosymmetric Sn20 4P2 eight-membered rings. The ethyl groups are in /ra«s-position in the resulting octahedral environment around tin. The I. R. and Raman spectra of Et2S n (0 2PR2)2 (R = Ph, Me) have been discussed and assigned. The mass spectra of Et2S n (0 2PR2)2 show S n (0 2PR2)+ as the base peak. 
  Reference    Z. Naturforsch. 51b, 1111—1 (1996); eingegangen am 9. Januar 
  Published    1996 
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 Identifier    ZNB-1996-51b-1111 
 Volume    51 
188Author    L. Inda, Jakobsm Eier, Ingo Krossing, Heinrich Nöth, M. Artin, J. H. SchmRequires cookie*
 Title    Uber einige Aluminiumbromid-Ether-Addukte: Strukturen in Lösung und im festen Zustand A lum inium B rom ide Ether Adducts: Structures in Solution and in the Solid State  
 Abstract    Aluminiumtribromide-monoglyme, Aluminiumtribromide-diglyme, A lum inium tribrom ide-1,4-dioxane, u>Bromo-tetra(ethylenoxo)-aluminiumdibromide Dimer, (15-Crown-5)aluminium dibromide tetrabromoaluminate Monoglyme forms a molecular 1:1 adduct with AlBr, which dissociates into the ions AlBr2(DM E)2+ and AlBr4~ in DME, CH 2Br2 and CDCl, as solvents. A hexacoordinated Al center is present in the solid adduct AlBrvdiglyme. The oxygen and bromine atoms are arranged in a meriodional configuration as shown by X-ray crystallography. However, in so­ lution dissociation occurs into AlBr2(diglym)2+ and AlBr4~. Not unexpectedly, AlBr, forms the adduct AlBr3-2THF with tetrahydrofuran. The dioxane adduct A lBrydiox is polymeric in the solid state and has a chain structure with pentacoordinated trigonal-bipyramidal Al centers. The Br atoms are arranged in a slightly distorted trigonal plane. In solution, the presence of tetracoordinated Al is indicated by 2 AI NMR spectroscopy. AlBr, cleaves one of the C-O bonds of 12-crown-4 leading to the dimer of u>bromo-tetra(ethyleneoxy)aluminium dibromide. This dimer contains pentacoordinated Al centers as proven by X-ray structure analysis. In contrast, the adduct of A lBr, with 15-crown-5 is most likely an ionic compound, and is best described as [AlBr2(15-crown-5)]AlBr4 based on 27Al NMR and IR data. 
  Reference    Z. Naturforsch. 51b, 1117—1126 (1996); eingegangen am 29. Januar 1996 
  Published    1996 
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 Identifier    ZNB-1996-51b-1117 
 Volume    51 
189Author    J. BeckRequires cookie*
 Title    [TeCl3]+)3[MoCI6]2-(C  
 Abstract    The Reaction o f M oC 14 w ith TeCl4: Synthesis and Crystal Structure of Tris(trichlorotelluronium) H exachlorom olybdate(IV) Chloride, ([TeCl3]+)3[M oCl6]2-[ C l -] Red crystals of (T e C l^ M o C l^ C l) are obtained by reacting MoCl4 with TeCl4 in a 1:3 molar ratio in a sealed evacuated ampoule at 170°. The crystal structure determination (orthorhombic, space group Cmc2), a = 1541.6(2), b = 1268.1(1), c = 1180.6(1) pm) shows the presence of trigonal-pyramidal [TeCl3]+ ions, octahedral [MoCI(l]2-ions, and isolated C l-ions. The ions are linked by long Te-Cl bridges resulting in distorted TeCl(l octahedra. The octahedra are connected by joint edges and corners to zig-zag chains running along the polar c axis. 
  Reference    Z. Naturforsch. 51b, 1127—1131 (1996); eingegangen am 28. Februar 1996 
  Published    1996 
  Keywords    Trichlorotelluronium, Hexachloromolybdate(IV), Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1127 
 Volume    51 
190Author    YalcinE. Lerm Ana, T., M. Ehm, K. Abaku, Ingrid Svoboda5, H. Artm, F. Uessb, KlausG. Riesarc, W. Olfgang, H. AasecRequires cookie*
 Title    Structure and Magnetic Properties of a Triply Oxygen. Bridged Dinuclear Ni(II) Complex  
 Abstract    X-Ray, Oxygen Bridged Dinuclear Nickel Complex, Magnetic Properties, Superexchange Interactions [Methylamino-(N,N'-l,3-propyl-disalicylaldim inato)-Ni(II)-bis-(N-methylsalicylaldimina-to)-Ni(II)] was synthesized from the condensation of N,N'-l,3-propyl-disalicylaldim ine, salicy-laldehyde, methylaminohydrochloride, NaOH and N^CH .^CO O h-ITO , and its crystal structure 
  Reference    Z. Naturforsch. 51b, 1132—1136 (1996); received October 11 1995 
  Published    1996 
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 Identifier    ZNB-1996-51b-1132 
 Volume    51 
191Author    M. Ichael Feist, Sergej Trojanov, ErhardK. Em NitzRequires cookie*
 Title    2.4-Diaminovinamidinium-bis-tetrachloroferrat(III), (C9H16N4) [FeCl4]2  
 Abstract    The Crystal Structure o f 2.4-D iam inovinam idinium B is-tetrachloroferrate(III), (C9H 16N4)[FeCl4], 2.4-Diaminovinamidinium Bis-tetrachloroferrate(III), Synthesis, Crystal Structure (davaH2)[FeCl4]2 crystallizes at room temperature from aqueous solutions of 2,4-diamino-vinamidinium hydrochloride, (davaH)Cl, and FeCl3 in 3Mo HC1 in the orthorhombic space group Pca2) with «= 14.108(3), b -16.502(3), c -18.919(4) A, Z=8. The structure consists of diprotonated tricyclic (davaH2)2+ cations and slightly distorted tetrahedral [FeCl4]_ anions. The cations are bent around the central heptacycle forming boat-like units. One of the two independent cations is disordered between two positions. Some interatomic distances N- • -Cl are interpreted in terms of N-H- • -Cl hydrogen bonds. 
  Reference    Z. Naturforsch. 51b, 1137—1 (1996); eingegangen am 15. Februar 1996 
  Published    1996 
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 Identifier    ZNB-1996-51b-1137 
 Volume    51 
192Author    R. Buheitel, W. M. Ilius, W. SchnickRequires cookie*
 Title    Synthese und Kristallstruktur von Cl3 Ti[N(SiMe2 Cl)(SiMe2NH2)]  
 Abstract    Cl3Ti[N(SiMe2Cl)(SiM e2NH2)] is yielded by reaction of TiCl4 with two molecules ClMe2SiNHSiMe3. A single crystal structure determination (P 2 , //*, a = 747.12(2), b = 1294.1(3), c = 1496.7(3) pm, ß = 90.30(3)°, Z = 4) shows a planar four-membered ring Ti-N-Si-N as the central feature of the monomers formed by a weak coordinative bond of the NH2 group to the Ti atoms. The monomers are connected to eive dimers via two Cl bridses linked to the Ti atoms. 
  Reference    Z. Naturforsch. 51b, 1141—1144 (1996); eingegangen am 19. Februar 1996 
  Published    1996 
  Keywords    Silazanes, Nitrido Bridges, Precursor, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1141.pdf 
 Identifier    ZNB-1996-51b-1141 
 Volume    51 
193Author    KlausH E Berta, Raym Undo, Cea-O Livares3, VeronicaG. Arcia-M, G. Ontalvoa, E. Eorgina, M. Spinosa-Pereza, R. Irna, JosefN. Estradab, J. D. Ovosadc, W. Erek, Oollinsd, F. MexicoRequires cookie*
 Title    Ungewöhnliche Koordination am Kalium des 18-Krone-6 Komplexes von Tetraphenyldiselenoimidodiphosphinat und der analogen Schwefelverbindung  
 Abstract    A [K(18-crown-6)] salt of the (Ph2PSe)2NH ligand was obtained by reaction of [K(PhbPSe)-.N] with 18-crown-6 [monoclinic, space group C2/c with the cell parameters a = 20.310(2), b = 8.894(2), c = 22.978(3) Ä, ß = 114.66(2)°, and Z = 4], The potassium ion has the rare coordination number 10. It is coordinated to the six oxygen atoms of the crown ether and to four carbon atoms, two from each of the two anionic ligands neighboring the cationic moiety. 
  Reference    Z. Naturforsch. 51b, 1145—1149 (1996) 
  Published    1996 
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 Identifier    ZNB-1996-51b-1145 
 Volume    51 
194Author    Jochen Münchenberg, Holger Thönnessen, PeterG. Jones, Reinhard SchmutzlerRequires cookie*
 Title    Synthese von Organylphosphonigsäure-N-(N\N  
 Abstract    ',N",N"-tetramethyl)guanidinid-fluoriden und ihre Reaktion mit Chalkogenen und Triphenylmethylazid; Darstellung und Charakterisierung von Organylchalkogeno-und Phenyltri-phenylmethylimino-phosphonsäure-N-(N',N',N",N"-tetramethyl)guanidinid-fluoriden Synthesis of Organophosphonous-N-(N',N',N",N"-tetramethyl)guanidinide Fluorides and their Reaction with Chalcogens and Triphenylmethyl Azide; Synthesis and Characterization of Organo-chalcogeno-and Phenyltriphenylmethylirnino-phosphonic-N-(N',N\N",N"-tetramethyl)-guani-dinide Fluorides The organophosphonous-N-(N',N',N",N"-tetramethyl)guanidinide fluorides RP(F)N=C(NMe2)2 2a (R = t-Bu) and 2b (R = Ph) were synthesized. They are readily oxidized by the urea-H20 2 1:1 adduct and by elemental sulfur, selenium and tellurium to give the compounds 4a/b, 5a/b, 6a/b and 7a/b respectively. Compound 2b undergoes a Staudinger reaction with triphenylmethyl azide to yield the phosphine imide 3. The compounds were characterized by H-, 3C-, 1 F and31P NMR spectroscopy, and 6a/b and 7a/b by 7 Se and l2;,Te NMR spectroscopy. The structures of the sulfur compound 5b and the selenium compound 6a were confirmed by X-ray crystal structure analysis. Both molecules exhibit short P-N-bonds [158.9(2) pm and 159.8(3) pm] consistent with partial double bond character even though the P(:S) and the P(:Se) bonds are not longer than a normal double bond. 
  Reference    Z. Naturforsch. 51b, 1150—1160 (1996); eingegangen am 15. Dezember 1995 
  Published    1996 
  Keywords    Phosphonic Fluorides, Thiophosphonic Fluorides, Selenophosphonic Fluorides, Tellurophos-phonic Fluorides, Heteronuclear NMR 
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 Identifier    ZNB-1996-51b-1150 
 Volume    51 
195Author    Mikko Koskinena, Ilpo Mutikainena, Hannu Elob-Requires cookie*
 Title    Crystal and Molecular Structures of Two Isomers of Phenylglyoxal Bis(amidinohydrazone) ['Phenylglyoxal Bis(guanylhydrazone)'] Sulphate  
  Reference    Z. Naturforsch. 51b, 1161—1172 (1996) 
  Published    1996 
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 Identifier    ZNB-1996-51b-1161 
 Volume    51 
196Author    KlausH. Artkea, N. Otker Biena, Frank WellerbRequires cookie*
 Title    Dithio-und Thionester, 63 [1] Reduktive Dimerisierung von Aryldithiocarbonsäureestern zu Bis(alkylthio)stilbenen Dithio-and Thionoesters, 63 [1] Bis(alkylthio)stilbenes by Reductive Dimerisation of Aryldithiocarboxylic Acid Esters  
 Abstract    Dithioesters. Thionoesters, Bis(alkylthio)stilbenes Reaction of o-and />alkyl substituted dithiobenzoic esters 5 with LDA and methyl iodide lead to the formation of the 1,2-bis(methylthio)stilbenes 9/10 and 16 by reductive dimerisa­ tion. The /7-methyl dithiobenzoic ester 15b, however, suffers a Claisen condensation with lithium hexamethyldisalazane to yield the stilbene derivative 17. Even the o-methyldithio-benzoic acid 19 is reductively dimerized by LDA giving after methylation a mixture of the stilbenes 9a/10a and 20. 
  Reference    Z. Naturforsch. 51b, 1173—1182 (1996); eingegangen am 12. Januar 1996 
  Published    1996 
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 Identifier    ZNB-1996-51b-1173 
 Volume    51 
197Author    Requires cookie*
 Title    Synthese, Koordinationschemie und Ligandeneigenschaften sekundärer Phosphane R(Ar*)  
 Abstract    PH mit sperrigen aromatischen Resten -Molekülstruktur von Ph(2,4,6-/Pr3C6H2)PH, (2,4,6-/Pr3C6H2)2PH und C I A u [ P h P (2 , 4 , 6 -r B u 3 C 6 H 2) H l 
  Reference    Z. Naturforsch. 51b, 1183 (1996) 
  Published    1996 
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 Identifier    ZNB-1996-51b-1183 
 Volume    51 
198Author    Requires cookie*
 Title     
 Abstract    y n t h e s e s a n d R e a c t io n s o f H e t e r o m e t a llic C o m p le x e s o f 
  Reference    Z. Naturforsch. 51b, 1197 (1996) 
  Published    1996 
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 Identifier    ZNB-1996-51b-1197 
 Volume    51 
199Author    S. Frenzen, Hk, Müller-BuschbaumRequires cookie*
 Title    Über Two Noble Metal Oxometallates Showing Sr4P t 0 6 Structure  
 Abstract    N aB a3R u 0 6 und N aB a3I r 0 6. Zwei Edelm etall-O xom etallate mit Sr4P t 0 6-Struktur On N aB a3R u 0 6 and N aB a3I r 0 6. Single crystals of NaBa?RuO(1 (I) and NaBa3IrOf1 (II) have been prepared by crystalli­ zation from melts in closed silver tubes. The cry­ stal structures were investigated by X-ray techni­ ques. Both compounds crystallize with trigonal (rhombohedral) symmetry, space group D f' ,-R3c, I: a = 10.107(2), c = 11.872(2) A. II: a = 10.128(2), c = 11.905(2) A. Z = 6. I and II are isostructural to the Sr4P t06 type. 
  Reference    Z. Naturforsch. 51b, 1204—1206 (1996); eingegangen am 26. Februar 1996 
  Published    1996 
  Keywords    Sodium Barium Ruthenium Iridium, Oxide, Crystal Structure 
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 Identifier    ZNB-1996-51b-1204_n 
 Volume    51 
200Author    Alexander Sladek, H. Ubert SchmidbaurRequires cookie*
 Title    T h e A u ra tio n o f D im e th y lsu lfid e  
 Abstract    Gold(I) Complex, Thioether Complex, Mixed Ligand Complex Dimethylsulfide reacts with (triphenylphos-phine)gold(I) trifluoromethanesulfonate to give quantitative yields of the mixed ligand complex [(Ph3P)Au(SMe2)]+0 3 SCF3~ (1). The structure of compound 1 has been determined by an X-ray crystal structure analysis. The lattice contains in­ dependent anions and (monomeric) cations, which have a linear P-Au-S axis. Attempts to pro­ duce a binuclear. dicationic complex through ad­ dition of a second equivalent of [(Ph,P)Au]+ failed and lead to decomposition products includ­ ing [(Ph3P)2Au]+0 3SCF3\ 
  Reference    Z. Naturforsch. 51b, 1207—1209 (1996); received April 22 1996 
  Published    1996 
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 Identifier    ZNB-1996-51b-1207_n 
 Volume    51 
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