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1Author    Mit Unterschiedlich, Koordinierten Zinkionen, Joachim Pickardt, Gill-Taik Gong, Sabine Wischnack, Christina SteinkopffRequires cookie*
 Title    Kristallstruktur zweier Zinkthiocyanat-Hexamethylentetramin-Addukte, Zn(SCN)2» (Q H ^N,), und {Zn(SCN)2 C6HnN4 2H 20}(SCN)2-(C6H 12N4)2, and {Zn(SCN)2-C6H 12N4-2H 20}", with Differently Coordinated Zinc Ions  
 Abstract    of the adducts Zn(SCN),-(C6H12N4)2 (1), and {Zn(SCN)2-C6H 12N4-2H20}" (2) were obtained by crystallization from aqueous solutions containing hexamethylenetetrami­ ne, potassium thiocyanate and zinc nitrate or zinc sulfate, resp., under identical conditions, as two totally different products. 1 crystallizes orthorhombically, space group P nmm, Z -2, a -622.4(5), b -1152.3(7), c = 1394.0(9) pm; 2 is monoclinic, space group C2/c, a = 984.4(3), b = 1217.0(5), c = 1257.4(6) pm, andß = 111.69(5)°. The crystal structure of 1 contains discrete molecules of the complex, in which the zinc ion is tetrahedrally coordinated by two NCS li­ gands, and two hexamethylenetetramine molecules, which act as monodentate ligands. In 2 however, the zinc ions are octahedrally coordinated. A "supramolecular" structure is form­ ed: The hexamethylenetetramine molecules act as bridging bidentate ligands and connect [Zn(H20) 2(NCS)2] units forming zig-zag chains. Adjacent chains are interconnected via hydrogen bonds. The formation of the two compounds with different coordination may be due to the fact, that the educts Zn(N03)2-4H20 and ZnS04-7H20 contain Zn(H20) 4 and Zn(H20) 6 moieties, resp., and that these species are retained in solution. 
  Reference    Z. Naturforsch. 49b, 325—329 (1994); eingegangen am 24. August 1993 
  Published    1994 
  Keywords    Hexamethylenetetramine Complexes, Zinc Thiocyanate Adducts, Crystal Structure Crystals 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0325.pdf 
 Identifier    ZNB-1994-49b-0325 
 Volume    49 
2Author    Srb^sioogThomas Berger, Klaus-Jürgen RangeRequires cookie*
 Title    Hochdrucksynthese und Strukturverfeinerung von Strontium-Danburit, SrB2Si20 8 High-Pressure Synthesis and Structure Refinement of Strontium Danburite  
 Abstract    of strontium danburite, SrB2Si20 8, were found after high-pressure treatment of SrSi03/Si02/Al20 3 mixtures at 40 kbar and 1400°C, obviously formed by an unwanted side reaction with the boron oxide-containing boron nitride capsules used. The crystals are orthorhombic, space group Pnma, with a = 8.1891 (5), b = 7.9311 (6), c = 8.9284(5) A and Z = 4. The structure was refined to R = 0.031, Rw = 0.028 for 590 independent, absorption-corrected reflections. SrB2Si20 8 is isostructural with danburite (CaB2Si20 8). The structure comprises a tetrahedral framework of ordered B20 7 and Si2Ov groups which contains Sr in irregular coordination. Die Kristallstruktur des seit 1839 bekannten Dan-burits, CaB2Si20 8, wurde 1931 von Dunbar und Machatschki [1] bestimmt und später von Johann-son [2], Bakakin, Kravchenko und Belov [3] sowie von Phillips, Gibbs und Ribbe [4] verfeinert. Ob­ wohl Dunbar und Machatschki die Positionen der Boratome nur ungenau festlegen konnten, haben sie das Grundprinzip der Danburitstruktur korrekt be­ schrieben; es liegt ein dreidimensionales Netzwerk aus geordnet verteilten, eckenverknüpften B20 7-und Si20 7-Gruppen vor, das die Ca-Atome in irre­ gulärer Koordination durch Sauerstoff enthält. Eine 1'B-NMR-Studie von Brun und Ghose [5] belegt, daß die geordnete B-Si-Verteilung in Danburit bis zu dessen Zersetzungstemperatur erhalten bleibt. Während also CaB2Si2Ö 8 strukturell gut charak­ terisiert ist, lagen von der homologen Verbindung SrB2Si20 8 bisher nur Pulverdaten vor. SrB->Sio08 wurde erstmals von Verstegen et al. erwähnt, die die Lumineszenz der Eu-aktivierten Verbindung un­ tersuchten [6]. Auf sie geht auch die Bestimmung der Zellparameter zurück. Aufgrund der vermute­ ten Ähnlichkeit zum Danburit schlugen Verstegen et al. [6] für SrB2Si2Og den Namen Strontium-Dan-burit vor. Eine weitere Erwähnung der Verbindung SrB2Si20 8 erfolgt bei Baylor und Brown [7], die Phasengleichgewichte im ternären System SiCX-B20 3-Sr0 untersuchten. * Sonderdruckanforderungen an Prof. Dr. K.-J. Range. 
  Reference    Z. Naturforsch. 51b, 172—174 (1996); eingegangen am 20. Juli 1995 
  Published    1996 
  Keywords    Stontium Danburite, High-Pressure Synthesis, Crystal Structure Single crystals 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0172.pdf 
 Identifier    ZNB-1996-51b-0172 
 Volume    51 
3Author    Walter AbrielRequires cookie*
 Title    Die Kristallstruktur von [Na(H20)3]2TeBr6, ein Hydrat mit Ketten aus flächenkondensierten Na(H20)6-Oktaedern The Crystal Structure of [Na(H20)3]2TeBr6, a Hydrate with Chains of Face-Sharing Na(H20)6 Octahedra  
 Abstract    Using 293 K diffractometer intensity data the structure of [Na(H20)3]2TeBr6 has been determined by single crystal X-ray technique and refined to a final Rw of 0.048. The crystals are monoclinic (space group C2/m) with a — 13.039(4) A, b = 10.899(8) A, c = 6.838(3) A, ß = 115.89(2)° and Z = 2. The structure contains infinite chains parallel [001] built up by face-sharing Na(H20)6-octahedra. Isolated TeBrß 2-octahedra between these chains represent the anion part of the structure, which can be regarded as a packing of layers based on a 3 3 .4 2 .-net consisting of oxygen and bromine atoms. 
  Reference    Z. Naturforsch. 38b, 1543—1547 (1983); eingegangen am 20. Juli 1983 
  Published    1983 
  Keywords    Crystal Structure, Hydrates, Tellurates 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1543.pdf 
 Identifier    ZNB-1983-38b-1543 
 Volume    38 
4Author    Synthesis, Crystal Structure Of, HerbertW. Roesky, Hartmut Hofmann, Mathias Noltemeyer, GeorgeM. SheldrickRequires cookie*
 Title    Synthese und Kristallstruktur von l,l,l,3,3»3-Hexafluor-2-propylamino- l-thiooxamid +-Hexafluoro-2-propylamino- 1-thiooxamide"  
 Abstract    Dithiooxamide 1 reacts with hexafluoroacetone 2 at room temperature to yield 1,1,1,3,3,3-hexafluoro-2-propylamino-l-thiooxamide 3 and sulfur. The modes of formation of the bis(trifluoromethyl)-methyl group from hexafluoroacetone, the migra-tion of oxygen and the elimination of sulfur are not clear. Crystals of 3 are monoclinic, space group Cc, with a = 2865.3(13), b = 924.4(9), c = 702.9(6) pm, ß = 93.3(7)°. The structure was re-fined to R — 0.067 from 614 reflections. 
  Reference    (Z. Naturforsch. 40b, 124—126 [1985]; eingegangen am 13. August 1984) 
  Published    1985 
  Keywords    Dithiooxamide, Hexafluoroacetone, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0124_n.pdf 
 Identifier    ZNB-1985-40b-0124_n 
 Volume    40 
5Author    KurtO. KleppRequires cookie*
 Title    Darstellung und Kristallstruktur von Tl 2 TiS 4 : Ein Perthiotitanat(IV) mit i-[TiS 4 2 "]-Ketten Preparation and Crystal Structure of Tl 2 TiS 4 : A Perthiotitanate(IV) with ^-[TiS 4 2 ~]-Chains  
 Abstract    Tl 2 TiS 4 is orthorhombic, space group Pbca, with a = 22.176(7), b = 9.484(4), c = 6.3977(9) A, Z = 8. The crystal structure was solved by direct methods and refined to a conventional R of0.058 for 704 reflections with I^3a(I). The crystal structure is characterized by infinite perthioanions, i-[TiS 4/2 (S 2) 2 -], which are separated by Tl + -cations. The anion chains are built up by distorted octahedra which share two skew edges to form infinite cis-chains running along [001], The two unshared S-atoms of each octahedron are connected via a S —S-single bond of 2.10 A length. The crystal structure is described as a mixed packing of TI-and S-atoms, composed of puckered T1S 2 -layers, in which the Ti-atoms occupy the octahedral interstices. The relationship of the ^-[XiS^ -]-chains to the anionic groups of Cs 2 TiS 3 is discussed. 
  Reference    Z. Naturforsch. 40b, 229—234 (1985); eingegangen am 27. September 1984 
  Published    1985 
  Keywords    Thallium Perthiotitanate, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0229.pdf 
 Identifier    ZNB-1985-40b-0229 
 Volume    40 
6Author    HerbertW. Roesky, KaveripatnamS. Dhathathreyan, Mathias Noltemeyer, GeorgeM. SheldrickRequires cookie*
 Title    Reactions of the Hexafluorothioacetone Dimer with Cyanides of Phosphorus, Arsenic and Germanium  
 Abstract    Cyanides such as P(CN) 3 , As(CN) 3 , PhP(CN) 2 , Bu'As(CN) 2 and Ge(CN) 4 react with [(CF 3) 2 CS] 2 (1) by insertion of the carbon atom of the /so-nitrile isomer into the four-mem-bered [CS] 2 ring to give compounds PR 3 (2), AsR 3 (3), FP(S)R 2 (4), PhP(S)R^ (5), Bu'AsR^ (6) and GeR 4 (7) respectively, where R' is the novel heterocyclic ligand —N=C—S—C(CF 3) 2 —S —C(CF 3) 2 . The crystal structures of 3 and 7 are reported. 
  Reference    Z. Naturforsch. 40b, 240—246 (1985); received September 19/October 25 1984 
  Published    1985 
  Keywords    Crystal Structure, Hexafluorothioacetone, Nitriles, Heterocyclics 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0240.pdf 
 Identifier    ZNB-1985-40b-0240 
 Volume    40 
7Author    PeterG. Jones, HerbertW. Roesky, Hansjörg Grützmacher, GeorgeM. SheldrickRequires cookie*
 Title    Oxidative Knüpfung einer Phosphor-Phosphor-Bindung unter Einwirkung von Ag(I)-bzw. Cu(II)-Ionen: Synthese und Struktur von [(C 6 H5)PH 2 Ag{|i-(C 6 H 5 PH) 2 }]2 (AsF 6 ) 2 , einem sechsgliedrigen Silber-Phosphor-Ring The Oxidative Formation of a Phosphorus-Phosphorus Bond in the Presence of Ag(I) and Cu(II) Ions: Synthesis and Structure of [(C 6 H 5 )PH 2 Ag{^-(C 6 H 5 PH) 2 }] 2 (AsF 6 ) 2 , Containing a Six-Membered Silver-Phosphorus Ring  
 Abstract    The reaction between AgAsF 6 and phenylphosphine proceeds with formation of a phosphorus-phosphorus bond. The main product 1, [(C 6 H 5)PH 2 Ag{u-(C 6 H 5 PH) 2 }] 2 (AsF 6) 2 , was characterized by an X-ray structure determination [PI, a = 919.0(4), b = 1109.8(4), c = 1316.4(5) pm, a = 97.48(3), ß = 107.25(3), y = 102.71(3)°, Z = 1, R = 0.057 for 2806 observed reflections], 1 contains Ag 2 P 4 rings; the silver atoms are further coordinated by phenylphosphine ligands, thus acquiring trigonal coordination geometry. A similar reaction is observed with Cu(AsF 6) 2 , forming the analogous Cu(I) complex 2. 
  Reference    Z. Naturforsch. 40b, 590—593 (1985); eingegangen am 28. Januar 1985 
  Published    1985 
  Keywords    Crystal Structure, Silver, Phenylphosphine, Copper 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0590.pdf 
 Identifier    ZNB-1985-40b-0590 
 Volume    40 
8Author    Roland Zagler, Brigitte Eisenmann, Herbert SchäferRequires cookie*
 Title    Tritelluride mit komplexierten Kationen: Darstellung und Kristallstruktur von [Ba(en) 3 ]Te 3 und [Ba(en) 4;5 ]Te 3 Tritellurides of Complex Cations: Synthesis and Crystal Structure of [Ba(en) 3 ]Te 3 and [Ba(en) 4 5 ]Te 3  
 Abstract    The two title compounds have been prepared by reaction of appropriate mixtures of the elements in ethylenediamine. The structures have been determined on the basis of single crystal data. [Ba(en) 3 ]Te 3 crystallizes in the monoclinic system, space group P2 (/c with a = 918.0(4), b — 1203.7(6), c = 1639.9(6) pm, ß = 93.4(1)°. In the structure there are bent tritelluride anions Te 3 2 ~ (bond lengths 273.9—278.5 pm, bond angle 105.7°). The Ba 2+ cations are six coordinate by the bidentate ligand ethylenediamine. [Ba(en) 4 5 ]Te 3 crystallizes in the monoclinic system, space group Cc with a = 1752.8(6), b = 938.9(4), c = 3041.7(8) pm, ß = 91.3(1)°. In this structure the bond lengths in the Te 3 2 ~ anions are shorter (272.1—273.1 pm, bond angles 110.9—112.2°). The cations are coordinated by four bidentate ligands, and are connected into pairs by a further ethylenediamine molecule. The resulting dinuclear [Ba(en) 4 ]en[Ba(en) 4 ] 4+ units have the Ba 2+ cations in CN 9. 
  Reference    Z. Naturforsch. 42b, 151—156 (1987); eingegangen am 7. 0ktober/20. November 1986 
  Published    1987 
  Keywords    Tellurides, Polyanions, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0151.pdf 
 Identifier    ZNB-1987-42b-0151 
 Volume    42 
9Author    H. Erbert, W. Roesky, Nasreddine Benm, Oham Ed, Klaus Keller, Nayla Keweloh, M. Athias, N. Oltem Eyer, GeorgeM. SheldrickRequires cookie*
 Title    Synthesis and Crystal Structure of Seven-M em bered Sulfur Nitrogen Rings Containing Carbon  
 Abstract    The reaction of C1SCF2CF2SC1 and (Me3SiN)2SR2 proceeds with formation of the seven-mem-bered ring compounds 4a, R = CH3, and 4b, R = C2H 5. 4a was shown by an X-ray structure determination to contain a non-planar ring system. 
  Reference    Z. Naturforsch. 42b, 1249—1252 (1987); eingegangen am 5. Mai 1987 
  Published    1987 
  Keywords    Crystal Structure, Sulfur, Nitrogen 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1249.pdf 
 Identifier    ZNB-1987-42b-1249 
 Volume    42 
10Author    Siegfried Pohl, Wolfgang Saak, Detlev HaaseRequires cookie*
 Title    Darstellung und Kristallstrukturen von (Ph4P)4Sb8I28 und (Ph4P)Sb3l 10 (Ph = C6H5) Synthesis and Crystal Structures of (Ph4P)4Sb8I28 and (Ph4P)Sb3 l 1 0 (Ph = C6H 5)  
 Abstract    The compounds (Ph4P)4Sb8l 28 (1) and (Ph4P)Sb,Iio (2) were prepared by the reaction of Sbl3 and Ph4PI in acetonitrile (molar ratios 2:1 and 3:1 respectively). The structures of 1 and 2 were determined from single crystal X-ray diffraction data. 1 crystallizes in the triclinic space group P I with a = 1321.7(5), b = 1346.7(5), c = 2201.8(8) pm, a = 104.18(2), ß = 99.92(2), y = 100.33(2)°; 2: monoclinic, C2/c, a = 2371.1(2), b = 745.0(1), c = 2495.1(2) pm, ß = 100.75(1)°. Whereas 1 exhibits isolated SbsI284' ions, the anions of 2 are built up of polymeric chains [Sb3I 10_]x. In both compounds the distorted Sbl6 octahedra are linked by common edges. The Sb—I distances are in the range between 277.4 and 354.8 pm (1) and between 277.4 and 342.4 pm (2). The observed structures do not only depend on stoichiometry. the nature of the counter cations, and the possibility of oligomerisation but also on the wide variety of the Sb—I bond strengths and the different bridges formed by iodine. The lone pair of Sb(III) seems to be predominantly 5s: . 
  Reference    Z. Naturforsch. 42b, 1493—1499 (1987); eingegangen am 30. Juni 1987 
  Published    1987 
  Keywords    Iodoantimonates, Synthesis, Crystal Structure 
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 Identifier    ZNB-1987-42b-1493 
 Volume    42 
11Author    H.-Jürgen Meyer, Joachim PickardtRequires cookie*
 Title    Die Kristallstruktur von Calciumhexacyanoferrat(II)- Hexamethylentetramin-Wasser(l/l/6) Ca 2 [Fe(CN) 6 ] * C 6 H 12 N 4 * 6 H 2 0 The Crystal Structure of Calciumhexacyanoferrate(II)- Hexamethylenetetramine-Water(l/l/6) Ca 2 [Fe(CN) 6 ] * C 6 H 12 N 4 * 6 H : 0  
 Abstract    Ca 2 [Fe(CN) 6 ] • C t ,H 1 2N 4 -6H 2 0 crystallizes in the monoclinic space group B2lb with a = 1130,2(4), b = 1373,5(4), c = 1353,0(4) pm and y = 97,17°. The X-ray single crystal structure determination converged at R -0.055 (2057 reflections). Each of the four Fe(CN) 6 octahedra (Z = 4) in the unit cell is coordinated by six Ca atoms with mean N CY AN — Ca distances of 253.5(3) pm. The Ca atoms are bridged by hexamethylenetetramine and water molecules. 
  Reference    Z. Naturforsch. 43b, 135—137 (1988); eingegangen am 31. Juli 1987 
  Published    1988 
  Keywords    Crystal Structure, Hexacyanoferrate, Hexamethylenetetramine 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0135.pdf 
 Identifier    ZNB-1988-43b-0135 
 Volume    43 
12Author    Gabi Reber, Jürgen Riede, Gerhard MüllerRequires cookie*
 Title    Molecular Structure of (o-Trimethylsilyl- benzyl)diphenylphosphine  
 Abstract    (o-Trimethylsilylbenzyl)diphenylphosphine (1) crystallizes in the monoclinic space group P2 Jn with a = 14.088(2), b = 8.712(1), c = 16.481(2)Ä, ß = 101.63(1)°, V -1981.3Ä\ Z = 4. There is no P-Si interaction in the solid state which is also found for the solution (31 P NMR, l3 C NMR). 
  Reference    Z. Naturforsch. 43b, 915—917 (1988); eingegangen am 18. März 1988 
  Published    1988 
  Keywords    Benzyl-phosphines, Conformation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0915_n.pdf 
 Identifier    ZNB-1988-43b-0915_n 
 Volume    43 
13Author    HerbertW. Roesky, Michael Zimmer, Regine Herbst, GeorgeM. Sheldrick, Prof Heinz, G. WagnerRequires cookie*
 Title    N,N'-Bis(diphenyIphosphino)-S,S-dimethylsulfodiimin — ein Ligand für cyclische Übergangsmetallkomplexe N,N'-Bis(diphenylphosphino)-S,S-dimethylsulfodiimine — a Ligand for Cyclic Transition Metal Complexes  
 Abstract    Me 2 SN 2 P 2 Ph 4 M(CO) 4 complexes (1) (M: la Cr, lb Mo, lc W) have been synthesized from Me 2 S(NPPh 2) 2 and C 7 H s M(CO) 4 . la—lc are stable at room temperature, lb crystallizes in the space group P2,2,2 with cell constants a = 2486.3(2); b = 1488.8(1); c = 882.0(1) pm. 
  Reference    Z. Naturforsch. 43b, 933—936 (1988); eingegangen am 26. Februar 1988 
  Published    1988 
  Keywords    Crystal Structure, Chromium, Molybdenum, Tungsten 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0933.pdf 
 Identifier    ZNB-1988-43b-0933 
 Volume    43 
14Author    Siegfried Pohl, Rainer Lötz, Detlev Haase, Wolfgang SaakRequires cookie*
 Title    Iodoantimonate der Zusammensetzung A + Sb 2 I 7 : Diskrete Anionen in (Me 4 N) 4 Sb 8 I 2 8 und (Me 3 S) 4 Sb 8 I 28 , polymere Ketten in (Me 3 NCH 2 Ph)Sb 2 I 7 (Me = CH 3 , Ph = C 6 H 5 ) Iodoantimonates of Composition A~Sb 2 I 7 ~: Discrete Anions in (Me 4 N) 4 Sb 8 I 28 and (Me 3 S) 4 Sb s I 28 , Polymerie Chains in (Me 3 NCH 2 Ph)Sb 2 I 7 (Me = CH 3 , Ph -C 6 H 5 )  
 Abstract    The reaction of Sbl 3 with Me 4 NI, Me ? SI, and Me^NCH^Phl in acetonitrile (molar ratios 2:1) yields (Me 4 N) 4 Sb 8 I 28 (1). (Me,S) 4 Sb K I 28 (2). and (Me,NCH 2 Ph)Sb : I 7 (3), respectively. The struc-tures of 1—3 were determined from single crystal X-ray diffraction data. 1—3 crystallize in the monoclinic space group P2,/«. 2: a -1434.2(3). b -1484.1(4). c = 2102.6(4) pm. ß = 105.4(1)°, Z = 2. 1: a = 1441.7(1), b = 1545.1(1). c = 2117.3(1) pm. ß = 106.4(1)°, Z = 2. 3: a = 1004.4(1). b = 1378.8(1). c = 1899.3(2) pm. ß = 94.2(1)°. Z = 4. The structures of 1 and 2 are very similar and consist of isolated cations and anions. The Sb s I 28 
  Reference    Z. Naturforsch. 43b, 1144—1150 (1988); eingegangen am 24. Mai 1988 
  Published    1988 
  Keywords    Iodoantimonates, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1144.pdf 
 Identifier    ZNB-1988-43b-1144 
 Volume    43 
15Author    Jörn Müller, PetraEscarpa Gaede, Ke QiaoRequires cookie*
 Title    ^-Olefin-Iridium-Komplexe, XXII [1] C -H -Aktivierung von aromatischen und aliphatischen Solvensmolekülen RH bei der Reaktion von [Cp*IrCI2 ] 2 mit Butadienmagnesium unter Bildung von [Cp*Ir(773-C4H 7)R] sowie Kristallstruktur von [Cp*Ir(i/3-C4H 7)C6H 5] jr-Olefin Iridium Complexes, XXII [1] C -H Activation of Aromatic and Aliphatic Solvent Molecules RH in the Reaction of [Cp*IrCl2 ] 2 with Butadienemagnesium with Formation of [Cp*Ir(?;3 -C4 H 7 )R], and Crystal Structure of [Cp*Ir(773 -C4 H 7 )C6 H 5] Activation of C -H , (l-Methylallyl)(pentamethylcyclopentadienyl)iridium-a-organyl Com­ plexes  
 Abstract    Reactions of [Cp*IrCl2]2 (Cp* = ^3-C5M e5) with [MgC4H6 -2 THF]" at low temperature give [Cp*Ir(^4-C4H6)] together with [Cp*Ir(/73-C4H 7)R] compounds, the latter being formed via C -H activation of solvent molecules RH (RH = benzene, toluene, anisole, thiophene, furane, N-methylpyrrole, pentane, cyclohexane. THF). In the case of pyrrole, C -N -activation occurs. The ratio of syn and anti isomers of the 1-methylallyl com plexes as well as the sites o f C -H activation of RH were investigated by NM R spectrometry. An enantiomorphous crystal of [Cp*Ir(773-C4H7)C6Hs] was characterized by X-ray diffraction analysis which reveals trigonal planar coordination at the Ir atom and an exo, syn conformation o f the 1-methylallyl ligand. A mechanism of the reaction which involves 16-electron intermediates is discussed. The corresponding system [Cp*RhCl2]2/butadienemagnesium/RH gives only [Cp*Rh(>/4-C4H6)], and no C -H activation is observed. 
  Reference    Z. Naturforsch. 49b, 1645—1653 (1994) 
  Published    1994 
  Keywords    Synthesis, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1645.pdf 
 Identifier    ZNB-1994-49b-1645 
 Volume    49 
16Author    D. Frerichs, C. H. Park, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis der Tief-und Hochtemperaturform eines Oxidarsenats des Zinks: Zn0Z n3(A s0 4)2 On the Low and High Temperature Form o f an Oxidearsenate of Zinc: Z n 0 Z n 3( A s 0 4)2  
 Abstract    Single crystals of the low (t-) and high (h-) temperature form o f Z n 0 Z n 3(A s 0 4)2 have been prepared by flux and by C 0 2-L A SER techniques respectively. Both compounds crystal­ lizes monoclinic, space group C2h-P2;/n with the lattice parameters t-Z n 0 Z n 3(A s 0 4)2: a = 9.807(3), b = 8.180(2), c = 9.967(2) A , ß = 116.53(2)°, Z = 4 and h -Z n 0 Z n 3(A s 0 4)2: a = 9.743(3), b = 8.163(8), c = 17.933(2) A , ß = 91.55(2)°, Z = 8. Similarities and differences of the crystal structures will be discussed. 
  Reference    Z. Naturforsch. 51b, 233 (1996); eingegangen am 10. Juli 1995 
  Published    1996 
  Keywords    Zinc, Arsenic, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0233.pdf 
 Identifier    ZNB-1996-51b-0233 
 Volume    51 
17Author    Silke Busche, K. Arsten BluhmRequires cookie*
 Title    Synthese und Kristallstruktur von Dibariumzink-bis(cyclotriborat) Ba2Zn(B30 6)2  
 Abstract    Single crystals of the new compound Ba2Zn(B30 6)2 were obtained by using a B20 3 flux technique. They crystallize in an as yet unknown structure type. X-ray investigations led to space group Cj'-Pl (Nr.2) with lattice parameters a = 715.5(2), b = 720.5(2), c = 1178.9(4), a = 78.96(2)°, /3 = 85.45(2)°, j = 60.12(1)°, Z = 2. The structure is characterized by iso­ lated (B30 6)3_-rings and contains two ninefold coordinated Ba-sites. Zn2+ is tetrahedrally coordinated by oxygen. The relation to the crystal structures of high-temperature BaB20 4 and Ba2Ca(B30 6)2 is discussed. 
  Reference    Z. Naturforsch. 51b, 309—312 (1996); eingegangen am 26. September 1995 
  Published    1996 
  Keywords    Barium, Zinc, Borate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0309.pdf 
 Identifier    ZNB-1996-51b-0309 
 Volume    51 
18Author    Hk Wulff, Müller-BuschbaumRequires cookie*
 Title    Isolierte trigonale S r 0 6-Prismen verknüpfen Kagome-Netze im Strontium-Manganat(I V)-Tellurat( VI): SrMnTe06 Kagome Layers Connected by Isolated Trigonal Sr06 Prisms in the Strontium Manganate(IV) Tellurate(VI): SrMnTe06 L  
 Abstract    Single crystals of the hitherto unknown compound SrM nT e06 have been prepared from Sr(0H)2-8H20 , M n C 0 3(aq) and T e 0 2 in air by crystallization below the melt range. X-ray in­ vestigations showed hexagonal symmetry, space group D3h-P62m, lattice constants a = 5.143(1), c = 5.384(2) A, Z = 1. SrM nTe06 is characterized by staggered [(Mn/Te)60 18] Kagome layers along [001]. These layers are connected by Sr2+ ions, resulting in S r0 6 prisms isolated from each other. The structure is discussed with respect to the connection of Kagome nets in the quaternary oxides of the Ba3Ln40 9 type. 
  Reference    Z. Naturforsch. 53b, 283—286 (1998); eingegangen am 7. November 1997 
  Published    1998 
  Keywords    Strontium, Manganese, Tellurate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0283.pdf 
 Identifier    ZNB-1998-53b-0283 
 Volume    53 
19Author    B. Wedel, L. Wulff, Hk Müller-BuschbaumRequires cookie*
 Title    Isolierte ^[TeOs]-Oktaederketten im Bleitellurat Pb2T e05 Isolated ^ [Te05] Chains of Octahedra in the Lead Tellurate Pb2T e05  
 Abstract    Single crystals of Pb2T e0 5 have been prepared by flux techniques. X-ray investigations showed a new crystal structure with monoclinic symmetry, space group Cj-Cc, a = 13.099(3), b = 5.714(1), c = 7.520(2) Ä, ß = 123,80(3)°, Z = 4. Pb2T e 0 5 is characterized by o[o[Te05] chains of octahedra isolated from each other and incorporated into an edge, corner and face connected frame of P b 0 7 polyhedra. Possible positions o f the lone pair o f electrons of Pb2+ are estimated by calculations of Coulomb terms of lattice energy. 
  Reference    Z. Naturforsch. 53b, 287—290 (1998); eingegangen am 17. November 1997 
  Published    1998 
  Keywords    Lead, Tellurate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0287.pdf 
 Identifier    ZNB-1998-53b-0287 
 Volume    53 
20Author    Thorsten Grob, FrankW. Eller, K. Urt, D. EhnickeRequires cookie*
 Title    Die Kristallstruktur von [Me3PN(H)PMe3]4l 28? einem Polyiodid mit I3~-, lg2--und I144"-Ionen Crystal Structure o f [M e3P N (H )P M e3]4I28, a Polyiodide w ith I3~, I82 -, and I 144~ Ions  
 Abstract    Black-red single crystals of [Me3PN(H)PMe3]4I28 have been prepared by the reaction of [Me3PNPMe3]I with iodine in dichloromethane solution in the presence of Me3SiI and traces of water. The polyiodide crystallizes triclinically in the space group Pi with two formula units per unit cell with the lattice dimensions a = 831.2(1), b = 1661.2(3), c = 1739.0(3) pm, q = 87.26(1)°, ß = 79.48(1)°, 7 = 78.17(1)°. The structure consists of [Me3PN(H)PMe3]2+ ions, linear I3~ ions, z-shaped I8: ~ ions, and zig-zag chains of I I44-ions, the terminal iodine atoms of which form I-H -N hydrogen bridges to the cations. 
  Reference    Z. Naturforsch. 53b, 552—556 (1998); eingegangen am 23. Februar 1998 
  Published    1998 
  Keywords    Polyiodide, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0552.pdf 
 Identifier    ZNB-1998-53b-0552 
 Volume    53 
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