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1Author    R. J. Schubert, K.-J RangeRequires cookie*
 Title    T etra-w-butylammoniumdicyanoaurat(I), (/j-C4H9)4N Au(CN)2 Tetra-/7-butylammonium Dicyanoaurate(I), (az-C4H9)4N A u(C N)2  
 Abstract    Single crystals o f (/j-C4H9)4N A u (C N) 2 were obtained by crystallization using the tempera­ ture decreasing method in a newly developed com puter-controlled apparatus. The colourless crystals aor e monoclinic, space group A 2/n, with a = 20.216(2) Ä, b = 13.130(1) A, c = 9.328(1) A, and ß = 109.69(1)°. The measured density is 1.45 g/cm 3, which agrees with the cal­ culated density o f 1.40 g/cm 3 for Z = 4. The structure was solved by Direct M ethods using 674 independent reflections and refined by least-squares procedures to conventional and weighted R factors o f 0.068 and 0.058, respectively. The nearly linear [A u(C N)2]~-anions form pseudo-hexagonal layers, in which they are arranged parallel to each other. The shortest A u -A u dis­ tance is 8.05 A. The stacking o f the layers produces pseudo-trigonal channels, occupied by the cations. The tetra-«-butylammonium cation has four ordered trans chains with idealized D 2d symmetry (42 m). 
  Reference    Z. Naturforsch. 45b, 1118—1122 (1990); eingegangen am 12. Februar 1990 
  Published    1990 
  Keywords    Tetra-«-butylammonium Dicyanoaurate(I), Crystal Growth, Crystal Structure 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1118.pdf 
 Identifier    ZNB-1990-45b-1118 
 Volume    45 
2Author    Rüdiger Kniep, Axel Wilms, HeinzJürgen Beister, Karl SyassenRequires cookie*
 Title    Crystal Growth and Optical Absorption of Compounds InXY [X = Se, Te; Y = Cl, Br, I]  
 Abstract    The systems IngXs-InYs (X = Se, Te; Y = Cl, Br, I) are quasibinary and contain the intermediate ternary compounds InXY with incongruent melting behaviour. InSeCl and InSeBr show a significant phase width towards the respective trihalides. InTeCl is di-morphous with a stable a-and a metastable ^-modification. Crystals of the ternary compounds are grown by Bridgman technique and their optical absorption behaviour is studied. Phase relations as well as optical absorption are discussed with respect to the various crystal structures of the intermediate ternary phases. 
  Reference    Z. Naturforsch. 36b, 1520—1525 (1981); eingegangen am 13. August 1981 
  Published    1981 
  Keywords    Indiumchalcogenohalides, Phase Relations, Crystal Growth, Structural Relations, Optical Absorption 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1520.pdf 
 Identifier    ZNB-1981-36b-1520 
 Volume    36 
3Author    M. Arcos, L. Uján, FrankKubel H Ans SchmidRequires cookie*
 Title    Crystal Growth and X-Ray Structure of Metastable «-KC0 PO 4  
 Abstract    Crystals o f KC0PO4 were obtained by growth in a gel of tetramethoxysilane/water at 64 °C. The hexagonal crystals have space group P 63, a = 18.206(1), c = 8.5135(8) [Ä], V = 2443.8(4) [A 3]. Z = 24. The structure was solved by single crystal X-ray diffraction methods. The struc­ ture is isotypic with a -K Z n P 0 4. It comprises an ordered three dim ensional network o f alter­ nating C oÖ 4 and P 0 4 tetrahedra. which has rings of six tetrahedra in the xy plane. These rings form tunnels in the [001] direction, where the potassium ions are located. U pon heating, the compound undergoes a phase transition at about 565 °C; on cooling, the phase transition occurs at 449 °C, where it transforms into another structure which is yet unknown. This indicates that the hexagonal structure is a metastable phase. 
  Reference    Z. Naturforsch. 49b, 1256—1262 (1994); received May 4. 1994 
  Published    1994 
  Keywords    Potassium Cobalt Orthophosphate Crystal Structure, Crystal Growth, Metastable Phase Phase Transition 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1256.pdf 
 Identifier    ZNB-1994-49b-1256 
 Volume    49 
4Author    Marcos Luján, Frank Kubel, Hans SchmidRequires cookie*
 Title    Crystal Growth, Room Temperature Crystal Structure and Phase Transitions of K M nP04  
 Abstract    Single crystals of K M nP 04 grown in a KC1 flux show ferroelastic domains. The structure was determ ined on an optically controlled single domain crystal by X-ray diffraction methods. The cell is triclinic with dimensions a = 5.4813(5), b = 8.627(1), c = 8.887(1), in A, a = 87.73(1)°, ß = 89.10(1)°, y = 88.01(1)°, VM = 419.6(1) A 3 and Z = 4. The structure is closely related to the stuffed /3-tridymite type. DTA experiments between room tem perature and 1000 °C and polarized light microscopy observations showed four phase transitions: at 165, 330, 353 and 707 °C. 
  Reference    Z. Naturforsch. 50b, 1210—1214 (1995); received February 20 1995 
  Published    1995 
  Keywords    Manganese Potassium Orthophosphate, Crystal Structure, Crystal Growth, Phase Transitions 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1210.pdf 
 Identifier    ZNB-1995-50b-1210 
 Volume    50 
5Author    F. K. Ubela, H. Billb, H. H. Ag, Em AnRequires cookie*
 Title    Low Temperature Crystal Growth and Structure of Ordered Ba7F12Cl2  
 Abstract    of composition Ba7F12Cl2 were obtained by a reaction at room temperature be­ tween Ba2+/Cl"/F_ in a gel of agar-agar/water. The hexagonal crystals have space group P6, «=1064.69(8), c=417.89(5)pm, V=410.24(8) 106 pm3 and Z=l. The anions form a propeller type network located in tunnels parallel to the chex axis; the chloride ions are located at the center on the propeller axes. The Ba2+ ions are coordinated by a (distorted) tricapped trigo­ nal environment of fluoride and chloride anions. Disorder is present for one particular Ba2+ site. The average structure is isotypic with the structure of Pb7F)2Cl2. 
  Reference    Z. Naturforsch. 54b, 515—518 (1999); received November 30 1998 
  Published    1999 
  Keywords    Bariumfluorochloride, Hexagonal Crystal Structure, Crystal Growth, Low Temperature Gel Method Crystals 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0515.pdf 
 Identifier    ZNB-1999-54b-0515 
 Volume    54 
6Author    Hans Bock, N. Orbert, N. Agel, C. Hristian, N. ÄtherRequires cookie*
 Title    Wechselwirkungen in Molekülkristallen, 147 [1, 2 ]. Isostrukturelle Wirt/Gast-Einschluß-Verbindungen von N,N'-Ditosyl- p-phenylendiamin mit Aceton, Cyclopentanon, Cyclopent-2-en-l-on, 1,3-Dioxolan, Tetrahydrofuran und 2,5-Dihydrofuran  
 Abstract    Interactions in M olecular Crystals, 147 [1, 2], Isostructural H ost/G uest-Inclusion Com pounds o f N ,N'-D itosyl-/?-phenylenediam ine w ith A cetone, C yclopentanone, C yclopent-2-ene-l-one, 1,3-Dioxolane, Tetrahydro­ furane, and 2,5-D ihydrofurane H errn P ro fe sso r M a n fre d E igen g e w id m e t 
  Reference    Z. Naturforsch. 53b, 1401—1412 (1998); eingegangen am 19. August 1998 
  Published    1998 
  Keywords    N, N'-Ditosyl-p-phenylenediamine, Inclusion Compounds, Crystal Growth, Structures, Host/Guest-Relations 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1401.pdf 
 Identifier    ZNB-1998-53b-1401 
 Volume    53 
7Author    Hans Bock, N. Orbert, N. Agel, C. Hristian, N. ÄtherRequires cookie*
 Title    Wechselwirkungen in Molekülkristallen, 149 [1 -3]. Wirt/Gast-Einschlußverbindungen von NjN'-Ditosyl-p-phenylendiamin: Die Wasserstoffbrücken-Addukte mit Morpholin; Pyridin, N,N-Dimethylformamid und Dimethylsulfoxid  
 Abstract    Interactions in M olecular C rystals, 149 [1 -3]. H ost/G uest-Inclusion Com pounds of N ,N'-D itosyl-/?-phenylenediam ine: The H ydrogen Bonded Adducts with M orpholine, Pyridine, N ,N -D im ethylform am ide, and D im ethylsulfoxide H errn P ro fe sso r M a n fred E igen g e w id m e t 
  Reference    Z. Naturforsch. 53b, 1425—1439 (1998); eingegangen am 19. August 1998 
  Published    1998 
  Keywords    N, N'-Ditosyl-/?-phenylenediamine, Inclusion Compounds, Hydrogen Acceptor and Donor Guest Molecules, Crystal Growth, Structures 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1425.pdf 
 Identifier    ZNB-1998-53b-1425 
 Volume    53 
8Author    Hans Bock, Norbert Nagel, Peter Eller, Herrn Professor, Manfred EigenRequires cookie*
 Title    Wechselwirkungen in Molekülkristallen, 153 [1 -3]. Wirt/Gast-Einschlußverbindungen von N,Nf-Ditosyl-/?-phenylendiamin- Derivaten: Die Kristallstrukturen von N,N'-Di(4-ethyl-benzosulfuryl)-/?- phenylendiamin und seinen Aggregaten mit Aceton und Cyclopentanon Interactions in Molecular Crystals, 153 [1 -3]. Host/Guest-Inclusion Compounds of N,N'-Ditosyl-/?-phenylenediamine Derivatives: The Crystal Structures o f N,N'-Di(4-ethyl- benzosulfuryl)-/?-phenylenediamine and its Aggregates with Acetone and Cyclopentanone  
  Reference    Z. Naturforsch. 54b, 491—500 (1999); eingegangen am 26. Oktober 1998 
  Published    1999 
  Keywords    N, N'-Di(4-ethyl-benzosulfuryl)-p-phenylenediamine, Inclusion Compounds, Ketone Guest Molecules, Crystal Growth, Structures 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0491.pdf 
 Identifier    ZNB-1999-54b-0491 
 Volume    54 
9Author    Hans Bock, Norbert Nagel, Peter Eller, Herrn Professor, Manfred EigenRequires cookie*
 Title    Wechselwirkungen in Molekülkristallen, 154 [1 -3]. Wirt/Gast-Einschlußverbindungen von NjN'-Ditosyl-p-phenylendiamin- Derivaten: Die Kristallstrukturen von N,N'-Di(4-nitro-benzosulfuryl)-/?- phenylendiamin und seinen Wasserstoffbrücken-Addukten mit Cyclo- pentanon, Cyclohexanon, Tetrahydrofuran, N,N-Dimethylformamid- sowie Pyridin Interactions in M olecular Crystals, 154 [1 -3]. Host/Guest-Inclusion Compounds o f N,N'-Ditosyl-/?-phenylenediamine Derivatives: The Crystal Structures o f N,N'-Di(4- nitro-benzosulfuryl)-/?-phenylenediamine and its Hydrogen-Bonded Adducts with Cyclopentanone, Cyclohexanone, Tetrahydrofurane, N,N-Dimethylformamide as well as Pyridine  
  Reference    Z. Naturforsch. 54b, 501—514 (1999); eingegangen am 26. Oktober 1998 
  Published    1999 
  Keywords    N, N'-Di(4-nitro-benzosulfuryl)-p-phenylenediamine, Inclusion Compounds, Hydrogen Acceptor Guest Molecules, Crystal Growth, Structures 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0501.pdf 
 Identifier    ZNB-1999-54b-0501 
 Volume    54