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1Author    Holger Kahlert, Hans-Uwe SchusterRequires cookie*
 Title    Ternary Phases of Sodium or Potassium with Elements of the 2 b-and 5 b-Group  
 Abstract    In the systems Na(K)-Zn(Cd)-As(Sb) we found the following phases: NaZnAs, NaZnSb, KCdAs, KCdSb (tetragonal symmetry); KZnAs, KZnSb (hexagonal symmetry); NaCdAs, NaCdSb (orthorhombic symmetry). 
  Reference    (Z. Naturforsch. 31b, 1538—1539 [1976]; eingegangen am 30. Juli 1976) 
  Published    1976 
  Keywords    Ternary Phases, Sodium, Potassium 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1538_n.pdf 
 Identifier    ZNB-1976-31b-1538_n 
 Volume    31 
2Author    Klaus Jonas, Volker Wiskamp, Professor KarlRequires cookie*
 Title    Olefin-, Aromaten-und Allylkomplexe des Vanadiums aus Vanadocen [1] Olefine, Arene, and Allyl Complexes of Vanadium from Vanadocene [1]  
 Abstract    Vanadocene (Cp2V) was reduced with potassium metal in tetrahydrofuran (THF) to give a 1:1 adduct K[Cp2V] which has been isolated as [K(THF)(Et20)][Cp2V]. The reactions of this compound with various molecules (L) capable of functioning as ligands were investigated. They cause the liberation of KCp and the formation of several new organovanadium compounds. The products of these reactions were: [K(THF)2 5][CpVCsHi2] for L = butadiene (C4H6), [K(THF)i.5][CpVC6H5P(C6H5)2] for L = P(C6H5)3, CpV(C4H6)P(CH3)3 for L = mixture of C4H6 and P(CH3)3. Vanadocene was reacted with allyllithium to yield LiCp and [LiTMEDA][CpV(C3H5)2] (TMEDA =: (CH3)2NCH2CH2N(CH3)2), which was transformed via allylbromide to CpV(C3Hö)2. Structures and reactivities of these new organovanadium complexes are discussed. I. Einführung Unlängst berichteten wir in Übersichtsaufsätzen [2, 3] zusammenfassend über eine von uns ent-wickelte Synthesemethode, durch die reaktive Über-gangsmetall-Olefin-und Alkalimetall-Übergangs-metall-Olefin-Komplexe des Nickels, Cobalts und Eisens auf einfache Weise zugänglich geworden sind, z.B. mit Ethen als Olefin: Et20 Cp2Co + K + 2 C2H4 • CpCo(C2H4)2 + KCp THF Cp2Co + 3K + 4C2H4 • K[Co(C2H4)4] + 2 KCp THF Cp2Fe + 2 Li + 2 C2H4 Li[CpFe(C2H4)2] + LiCp Wir haben nun überprüft, ob sich dieses Synthese-prinzip, das auf der reduktiven Ablösung der Cp-Ringe von den entsprechenden Metallocenen mittels Alkalimetall in Gegenwart von Olefinen beruht, auch auf das elektronenärmere Vanadocen über-tragen läßt. Überdies war zu klären, ob neben Olefinen auch andere Komplexbildner wie Kohlen-monoxid oder Phosphane oder gar Mischungen von Komplexbildnern eingesetzt werden können. Hier-über sowie über einen zweiten Synthese weg, der 
  Reference    Z. Naturforsch. 38b, 1113—1121 (1983); eingegangen am 7. März 1983 
  Published    1983 
  Keywords    Vanadium, Potassium, Vanadocene, Allyllithium, Olefines 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1113.pdf 
 Identifier    ZNB-1983-38b-1113 
 Volume    38 
3Author    Hans-Uwe Schuster, Sandör RozsaRequires cookie*
 Title    Darstellung und Struktur von K2PdAs2 Preparation and Structure of K2PdAs2  
 Abstract    K2PdAs2 was prepared from the elements. It crystallizes orthorhombically, space group Cmcm, a = 653.6 pm, 6= 1412.1pm, c = 602.5 pm, forming infinite Pd-As2-zig-zag-ribbons and conforming to a filament. 
  Reference    Z. Naturforsch. 34b, 1167—1168 (1979); eingegangen am 15. Mai 1979 
  Published    1979 
  Keywords    Ternary Compound, Potassium, Palladium, Arsenic, Crystal Data 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1167_n.pdf 
 Identifier    ZNB-1979-34b-1167_n 
 Volume    34 
4Author    M.A S Goher3, M.A M Abu-Youssefb+, F. A. Mautner, H. P. FritzerbRequires cookie*
 Title    Crystal Structure Investigation of Two Polymeric Chromium(III) Azide Complexes; KCr(pyridine)4(N3)4 and RbCr(pyridine)3(N3)4. A Structure Containing /i( 1,3) and //(1,1,3) Bridging Azido Ligands between Chromium and Rubidium Centered Polyhedra  
 Abstract    The structures of two polymeric complexes of chrom ium (III) azide with pyridine, KCr(py)4(N 3)4 (1), and RbCr(py)3(N 3)4 (2), were determined by X-ray crystallography. Crystal data: 1, C20H 20N 16CrK, monoclinic, space group C2/c, a = 1611.2(5), b = 1050.6(3), c = 1609.0(5) pm, ß -91.69(3)°, Z = 4 and Rw = 0.037 for 923 diffractometer data; 2, C l5H 15N 15CrRb, monoclinic, space group P 2 Jn, a = 1311.9(3), b = 1139.0(4), c = 1523.3(4) pm, ß = 109.39(2)°, Z = 4 and Rw = 0.046 for 2336 data. The crystal structure of 1 contains six-coordinated chromium and potassium cations with two pyridine ligands and four y«(l,3) bridging azido groups forming a three-dimensional net­ work structure. The chromium atoms are trans-coordinated by the pyridine ligands, whereas the potassium cations are m -coordinated. The polymeric complex 2 features di-//(l,l,3) azido bridged C rR bN 2 rings, distorted octahedral chromium(III) coordination geometry, seven-coordinated rubidium, and di-//(l,3) azido bridges which link the binuclear RbCr(pyridine)3(N 3)2 moieties into infinite chains parallel to the b axis. 
  Reference    Z. Naturforsch. 47b, 1754—1758 (1992); received June 22 1992 
  Published    1992 
  Keywords    Azide, Chromium, Crystal Structure, Pyridine Complexes, Potassium, Rubidium 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1754.pdf 
 Identifier    ZNB-1992-47b-1754 
 Volume    47 
5Author    Z. NaturforschRequires cookie*
 Title    NaK9Tl13: Eine neue Verbindung an der Zintl-Grenze mit isolierten, von Thallium besetzten Tl17-Ikosaedern  
 Abstract    NaK9T l13 (a = 1152.0(1) pm, Im 3, Z = 1, RI -0.029, wR2 = 0.0724) has been prepared from the elements and characterized by single crystal X-ray diffraction. The title compound contains isolated T l12 icosahedra, which are centered by T1 atoms. The icosahedra are in an a-W-type arrangement. 
  Reference    Z. Naturforsch. 49b, 935 (1994); eingegangen am 14. Februar 1994 
  Published    1994 
  Keywords    Crystal Structure, Intermetallic Compound, Sodium, Potassium, Thallium 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0935.pdf 
 Identifier    ZNB-1994-49b-0935 
 Volume    49 
6Author    F.-D Martin, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis von K4CuV50 15C1 On K4 CuV5 0 1 5 C1  
 Abstract    Single crystals of K4CuV50 15C1 were prepared by crystallization from the melt. The yellow brown crystals show tetragonal symmetry, space group C 4-P 4, a = 8.8690, c = 5.4196 A , Z = 1. K4CuV50 15C1 is strongly related to KBaCuV20 7Cl and K2V 30 8. V (l) shows V 20 7 double tetrahedra connected by square V 0 5 and C u 0 4Cl pyramids. The crystal structure is discussed with respect to the related compounds. 
  Reference    Z. Naturforsch. 49b, 1459—1462 (1994); eingegangen am 9. Juni 1994 
  Published    1994 
  Keywords    Potassium, Copper, Vanadium Oxide-Chloride, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1459.pdf 
 Identifier    ZNB-1994-49b-1459 
 Volume    49 
7Author    D. Frerichs, Hk Müller-BuschbaumRequires cookie*
 Title    Ein Beitrag zur Kristallchemie von Verbindungen mit Johillerit-Struktur: On the Crystal Chemistry of Compounds with Johillerite Structure: KCo3 Cu(As2 5 8 V0 4 2 )O i2  
 Abstract    Single crystals of KCo3Cu(As2.58Vo42) 0 12 were prepared by solid state reactions below the melting point of the reaction mixture (K 2C 0 3, CuO, CoC20 4, V 20 5 and 3 A s20 5 -5 H 20) . It crystallizes with m onoclinic symmetry, space group C |h-C 2 lc, a = 12.207, b = 12.730, c = 6.811 A , ß = 113.69°, Z -4. The structure type is characterized by isolated twisted-square C u 0 4-polygons, C o 0 6-octahedra and a special 4+4-coordination o f the potassium ion. A s5+ and V*+ are in tetrahedral coordination with a partly statistical distribution of these ions. 
  Reference    Z. Naturforsch. 49b, 1463—1466 (1994); eingegangen am 13. Juni 1994 
  Published    1994 
  Keywords    Potassium, Cobalt, Arsenic, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1463.pdf 
 Identifier    ZNB-1994-49b-1463 
 Volume    49 
8Author    Z. NaturforschRequires cookie*
 Title    K34[Zn2oIn85]: Eine ternäre Auffüllungsvariante des /?-rhomboedrischen Bors  
 Abstract    In the crystal structure of K34[Zn2()In85] (a = 1827.7(5) pm, c = 3980.5(8) pm, R3m , Nr. 166, Z = 3, R1 = 0.056, wR2 = 0.124) the In and Zn atoms form the /3-rhombohedral boron structure. The structure contains In84 Samson polyhedra, and clusters of 18 In and 10 Zn atoms, forming three In12 icosahedra sharing two common triangular faces. The potassium atoms occupy the centres of truncated tetrahedra -forming the Samson polyhedra -and Kasper polyhedra. 
  Reference    (Z. Naturforsch. 50b, 23 [1995]; eingegangen am 16. Juni 1994) 
  Published    1995 
  Keywords    Crystal Structure, Intermetallic Compound, Potassium, Zinc, Indium 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0023.pdf 
 Identifier    ZNB-1995-50b-0023 
 Volume    50 
9Author    F.-D Martin, Hk Miiller-BuschbaumRequires cookie*
 Title    Ein Beitrag zur Kristallchemie der Alkali-Erdalkalimetall-Oxovanadate: Synthese und Struktur von K3CaV50 15 A Contribution to the Crystal Chemistry of A lkaline-Alkaline-Earth Oxovanadates: Synthesis and Structure of K3CaV50 15  
 Abstract    Single crystals of K3CaV50 15 have been prepared by crystallization from melts. The com ­ pound shows a new structure type with orthorhombic symmetry, space group D ^-C m m a, a = 25.953(5), b = 15.688(3), c = 7.804(4) Ä , Z = 8. Typical features of K3CaV50 15 are isolated cyclic V40 12 and V60 18 groups o f corner sharing V 0 4 tetrahedra. 
  Reference    Z. Naturforsch. 50b, 243 (1995); eingegangen am 13. Septem ber 1994 
  Published    1995 
  Keywords    Potassium, Calcium, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0243.pdf 
 Identifier    ZNB-1995-50b-0243 
 Volume    50 
10Author    H. Szillat, Hk Müller-BuschbaumRequires cookie*
 Title    Uber das Oxomolybdat AgKCu3Mo4Oi6 mit Silber in siebenfacher Koordination About the Oxomolybdate AgKCu3Mo4O i6 with Silver in Seven-Fold Coordination  
 Abstract    Single crystals of AgKCu3Mo40 16 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. This compound crystallizes with monoclinic symmetry, space group C |h-P 2 Je, a = 5.056(1), b = 14.546(4), c = 19.858(9) Ä, ß = 86.64(5)°, Z = 4. The crystal structure of AgKCu3Mo40 16 is closely related to K2Cu3Mo40 16 showing ribbons of edge-sharing C u 0 6 and AgÖ7 polyhedra. The ribbons are linked by tetrahedrally coordinated molybdenum and K2O 10 groups. Another kind of M o 0 4 tetrahedra occupies the cavities inside the ribbons. The crystal structure and the coordination of silver, copper, potas­ sium and molybdenum by oxygen are discussed with respect to K2Cu3Mo40 16. 
  Reference    Z. Naturforsch. 50b, 252—256 (1995); eingegangen am 19. September 1994 
  Published    1995 
  Keywords    Crystal Structure, Copper, Silver, Molybdenum, Potassium 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0252.pdf 
 Identifier    ZNB-1995-50b-0252 
 Volume    50 
11Author    Hk Müller-Buschbaum, St GallinatRequires cookie*
 Title    Synthese und Röntgenstrukturanalyse von KCuGd2Mo40 16 und KCuTb2Mo40 16 Synthesis and X-Ray Analysis of KCuGd2Mo4O i6 and KCuTb2Mo40 I6  
 Abstract    Single crystals of the so far unknown compounds KCuGd2M o4O t6 (I) and KCuTb2M o40 16 (II) have been prepared by flux technique. The compounds crystallize with monoclinic sym­ metry. space group C^h-C 2 /c with (I): a = 5.278(2), b = 12.666(5), c = 19.604(14) Ä; ß = 92.76(6)°; (II): a = 5.259(13), b = 12.616(3), c = 19.556(9) A, ß = 92.93(4)°, Z = 4. M olyb­ denum exhibits tetrahedral coordination. The surroundings of copper can be described by distorted tetrahedra, capped by two more distant oxygen atoms, and the rare earth ions show a square antiprism. Potassium is inside an irregular polyhedron. The relationship of the structures o f (I) and (II) is discussed with respect to the KLnMo2Os type compounds. Coulomb term calculations of the lattice energy indicate an oxidation state of copper higher than Cu1. 
  Reference    Z. Naturforsch. 50b, 1794—1798 (1995); eingegangen am 29. Mai 1995 
  Published    1995 
  Keywords    Potassium, Copper Rare Earth Molybdenum Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1794.pdf 
 Identifier    ZNB-1995-50b-1794 
 Volume    50 
12Author    Silke Busche, K. Arsten BluhmRequires cookie*
 Title    Ba2KZn3(B306)(B60 13)  
 Abstract    Single crystals of the new compound Ba2KZn3(B30 6)(B60 | 3) were obtained by using a B20 3 flux technique; they crystallize in an as yet unknown structure type. X-ray investigations led to the space group C '-P l (Nr.2) with lattice parameters a = 705.2(2), b = 712.5(2), c = 1880.3(6), a = 93.43(3)°, ß = 90.72(2)°, 7 = 119.57(2)°, Z = 2. The structure contains (B30 6)3~-rings and a new discrete (B60 13)8~ anion, which is composed of two B 0 4 and two B20 5 units. Zn-+ is tetrahedrally coordinated by oxygen and two out of three tenfold coordinated Ba-sites are statistically occupied by Ba2+ and K+. 
  Reference    Z. Naturforsch. 51b, 319—324 (1996); eingegangen am 26. September 1995 
  Published    1996 
  Keywords    Barium, Potassium, Zinc, Borate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0319.pdf 
 Identifier    ZNB-1996-51b-0319 
 Volume    51 
13Author    O. Schrandt, Hk Müller-BuschbaumRequires cookie*
 Title    K + auf einer mit C a2+ unterbesetzten Punktlage in Ca3( V 0 4) 2: Ein Beitrag über K C a 10V 7O 28 K + at an D eficient Ca2+ Point Position in C a3( V 0 4) 2: On K C a 10V 7O 28  
 Abstract    Single crystals o f K C a ^ V y O ,« have been prepared by crystallization from flux. The yellow-green crystals show rhombohedral symmetry (trigonal space group C3V-R3c, a = 10.830(1), c = 37.860(1) A , Z = 6). The differences o f the crystal chemistry are discussed with respect to the isotypic compound Ca3(V 0 4) 2. K + replaces exclusively Ca2+ ions at one deficient point position. 
  Reference    Z. Naturforsch. 51b, 473—476 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Potassium, Calcium, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0473.pdf 
 Identifier    ZNB-1996-51b-0473 
 Volume    51 
14Author    O. Schrandt, Hk Müller-BuschbaumRequires cookie*
 Title    Geordnete Metallverteilung in K B a V 0 4 und K S rV 0 4 mit /?-K2S 0 4-Struktur Ordered Metal Distribution in K B a V 0 4 and K S r V 0 4 Showing p -K 2S 0 4 Structure  
 Abstract    Single crystals of K B a V 0 4 (I) and K S rV 0 4 (I I) have been prepared by crystallization from V 20 5 flux. The yellowish crystals show orthorhombic symmetry, space group D'^-Pnma with (I): a = 7.774(2), b = 5.899(1), c = 10.375(2) A , (II): a = 7.400(2), b = 5.812(1), c -9.961(1), Z = 4. Both compounds show an ordered distribution o f K + and Ba2+ and Sr2+ respectively. The different sizes of the K 0 1() and BaOy (S r 0 9) polyhedra are discussed with respect to those of the /3-K2S 0 4 structure, considering the calculations o f the Coulomb terms of lattice energy. 
  Reference    Z. Naturforsch. 51b, 477—480 (1996); eingegangen am 5. September 1995 
  Published    1996 
  Keywords    Potassium, Strontium Barium, Vanadium Oxid, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0477.pdf 
 Identifier    ZNB-1996-51b-0477 
 Volume    51 
15Author    R. Einhard KanneRequires cookie*
 Title    Isolation and Characterization of a Potassium Specific Ionophore from Streptococcus fuecalis  
 Abstract    The synthesis of a potassium and rubidium specific ionophore by S treptococcu s faecalis has been proved, using bilayer measurements. The characteristics of this substance agree with the ones, published for free mobile carriers, such as valinomycin and the macrotetrolides. 
  Reference    (Z. Naturforsch. 32c, 926 [1977]; received August 24 1977) 
  Published    1977 
  Keywords    Potassium, Ionophores, Transport, Antibiotics, Black Lipid Membranes 
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 TEI-XML for    default:Reihe_C/32/ZNC-1977-32c-0926.pdf 
 Identifier    ZNC-1977-32c-0926 
 Volume    32 
16Author    Reinhard Matthes, Hans-Uwe SchusterRequires cookie*
 Title    Synthese und Struktur der Phasen K2CdSn und K2CdPb Synthesis and Structure of the Phase K2CdSn and K2CdPb  
 Abstract    orthorhombically, with space group Ama2 = Cmc2, a = 645.8 pm, b = 860.2 pm, c — 1095.5 pm. The structure is built of a potassium-3D-net forming eight-edged channels parallel to the a-axis; these channels are penetrated by infinite Cd-Pb-zigzag-chains. The powder-diagram shows the homologous phase K2CdSn (a = 643.2 pm, b = 854.3 pm, c = 1087.7 pm) to be isotypic to K2CdPb. 
  Reference    Z. Naturforsch. 34b, 541—543 (1979); eingegangen am 28. Dezember 1978 
  Published    1979 
  Keywords    Ternary Phases, Potassium, Cadmium, 4B-Element, Crystal Data K2CdPb crystallizes 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0541.pdf 
 Identifier    ZNB-1979-34b-0541 
 Volume    34 
17Author    Holger Szillat, Hanskarl Müller-BuschbaumRequires cookie*
 Title    Synthese und Kristallstruktur von KCuHo2Mo40 16 Synthesis and Crystal Structure of K C uH o2M o40 I6  
 Abstract    Single crystals o f K C uH o2M o40 16 have been prepared by recrystallisation from melts and investigated by X-ray diffractometer techniques. The compound crystallizes with m onoclinic symmetry, space group C 2/c, a = 521.6(1), b = 1251.3(2), c = 1953.1(2) pm, ß = 92.903(18)°, Z -4. K C uH o2M o40 16 represents a new structure type characterized by H oO s and alternate CuO6/K O 10 polyhedra chains. The connection o f these polyhedra chains to each other and by M o 0 4 tetrahedra is described and the crystal structure discussed with respect to related com ­ pounds o f the C uLnM o2Os and K L nM o20 8 types. 
  Reference    Z. Naturforsch. 49b, 350 (1994); eingegangen am 10. Dezember 1993 
  Published    1994 
  Keywords    Crystal Structure, Copper, H olm ium, M olybdenum, Potassium 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0350.pdf 
 Identifier    ZNB-1994-49b-0350 
 Volume    49 
18Author    M. Ichael Schmidt, Annette Schier, Hubert SchmidbaurRequires cookie*
 Title    Magnesium Bis[D(-)-Mandelate] Dihydrate and Other Alkaline Earth, Alkali, and Zinc Salts of Mandelic Acid  
 Abstract    , and zinc D(-)mandelates have been prepared from the parent mandelic acid and equivalent quantities (1:1 / 2:1) of the corresponding metal hydroxides in water. Colourless polycrystalline products are obtained from the aqueous solutions by evaporation of the solvent. The alkali, ammonium and strontium salts are anhydrous, the calcium and barium salts are monohydrates, the magne­ sium salt is a dihydrate, and the zinc salt a trihydrate. The crystal and molecular structure of the magnesium salt has been determined by single crystal X-ray diffraction methods (mono­ clinic, space group P2i, Z = 2). The lattice contains isolated complexes with hexacoordinate magnesium atoms chelated by two mandelate anions through one of their carboxylate oxygen atoms and the alcoholic hydroxyl group. Two water molecules in cis position are completing the octahedral coordination sphere. [MgtQITO^MfTO^] is thus a true mononuclear magnesium complex. Its stability and non-hygroscopic properties suggest its use as a magnesium and/or mandelate drug. 
  Reference    Z. Naturforsch. 53b, 1098—1102 (1998); received July 23 1998 
  Published    1998 
  Keywords    Mandelic Acid, Magnesium Mandelate, Alkaline Earth Mandelates, Alkali Mandelates, Zinc Mandelate Lithium, sodium, potassium, ammonium, magnesium, calcium, strontium, barium 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1098.pdf 
 Identifier    ZNB-1998-53b-1098 
 Volume    53