Ueber eine Verbindung des Sarkosins mit Chlorzink

Ohne Zusammenfassung     

Ba4FeTa10O30, eine neue Verbindung mit Verwandtschaft zum NaNb6O15F-Typ

Ba₄FeTa₁₀O₃₀, a New Compound with Relations to the NaNb₆O₁₅F-Type Ba₄FeTa₁₀O₃₀ was prepared by high temperature reactions (CO₂-Laser-technique) and investigated by X-ray single crystal studies (space group C_2v¹⁴–Amm2, a = 3.906, b = 10.201, c = 14.990 Å, Z = 1). The new compound has a tunnel structure, related to the tungsten bronzes, but with more relationship to the NbO₆-octahedra network of NaNb₆O₁₅F.     

1,3-Bis[tert-butyl(di-tert-butylfluorsilyl)amino]trisulfan – eine Verbindung mit FSiNSSSNSiF-Helix

1,3-Bis[tert-butyl(di-tert-butylfluorosilyl)amino]trisulfane – a Compound with FSiNSSSNSiF Helix The lithium derivative of tert-butyl(di-tert-butylfluorosilyl)-amine ( 1 ) reacts with sulfur or selenium to give the bis[(fluorosilyl)-amino]di- and -trisulfanes 2, 3 and -selane 4 , respectively. The trisulfane 3 crystallizes from n-hexane and exhibits a helical structure (X-ray analysis).     

Synthese und Kristallstruktur von Te3O3(PO4)2, einer Verbindung mit fünffach koordiniertem Tellur(IV)

Synthesis and Crystal Structure of Te₃O₃(PO₄)₂, a Compound with 5‐fold Coordinate Tellurium(IV) Polycrystalline Te₃O₃(PO₄)₂ is formed during controlled dehydration of (Te₂O₃)(HPO₄) with (Te₈O₁₀)(PO₄)₄ as an intermediate product. Colourless single crystals were prepared by heating stoichiometric amounts of the binary oxides P₂O₅ und TeO₂ in closed silica glass ampoules at 590 °C for 8 hours. The crystal structure (P2₁/c, Z = 4, α = 12.375(2), b = 7.317(1), c = 9.834(1)Å, β = 98.04(1)°, 1939 structure factors, 146 parameters, R[F² > 2σ(F²)] = 0.0187, wR2(F² all) = 0.0367) was determined from four‐circle diffractometer data and consists of [TeO₅] polyhedra und PO₄ tetrahedra as the main building units. The framework structure is made up of cationic zigzag‐chains of composition [Te₂O₃]²⁺ which extend parallel to [001] and anionic [Te(PO₄)₂]^2— units linked laterally to these chains. This leads to the formation of [Te₂O₃][Te(PO₄)₂] layers parallel to the bc plane which are interconnected via weak Te‐O bonds.     

Ba5AlIr2O11: Eine neue Verbindung mit Iridium(IV,V)

Ba₅AlIr₂O₁₁: A New Compound with Iridium(IV, V) The hitherto unknown compound Ba₅AlIr₂O₁₁ was prepared and investigated by X-ray technique (space group D–Pnma, a = 18.8360; b = 5.7887; c = 11.1030 Å; Z = 4). Iridium has an octahedral coordination in each case two octahedra are connected by a plane. These double octahedra form with corner connected AlO₄ tetrahedra [Ir₂AlO₁₁]^10? units. Ba₅AlIr₂O₁₁ is not related to the perovskite type compounds.     

CsPdCl3 – eine Verbindung mit [Pd2Cl6]-Baugruppen und anorganischem Kation

CsPdCl₃ – A Compound with Isolated [Pd₂Cl₆] Groups and an Inorganic Cation The crystal structure of CsPdCl₃ has been characterized by X-ray powder diffraction methods. Meanwhile it was possible to isolate single crystals and to confirm the structure by single crystal X-ray investigations. CsPdCl₃ crystallizes orthorhombic in space group Ibam (No. 72) with a = 13.724(1), b = 10.579(1), c = 8.499(1) Å, and Z = 8. CsPdCl₃ is a compound with a dinuclear [Pd₂Cl₆]^2– group and a cesium cation. Formerly such groups are only found in combination with large “organic” cations so far.     

Malzoxazin,eine tricyclische Verbindung aus Gerstenmalz

Maltoxazine, a Tricyclic Compound from Malt A new tricyclic compound, named maltoxazine, has been isolated from malt as well as from the reaction products formed in a model reaction of maltose with proline. The structure of maltoxazine ( 1 ) has been established by ¹H- and ¹³C-NMR. spectroscopy. The formation of 1 in several model reactions is strongly correlated with the formation of maltol and 5-hydroxy-5,6-dihydromaltol.     

Komplexe des m-Methylbenzamidoxims mit Co(II) und Ni(II)

The complex formation of Co²⁺ and Ni²⁺ with m-methyl benzamide oxime was studied spectrophotometrically in 60% methanol. The complexes [Co(mMB)₂] and [Ni(mMB)₂] appear in alkaline solution. The formation constants are lgK=4.15±±0.04 for [Co(mMB)₂] and lgK=4.08±0.04 for [Ni(mMB)₂] at 25°. The decadic molar extinction coefficients are ε=5000 for [Co(mMB)₂] and ε=560 for [Ni(mMB)₂], resp.