| 103 | Author
| Brigitte Eisenmann, Gerhard Savelsberg, Herbert Schäfer | Requires cookie* | | Title
| Zur Darstellung und Kristallstruktur von Na2CuAs, K2CuAs und K2CuSb Preparation and Crystal Structure of Na2CuAs, K2CuAs and K2CuSb  | | | Abstract
| The three new compounds crystallize orthorhombic, space group Cmcm with Na2CuAs: a = 8.86(2) A, b = 7.22(2) A, c = 5.34(2) A; K2CuAs: a = 10.02(2) A, b = 7.56(2) A, c = 5.89(2) A; KsCuSb: a = 10.50(2) A, b = 7.93(2) A, c = 6.23(2) A. There are Cu-E(V)-Cu-E(V)-zigzag-chains in the structure, in which the Cu-atoms are linearly bonded to the E(V)-atoms. | | |
Reference
| (Z. Naturforsch. 31b, 1344—1346 [1976]; eingegangen am 15. Juli 1976) | | |
Published
| 1976 | | |
Keywords
| Intermetallic Compounds, Crystal Structure, Ternary Arsenides, Ternary Antimonides | | |
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| default:Reihe_B/31/ZNB-1976-31b-1344.pdf | | | Identifier
| ZNB-1976-31b-1344 | | | Volume
| 31 | |
104 | Author
| Helmut Rieskamp, Rainer Mattes | Requires cookie* | | Title
| Fluorreiche Oxofluorovanadate(V): Die Kristallstruktur von [enH2] [VOF5]  | | | Abstract
| The crystal structure of triclinic [enH2][VOF5], prepared in aqueous solution, has been determined from X-ray diffractometer data (i? = 0.076 for 527 reflections). The structure contains monomeric [VOFs] 2--ions. The bond distances are 1.54(1) Ä (terminal oxygen), 1.80(1) (average for the cis-fluorine atoms) and 2.10(1) Ä for the fluorine atom in trans-position to the terminal oxygen atom. This fluorine atom is involved in strong hydrogen bonds originating from the [NHaCH^CH^NEy 2 " 1 -cation with cisoid conformation. Earlier results about the existence of K2VOF5 could not be confirmed. | | |
Reference
| (Z. Naturforsch. 31b, 1453—1455 [1976]; eingegangen am 2. August 1976) | | |
Published
| 1976 | | |
Keywords
| Oxopentafluorovanadates(V), Crystal Structure, Vibrational Spectra | | |
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| default:Reihe_B/31/ZNB-1976-31b-1453.pdf | | | Identifier
| ZNB-1976-31b-1453 | | | Volume
| 31 | |
105 | Author
| Gerhard Cordier, Herbert Schäfer | Requires cookie* | | Title
| Neue intermetallische Verbindungen im arcJi-Ce202S-Strukturtyp New Intermetallic Compounds in the awfa"-Ce202S-Structure Type  | | | Abstract
| The new intermetallic compounds CaMn2Sb2, SrMn2Sb2 and CaMn2Bi2 have been prepared and structurally characterized. They are isotypic and crystallize trigonal in the an^-Ce202S-structure with the lattice constants: CaMn2Sb2: a = 4.54(1), c = 7.48(1), c/a = 1.65. SrMn2Sb2: a = 4.56(1), c = 7.70(1), c/a = 1.69. CaMn2Bi2: a = 4.63(1), c = 7.64(1), c/a = 1.65. | | |
Reference
| (Z. Naturforsch. 31b, 1459—1461 [1976]; eingegangen am 13. August 1976) | | |
Published
| 1976 | | |
Keywords
| Intermetallic Compounds, Crystal Structure, Ternary Antimonides, Ternary Bismutides | | |
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| default:Reihe_B/31/ZNB-1976-31b-1459.pdf | | | Identifier
| ZNB-1976-31b-1459 | | | Volume
| 31 | |
106 | Author
| Z. Naturforsch | Requires cookie* | | Title
| Sr3In2P4 und Ca3ln2As4, Zintlphasen mit Bänderanionen aus kanten-und ecken verknüpften InP4-bzw. InAs4-Tetraedern  | | | Abstract
| The new com pounds Sr3In2P4 and Ca3In2A s4 crystallize in the orthorhom bic system , space group Pnnm (N o. 58), with the follow ing lattice constants: Sr3In,P4: a = 1632.3(6), b = 682.8(3), c = 428.9(2); Ca3In2A s4: a = 1621.2(6), b = 659.5(3), c -430.6(2). In the anionic partial lattice InP4 (In A s4) tetrahedra are connected by com m on edges and corners and form (InP21-)" ((In A s23_)") strings o f alternating four-m em bered and eight-m em -bered rings. | | |
Reference
| Z. Naturforsch. 41b, 1416 (1986); eingegangen am 14. Juli 1986 | | |
Published
| 1986 | | |
Keywords
| Interm etallic C om pounds, Zintl Phases, Crystal Structure | | |
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| default:Reihe_B/41/ZNB-1986-41b-1416.pdf | | | Identifier
| ZNB-1986-41b-1416 | | | Volume
| 41 | |
107 | Author
| Petra Prokop, Rainer Richter, Lothar Beyer | Requires cookie* | | Title
| Zur Reaktion von 2,4-Dioxo-4-ferrocenyl-butansäureethylester mit primären aromatischen Aminen On the Reaction of Ethyl 2,4-Dioxo-4-ferrocenyl-butanoate with Primary Aromatic Amines  | | | Abstract
| Starting from ethyl 2,4-dioxo-4-ferrocenyl-butanoate (1) a series of new ferrocene derivatives has been prepared. While the reaction with o-phenylene diamine leads to two ferrocene-con taining heterocyclic compounds, 4-ferrocenyl-3//-l,5-benzodiazepine-2-carbonic acid ethyl ester (3) and 3-(2-ferrocenyl-2-oxo-ethylidene)-3,4-dihydro-l//-quinoxalin-2-one • H20 (4), reactions with m-and /?-phenylene diamine give both the mono-and disubstituted products 5 -8, respectively. The conversion of 4 by Lawesson's reagent results in 2-ferrocenvl-thieno[2,3-b]quinoxaline (9). The new compounds have been characterized by their 'H , 1 C NMR, and mass spectra. The molecular structures of 4-ferrocenyl-4-oxo-2-phenylamino-but-2-enoic acid ethyl ester 2, and of 4 and 9 have been determined by X-ray crystal structure analysis. | | |
Reference
| Z. Naturforsch. 54b, 849—857 (1999); eingegangen am 12. März 1999 | | |
Published
| 1999 | | |
Keywords
| Ferrocene, /3-Diketones, Enaminoketones, NMR Data, Crystal Structure | | |
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| default:Reihe_B/54/ZNB-1999-54b-0849.pdf | | | Identifier
| ZNB-1999-54b-0849 | | | Volume
| 54 | |
108 | Author
| Tsutomu Okuda, Yoshihiro Kinoshita, Hiromitsu Terao, Koji Yamada | Requires cookie* | | Title
| Structure and Bonding of Bromoantimonate (III) Complexes with Unusual Valency by Means of NQR and Powder X-Ray Diffraction  | | | Abstract
| NQR and powder X-ray diffraction were observed for several bromoantimonate (III) complexes which contain C"H2n+ jNF^ (n = 1 -3) or (C"H2lt + 1)2N H 2 (n = 1 -4) as a cation. The bond character, anion structure, crystal structure, and phase transition are discussed on the basis of the three-center-four-electron bond. A good correlation was found between the halogen NQR frequency and the Sb-X bond length. | | |
Reference
| Z. Naturforsch. 49a, 185—192 (1994); received July 23 1993 | | |
Published
| 1994 | | |
Keywords
| 81Br NQR, Temperature dependence, Phase transition, Crystal structure | | |
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| default:Reihe_A/49/ZNA-1994-49a-0185.pdf | | | Identifier
| ZNA-1994-49a-0185 | | | Volume
| 49 | |
109 | Author
| Jacek Zaleski | Requires cookie* | | Title
| Crystal Structure and Phase Transitions of [C(NH2)3]3Sb2C l9 * 0.9 H 20 A dam Pietraszko  | | | Abstract
| The room temperature structure of [C(NH2)3]3Sb2C l9 ■ 0.9 H 20 (GNCA) was solved. It crystal lizes in the monoclinic C2/c space group with a = 15.275, b = 8.794, c = 17.904 (in Ä), ß = 96.40°, V = 2390 Ä 3, Z = 4. Refinement of the atomic parameters by a least squares methods gave R = 0.042, wR = 0.039 for 1958 reflections with F>4ct(F). The structure consists of polyanionic (Sb2Cl|_)n layers built of deformed corner connected SbX^-octahedra. Two crystallographically inequivalent guanidinium cations are present, one situated between polyanionic layers, the other one together with a disordered water molecule inside cavities formed by polyanions. Temperature X-ray scattering experiments together with DSC studies were carried out above room temperature. Temperature dependence of the lattice parameters between 300 K and 380 K was determined and a phase transition of mixed order at 364 K was revealed. | | |
Reference
| Z. Naturforsch. 49a, 895—901 (1994); received June 7 1994 | | |
Published
| 1994 | | |
Keywords
| Guanidinium, Chloroantimonate, Crystal structure, Phase transition, DSC | | |
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| default:Reihe_A/49/ZNA-1994-49a-0895.pdf | | | Identifier
| ZNA-1994-49a-0895 | | | Volume
| 49 | |
110 | Author
| Hiroyuki Ishida, Hironobu Maeda, Akiko Hirano, Tamotsu Fujimoto, Yoshihiro Kubozono, Setsuo Kashino, Shuichi Emura | Requires cookie* | | Title
| E X A F S S tu d y o n th e P h a s e T r a n s itio n ( P h a s e a ' -5) in C H 3 N H 3 I  | | | Abstract
| The local structure of CH3NH3I around the I" ion in Phase a 'and 8 was studied by iodine K-edge EXAFS. The crystal structure in Phase a ' was redetermined by single crystal X-ray diffraction. The Debye-Waller factor <r(2) derived from EXAFS spectra shows an anomalous behavior around the order-disorder transition temperature from Phase 8 to a '. The phase transition has been interpreted as the disordering process which involves not only the H atoms but also the C atoms in the cation. | | |
Reference
| Z. Naturforsch. 50a, 876—880 (1995); received June 16 1995 | | |
Published
| 1995 | | |
Keywords
| Crystal structure, EXAFS, Phase transition, X-ray diffraction | | |
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| default:Reihe_A/50/ZNA-1995-50a-0876.pdf | | | Identifier
| ZNA-1995-50a-0876 | | | Volume
| 50 | |
111 | Author
| Hiroyuki Ishida, Hiroshi Ono, Ryuichi Ikeda | Requires cookie* | | Title
| Crystal Structure of the High-temperature Solid Phases of Choline Tetrafluoroborate and Iodide  | | | Abstract
| The crystal structure of the highest-and second highest-temperature solid phases of choline tetrafluoroborate and iodide was determined by X-ray powder diffraction. The structure in the highest-temperature phase of both salts is NaCl-type cubic (a = 10.16(2) Ä, Z = 4 for tetrafluorobo-rate; a = 10.08(2) A, Z = 4 for iodide). The second highest-temperature phase of tetrafluoroborate and iodide is CsCl-type cubic (a = 6.198(6) Ä and Z = 1) and tetragonal (a = 8.706(2) A, c = 6.144(6) Ä, and Z = 2), respectively. DSC was carried out for the iodide, where the presence of three solid-solid phase transitions was confirmed. Enthalpy and entropy changes of these transitions were evaluated. | | |
Reference
| Z. Naturforsch. 52a, 679—680 (1997); received June 17 1997 | | |
Published
| 1997 | | |
Keywords
| Crystal structure, Powder X-ray diffraction, Phase transition | | |
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| default:Reihe_A/52/ZNA-1997-52a-0679_n.pdf | | | Identifier
| ZNA-1997-52a-0679_n | | | Volume
| 52 | |
113 | Author
| Hideta Ishihara, Keizo Horiuchi, ThorstenM. Gesing, Shi-Qi Dou, J.-Christian Buhl, Hiromitsu Terao | Requires cookie* | | Title
| I NQR and Crystal Structure Studies of [N(CH 3 ) 4 ] 2 CdI 4  | | | Abstract
| The temperature dependence of 127 1 NQR and DSC as well as the crystal structure at room temperature of the title compound were determined. This compound shows a first-order phase transition of an order-disorder type at 245 K. Eight 127 I(i^i: m = ±5 <-+ ±|) NQR lines of 79. corresponding eight 127 I(^ 2 : m = ±| <-» • ±|) NQR lines were observed at liquid nitrogen temperature. Three 127 I(^i) NQR lines wfth an intensity ratio of 1:1:2 in the order of decreasing frequency were observed just above the transition point and two NQR lines except for the middle-frequency line disappeared around room temperature. This temperature behavior of NQR lines is very similar to that observed in [N(CH 3)4] 2 Hgl4. Another first-order phase transition takes place at 527 K. The structure of the room-temperature phase was redetermined: orthorhombic, Pnma, Z = 4, a = 1342.8(3), b = 975.7(2), c = 1696.5(3) pm. The NQR result of three lines with an intensity ratio of 1:1:2 is in agreement with this structure. The thermal displacement parameters of atoms in both cations and anions are large. | | |
Reference
| Z. Naturforsch. 55a, 225—229 (2000); received October 13 1999 | | |
Published
| 2000 | | |
Keywords
| NQR, DSC, Crystal Structure, Phase Transition | | |
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| default:Reihe_A/55/ZNA-2000-55a-0225.pdf | | | Identifier
| ZNA-2000-55a-0225 | | | Volume
| 55 | |
114 | Author
| W. Haase, R. Mergehenn, W. Krell | Requires cookie* | | Title
| Die Kristallstruktur von Thiocyanato(2-dimethylaminoäthanolato)kupfer(II) The Crystal Structure of Thiocyanato(2-dimethylaminoethanalato)copper(II)  | | | Abstract
| The crystal structure of the title compound has been determined from three-dimensional X-ray diffractometer data. Crystals are monoclinic, space group P2i/c with 8 CU(C4HIONO)SCN units in a cell of dimensions a = 11.951(4), b = 8.954(3), c = 16.805(6) Ä, and ß = 107.5(1)°. The structure was refined by least squares techniques to a final discrepancy factor of 0.041 based on 2234 observed independent reflexions. The compound is polymeric with copper atoms alternately bridged by two oxygen atoms and two thiocyanato groups. The coordination geometry around each copper atom is distorted square pyramidal. The basal plane consists of the two bridging oxygen atoms (mean value Cu-O: 1.914(3) A), the amino nitrogen atom (mean value Cu—N: 2.035(3) A) and the nitrogen atom from the thiocyanato group (mean value Cu-N: 1.908(3) A) while the axial coordination site is occupied by a sulfur atom from a thiocyanato group (mean value Cu-S: 2.979(2) A) centrosymmetric to the first. The magnetic susceptibility of the compound shows a broad maximum at 200 K. | | |
Reference
| (Z. Naturforsch. 31b, 85—89 [1976]; eingegangen am 25. September 1975) | | |
Published
| 1976 | | |
Keywords
| Crystal Structure, Copper Compound, Thiocyanato Bridging, Spin Coupling | | |
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| default:Reihe_B/31/ZNB-1976-31b-0085.pdf | | | Identifier
| ZNB-1976-31b-0085 | | | Volume
| 31 | |
115 | Author
| Klaus-Jürgen Range, Richard Leeb | Requires cookie* | | Title
| Preparation and Crystal Structure of the High Pressure Phase Tm 2 S3-II  | | | Abstract
| Single crystals of the quenchable high pressure phase Trri2S3-II were grown from a TmJ3-flux at 10 kbar, 1600 °C. The crystals are monoclinic, space group P2i/m, with a = 11.110(5) A, 6 = 3.874(3) A, c = 10.872(5) A, ß = 108.88(2) ° and Z = 4. In Tm2S3-II, which is isotypic with Er3ScS6, the four independent thulium atoms are coordinated by six (2 x), seven and eight sulfur atoms. | | |
Reference
| (Z. Naturforsch. 31b, 311—314 [1976]; eingegangen am 7. November 1975) | | |
Published
| 1976 | | |
Keywords
| Thulium Sesquisulfide, High Pressure Phase, Crystal Structure | | |
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| default:Reihe_B/31/ZNB-1976-31b-0311.pdf | | | Identifier
| ZNB-1976-31b-0311 | | | Volume
| 31 | |
116 | Author
| Bernd Grande, Hanskarl Müller-Buschbaum | Requires cookie* | | Title
| Über Oxocuprate, XIV Zur Kristallchemie von Sr2Cu304Cl2 On Oxocuprate, XIV On the Crystal Chemistry of Sr2Cu304Cl2  | | | Abstract
| The new compound Sr2Cu304Cl2 was prepared in melts of SrCl2. A single crystal X-ray examination (a = 546.2, c= 1259.1 pm, space group D^-14/mmm) shows that the octahedral distortion of the [Cu304Cl2] 4 ~-network cannot be explained only by the JAHN-TELLER effect. | | |
Reference
| (Z. Naturforsch. 31b, 405—407 [1976]; eingegangen am 24. November 1975) | | |
Published
| 1976 | | |
Keywords
| Strontium, Copper, Oxide Chloride, Crystal Structure, Coordination | | |
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| default:Reihe_B/31/ZNB-1976-31b-0405.pdf | | | Identifier
| ZNB-1976-31b-0405 | | | Volume
| 31 | |
117 | Author
| K. Diehl, D. Khodadadeh, J. Kummer, Strähle | Requires cookie* | | Title
| L  | | | Abstract
| Upon use of a synthetic method reported earlier by us respective alloys of Na/Sn, Na/Ge and Na/Sb are dissolved in ethylene-diamine and the title compounds precipitated from the solutions in high yield. By recrystal-lisation well shaped, stable crystals are obtain-ed. The crystal structure of [Na4 • 7 en]Sn9 confirms the presence of a Sn9 4 ~-polyhedron which had been suggested by us on the basis of other investigations. The Sn9 4_ -polyhedron may be described as a distorted tricapped trigonal prism. Ethylenediamine is coordi-nated to Na+-ions exclusively. | | |
Reference
| (Z. Naturforsch. 31b, 522—524 [1976]; eingegangen am 16. Februar 1976) | | |
Published
| 1976 | | |
Keywords
| Polyanionic Compounds, Germanium, Tin, Antimony, Crystal Structure | | |
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| default:Reihe_B/31/ZNB-1976-31b-0522_n.pdf | | | Identifier
| ZNB-1976-31b-0522_n | | | Volume
| 31 | |
120 | Author
| | Requires cookie* | | Title
|  | | | Abstract
| G e r h a r d C o r d i e r u n d H e r b e r t S c h ä f e r BaMnSb2, SrMnBi2 and BaMnBi2 have been prepared and structurally characterized. The new compounds are isotypic and crystallize tetragonal in the SrZnBi2 structure with the following constants: BaMnSb2: a = 4.53 ± 0.01 A, c = 24.34 ± 0.03 A, c/a = 5.37. SrMnBi2: a = 4.58 ± 0.01 A , c = 23.13 ± 0.03 A, c/a = 5.05. BaMnBi2: a — 4.63 ± 0.02 A, c = 24.22 i 0.05 A, c/a = 5.23. The transition metal atoms form together with the semimetal atoms sheets of tetragonal pyramids separated by double layers of alkali earth atoms. In these double layers there are inserted Bi/Sb-square nets. | | |
Reference
| (Z. Naturforsch. 32b, 383—386 [1977]; eingegangen am 29. Dezember 1976) | | |
Published
| 1977 | | |
Keywords
| Intermetallic Compounds, Crystal Structure, Ternary Antimonides, Ternary Bismutides | | |
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| default:Reihe_B/32/ZNB-1977-32b-0383.pdf | | | Identifier
| ZNB-1977-32b-0383 | | | Volume
| 32 | |
|