| 101 | Author
| H. P. Fritz | Requires cookie* | | Title
| The Stannides RE R hSn (RE = Ho -Yb) and ScTSn (T = Pd, Pt) -Structure Refinements and 119Sn Mössbauer Spectroscopy  | | | Abstract
| The stannides RERhSn (RE = Ho -Yb) and ScTSn (T = Pd, Pt) were prepared by reaction of the elements in sealed tantalum tubes in a high-frequency furnace, by arc-melting, or by a tin-flux technique in quartz tubes. The rhodium based stannides crystallize with the ZrNiAl type structure, space group P62m. The four structures were refined from single crystal X-ray data: a = 754.5(3), c = 377.1(1) pm, wR2 = 0.0357, 233 F 2 values for HoRhSn, a = 753.3(1), c = 372.16(8) pm, wR2 = 0.0721, 233 F 2 values for ErRhSn, a = 753.7(3), c = 369.0(2) pm, wR2 = 0.0671,233 F 2 values for TmRhSn, and a = 753.17(5), c = 366.53(4) pm, wR2 = 0.0566, 180 F 2 values for YbRhSn with 14 parameters for each refinement. ScPdSn and ScPtSn adopt the HfRhSn type, a superstructure of ZrNiAl, space group P62c: a = 747.5(1), c = 710.2(1) pm, for ScPdSn, and a = 738.37(9), c = 729.47(9) pm, wR2 = 0.0452,369 F 2 values, 18 variables for ScPtSn. Structural motifs in these stannides are transition metal centered trigonal prisms formed by the rare earth and tin atoms. While these prisms are regular in the rhodium based stannides, significant distortions occur in ScPdSn and ScPtSn. The formation of the superstructure can be ascribed to packing reasons. The shortest interatomic distances occur between the transition metal (T) and tin atoms. These atoms form three-dimensional [FSn] networks in which the rare earth atoms fill distorted hexagonal channels. The series RERhSn displays a somewhat unique behavior. The a lattice parameter is more or less independent of the rare earth element, while the c lattice parameter shows the expected lanthanoid contraction. ll9Sn Mössbauer spectroscopic data of the rhodium stannides show signals at isomer shifts varying from 1.77 to 1.82 mm/s subject to quadrupole splitting between 0.75 to 0.82 mm/s. | | |
Reference
| Z. Naturforsch. 56b, 589—597 (2001); received April 12 2001 | | |
Published
| 2001 | | |
Keywords
| Stannides, Crystal Structure, Mössbauer Spectroscopy | | |
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| default:Reihe_B/56/ZNB-2001-56b-0589.pdf | | | Identifier
| ZNB-2001-56b-0589 | | | Volume
| 56 | |
102 | Author
| Thom As Fickenscher, G. Unter Kotzyba, Rolf-D Ieter, H. Offm, Ann, R. Ainer Pöttgen, H. P. Fritz | Requires cookie* | | Title
| Synthesis, Structure, and Magnetic Properties of EuAgCd and YbAgCd  | | | Abstract
| New intermetallic compounds EuAgCd and YbAgCd were synthesized in quantitative yield by reaction of the elements in sealed tantalum tubes in a high-frequency furnace. Both com pounds were investigated by X-ray diffraction on powders and single crystals: KHg2 type, Imma, a = 490.41(8), b = 771.0(1), c = 834.4(2) pm, wR2 = 0.0624, 255 F values, 12 variables for EuAgCd, and MgZn2 type, Pb^/mmc, a = 584.66(5), c = 946.83(9) pm, wR2 = 0.0502, 187 F 2 values, 11 variables for YbAgCd. Owing to the very small difference in scattering power, no long range ordering of the silver and cadmium atoms is evident from the X-ray data, although Ag-Cd ordering is expected. The silver and cadmium atoms randomly occupy the mercury and zinc positions of the KHg2 and MgZn2 type structures, respectively. In EuAgCd the [AgCd] substructure consists of strongly puckered, orthorhombically distorted Ag3 Cd3 hexagons, while a three-dimensional network of face-and comer-sharing tetrahedra is observed in YbAgCd. The rare earth atoms fill the space between the Ag3 Cd3 hexagons (EuAgCd) or within the three-dimensional tetrahedral network (YbAgCd). Magnetic susceptibility measurements in dicate Pauli paramagnetism for YbAgCd and Curie-Weiss behavior above 60 K for EuAgCd with an experimental magnetic moment of 7.82(3) /j b/Eu indicating divalent ytterbium and europium. Ferromagnetic ordering at Tc = 28.0(5) K is observed for EuAgCd. At 2 K and 5 T the saturation magnetization is 5.85(5) /iß/Eu. | | |
Reference
| Z. Naturforsch. 56b, 598—603 (2001); received April 12 2001 | | |
Published
| 2001 | | |
Keywords
| Cadmium, Crystal Structure, Magnetic Properties | | |
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| default:Reihe_B/56/ZNB-2001-56b-0598.pdf | | | Identifier
| ZNB-2001-56b-0598 | | | Volume
| 56 | |
103 | Author
| | Requires cookie* | | Title
| Zur Kenntnis der Erdalkaliantimonide und -wismutide Sr2Bi, Ba2Sb, Sr5Bi3, Ba5Sb3 und Ba5Bi3  | | | Abstract
| On the Earth-Alkali-A ntim onides and Bismutides Sr2Bi, B a2Sb, Sr5Bi3, B a5Sb3 and B a5Bi3 B r i g i t t e E i s e n m a n n und K l a u s D e l l e r The new compounds Sr2Bi, B a2Sb, Sr5B i3, B a5Sb3 and Ba5B i3 were prepared and their structures determined. The A 2B-compounds crystallize tetragonal bodycentered and are isotypic to Ca2Sb, Ca2Bi and Sr2Sb. The A5B 3-compounds build up the Mn5Si3-structure type. In both structures the element (V) atoms are coordinated only to earth alkali atoms. | | |
Reference
| (Z. Naturforsch. 30b, 66—72 [1975]; eingegangen am 23. September 1974) | | |
Published
| 1975 | | |
Keywords
| Earth Alkali Antimonides, Earth Alkali Bismutides, Crystal Structure | | |
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| default:Reihe_B/30/ZNB-1975-30b-0066.pdf | | | Identifier
| ZNB-1975-30b-0066 | | | Volume
| 30 | |
104 | 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 | |
105 | 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 | |
106 | 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 | |
107 | 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 | |
111 | 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 | |
112 | 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 | |
113 | 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 | |
116 | 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 | |
117 | Author
| W. Muschick, Hk Müller-Buschbaum | Requires cookie* | | Title
| Ein Beitrag zur Kristallchemie dreiwertiger Seltenerdoxide Zur Stabilisierung der m onoklinen B-Form  | | | Abstract
| Single crystals of 1 — a'Ho203 : xCaO (x = 0.07), CaHoC>2.5 (A) and Cao.5H 01.5O2.75 (B) were prepared by high temperature reaction and investigated with X-ray single crystal data. It can be shown that small amounts of CaO stabilize the monoclinic B-Typ of rare earth oxides. Phase (A) and (B) cannot be seen as a stabilized B-type crystal because they have an new crystal structure with space group C.7h-P 2 i/m, a = 656.6, b = 356.7, c = 529.4pm , ß = 92.3°; a = 650.2, b = 352.4, c = 584.5, ß = 92.3°. | | |
Reference
| (Z. Naturforsch. 32b, 495—498 [1977]; eingegangen am 15. Februar 1977) | | |
Published
| 1977 | | |
Keywords
| Holmium, Thulium, Calcium, X-ray, Crystal Structure | | |
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| default:Reihe_B/32/ZNB-1977-32b-0495.pdf | | | Identifier
| ZNB-1977-32b-0495 | | | Volume
| 32 | |
118 | Author
| | Requires cookie* | | Title
| Über die Tricyanatomercurate KHg(NCO)3 und RbHg(NCO)3 - Synthesen, Kristallstrukturen und Schwingungsspektren  | | | Abstract
| On th e Cyanatom ercurates K H g(N C O)3 and R bH g(N C O)3 -Syntheses, Crystal Structures and V ibrational Spectra G e r h a r d T h i e l e u n d P e t e r H i l f r i c h B y m ixing aqueous solutions of Hg(CH3COO)2 and KOCN the white precipitate K 2 Hg3(NCO)8 is formed. When recrystallised from CH3OH colorless crystals of the compound KHg(NCO)3 are obtained. The crystal structure analysis (space group Pnma; a — 1015.2(6) pm, b = 399.3(3) pm, c = 1772.9(9) pm) shows a distorted KCdCl3 arrange ment w ith isolated Hg(NCO)2 molecules, K+ and NCO~ ions. The vibrational spectra in the range of 250-3000 cm-1 are discussed. The rubidium compound is isotypous (a = 1019.0(6) pm, b = 411.6(4) pm, c = 1820.5(8) pm). | | |
Reference
| (Z. Naturforsch. 32b, 1239—1243 [1977]; eingegangen am 25. Juli 1977) | | |
Published
| 1977 | | |
Keywords
| Cyanatomercurate, Cyanato Complex, Crystal Structure, Vibrational Spectra | | |
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| default:Reihe_B/32/ZNB-1977-32b-1239.pdf | | | Identifier
| ZNB-1977-32b-1239 | | | Volume
| 32 | |
120 | Author
| Cyclic Diazastannylenes, Iii, M. Veith | Requires cookie* | | Title
| Cyclische Diazastannylene, DI 1 Die Kristall-und Molekülstruktur der monoklinen Phase von 1.3-Di-feri-butyl-2.2-dimethyl-1.3.2.4A 2 -diazasilastannetidin The Crystal and Molecular Structure of the Monoclinic Phase of l,3-Di-feri-butyl-2,2-dimethyl-l,3,2,4A 2 -diazasilastannetidine  | | | Abstract
| The crystal and molecular structure of the monoclinic phase of l,3-di-£eri-butyl-2,2-dimethyl-l,3,2,4A 2 -diazasilastannetidine has been determined from three-dimensional X-ray data collected on a two-circle diffractometer at —120 °C (MoKa radiation, 2623 re-flexions, R — 0,050). The crystals are monoclinic, space group C 2/c, with cell dimensions a = 10.655(5), b = 25.75(1), c = 17.33(1) A, ß = 106.8(1)° and Z = 12. Four monomeric (crystal site symmetry 2 (C2)) and four dimeric units (crystal site symmetry I (Cj)) are present in the structure interacting over tin-tin (3.68 A). Remarkable are the very short Sn-N bond (2.09 A) in the monomer and the donation bond Sn-N (2.39 Ä) in the dimer. The coordination of the tin atoms in the different units is discussed in detail. | | |
Reference
| (Z. Naturforsch. 33b, 7—13 [1978]; eingegangen am 5. September/6. Oktober 1977) | | |
Published
| 1978 | | |
Keywords
| Diazastannylenes, X-ray, Molecular Structure, Crystal Structure | | |
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| default:Reihe_B/33/ZNB-1978-33b-0007.pdf | | | Identifier
| ZNB-1978-33b-0007 | | | Volume
| 33 | |
|