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21Author    Frank Borkenhagen, Ion Neda, H. Olger Thönnessen, PeterG. Jones, R. Einhard, Schm UtzlerRequires cookie*
 Title    Synthesis and Characterization o f 2-Substituted 5 Darstellung und Charakterisierung von 2-substituierten 5,6-Benzo-l-methyl  
 Abstract    ,6 -B en zo -l-m eth y l-3 -R -l,3 ,2 -diazaphosphorin-4-ones (R = 2-M orpholinoethyl, 1-Adam antyl) C ontaining Phosphorus w ith Coordination N um bers T hree, Four and Five The reaction of N-methylisatoic anhydride with 2-morpholinoethylamine or 1-amino-adamantane furnished N-methyl-N'-(2-morpholinoethyl)anthranilamide 1 and N-methyl-N'-(l-adamantyl)anthranilamide 2, respectively. 1 and 2 are intermediates in the synthesis of the 2-chloro-3-methyl-1,3,2 A'-diazaphosphorinones 3 and 4 by reaction of 1 and 2 with PCI,. The reaction of 3 with bis(2-chloroethyl)amine hydrochloride/triethylamine or (2-chloroethyl)amine hydrochloride/triethylamine formed the 2-substituted diazaphosphorinones 5 and 6. Hydrolysis of 3 led to the 2-oxo-A4P-compound 7. The reaction of 6 with hexafluoroacetone furnished the (A5) phosphorane 8. 5 reacted with C7H8Cr(CO)4 to form complex 9 whereas oxidation of 5 with the H20 2: urea 1:1 adduct yielded the phosphoryl compound 10. The crystal structure of 1 displays two independent molecules that show different chain conformations. Both molecules form chains parallel to the y-axis by intermolecular N (am ide)-H -0(am ide) bonds. The crystal structure of 6 shows a half-boat conformation for the phosphorinone ring; the P atom lies out of the plane. Again the molecules are linked by H-bonds into chains parallel to the y-axis. 
  Reference    Z. Naturforsch. 51b, 1627—1638 (1996); eingegangen am 14. März 1996 
  Published    1996 
  Keywords    Diazaphosphorinones, Oxidative Addition, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1627.pdf 
 Identifier    ZNB-1996-51b-1627 
 Volume    51 
22Author    M. Onoheteroarylborates [, Norbert Kuhn3, Heike Kotowski3, Dieter Bläserb, Roland BoesebRequires cookie*
 Title    Monoheteroarylborate [1]  
 Abstract    The heteroaryl borates Li[C4Me4NBH3] (6) and Na[C3H 3N2(BMe3)2]* 2 C4HgO (8) are ob­ tained by treatment of Li[C4Me4N] and Na[C3H3N2] with Me2S • BH3 and BMe3, respectively. The X-ray structure of [Na(C4H 80) 6][C3H 3N 2(BM e3)2] (10) is reported. 
  Reference    Z. Naturforsch. 52b, 351—354 (1997); eingegangen am 28. Oktober 1996 
  Published    1997 
  Keywords    Borates, Pyrroles, Imidazoles, X-Ray 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0351.pdf 
 Identifier    ZNB-1997-52b-0351 
 Volume    52 
23Author    N. Orbert Kuhn, Riad Faw, M. Anfred, Steim Ann, JörgW. Iethoff, HerrnRequires cookie*
 Title    Zur Reaktion von Derivaten des l,3-Dimethyl-2-iminoimidazolins mit CS2 [1]  
 Abstract    1,3-Dimethyl-2-iminoimidazoline (4, ImNH) reacts with CS2 to give the imidazolium salt [ImNH2][(ImNCS2)2H] (7) in which two dithioformimide fragments are linked by a hydrogen bridge. From the trimethylsilyl derivative ImNSiMe3 (11) and CS2 the adduct ImNSiMe3 • CS2 (12) is obtained which reacts with oxygen to give the disulfide (ImNCS2) (14). The X-ray structures of 7 and 14 were determined. 
  Reference    Z. Naturforsch. 52b, 609—614 (1997); eingegangen am 19. Februar 1997 
  Published    1997 
  Keywords    Imidazoles, Carbon Disulfide, X-Ray 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0609.pdf 
 Identifier    ZNB-1997-52b-0609 
 Volume    52 
24Author    Haruhiko Yokoyama, Saeko Suzuki, Masuo Goto, Kazuteru Shinozaki, Yuriko Abe, Shin-Ichi IshiguroRequires cookie*
 Title    X -R a  
 Abstract    y D if fr a c tio n S tu d y o f th e S o lv a tio n S tr u c tu r e o f th e C o b a lt (I I) I o n in N ,N -D im e th y lf o rm a m id e S o lu tio n Dedicated to Prof. Hitoshi Ohtaki on the occasion of his 60th birthday The solvation structure of Co2+ in N,N-dimethylformamide (DMF) has been studied by X-ray diffraction measurements on cobalt (II) and magnesium (II) Perchlorate solutions of the same concen­ tration, using an isostructural substitution method. The radial distribution function revealed three distinct peaks assigned to the oxygen, amido carbon (CJ, and nitrogen atoms of six planar DMF molecules in the first coordination sphere around the metal atom. The distance from the cobalt atom to each atom (O, Cx, N) is 213,299, and 423 pm, respectively. This indicates that the Co-O-Cj bond angle is 122-123° and the metal atom is close to the O-Cj-N plane of the DMF molecule. 
  Reference    Z. Naturforsch. 50a, 301—306 (1995); received September 28 1995 
  Published    1995 
  Keywords    Cobalt, N,N-dimethylformamide, Solvation, X-ray, Structure 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-0301.pdf 
 Identifier    ZNA-1995-50a-0301 
 Volume    50 
25Author    Alessandro Coda, Vittorio Tazzoli, RobertA. Shaw, Türsen DemirRequires cookie*
 Title    KEITH PROUT* and N. MARK STEVENS  
  Reference    (Z. Naturforsch. 31b, 687—688 [1976]; received February 2 1976) 
  Published    1976 
  Keywords    Polyvalent Compounds, Iodine, X-ray, Bond-lengths Variations 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0687_n.pdf 
 Identifier    ZNB-1976-31b-0687_n 
 Volume    31 
26Author    Hk Müller-Buschbaum, W. SchmachtelRequires cookie*
 Title    Über Erdalkalimetalloxogallate, VI Zum Problem der Mischkristallbildung zwischen CaGa204 und CaAl204 On Alkaline Earth Metal Oxogallates, VI About Mixed Crystal Formation of CaGa204-CaAl204  
 Abstract    Mixed crystals of the formulae CaGaA104 (1) and CaGao.5Al1.5O4 (2) were investigated by X-ray single crystal work. 1 shows a tetrahedral orientation like that of CaGa 2 0 4 (monokl.), 2 another one of CaAl 2 04. A discussion of the different polyhedral arrangement of the stuffed tridymite structures is given. 
  Reference    (Z. Naturforsch. 31b, 1604—1606 [1976]; eingegangen am 2. September 1976) 
  Published    1976 
  Keywords    Aluminium, Calcium, Gallium Oxide, Mixed Crystals, X-ray 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1604.pdf 
 Identifier    ZNB-1976-31b-1604 
 Volume    31 
27Author    Requires cookie*
 Title    Über Oxocuprate, XX Ein Erdalkalioxocuprat(II) mit geschlossenen Baugruppen: BaCu02 About Oxocuprates, X X  
 Abstract    Alkaline-earth Oxocuprate(II) with Closed Structural Groups: B aC u02 R. K ipka und H k. M ü l l e r -B u s c h b a u m In stitu t für Anorganische Chemie der C hristian-A lbrechts-U niversität K iel The new alkaline-earth oxocuprate(II) BaCu0 2 w as prepared and in v estig a ted by single crystal X -ray m ethods. (Space group: 0 ^ -I m 3 m , la ttice con stan t: a = 1827 pm .) The distribution o f 360 atom s per unit cell leads to a com plicated polyhedral fram ework w ith Cu2+ in w ell known square coordination. One of th e B a 2+ positions has th e extraordinary coordination number 24. 
  Reference    (Z. Naturforsch. 32b, 121—123 [1977]; eingegangen am 15. November 1976) 
  Published    1977 
  Keywords    Barium, Copper, O xygen, X -ray, Single crystal 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0121.pdf 
 Identifier    ZNB-1977-32b-0121 
 Volume    32 
28Author    Requires cookie*
 Title    Röntgenographische Strukturuntersuchung von Cäsiumhexaoxo-tetrahydroxo-pentaborat-2-dimethylsulfoxid X-ray Study of the Structure of Cesiumhexaoxo-tetrahydroxo-pentaborate-2-dimethyl Sulfoxide  
 Abstract    The compound Cs[Bs0 6 (OH)4 ] • 2 DMSO was prepared by hydrolysis of tris(methoxy)-borane in organic solvents with small amounts of water in presence of cesium ierf-butylate and recrystallized in DMSO (dimethyl sulfoxide). Cs[Bs0 6 (0 H)4 ] • 2 DMSO crystallizes in the monoclinic space group P2i/a with a = 9.593(2), 6 = 19.179(4), c = 11.585(2) Ä, ß = 119.99(2)° and Z — 4. The crystal structure was determined by single-crystal diffracto­ meter data and refined to a conventional R value of 9.9%. The crystal structure consists of chains of pentaborate anions [Bs0 6 (OH)4 ]-linked by hydrogen bonds. The cesium cation and the DMSO molecules join the chains to sheets by coordination and hydrogen bonds respectively. 
  Reference    (Z. Naturforsch. 32b, 268—274 [1977]; eingegangen am 4. November/7. Dezember 1976) 
  Published    1977 
  Keywords    X-ray, Crystal Structure, Isopolyanions, Polyborates 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0268.pdf 
 Identifier    ZNB-1977-32b-0268 
 Volume    32 
29Author    W. Muschick, Hk Müller-BuschbaumRequires 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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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0495.pdf 
 Identifier    ZNB-1977-32b-0495 
 Volume    32 
30Author    Cyclic Diazastannylenes, Iii, M. VeithRequires 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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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0007.pdf 
 Identifier    ZNB-1978-33b-0007 
 Volume    33 
31Author    Hk Müller-Buschbaum, M. HarderRequires cookie*
 Title    Zur Kenntnis von Ba2Fe2 Fe9 3 Aln034 About Ba2Fe2 2+ Fe9 3+ Alii034  
 Abstract    Single crystals of the compound Ba2FenAln034 were prepared by solid state reac-tion (1700 °C) of Ba0-Fe203-Al203 mixtures. The crystal structure was investigated by X-rav data (space group D6h-P63/mmc, lattice constants: a = 565.3, c = 2281.0 pm). Ba2FenAln034 is isotypic with Na20 • 11 AI2O3, the structure of)S-alumina. 
  Reference    Z. Naturforsch. 33b, 146—148 (1978); eingegangen am 8. Dezember 1977 
  Published    1978 
  Keywords    Barium, Iron, Aluminium, X-ray, Crystal Structure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0146.pdf 
 Identifier    ZNB-1978-33b-0146 
 Volume    33 
32Author    Herbert Binder, Dieter SellmannRequires cookie*
 Title    Röntgen-photoelektronenspektroskopische Untersuchungen an Pentacarbonyl- Chrom-und -Wolfram-Komplexen mit Stickstoffliganden c X-ray Photoelectron Studies of Pentacarbonyl Chromium and Tungsten Complexes with Nitrogen Ligands  
 Abstract    The ionization energies of some chromium and tungsten pentacarbonyl complexes of the type [M(CO)5] xL (L = N2H2, N2H4, NH3; x = 1 or 2 for N2H4 or a; = 1 for N2H2) are reported. The results are discussed in terms of the effects of tr-donor and 7r-acceptor bonds on XPS data. Satellite lines, which can be explained in terms of a shake-up process, give information about the nature of the metal-ligand bond. These shake-up processes are, to a large extent, specific to the atoms of the acceptor groups. The spectroscopic and chemical importance of multi-peak structures of XPS bands is emphasised. 
  Reference    Z. Naturforsch. 33b, 173—179 (1978); eingegangen am 21. Dezember 1977 
  Published    1978 
  Keywords    X-ray, PE Spectra, Monosubstituted Pentacarbonyls, Chromium, Tungsten 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0173.pdf 
 Identifier    ZNB-1978-33b-0173 
 Volume    33 
33Author    HeinzP. Fritz, Helmut Gebauer, Peter Friedrich, Peter Ecker, Reinhold Artes, Ulrich SchubertRequires cookie*
 Title    Elektrochemische Synthesen, XIV [1] Radikalkation-Salze des Naphthalins Electrochemical Syntheses, XIV [1]. Radical Cation Salts of Naphthalene  
 Abstract    By anodic oxidation of naphthalene in H2CCI2/O.O2 m Bu4NPF6 at —45 °C dark red-violet crystals of (CioHshPFö can be obtained by electrocrystallisation. They are stable at low temperatures, however, decompose on warming. In solution and in the poly-crystalline state these radical cation salts show only narrow e.p.r. signals without h.f.s. The specific conductivity of a polycrystalline pellet at room temperature was determined to be 0.12 ±0.046 Ohm -1 cm -1 . The structure determination of (CioHs^PFe yielded the tetragonal space group P42/n, Z = 2, a = b = 1156(2), c = 640(1) pm. Patterson synthesis and difference Fourier analyses showed the compound to have a columnar stacking of CioHg units the long molecular axes of which are twisted alternately by 90° around a screw axis in c-direction, and the molecular planes of which are 320 pm apart. The PFß -ions have four nearest CioHs neighbours lying in pairs in parallel planes 63 pm above and below that plane of PF6~ perpendicular to the c-axis and containing a PF4 group. This is the first established case for a columnar structure of a pure hydrocarbon radical cation. (CIOH8)2AsF6 is isomorphous. 
  Reference    Z. Naturforsch. 33b, 498—506 (1978); eingegangen am 21. Februar 1978 
  Published    1978 
  Keywords    Naphthalene Radical Cation, X-ray, Columnar Structure, Conductivity 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0498.pdf 
 Identifier    ZNB-1978-33b-0498 
 Volume    33 
34Author    Tetraphenylphosphonium-Isopolymolybdates, Roger Grase, Joachim FuchsRequires cookie*
 Title    Über Tetraphenylphosphonium-Isopolymolybdate  
 Abstract    From acidified sodium molybdate solutions mixtures of two polymolybdates are precipitated by addition of tetraphenylphosphonium ions. The pure compounds obtainable by separation with selective organic solvents were identified analytically and by their vibrational spectra as octamolybdate, [P(C6Hs)4]4Mo8026, with "Lindqvist structure" and as hexamolybdate, [P(C6Hs)4Mo60i9. They are characterized by their UV-VIS spectra and X-ray powder patterns. The precipitation of the hexamolybdate from strong acidic solution can be used analytically for the determination of molybdenum. 
  Reference    Z. Naturforsch. 33b, 533—536 (1978); eingegangen am 20. Januar 1978 
  Published    1978 
  Keywords    Isopolymolybdates, Preparation, Vibrational Spectra, X-ray, UV 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0533.pdf 
 Identifier    ZNB-1978-33b-0533 
 Volume    33 
35Author    Hans-Dieter Hausen, Herbert Binder, Wolfgang SchwarzRequires cookie*
 Title    Die Kristallstruktur von Tetramethylstiboniumtetrachlorogallat [(CH3)4Sb] + [GaCl4]- The Crystal Structure of Tetramethylstibonium Tetrachlorogallate [(CH3)4Sb]+[GaCl4]  
 Abstract    Tetramethylstiboniumtetrachlorogallate crys-tallizes in the hexagonal space group P6smc with two formula units per cell. The lattice constants are a=b = 768.8 pm and c= 1251.2 pm. The structure shows isolated cationic and anionic tetrahedra, which are only slightly distorted. The averaged bond lengths are: Sb-C 212.6 pm and Ga-Cl 217.2 pm. In good agreement with the short Ga-Cl distance (the shortest of all compounds ((CH3)nGaCl4_B)~; n = 1-3) are the measured ionization energies of Ga-3d-electrons and the calculated Pauling Qp-values. 
  Reference    Z. Naturforsch. 33b, 567—569 (1978); eingegangen am 1. März 1978 
  Published    1978 
  Keywords    Tetramethylstibonium, Tetrachlorogallate, Crystal Structure, X-ray 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0567_n.pdf 
 Identifier    ZNB-1978-33b-0567_n 
 Volume    33 
36Author    T.Stanley Cameron, RuthE. Cordes, FlorenceA. JackmanRequires cookie*
 Title    Synthesis and Crystal Structure of iu-Oxo-bis(phosphenyl-or^o-toluidide)  
 Abstract    The title compound was synthesised in an attempt to prepare phosphenyl-tri-orJ/io-toluidine, X-ray crystallographic studies show that it contains a P-O-P bridge with extensively hydrogen bonding between -^P=0 and H-N < groups. The P-N bond lengths are different and this can be attributed to some combination of hydrogen bonding and varying p Z7-d Z7 interactions along the bond. 
  Reference    Z. Naturforsch. 33b, 728—730 (1978); received April 21 1978 
  Published    1978 
  Keywords    X-ray, Crystal Structure, Phosphorus-Nitrogen Bond Lengths 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0728.pdf 
 Identifier    ZNB-1978-33b-0728 
 Volume    33 
37Author    R. Hansel, J. Schulz, A. Pelter, M. T. Ayoub, R. ReinhardtRequires cookie*
 Title    Über das Verhalten von 5-Hydroxy-Kawainen gegen Alkali Behaviour of 5-Hydroxykawain Derivatives under Mild Alkaline Conditions  
 Abstract    Treatment of cis-dihydroxykawainol = rel (5R, 6R)-(±)-5-hydroxy-4-methoxy-6-phenylethyl-5,6-dihydro-2H-pyran-2-on (eis-3) with potassium hydroxide in methanol (2.5%, 1 h, room temp.) leads to a 1:1 mixture of the corresponding erythro-butenolide 7 and threo-butenolide 8 by a ring contraction process that may have analogies with the biosynthesis of the piperolides 15. Trans-3 gives the same yields (about 70%) of the same mixture (7 and S), which can be separated by silica-gel columns. Starting from mixtures of cis-5-hydroxykawain (C?Ö'-4) and Zrans-5-hydroxykawain (trans-4), there were prepared and described the two epimeric dehydro-butenolides 9 and 10 and their O-methyl-derivatives 11 and 12. The threo-and erythro-series show consistant differences between ,75,6 and the X H NMR spectra. The constitution and configuration of (±)-erythro-5-(l-methoxy-3-phenylallyl)-4-methoxy-2(5H)-furanone (11) were established by X-ray analysis. 
  Reference    Z. Naturforsch. 33b, 1020—1025 (1978); eingegangen am 5. Juni 1978 
  Published    1978 
  Keywords    5-Hydroxykawain Derivatives, Erythrobutenolides, Threobutenolides, X-ray, Piperolides 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1020.pdf 
 Identifier    ZNB-1978-33b-1020 
 Volume    33 
38Author    H. Pausch, Hk, Müller-BuschbaumRequires cookie*
 Title    Zur Kristallstruktur von SrLaNi04 On the Crystal Structure of SrLaNi04  
 Abstract    Single crystals of SrLaNi04 were prepared with a new high temperature and high oxygen pressure method (C02-Laser radiation). The X-ray investigation shows, that this com-pound belongs to the K2NiF4-type (a — 381.3; c = 1268.7 pm; space group D^-14/mmm), with a stretched octahedral oxygen coordination around Ni 3+ . The octahedral distortion can only be explained by a geometrical effect. 
  Reference    Z. Naturforsch. 34b, 378—379 (1979); eingegangen am 20. November 1978 
  Published    1979 
  Keywords    Single Crystal, X-ray, Jahn-Teller Effect 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0378.pdf 
 Identifier    ZNB-1979-34b-0378 
 Volume    34 
39Author    Joachim Fuchs, Ernst-Peter FlindtRequires cookie*
 Title    Darstellung und Strukturuntersuchung von Polywolframaten Ein Beitrag zur Aufklärung des Parawolframations A A Contribution to the Paratungstate A Problem  
 Abstract    Polytungstates are obtained by the reaction of hydrated tungsten (VI) oxide with bases or salts after occasional addition of organic solvents. With liquid ammonia the as yet unknown ditungstate, (NH4)2W2Ü7, is produced. Its IR spectrum has few absorption bands suggesting a very simple constitution. Piperidine yields 5 compounds according to varied experimental conditions, which all exhibit approximately paratungstate composi-tions but different crystal habits, lattice parameters, solubility and IR spectra. Structure determinations indicate that two of these compounds are heptatungstates, the anion of which, W7024 6-, has the same structure as the heptamolybdate ion, Mo7024 6 ~. From a comparison of their Raman spectra with the spectrum of a freshly acidified sodium tungstate solution (designated as Paratungstate A) it may be concluded that the heptatungstate ion is the predominant species in such a solution. The anion structure of the previously described tributylammonium(5:24):tungstate [(GiHg^NHJsHaW^C^o was elucidated by X-ray methods. Here the tungsten atoms show the same arrangement as in the a-dodecatungstatophosphate ion (Keggin structure). 
  Reference    Z. Naturforsch. 34b, 412—422 (1979); eingegangen am 28. November 1978 
  Published    1979 
  Keywords    Properties, X-ray, Heptatungstate, Paratungstate A, Metatungstate 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0412.pdf 
 Identifier    ZNB-1979-34b-0412 
 Volume    34 
40Author    M. Schweizer, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Verbindungsbildung von MeO : M203, Teil III Zur Kenntnis von BeGa204 Compound Formation Me0:M203, Part III BeGa2C>4  
 Abstract    A new compound, BeGa204, was prepared by high temperature reaction between BeO and Ga203. X-ray single crystal investigations show a hitherto unknown structure type of M2+M23+04 compounds. BeGa204 crystallizes with hexagonal symmetry a = 775.0 and c = 298.0 pm, space group C£h-P63/m. Be 2+ and Ga 3+ are statistically distributed and are surrounded by 0 2--tetrahedra. 
  Reference    Z. Naturforsch. 34b, 1067—1069 (1979); eingegangen am 10. Mai 1979 
  Published    1979 
  Keywords    Beryllium, Gallium, Oxide, X-ray, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1067.pdf 
 Identifier    ZNB-1979-34b-1067 
 Volume    34 
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