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1997[X]
1Author    Bruno Merk, M. Arkus, Fath, Hans Pritzkow, H. Ans, Peter LatschaRequires cookie*
 Title    Synthese und Untersuchung neuer lA 5,4A5-Diphosphapentalen-und 1A5,4A5-sowie lA 5,5A5-Diphosphaazulen-Systeme Synthesis o f New 1 A5,4A5-D iphosphapentalene-and 1 A5,5A3-D iphosphaazulene System s  
  Reference    (Z. Naturforsch. 52b, 1—8 [1997]; eingegangen am 30. Juli 1996) 
  Published    1997 
  Keywords    1 A5, 4A:'-Diphosphapentalene, 1 A5, 4A:i-Diphosphaazulene, Criss-Cross-Cycloaddition 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0001.pdf 
 Identifier    ZNB-1997-52b-0001 
 Volume    52 
2Author    Z. NaturforschRequires cookie*
 Title    Synthese und Reaktivität von 7-Triphenylstannyl-a-am inobuttersäure- derivaten  
 Abstract    Ph3SnCH2CH 2C H (NHCOOCH 2P h)COOCH3 (1) is synthesized by hydrostannation of methyl N-(benzyloxycarbonyl)vinylglycinate with Ph3SnH. The reaction o f 1 with HC1 in CH 3OH and with bromine in CHC13 yields the halostannylsubstituted compounds Ph3_"X,?SnCH2CH 2C H(NHCOOCH 2Ph)C OOCH3 (2 -4) (n = 1, 2; X = Cl, Br). By sapo­ nification with one equivalent of NaOH and subsequent acidification with HCl 1 is transformed into the free acid Ph3SnCH2C H 2C H(NHCOOCH2Ph)COOH (5) that undergoes cyclization into the 1,2-oxastanninane 6 with intramolecular elimination of benzene. IR, NMR data and the determination of the crystal structure of Ph2BrSnCH2CH2CH(NHCOOCH2Ph)COOCH3(3) reveal for 2 and 3 an intramolecular coordination of the N C (0)0-group at the tin atom to form a seven-membered ring. 
  Reference    (Z. Naturforsch. 52b, 9—16 [1997]; eingegangen am 20. August 1996) 
  Published    1997 
  Keywords    Triphenylstannyl Aminobutyric Acid Derivatives, Halostannyl Aminobutyric Acid Derivatives, IR Spectra, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0009.pdf 
 Identifier    ZNB-1997-52b-0009 
 Volume    52 
3Author    Henry Strasdeit, A. Ngelika Von, D. Öllen, A. Nne-K, D. Athrin, Uhm EaRequires cookie*
 Title    Coordination Chemistry of Lipoic Acid and Related Compounds, Part 1 Syntheses and Crystal Structures of the UV-and Light-Sensitive Lipoato Complexes [M(lip)2(H20 ) 2] (M = Zn, Cd)  
 Abstract    The rac-lipoato (lip-) complexes [Zn(lip)2(H 2 0)2] (1) and [Cd(lip)2(H2 0)2] (2) were ob­ tained in good yields from solutions of sodium lipoate and the respective metal nitrate in methanol/water. 1 and 2 form pale yellow, moderately light-sensitive crystals. Both compounds were structurally characterized by single-crystal X-ray diffraction. 1: C2/c, a = 39.958(6), b = 5.360(1), c = 10.794(1) Ä, ß = 95.76(1)°, Z = 4, wR2 = 0.150 (all data). 2: C2/c, a = 38.200(2), b = 5.472(1), c = 11.179(1) Ä, ß = 92.72(1)°, Z = 4, wR2 = 0.090 (all data). The metal ions are hexacoordinated by the oxygen atoms of two chelating carboxylate ligands and two aqua ligands. The crystal structures are very similar but not isotypic. They are layer structures, in which the complexes within a layer are interconnected by a network of hydrogen bonds. Adjacent layers have contacts via the 1,2-dithiolanyl rings of their lipoato ligands. Crystals of 1 and 2 decompose on exposure to visible light or ultraviolet radiation in the 2 8 0 -3 9 0 nm range. Photopolymerization by formation of intermolecular S-S bonds is very probably involved. Furthermore, the infrared spectra reveal the transformation of CO O -into COOH groups. 
  Reference    (Z. Naturforsch. 52b, 17—24 [1997]) 
  Published    1997 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0017.pdf 
 Identifier    ZNB-1997-52b-0017 
 Volume    52 
4Author    Thom As Leonhardt, H. Ans, Peter LatschaRequires cookie*
 Title    Photochemische Synthese neuer zinnorganischer Verbindungen mit "aktiven" Gruppen am Zinnatom (I) Photochem ical Synthesis o f New Tinorganic C om pounds with Active Substituents on Tin  
 Abstract    By photochemically induced oxidative addition reactions the synthesis of some new tinorganic compounds was achieved. The reaction of dichloro-and diiodotin with 1,2-diiodobenzene (1) induced by ultraviolet radiation led to bis-(1 -iodophenyl)diiodotin (2), bis-(1 -iodophenyl)dichlorotin (3), 1 -iodo-2-(trichlorotin)benzene (4) and 1 -iodo-2-(triiodotin)benzene (5). Iodosubstitution at the tin atom was also observed when dichlorotin was used as the starting compound. Analogous experiments with 1,2-dibromobenzene (6) and 1,2-dichloro-(7) gave no products. 
  Reference    (Z. Naturforsch. 52b, 25—29 [1997]; eingegangen am 9. November 1995) 
  Published    1997 
  Keywords    Photochemically Induced Oxydative Addition Reactions, Dihalogenostannylenes, Aromatic Tin Organyls 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0025.pdf 
 Identifier    ZNB-1997-52b-0025 
 Volume    52 
5Author    G. Alina, S. Z. Aitseva11 ', SergeyS K Arlova, ElenaS A Lekseyevaa, LeonidA A Slanova, EvgeniV A Vtom Onovb, JörgL. OrberthbRequires cookie*
 Title    -Allylgermatrane. Synthesis, Structure and Reaction with Diazomethane  
 Abstract    Reaction of allyltribromogermane (2), readily available from dibrom o(l,4-dioxane)ger-manium(II) (1) and allylbromide, with tris(2-tributylstannoxyethyl)-amine (4) gives 1-allylgermatrane (3) in almost quantitative yield. 3 crystallizes from /7-pentane as a colourless crystalline solid which was characterized by 'H and ,3C NMR spectroscopy and by an X-ray crystal structure study. The "atrane" skeleton shows a strong conformational disorder; the Ge-N distance of 2.208(3) A suggests the presence of a coordinative Ge-N bond. Treatment of 1 -allylgermatrane (3) with CH2N2 in the presence of catalytic amounts of Pd(OAc)2 affords 1-cyclopropylmethylgermatrane (5) in high yield. 
  Reference    (Z. Naturforsch. 52b, 30—34 [1997]; received August 16 1996) 
  Published    1997 
  Keywords    Germanium, Germatrane, Cyclopropanation, X-Ray, NMR Spectra 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0030.pdf 
 Identifier    ZNB-1997-52b-0030 
 Volume    52 
6Author    B. W. Edel, HkM. Üller-B, UschbaumRequires cookie*
 Title    Über die Kristallstrukturen der Tellurate Pb3Fe2Te20 12 und Pb2CoTe06  
 Abstract    Pb3Fe2Te20 |2 (I) and Pb2C oT e06 (II) have been prepared by crystallization from melts. Single crystal X-ray investigations led to monoclinic (I) and tetragonal (II) symmetry, space groups Cs-Cc and D{J-I4/mmm. Lattice constants I: a = 9.866(3), b = 15.332(4), c = 7.172(2) A, ß = 111.34(3)°, Z = 4. II: a = 5.661(5), c = 8.004(7) A, Z = 2. (I) represents a new crystal structure, characterized by a network of octahedra occupied by Fe + and Te6+ in a disordered manner. The centres of negative charge of the lone pairs of Pb2+ in I are estimated by Coulomb term calculations. II belongs to the elpasolithe type. 
  Reference    (Z. Naturforsch. 52b, 35—39 [1997]; eingegangen am 2. September 1996) 
  Published    1997 
  Keywords    Lead, Iron, Cobalt, Tellurium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0035.pdf 
 Identifier    ZNB-1997-52b-0035 
 Volume    52 
7Author    H. Erbert, Schum Ann, A.Lexander LentzRequires cookie*
 Title    Synthese von l-Butyl-2,3,4,5-tetraphenyl-2,4-cyclopentadien und seiner Natrium-, Thallium(I)-und Eisen(II)-Komplexe Synthesis o f l-B utyl-2,3,4,5-tetraphenyl-2,4-cyclopentadiene and its Sodium, Thallium (I) and Iron(II) C om plexes  
 Abstract    Butyl(tetraphenyl)cyclopentadiene, [Butyl(tetraphenyl)cyclopentadienyl] sodium, [Butyl(tetraphenyl)cyclopentadienyl] thallium(I), Dibutyl(octaphenyl)ferrocene l-Butyl-2,3,4,5-tetraphenyl-2,4-cyclopentadiene (3) is prepared starting from 2,3,4,5-tetra-phenylcyclopentadien-l-one which forms 1-butyl-1-hydroxy-2,3,4,5-tetraphenylcyclopenta-diene (1) by reaction with BuLi followed by acid hydrolysis. 1 and HBr give 1-bromo-l-butyl-2,3,4,5-tetraphenylcyclopentadiene (2), which in its turn reacts with BuLi and H20 /H + to yield 3. Treatment of 3 with N aN H 2, TIOEt or FeCL yields Na[C5Ph4Bu] (4), Tl[CsPh4Bu] (5) and the corresponding ferrocene Fe[C5Ph4Bu]2 (6), respectively. The 'H and l?C NMR spectra of the new compounds are reported and discussed. 
  Reference    (Z. Naturforsch. 52b, 40—44 [1997]; eingegangen am 14. September 1996) 
  Published    1997 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0040.pdf 
 Identifier    ZNB-1997-52b-0040 
 Volume    52 
8Author    H. Erbert, Schum Ann, A.Lexander LentzRequires cookie*
 Title    .4-Bis(4-acylphen-1 -yl)  
 Abstract    -1,3-cy clopentadiene und 1.2.3.4-Tetra(4-alkylphen-l-yI)-1,3-cyclopentadiene und deren Natrium-, Thallium(I)-und Eisen(II)-Komplexe 1.4-B is(4-acylphen-1 -y l)-1,3-cyclopentadienes and 1,2,3,4-Tetra(4-alkylphen-l-yl)-1,3-cyclopentadienes and their Sodium , T hallium (I) and Iron(II) C om plexes 1,4-D iphenyl-1,3-cyclopentadiene reacts with acyl chlorides RC(0)C1 (R = CH 3 (a), C5H m (c)) to form the corresponding l,4-bis(4-acylphen-l-yl)-l,3-cyclopentadienes C5H4(C6H4C (0)R)2 (la , lc), which upon treatment with NaNH2 or with T10C2H5 af­ ford the corresponding sodium complexes Na[C5H3(C6H4C (0)R)2] (2a, 2c) or thallium(I) derivatives T1[C5H3(C6H4C (0)R)7] (3a, 3c). The reaction of l,l',3,3'-tetraphenylferrocene with CH 3C (0)C1 results in the formation of Fe[C5H ,{ C (0)C H 3}{(C 6H4C (0)C H 3)2}]-[C5H 3{(C 6H4C (0)C H 3)2}] (5), whereas 2c and FeCl2 give Fe[C5H3(C6H4C(0)C5H M)2]2 (4c). The all-para-acylated tetraphenylcyclopentadienes C5H 2(C6H4C (0)R)4 (R = CH3 (a), C3H7 (b)) react with K[N2H4OH] to produce the ligands C5H2(C6H4CH 2R)4 (6 a, 6 b), which undergo reactions with NaNH2 and T10C2H3 to yield the sodium and thallium(I) salts, Na[C5H2(C6H4C H 2R)4] (7a, 7b) and T1[C5H2(C6H4CH2R)4] (8 a, 8 b), respectively. 7a and 7b react with FeCl2 to produce the corresponding ferrocenes Fe[C5H(C6H4CH2R)4]2 (9a, 9b). The 1H and l3C NMR spectra of the new compounds are reported and discussed. 
  Reference    (Z. Naturforsch. 52b, 45—52 [1997]; eingegangen am 29. November 1996) 
  Published    1997 
  Keywords    Diphenylcyclopentadiene, Tetraphenylcyclopentadiene, Cyclopentadienyl Sodium Complexes, Cyclopentadienyl Thallium(I) Complexes, Tetraphenylferrocene Derivatives 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0045.pdf 
 Identifier    ZNB-1997-52b-0045 
 Volume    52 
9Author    W. Olfgang Schneider, A.Lexander Sladek, A.Ndreas Bauer, Klaus Angermaier, H. Ubert, Schm IdbaurRequires cookie*
 Title    Structural Investigation of Bis(isonitrile)gold(I) Complexes  
 Abstract    The reaction of (MeNC)-, (PhNC)-and (MesNC)AuCl in tetrahydrofuran with an equimolar amount of the corresponding isonitrile ligand and one equivalent of Ag+X~ (X -= BF^ or CF3S O J) leads to the formation of the bis(isonitrile)gold(I) complexes (MeNC)aAu+ CFiSO ^ (1), (PhNC)2Au+ BF^ (2) and (M esNC)2Au+ BF^ (3). The crystal structures of 1, 2 and 3 have been determined. In compound 1 there are rod-like cations with a parallel packing into meandering puckered layers, in which the gold atoms have alternating A u-A u contacts of 3.611 and 3.624 A. In complex 2 the cations form long double-paddles, with the two paddles at an angle of 11.5°. The individual cations are well separated and have no sub-van-der-Waals A u-A u contacts. The crystal structure of 3 is similar, but with a smaller dihedral angle between the planes of the two mesityl rings (56.0°). 
  Reference    (Z. Naturforsch. 52b, 53—56 [1997]; received September 18 1996) 
  Published    1997 
  Keywords    Gold(I) Complexes, Isonitrile Complexes, Crystal Structure, Supramolecular Chemistry 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0053.pdf 
 Identifier    ZNB-1997-52b-0053 
 Volume    52 
10Author    T. Schaper, W. PreetzRequires cookie*
 Title    Darstellung und spektroskopische Charakterisierung  
 Abstract    von (773-Hexahydro-c/os0-hexaborato)phenylquecksilber(l-) [Hg(?73-B6H6)Ph] sowie Kristallstruktur von [PPh4][Hg(r73-B6H6)Ph] Preparation and Spectroscopic Characterization of (/73-H exahydro-c/os0-hexaborato)phenylm ercury(1 -) [Hg(/y3-B6H 6)Ph]-and Crystal Structure o f [PPh4][H g(/73-B6H6)Ph] (?/,-Hexahydro-c/o5 o-hexaborato)phenylm ercury(l-),Crystal Structure, n B NMR By reaction of [B6H7]_ with PhHg(CH3COO) in dichloromethane [Hg(//'-Bf,H6)Ph]~ is formed. The crystal structure of [PPh4 ][Hg(/?3-B6H6)Ph] has been determined by single crystal X-ray diffraction analysis; monoclinic space group P 2,/c with a = 9.567(5) A, b = 22.213(5) Ä, c = 14.296(5) Ä, ß = 94.484(5)°. The 11B NMR spectrum exhibits a doublet at -9.9 ppm shifted to lower field as compared with [B6H7]~ and the lwHg NMR spectrum a singlet at -74.5 ppm. In the IR and Raman spectra characteristic B-H vibrations are observed. 
  Reference    (Z. Naturforsch. 52b, 57—60 [1997]; eingegangen am 12. August 1996) 
  Published    1997 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0057.pdf 
 Identifier    ZNB-1997-52b-0057 
 Volume    52 
11Author    Stefan Sawusch, Uwe Schilde, Erhard UhlemannRequires cookie*
 Title    Ligandenaustauschreaktionen  
 Abstract    von ReCl4(PPh3)2 mit Salicylaldehyd-2-hydroxy(mercapto)anil. Struktur von Bis[salicylaldehyd-2-hydroxyanilato(2-)]rhenium(IV) Ligand Exchange Reactions of ReCl4(PPh3)2 with Salicylaldehyde-2-hydroxy(mercapto)anil. Molecular Structure of Bis[salicylaldehyde-2-hydroxyanilato(2-)]rhenium(IV)-hydroxyanilato(2-)]rhenium(IV) Ligand exchange reactions of tetrachloro-bis(triphenylphosphane)rhenium(IV) with sali-cylaldehyde-2-hydroxy(mercapto)anil were studied. The reaction products were characterized by mass spectroscopy. The crystal structure was determined by X-ray analysis for bisfsali-cylaldehyd-2-hydroxyanilato(2-)]rhenium(IV). Crystal data: a = 1987.1(18); b = 829.0(6), c -1296.9(7) pm, ß = 100.02(7) ; space group C 
  Reference    (Z. Naturforsch. 52b, 61—64 [1997]; eingegangen am 17. Juni 1996) 
  Published    1997 
  Keywords    Rhenium(IV) Chelates, Tridentate Diacidic Ligands, Crystal Structure, Bis[salicylaldehyde-2 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0061.pdf 
 Identifier    ZNB-1997-52b-0061 
 Volume    52 
12Author    Atthias Lemke, Falk Knoch, Horst KischRequires cookie*
 Title     
 Abstract    The dication of tetrakis(dimethylamino)ethene (TDAE2+) forms ion pair complexes with [M(mnt)2]2~, mnt2-= maleonitrile-2,3-dithiolate, M(II) = Ni, Pd, Pt, and Zn. According to X-ray analysis the structure of {TDAE2+[Pt(mnt)2]2~ } consists of a chain-like arrangement o f planar dianions and twisted (71°) dications. Shortest interionic contacts are 11 pm longer than the corresponding van der Waals radii. In the UV-VIS diffuse reflectance spectra of the complexes with a d8 central metal there is no unambiguous evidence for the presence of an ion pair CT band. This band is observed, however, at 450 nm when the d 10 metal Zn(II) is present. Application of the Hush-Marcus model affords a reorganization energy of 110 kJ / mol for electron transfer from [Zn(mnt)2]2-to TDAE2+. This value is 40 kJ / mol higher than the one reported for the analogous complex wherein TDAE2+ is replaced by a 2,2'-bipyridinium acceptor of similar reduction potential. 
  Reference    (Z. Naturforsch. 52b, 65—68 [1997]; received April 1 1996) 
  Published    1997 
  Keywords    Ion Pair Charge-Transfer, Optical Electron Transfer, X-ray 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0065.pdf 
 Identifier    ZNB-1997-52b-0065 
 Volume    52 
13Author    Christian Meyer3, Dietrich Mootza, Birgit Bäckb, Rolf MinkwitzbRequires cookie*
 Title    Bis(trifluormethyl)disulfan und -trisulfan: Molekülgeometrie im festen Zustand [1] Bis(trifluoromethyl)disulfane and Trisulfane: Molecular Geometry in the Solid State [1]  
 Abstract    The solid-state structures of the low-melting compounds bis(trifluoromethyl)disulfane (CF3SSCF3, triclinic, space group P I, Z = 2) and bis(trifluoromethyl)trisulfane (CF3SSSCF3, monoclinic, space group C2/c, Z = 4) have been determined on single crystals with M oK a radiation at -160°C. The trisulfane has trans conformation. The geometry of both molecules agrees well with results of electron diffraction on the gaseous state. A comparison is made also with the crystal structures of the related molecules CF3TeTeCF3 and CF3OOOCF3. 
  Reference    (Z. Naturforsch. 52b, 69—71 [1997]; eingegangen am 15. Juli 1996) 
  Published    1997 
  Keywords    Conformation, Crystal Structure, Sulfane 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0069.pdf 
 Identifier    ZNB-1997-52b-0069 
 Volume    52 
14Author    H. Möhrle, M. JeandréeRequires cookie*
 Title    ,3-Dioxolane von N-substituierten 4-Piperidonen als Dehydrierungssubstrat 1,3-Dioxolanes of N-Substituted 4-Piperidones as Substrates for Dehydrogenations  
 Abstract    The applicability of ketals was examined for masking the carbonyl group in N-tertiary 4-piperidones during the dehydrogenation using mercury-edta. Various 1,3-dioxolanes showed a different behaviour in dependence on the N-substituent. With simple aliphatic moieties mainly dehydrogenated but hydrolyzed products were received. These enaminones were also available from the dehydrogenations of the corresponding 4-piperidones. Similar applied to para-acyl-aromatic substituted derivatives but with less yields. Aromatic substituents bearing a neighbour group on ortho-position with participation gave rise to different oxidation products partially with preservation of the ketal structure. 
  Reference    (Z. Naturforsch. 52b, 72—78 [1997]; eingegangen am 23. August 1996) 
  Published    1997 
  Keywords    Ketals, Enaminones, N, 0-A cetals, Lactams, Dehydrogenation with Hg-EDTA Complex 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0072.pdf 
 Identifier    ZNB-1997-52b-0072 
 Volume    52 
15Author    Ralf Steudel, Monika Kustos, Andreas PrenzelRequires cookie*
 Title     
 Abstract    y n t h e s is a n d S t r u c t u r e o f B i s [ d i(m e t h y lc y c lo p e n t a d ie n y l) c h lo r o -t it a n iu m ] t r is u lf id e [ (C p 2 C lT i)2S 3 ] -a R e a g e n t fo r T r is u lf id e L ig a n d T r a n s f e r R e a c t io n s [1] The dinuclear metallacycle of [Cp2Ti(/z-S2)2TiCp2] reacts with phosgene or thiophosgene to give [(CP2CITO2S3] which has been characterized by 1H and l3C NMR spectra as well as by an X-ray structure analysis. The trisulfido complex contains a helical TiSSSTi unit and may serve as an S3 transfer reagent in reactions with SCl-functional compounds. 
  Reference    (Z. Naturforsch. 52b, 79—82 [1997]; received June 18 1996) 
  Published    1997 
  Keywords    Titanocene Complexes, Polysulfide Ligands, Structure, NMR Spectra 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0079.pdf 
 Identifier    ZNB-1997-52b-0079 
 Volume    52 
16Author    OctahedraC. Wadewitz, Hk Müller-BuschbaumRequires cookie*
 Title    Ba  
 Abstract    (V0)4(As0 4)2(As20 7): Ein neues Divanadyl(IV)-Arsenat mit flächenverknüpften V20 8+1-Oktaederdoppeln Ba(V0)4(As0 4)2(As20 7): A New Divanadyl(IV)-Arsenate Containing Face Shared V20 8+, Double A new alkaline earth vanadyl arsenate Ba(V0)4(As0 4)2(As2 0 7) has been synthesized by solid state reactions in closed quartz tubes. X-ray investigations led to orthorhombic symmetry, space group D2£-Pnma, a = 17.540(2), b = 7.6223(8), c = 11.0633(12) A, Z = 4. The crystal structure is characterized by A s 0 4 single and As20 7 double tetrahedra and face shared asymmetric stretched V20 8+, double octahedra, forming a network of polyhedra. The incorporated Ba2+ ions show 12-fold coordination by oxygen. Ba(V 0)4(A s0 4)2(As20 7) is the first vanadyl compound containing V20 8 divanadyl groups originating from face sharing stretched V 0 5+l octahedra. 
  Reference    (Z. Naturforsch. 52b, 83—87 [1997]; eingegangen am 21. August 1996) 
  Published    1997 
  Keywords    Barium, Vanadyl Arsenate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0083.pdf 
 Identifier    ZNB-1997-52b-0083 
 Volume    52 
17Author    Rolf Minkwitz, Petra Garzarek, Hans PreutRequires cookie*
 Title    Uber die Darstellung von CH3C6H4S(0)2NCl2H+SbF6' und die Kristallstruktur von CH3C6H4S (0 )2NCl2  
 Abstract    Dichloroamine T. Crystal Structure, Reaction in Superacid Media The crystal structure of CH 3C6H4S (0)tN C F is reported. Crystals are monoclinic, space group P2,/c, with a = 710.0(7), b = 1615.3(13), c = 867.2(7) pm, V = 988(2) pm3 and Z = 4. The reaction with HF/SbFs yields CH3C6H4S(0)2NCl2H+SbF6~ the first protonated dichloroamine salt, its vibrational -and NMR spectra are discussed. 
  Reference    (Z. Naturforsch. 52b, 88—94 [1997]; eingegangen am 30. Juli 1996) 
  Published    1997 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0088.pdf 
 Identifier    ZNB-1997-52b-0088 
 Volume    52 
18Author    Bis, Burkhard Jirjahn, Henry Hildebrandt, Gert HellerRequires cookie*
 Title    Bis-und Tris[^-nitrido-bis(diorganyIphoshinato-0,0')]- element( 1+)-Kationen  
 Abstract    -and Tris[/u-nitrido-bis(diorganylphosphinato-0,0')]-element(l+) Cations Bis[^-nitrido-bis(diorganylphosphinato-0,0')]boronium (1 +) Triiodides, Tris[/i-nitrido-bis(di-phenylphosphinato-0,0')]alum inium (1 +) Triiodide, Tris[/i-nitrido-bis(diphenylphosphinato-0 , 0 ')]stannium(l+) Perchlorates, Crystal Structure. The following compounds have been prepared and characterized by crystal structure analyses: Two modifications of bis[^-nitrido-bis(diphenylphosphinato-0,0')]boronium (l+) triiodide (A and B): A (monoclinic, P2,/c; a = 1908.8, b = 1652.7, and c = 1719.4 pm; ß = 109.54°; Z = 4; = 10.3%) and B (triclinic, P i, a = 981.8, b = 1148.9, and c = 2353.7 pm; a = 80,91°, ß = 81.09°, 7 = 74.58°, Z = 2, wR = 7.4%). Tris[/i-nitrido-bis(diphenylphosphinato-0,0')]alum inium (1 +) triiodide (C) and tris[//-imido-bis(diphenylphosphinato-0,0')]alum inium (l+)bis(hydrogenphosphate) dioxane adduct (D): C (monoclinic, P2xln ,a = 1332.4, b = 4087.6, a n d c = 1368.1 pm; ß = 93.17°; Z = 4; R = 10.4%) and D (orthorhombic, Pc2\b, a = 1798.7, £> = 2151.1, and c = 1948.7 pm; Z = 4; R = 12,8%). Two modifications of tris[/i-nitrido-bis(diphenylphosphinato-0,0')]stannium (l+) perchlora­ te (E and F): E (triclinic, P i, a = 1468.7, b = 1480.2, and c = 1629.8 pm; a = 99.75°, ß = 90.77°, and 7 = 92,65°, Z = 2, wR = 6,0%) and F (hexagonal, a = 1224 and c = 2110 pm). Bis[/i-nitrido-bis(diethylphosphinato-0,0')]boronium (l+) triiodide has been characterized by IR, FIR, 'H -and 31P NMR, as well as by mass spectra. 
  Reference    (Z. Naturforsch. 52b, 95—101 [1997]; eingegangen am 3. Juni 1996) 
  Published    1997 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0095.pdf 
 Identifier    ZNB-1997-52b-0095 
 Volume    52 
19Author    K. Bluhm, C. H. ParkRequires cookie*
 Title    Die Synthese und Kristallstruktur des Borat-Phosphats: a -Zn3(B0 3)(P04) Synthesis and Crystal Structure of the Borate-Phosphate: Q-Zn3(B 0 3)( P 0 4)  
 Abstract    Single crystals of the compound a -Z n 3(B 0 3)(P 0 4) were obtained at 1050 °C by using B20 3, P20 5 and Z n C 0 3 as starting materials and subsequent cooling to 600°C with 20°C/h. X-ray investigations on single crystals yield a new crystal structure in the monoclinic space group Cm -(Nr. 8) with a = 972.5(2); b = 1272.0(3); c = 487.4(3) pm; 0 = 1 1 9 .8 0 (4)°; Z = 4. The structure contains isolated trigonally planar B 0 3 and tetrahedral P 0 4 units which are not joined together. Zinc occupies three crystallographically different point positions and is trigonal-bipyramidally, tetragonal-pyramidally or distorted tetrahedrally coordinated by oxygen. 
  Reference    (Z. Naturforsch. 52b, 102—106 [1997]; eingegangen am 16. August 1996) 
  Published    1997 
  Keywords    Zinc, Borate, Phosphate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0102.pdf 
 Identifier    ZNB-1997-52b-0102 
 Volume    52 
20Author    GerhardG. Habermehl3 ', HansChr Krebs3, Peter Nemesb, Gabor Nagyc, Pal ScheiberbRequires cookie*
 Title    Occurrence of Toxin Producing Cyanobacteria in Hungary. Isolation, Separation and Identification of Microcystins  
 Abstract    Cyanobacteria (blue-green algae), Microcystis aeruginosa sp., were isolated from a massive bloom in a eutrophic waterbody in Hungary. Their toxic effect, determined by a mouse test, was associated with the occurrence of microcystins YR and LR which were isolated, separated by means of HPLC procedures and identified by mass spectroscopy. The toxin content of the dry cell material is about 0.22 %, indicating a pronounced toxin-producing ability of the species investigated. 
  Reference    (Z. Naturforsch. 52b, 107—109 [1997]; received October 18 1996) 
  Published    1997 
  Keywords    Microcystis aeruginosa, Cyanobacteria, Microcystins, Lake Velence 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0107.pdf 
 Identifier    ZNB-1997-52b-0107 
 Volume    52 
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