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2001[X]
21Author    Norbert Kuhn, Manfred Steimann, Michael WalkerRequires cookie*
 Title    Acylation o f 2,3-Dihydro-l,3-diisopropyl-4,5-dim ethylim idazol-2-ylidene [ l ]  
 Abstract    Acylation, Heterocycles, Imidazoles 2,3-Dihydro-l,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (2, Im) reacts with PhC(0)X to give the imidazolium salts [PhC(0)Im]F (3) and [PhC(0)Im]Cl (5). From 3 and the corre­ sponding fluoro compounds, the salts [PhC(0)Im][BF4] (4a), [PhC(0)Im][Ph3SiF2] (4b) and [PhC(0)Im] [Ph3SnF2] (4c) are obtained. 2 reacts with oxalylic chloride under CO elimination to give the salt [Im2CO]Cl2 (7). The X-ray data of 4c and 7 • 4 H20 • 2 HC1 ([Im2CO][Cl4H 10O4]) are reported. 
  Reference    (Z. Naturforsch. 56b, 129—136 [2001]; eingegangen am 5. Dezember 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0129.pdf 
 Identifier    ZNB-2001-56b-0129 
 Volume    56 
22Author    PavelL. Shutovb, SergeyS. Karlov3, Jörg Lorberthb, GalinaS. Zaitseva3Requires cookie*
 Title    Syntheses and Characterization of 1-Haloazagermatranes  
 Abstract    Germanium, Azagermatranes The reaction of tris(dimethylamino)halogermanes, (Me?N)3GeHal (7, Hal = Cl; 8 , Hal = Br), with tris(2-aminoethyl)amines, N(CH2CH2NHR)3 (5, R = H; 6 , R = Me), yield l-halo-N,N',N"-azagermatranes (1, X = Cl, R = H; 2, X = Br, R = H; 3, X = Cl, R = Me; 4, X = Br, R = Me). Treatment of 4 with n-butyllithium affords l-n-butyl-N,N',N"-trimethylazagermatrane (14) in high yield. Reactions of n-BuLi with 7 or (Me2N)4Ge (13) lead to the formation of (Me2N)3Ge-n-Bu (15). On treatment of 15 with 5 the 1 -n-butylazagermatrane 16 was obtained. The molecular composition and the structures of all new compounds were established by elemental analyses, 'H and 13C NMR spectroscopy and mass spectrometry. 
  Reference    Z. Naturforsch. 56b, 137—140 (2001); received November 13 2000 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0137.pdf 
 Identifier    ZNB-2001-56b-0137 
 Volume    56 
23Author    O. P. Pandey3, S. K. Sengupta3, B. P. Baranwal3, SarojK. Shuklab, Alpana Bhatt3Requires cookie*
 Title    Mono-and Bis(cyclopentadienyl)hafnium(IV) Derivatives with Higher Fatty Acids  
 Abstract    The reactions o f Cp2HfCh with som e higher monocarboxylic acids having straight chains, caprylic (C8H16O2), lauric (C12H24O2), myristic (C14H28O2), palmitic (C16H32O2), stearic (C18H36O2), and behenic (C22H44O2) acid, have been studied in anhydrous tetrahydrofuran in 1:1 and 1:2 molar ratios, respectively. The reaction products isolated, o f types Cp2Hf(L)Cl, CpHf(L)2Cl (LH represents different carboxylic acids), have been characterised by conductivity and magnetic susceptibility measurements and spectral (infrared, electronic, *H NMR and 13C NMR) data. The bonding o f the carboxylato ligand in these complexes has been discussed and plausible structures have been established. 
  Reference    Z. Naturforsch. 56b, 141—145 (2001); received April 28 2000 
  Published    2001 
  Keywords    Cyclopentadienyl, Hafnium(IV), Fatty Acids 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0141.pdf 
 Identifier    ZNB-2001-56b-0141 
 Volume    56 
24Author    Gemot Heckmann3, Gerd Becker3, Stephen Homer3, Herbert Richard3, Hans Kraft3, Peter DvortsakbRequires cookie*
 Title    Remarkably Large 15N, 13C and 180 Isotope NMR Shifts of the Mono-coordinate Phosphorus Atoms in the Compounds (Me3 SiyPrNCP, K+[*PrNCP]-and KOCP * 2 DME (DME = 1,2-Dimethoxyethane)  
  Reference    Z. Naturforsch. 56b, 146 (2001) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0146.pdf 
 Identifier    ZNB-2001-56b-0146 
 Volume    56 
25Author    Hans Bock, Sven HollRequires cookie*
 Title    Wechselwirkungen in Molekülkristallen, 168 [1,2]. cr-Donator/Akzeptor-Komplexe {HCl3 ***Xe }(X0 = Cl, Bre , Ie ) von Triiodmethan in Tetraphenylphosphoniumhalogeniden Interaction in Molecular Crystals, 168 [1, 2]. cr-Donor/Acceptor Complexes {HCI3 -X "} (X = Cle , Bre , I9 ) of Triiodomethane in Tetraphenylphosphonium Halides  
 Abstract    Triiodomethane Adducts, Tetraphenylphosphonium Halides, cr-Donor/Acceptor and Phenyl/Phenyl Interactions Three donor/acceptor complexes between halide anion donors and the triiodomethane accep­ tor with tetraphenylphosphonium countercations, {(H5C6)4P0 X e " I 3CH)} (X" = C F , Br", I) could be crystallized and their structures determined at low temperature. Their crystal packing motifs are donor/acceptor layers of halide anion/triiodomethane patterns and phe­ nyl/phenyl interacting tetraphenylphosphonium cation chains. Structure comparison and dis­ cussion are based on literature-known analogous adducts with organoammonium salts as well as the phenyl/phenyl interactions in the numerous tetraphenylphosphonium salts registered in the Cambridge Structural Database. The results add novel facets to the selforganization phenomena observed on crystallization of halogen compounds and halide salts. 
  Reference    Z. Naturforsch. 56b, 152—163 (2001); eingegangen am 9. August 2000 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0152.pdf 
 Identifier    ZNB-2001-56b-0152 
 Volume    56 
26Author    S. Bzika, M. Jansenb, Sonderdruckanforderungen An, ProfM. Dr, JansenRequires cookie*
 Title    Darstellung und Charakterisierung von Bis(trichlorsilyl)phenylamin und 2,2,4,4-TetrachIor-1,3-diphenyl-[ 1,3,2,4]diazadisiletidin Preparation and Characterization of Bis(trichlorosilyl)phenylamine and 2,2,4,4-Tetrachloro-1,3-diphenyl-[ 1,3,2,4]diazadisiletidine  
 Abstract    Cross Linking, Silazanes Bis(trichlorsilyl)phenylamine (1) and 2,2,4,4-tetrachlor-l,3-diphenyl-[l,3,2,4]diazadisiletid-ine (2) have been synthesized as potential precursors for the preparation of porous oxygen-free solids by the reaction of tetrachlorosilane with dilithiated aniline. Both compounds were characterized by crystal structure analysis. 1 crystallizes monoclinically, P2/n, a = 10.124(2), b = 12.701(2), c = 11.425(3) A, ß = 109.34(2)° and Z = 4 (/?, = 4.6%, wR2 = 11.6%, 1297 independent reflections). 2 crystallizes orthorhombically, Pbca, a = 11.42(1), b = 8.17(1), c = 17.05(1) Ä, and Z = 4 (Rx = 3.7%, wR2 = 8.2%, 1923 independent reflections). Ammonolyses and polycondensation of 1 and 2 yield amorphous solids with low porosities. 
  Reference    Z. Naturforsch. 56b, 164—168 (2001); eingegangen am 8. November 2000 
  Published    2001 
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 Identifier    ZNB-2001-56b-0164 
 Volume    56 
27Author    Requires cookie*
 Title    Rubidium-und Caesium  
 Abstract    -Oxoantimonate(V) mit Kanalstrukturen. Synthesen, Kristallstrukturen und Schwingungsspektren R ubidium and C aesium O xoantim onates(V) w ith C hannel Structures. Syntheses, Crystal S tructures and V ibrational S pectra 
  Reference    Z. Naturforsch. 56b, 169 (2001) 
  Published    2001 
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 Identifier    ZNB-2001-56b-0169 
 Volume    56 
28Author    Requires cookie*
 Title    Synthese und Charakterisierung von cis-und fraws-Dicyclohexyl-3,3',4,4'- tetracarbonsäuren und ihren Dianhydriden  
  Reference    Z. Naturforsch. 56b, 179 (2001) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0179.pdf 
 Identifier    ZNB-2001-56b-0179 
 Volume    56 
29Author    Requires cookie*
 Title    Darstellung und Strukturelle Charakterisierung von cis-und trans- Dicyclohexyl-3,3'A4'-tetracarbonsäure-tetramethylestern  
  Reference    Z. Naturforsch. 56b, 189 (2001) 
  Published    2001 
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 Identifier    ZNB-2001-56b-0189 
 Volume    56 
30Author    Requires cookie*
 Title    Spectro-Electrochemistry of Diethyldithiocarbamate Complexes of Ni(II), Pd(II) and Pt(II)  
  Reference    Z. Naturforsch. 56b, 202 (2001) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0202.pdf 
 Identifier    ZNB-2001-56b-0202 
 Volume    56 
31Author    A. Nja-V, M. Erena, M. Udring, Artin JansenRequires cookie*
 Title    Darstellung und Kristallstruktur von Cs6Cl40 P rep aratio n and Crystal S tructure of Cs6Cl40  
 Abstract    The solid state synthesis and the crystal struc­ ture of Cs6Cl40 (Pearson-code hR22, R3c, a = 1324.7(6), c -1658(1) pm, Z -6, 931 reflections with I0 > 2a(I), R\ = 0.040, wR2 = 0.114) are repor­ ted. The compound crystallises isotypically with Rb6Cl40 in the anti-K4CdCl6 type of structure. The structure consists of infinite chains of alterna­ ting face-sharing OCs6 octahedra and ClCs6 trigo­ nal prisms which are separated by chloride anions. The underlying structural concept and the ana­ logy to perovskites are outlined. 
  Reference    Z. Naturforsch. 56b, 209—212 (2001); eingegangen am 2.November 2000 
  Published    2001 
  Keywords    Cesium, Halide, Solid State Synthesis 
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 Identifier    ZNB-2001-56b-0209_n 
 Volume    56 
32Author    G. C. Papavassiliou, G. A. Mousdis, I. B. KoutselasRequires cookie*
 Title    Preparation and Characterization of 4-[4-(Dimethylamino)styryl]-l-methyl- pyridinium Lead Triiodide and its Tribromide Analog  
 Abstract    Using 4-[4-(dimethylamino)styryl]-l-methyl-pyridinium iodide, lead iodide, tetrabutylammon-ium bromide and lead bromide as starting materi­ als, the title compounds were prepared and characterized analytically and spectroscopically. 
  Reference    Z. Naturforsch. 56b, 213—214 (2001); received November 21 2000 
  Published    2001 
  Keywords    Organic-Inorganic Hybrids, Low-Dimensional Semiconductors, Optical Properties 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0213_n.pdf 
 Identifier    ZNB-2001-56b-0213_n 
 Volume    56 
33Author    R. Aija, O. Ilu, K. An Iem, R. Isto, S. L. Aitin En, M. Arkku, A. Hlgré NbRequires cookie*
 Title    The Crystal and Molecular Structure of (//-Oxo)bis{chloro(methyl)thienyI- tellurium(IV)}  
 Abstract    Methyl Thienyl Telluride, Tellurium(IV) The formation and the crystal and molecular structure of (//-oxo)bis{chloro(methyl)thienyl-tellurium(IV)}, [Me(Th)TeCl]20 , are described. The compound is orthorhombic, space group Pbcn, a = 1893.30(2), b = 891.96(2), c = 966.24(5) pm; Z -4. The tellurium atom shows trigonal bi-pyramidal coordination with chlorine and the bridging oxygen atoms in axial, and methyl and thienyl groups in equatorial positions. The two close intermolecular Te(l) —Cl(l) contacts ex­ pand the coordination sphere around tellurium to an almost regular octahedron. 
  Reference    Z. Naturforsch. 56b, 215—217 (2001); received October 26 2000 
  Published    2001 
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 Identifier    ZNB-2001-56b-0215_n 
 Volume    56 
34Author    Requires cookie*
 Title    Synthesis and Structural Characterization of Metal Complexes of 2-Formylpyrrole 4jV-Methylthiosemicarbazone (4MLx) and 2-Acetyl- pyrrole 47V-Methylthiosemicarbazone (4ML2). The X-Ray Crystal Structures of [Ni(4ML!-H)2], [Pd(4ML!-H)2] and [Cd(4ML2)2I2]  
  Reference    Z. Naturforsch. 56b, 219 (2001) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0219.pdf 
 Identifier    ZNB-2001-56b-0219 
 Volume    56 
35Author    Elena Labisbal3, Alfonso Castiñeiras3, ChristineA. Brownb, DouglasX. WestbRequires cookie*
 Title    Structural Study of a Binuclear Zinc Complex of 2,6-Diacetylpyridine Bis{N(4)-dimethylthiosemicarbazone}, [Zn(2,6Ac4DM)]2 * MeCN  
 Abstract    Zinc, 2,6-Diacetylpyridine Bis{N(4)-dimethylthiosemicarbazone}, Electrochemical Synthesis Zinc metal was oxidized in the presence of 2,6-diacetylpyridine bis{N(4)-dimethylthiosemi-carbazone} (2 ,6 H2Ac4DM) in an acetonitrile solution, to produce a complex of the formula [Zn(2 ,6 Ac4 DM)]2-CH3CN. One of the zinc atoms is distorted octahedrally 6-coordinate and the coordination involves both pyridyl nitrogen atoms of the two ligands, the imine nitrogen atom and the thiolato sulfur atom of one thiosemicarbazone moiety of each ligand. The other zinc center is distorted tetrahedrally 4-coordinate with NS coordination of the two remaining thiosemicarbazone moieties. The complex crystallizes in the monoclinic space group C2/c with a = 14.952(2), b = 17.656(3), c = 15.553(4) A, ß = 111.456(16)°, V= 3821.5(13) A andZ = 4. 
  Reference    Z. Naturforsch. 56b, 229—232 (2001); received December 4 2000 
  Published    2001 
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 Identifier    ZNB-2001-56b-0229 
 Volume    56 
36Author    C. A. Diopa, L. Diopa, U. Russob, A. Sánchez-Díazc, A. CastiñeirascRequires cookie*
 Title    Synthesis, Spectroscopic Characterization and Crystal and Molecular Structures of {Ph4 P[(Se0 4 )(SnPh3 )(SnPh3X)]}n (X = Cl, Br)  
 Abstract    The reactions of bis[triphenyltin(IV)] selenate monohydrate [(Ph3Sn)204S e H 2 0 ] with tetraphenylphosphonium halides PluPX (X = Cl, Br) led to the formation of 1:1 complexes of formula {Ph4P[(Se0 4)(SnPh0 (SnPh3X)]k [X = Br (I) or Cl (II)], which were characterized by infrared, Mössbauer and H, 13C and Sn NMR techniques and by X-ray diffractometry. The complexes have polymeric structures in which the [SnPh3]+ units alternate with bridging [SeC>4]2-units, each of which also bears an SnPh3X side chain. In both the [SnPh3]+ and the [SnPhsX] units the coordination polyhedron of the tin atom is a distorted trigonal bipyramid. 
  Reference    Z. Naturforsch. 56b, 233—238 (2001); received November 22 2000 
  Published    2001 
  Keywords    Tin(IV), Triphenyltin Complexes, Selenate Complexes 
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 Identifier    ZNB-2001-56b-0233 
 Volume    56 
37Author    Ratikanta Mishra, Rolf-Dieter Hoffmann, Rainer PöttgenRequires cookie*
 Title    New Magnesium Compounds /fcE2Cu2Mg (RE = Y, La -Nd, Sm, Gd -Tm, Lu) with Mo2FeB2 Type Structure  
 Abstract    The title compounds were synthesized by reaction of the elements in sealed tantalum tubes in a water-cooled sample chamber in a high-frequency furnace. These magnesium intermetallics crystallize with the tetragonal Mo2FeB2 type structure, space group PMmbm. The lattice pa­ rameters of all compounds were refined from X-ray powder data. Single crystal X-ray data yielded a = 792.09(6), c = 396.31(8) pm, wR2 = 0.0396, 315 F 2 values for La2Cu2Mg, a = 778.30(5), c = 384.04(5) pm, wR2 = 0.0954, 214 F 2 values for Nd2Cu2Mg, and a = 762.65(5), c = 374.09(3) pm, wR2 = 0.0566, 186 F 2 values for Y2Cu2Mg with 12 variable parameters for each refinement. The /?£, 2Cu2Mg structures can be described as an intergrowth of distorted A1B2 and CsCl related slabs of compositions RECui and REMg. Chemical bonding in La2Cu2Mg was investigated on the basis of extended Hückel calculations and compared to isotypic La2Cu2ln. This structure was also refined from single crystal X-ray data: PMmbm, a = 780.8(2), c = 400.1(2) pm, wR2 = 0.0351, 211 F 2 values and 12 variable parameters. 
  Reference    Z. Naturforsch. 56b, 239—244 (2001); received January 25 2001 
  Published    2001 
  Keywords    Intermetallic Compounds, Magnesium, Crystal Structure 
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 Identifier    ZNB-2001-56b-0239 
 Volume    56 
38Author    Soheila Chitsaz, Jochen Pauls, Bernhard NeumüllerRequires cookie*
 Title    Die Kristallstrukturen von [(TMEDA)LiCl]2*Toluol und [(MeCN)2LiCl]« The Crystal Structures of [(TMEDA)LiCl]2 Toluene and [(MeCN)2LiClln  
 Abstract    Lithium Chloride Solvates Single crystals of [(TMEDA)LiCl]2 toluene (1) and [(MeCN)2LiCl]" (2) can be obtained by dissolving LiCl in TMEDA or acetonitrile and crystallization (after addition of toluene for 1) at 
  Reference    Z. Naturforsch. 56b, 245—248 (2001); eingegangen am 4. Dezember 2000 
  Published    2001 
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 Identifier    ZNB-2001-56b-0245 
 Volume    56 
39Author    VictorA. Trush3, Jolanta Swiatek-Kozlowskab, VictorV. Skopenkoa, VladimirM. Amyrkhanov3Requires cookie*
 Title    A New Binuclear Lutetium(III) Dimethyl-N-trichloroacetylamidophosphate Complex with a 7 , 7 *-Dipyridyl Bridge, {Lu[CCl3C(0)N P(0)(0C H 3)2]3}2-A x(7,7'-dipy)  
 Abstract    A new type of binuclear coordination compound of lutetium, {Lu2L6 /i-(7 ,7 '-dipy)} (where L = dimethyl-N-trichloroacetylamidophosphate anion and 7 ,7 '-dipy = 4,4'-dipyridyl), has been obtained. The IR spectroscopic data reveal that the ambidentate phosphoryl ligand is coordinated to the metal center in a bidentate manner via the phosphoryl and carbonyl oxygen atoms. The crystal and molecular structure of {LniLö-^-(7 ,7 '-dipy)} has been determined by means of X-ray diffraction (triclinic, space group P i with parameters: a = 9.259(2), b = 12.530(3), c = 16.548(3) A, a = 85.44(3)°, ß = 75.64(3)°, 7 = 70.56(3)°, Z = 1). The structure is made up of centrosymmetric binuclear molecules, in which the neutral heterocyclic ligand is coordinated to the metal centers in a bidentate bridging manner via its nitrogen atoms. The coordination number of each Lu(III) atom is 7 [60(L~) + N((7 ,7 '-dipy)]. Phosphoryl and carbonyl groups of the L~ ligands are disposed in syn-position and are included in the six-membered chelate metallocycles. The coordination polyhedron of lutetium can be described as distorted mono-capped octahedron. 
  Reference    Z. Naturforsch. 56b, 249—254 (2001); received September 25 2000 
  Published    2001 
  Keywords    Lutetium, Carbacylamidophosphate, Dipyridyl 
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 Identifier    ZNB-2001-56b-0249 
 Volume    56 
40Author    Fritz Preuss, Uwe Fischbeck, Frank Tabellion, Jens Pemer, Walter Frank, Guido ReissRequires cookie*
 Title    Darstellung, Reaktionen und 51V-NMR-spektroskopische Untersuchungen der Imidovanadium(V)-trichloride: RN=VC13 (R = H, SiMe3, Alkyl) Synthesis, Reactions and 51V NMR Spectroscopic Studies of Imidovanadium(V) Trichlorides: RN=VC13 (R = H, SiMe3, Alkyl)  
 Abstract    Imidovanadium(V) Trichlorides The reactions of Me3SiN=VCl3 (1) with MeOH, PhOH, HCl, PyH+Cl~ or LiO'Bu have been studied. The reductive decomposition of 1 by hydrogen chloride in toluene yields HN=VC13 as a labile intermediate which could be isolated only in a small amount. The syntheses of RN=VC13 (R = neopent, "Pr, cyclohex, CPh3, 1-Ad) and [('BuN)2V2Cl4(/i-OC13H9)2] (15) are also described. All compounds obtained are characterized by 5 V NMR spectroscopy, the fluorenolato complex 15 by X-ray diffraction analysis. 
  Reference    Z. Naturforsch. 56b, 255—262 (2001); eingegangen am 23. November 2000 
  Published    2001 
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 Identifier    ZNB-2001-56b-0255 
 Volume    56 
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