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1. Single-crystal X-ray structure determinations of vardenafil, vardenafil dihydrate, vardenafil monohydrochloride trihydrate and vardenafil dihydrochloride hexahydrate

Author:
Wu, Dedong; Atassi, Faraj
Source:
Zeitschrift für Naturforschung 2021 v.76 no.1 pp. 45-53
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; X-ray diffraction; crystal structure;     Show all 3 Subjects
Abstract:
... The crystal and molecular structures of vardenafil (free, unprotonated base), vardenafil dihydrate and the hydrochloride salts, vardenafil monohydrochloride trihydrate and vardenafil dihydrochloride hexahydrate, were determined by single-crystal X-ray diffraction. The crystal structure of vardenafil monohydrochloride trihydrate is in good agreement with the published crystal structure obtained by ...
DOI:
10.1515/znb-2020-0083

2. Single-crystal structure determination of LaNi₅–ₓInₓ and LaNi₉–ₓIn₂₊ₓ

Author:
Kalychak, Yaroslav; Dzevenko, Mariya; Babizhetskyy, Volodymyr; Daszkiewicz, Marek; Gulay, Lubomir
Source:
Zeitschrift für Naturforschung 2020 v.75 no.6-7 pp. 553-557
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; crystal structure; lanthanum;     Show all 3 Subjects
Abstract:
... The crystal structures of the solid solution LaNi₅–ₓInₓ (x = 0.51) and the ternary compound LaNi₉–ₓIn₂₊ₓ (x = 0.80) have been investigated by single-crystal X-ray data. The LaNi₅–ₓInₓ phase is isotypic with CaCu₅: space group P6/mmm, a = 5.042(2), c = 4.009(1) Å. The crystal structure investigation of LaNi₉–ₓIn₂₊ₓ (x = 0.80) was performed at T = 295 and 100 K: YNi₉In₂ type, space group P4/mbm, a = ...
DOI:
10.1515/znb-2020-0020

3. Squares of gold atoms and linear infinite chains of Cd atoms as building units in the intermetallic phases REAu₄Cd₂ (RE=La–Nd, Sm) with YbAl₄Mo₂-type structure

Author:
Paulsen, Christian; Block, Theresa; Benndorf, Christopher; Oeckler, Oliver; Bönnighausen, Judith; Janka, Oliver; Pöttgen, Rainer
Source:
Zeitschrift für Naturforschung 2020 v.75 no.1-2 pp. 73-82
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; cadmium; gold; ions; magnetism; tantalum;     Show all 6 Subjects
Abstract:
... The gold-rich intermetallic compounds REAu₄Cd₂ (RE = La–Nd, Sm) were synthesized from the elements in sealed tantalum ampoules. Their characterization by X-ray powder and single crystal data confirmed the tetragonal YbAl₄Mo₂ type, space group I4/mmm. The basic building units are Au₄ squares (278 pm Au–Au in CeAu₄Cd₂) and infinite linear cadmium chains (275 pm Cd–Cd in CeAu₄Cd₂). We exemplarily stu ...
DOI:
10.1515/znb-2019-0153

4. A study of antituberculosis activities and crystal structures of (E)-2-[2-(arylidene)hydrazinyl]pyrimidine and (E)-N¹-(arylidene)pyrimidine-2-carbohydrazide derivatives

Author:
Pinheiro, Alessandra C.; Nogueira, Thaís C. M.; da Costa, Cristiane França; Lourenço, Cristina; Low, John N.; Wardell, James L.; Wardell, Solange M. S. V.; de Souza, Marcus V. N.
Source:
Zeitschrift für Naturforschung 2020 v.75 no.12 pp. 1011-1028
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; Mycobacterium tuberculosis; databases; heterocyclic compounds; moieties;     Show all 5 Subjects
Abstract:
... A study of the anti-tuberculosis activity against Mycobacterium tuberculosis ATTC 27294 and an X-ray structural determination of (E)-2-[2-(arylidene)hydrazinyl]pyrimidine, 1, and (E)-N¹-(arylidene)pyrimidine-2-carbohydazide, 2, derivatives are presented. The effect of the substituents in the aryl moiety on the antituberculosis (anti-TB) activities of 1 and 2 is compared with that of other heteroar ...
DOI:
10.1515/znb-2020-0108

5. Lanthanide orthothiophosphates revisited: single-crystal X-ray, Raman, and DFT studies of TmPS₄ and YbPS₄

Author:
Scholz, Tanja; Pielnhofer, Florian; Eger, Roland; Lotsch, Bettina V.
Source:
Zeitschrift für Naturforschung 2020 v.75 no.1-2 pp. 225-231
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; Raman spectroscopy; X-ray diffraction; cations; color; crystal structure; crystallization; crystals; lanthanides; semiconductors; thermal stability;     Show all 11 Subjects
Abstract:
... The crystal structures of the lanthanide orthothiophosphates LnPS₄ (Ln=lanthanide) have been extensively investigated in the past. Up to now, however, single crystals of two members of this series – TmPS₄ and YbPS₄ – have not been available. Here, we report a modified synthesis protocol for TmPS₄ and YbPS₄ yielding single crystals suitable for X-ray diffraction. Both compounds crystallize in the t ...
DOI:
10.1515/znb-2019-0217

6. Tetravalent lead in nature – plattnerite crystals from Mine du Pradet (France) and Mount Trevasco (Italy)

Author:
Paulsen, Christian; Benndorf, Christopher; Kösters, Jutta; Galéa-Clolus, Valérie; Clolus, Pierre; Hoffmann, Rolf-Dieter; Pöttgen, Rainer
Source:
Zeitschrift für Naturforschung 2019 v.74 no.5 pp. 427-432
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; X-ray diffraction; crystals; data collection; lead; France; Italy;     Show all 7 Subjects
Abstract:
... Natural lead dioxide samples (β modification) from Cap Garonne, Mine du Pradet, France and Mount Trevasco, Italy were studied by single crystal X-ray and electron diffraction, clearly manifesting the rutile-type structure. A needle from the Mount Trevasco sample was investigated on a single crystal diffractometer: P4₂/mnm, a = 495.81(10), c = 338.66(7) pm, wR = 0.0513, 117 F² values (all data) and ...
DOI:
10.1515/znb-2019-0040

7. Ni(II) complexes with thioether-functionalized silylamide ligands. Synthesis and crystal structures of [Ni{Me₂Si(N-C₆H₄-2-S-t-Bu)₂}], [Ni{Ph₂Si(N-C₆H₄-2-SMe)₂}] and [Ni{Ph₂Si(N-C₆H₄-2-SPh)₂}]

Author:
Albrecht, Ralf; Liebing, Phil; Morgenstern, Uwe; Wagner, Christoph; Merzweiler, Kurt
Source:
Zeitschrift für Naturforschung 2019 v.74 no.2 pp. 233-240
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; aniline; bromine; chemical bonding; crystal structure; halides; ligands; nickel;     Show all 8 Subjects
Abstract:
... Thioether-functionalized aminosilanes R₂Si(NH-C₆H₄-2-SR′)₂ with R=Me, Ph and R′=t-Bu, Me, Ph were synthesized from the corresponding dichlorosilanes R₂SiCl₂ and lithiated aniline derivatives LiNH-C₆H₄-2-SR′. Treatment of the functionalized aminosilanes R₂Si(NH-C₆H₄-2-SR′)₂ with two eq. of n-BuLi and subsequent reaction with nickel(II) halides NiX₂ (X=Cl, Br) or [Ni(acac)₂(TMEDA)] led to the format ...
DOI:
10.1515/znb-2018-0263

8. Thiosugars, 17. Preparation and structure of a novel deoxythionucleoside

Author:
Voss, Jürgen; Otzen, Dirk; Adiwidjaja, Gunadi
Source:
Zeitschrift für Naturforschung 2018 v.73 no.8 pp. 553-556
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; chromatography; nuclear magnetic resonance spectroscopy; thymine;     Show all 4 Subjects
Abstract:
... 1-(3′,5′-Anhydro-2′-deoxy-3′-thio-D-lyxo-furanosyl)thymine is prepared from the corresponding methyl pentofuranoside by using the silyl Hilbert–Johnson reaction. The α- and β-anomers are separated by column chromatography and their configuration is elucidated by NMR spectroscopy and, in case of the α-anomer, by an X-ray structure determination. ...
DOI:
10.1515/znb-2018-0037

9. Two copper(I) complexes of bi- (or tri-)pyrazolyl ligands featuring Cu₃pz₃ or Cu₄pz₄ motifs

Author:
Zhang, Jin-Xue; Yan, Ting-Ting; Kou, Jun-Feng; Zhang, Wen-Hua; Yang, Guang
Source:
Zeitschrift für Naturforschung 2015 v.70 no.1 pp. 59-64
ISSN:
1865-7117
Subject:
X-radiation,   etc   ; copper; ligands;     Show all 3 Subjects
Abstract:
... The semirigid bipyrazolyl and tripyrazolyl ligands, namely 1,4-bis((3,5-diphenyl-1H-pyrazol-4-yl)-methyl)benzene (H₂L¹) and 1,3,5-tris((3,5-diphenyl-1H-pyrazol-4-yl)methyl)benzene (H₃L²), and their Cu(I) complexes (Cu₂L¹)ₙ (1), Cu₄(HL²)₂ (2) have been prepared and structurally characterized. Single-crystal X-ray analysis demonstrates that 1 exhibits a 2D structure featuring cyclic trinuclear Cu₃pz ...
DOI:
10.1515/znb-2014-0173

10. Übergangsmetallkomplexe von Diazenen, XV [1] Darstellung und Eigenschaften von Heterodimetallkomplexen des Typs LnM-(cis-RN=NR)-MʹLm Transition Metal Complexes of Diazenes, XV [1] Synthesis and Properties of Heterodimetal Complexes LnM-(cis-RN=NR)-MʹLm

Author:
Battaglia, R.; Kisch, H.; Krüger, C.; Liu, L.-K.
Source:
Zeitschrift für Naturforschung 2014 v.35 no.6 pp. 719-723
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; chromium; molybdenum;     Show all 3 Subjects
Abstract:
... Complexes of type LₙM(η² - pentamethylenediazirine)MʹLₘ, LₙM/MʹLₘ = (CO)₅Cr/Mo(CO)₅, (CO)₅Cr/Fe(CO)₄, (CO)₅W/Fe(CO)₄ and (CO)₅Cr/Mn(CO)₂⁵η(-MeC₅H₄) were prepared from [MʹLₘ(THF)] or Fe₂(CO)₉ and (η¹ -pentamethylenediazirine)MLₙ. The structure of the Cr/Mo complex was determined by X-ray analysis. The IR and UV-VIS data resemble those of the corresponding homodi-metal complexes. ...
DOI:
10.1515/znb-1980-0616

11. Über Oxocuprate, XX Ein Erdalkalioxocuprat(II) mit geschlossenen Baugruppen: BaCuO2 / About Oxocuprates, XX Alkaline-earth Oxocuprate(II) with Closed Structural Groups : BaCuO2

Author:
Kipka, R.; Müller-Buschbaum, Hk.
Source:
Zeitschrift für Naturforschung 2014 v.32 no.2 pp. 121-123
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; barium; copper;     Show all 3 Subjects
Abstract:
... The new alkaline-earth oxocuprate(II) BaCuO₂ was prepared and investigated by single crystal X-ray methods. (Space group : Oₕ⁹-Im 3 m, lattice constant: a = 1827 pm.) The distribution of 360 atoms per unit cell leads to a complicated polyhedral framework with Cu²⁺ in well known square coordination. One of the Ba²⁺ positions has the extraordinary coordination number 24. ...
DOI:
10.1515/znb-1977-0201

12. 1,2-Bis(1′,3′ -dimethylimidazolin-2′-iminato)ethan - ein neuer Chelatligand [1] / 1,2-Bis(1′,3′-dimethylimidazolin-2′-iminato)ethane - a Novel Chelating Ligand [1]

Author:
Kuhn, Norbert; Grathwohl, Martin; Steimann, Manfred; Henkel, Gerald
Source:
Zeitschrift für Naturforschung 2014 v.53 no.9 pp. 997-1003
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; ethane; ligands;     Show all 3 Subjects
Abstract:
... The reaction of 2-imino-1,3-dimethylimidazoline (10, ImNH) with X-CH₂CH₂-X (11, X = p-CH₃C₆H₄SO₃) gives the diimine adduct ImN-CH₂CH₂-NIm · 2HX (12) from which the diimine ImN-CH₂CH₂-NIm (13) is obtained on treatment with KH. 13 reacts with (C₆H₅CN)₂PdCl₂ (15) to give the chelate complex (ImN-CH₂CH₂-NIm)PdCl₂ (16). The X-ray structures of 12 and 16 are reported. ...
DOI:
10.1515/znb-1998-0911

13. Chalkogenolat-Ionen und ihre Derivate, V Kristall- und Molekülstruktur von 2.8-Dimethyldibenzo [c.g] [1.2.5.6] tetrathiacyclooktadien, einem Oxidationsprodukt von 4-Methylbenzol-1.2-dithiol/Chalcogenolates and their Derivatives, V Crystal and Molecular Structure of 2.8-Dimethyldibenzo[c,g][1,2,5,6]tetrathiaocin, an Oxidation Product of 4-Methylbenzene-1,2-dithiol

Author:
Kopf, Jürgen; Deuten, Klaus von; Nakhdjavan, Bahman; Klar, Günter
Source:
Zeitschrift für Naturforschung 2014 v.34 no.1 pp. 48-51
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; oxidation; sulfides;     Show all 3 Subjects
Abstract:
... The structure of 2,8-dimethyldibenzo[c,g][1,2,5,6]tetrathiaocin (1b) has been determined by X-ray methods and discussed in connection with the preferred conformations of diaryl disulfides. The compound has the anti-form I. The SS-distance is 205.8 pm, the mean CSS-angle 104.1°, and the CSS/SSC-dihedral angle 111.1°. ...
DOI:
10.1515/znb-1979-0111

14. (CO)5CrFe2(CO)6PPh, ein tetraedrischer Cluster mit achtfach koordiniertem Chrom(O)/ (CO)5CrFe2(CO)6PPh, a Tetrahedral Cluster Containing an Eightfold Coordinated Chromium(O)

Author:
Huttner, G.; Mohr, G.; Friedrich, P.
Source:
Zeitschrift für Naturforschung 2014 v.33 no.11 pp. 1254-1256
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; chromium; irradiation;     Show all 3 Subjects
Abstract:
... The title compound may be prepared by irradiation of (CO)₅CrFe₂(CO)₈PPh, which itself is accessible from Fe₂(CO)₉ and (CO)₅CrPPhCl₂. It forms a tetrahedral cluster in which a pentacarbonylchromium fragment acts as the apex of a tetrahedron the base of which ist formed by an Fe₂P-triangle. X-ray analysis reveals that the chromium atom interacts strongly with all three atoms of the tetrahedral base, ...
DOI:
10.1515/znb-1978-1111

15. Crystal and Molecular Structure of Two Tetradentate “Oxime-and-Amide” Ligands

Author:
Fritsky, Igor O.; Karaczyn, Aldona; Kozłowski, Henryk; Głowiak, Tadeusz; Prisyazhnaya, Elena V.
Source:
Zeitschrift für Naturforschung 2014 v.54 no.4 pp. 456-460
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; geometry; ligands;     Show all 3 Subjects
Abstract:
... Syntheses and X-ray structure analyses of two new tetradentate ligands with “oxime-and-amide” donor systems (N,N′-bis(2-hydroiminopropionyl)-1,2-diaminoethane and N,N′-bis(2- hydroxyiminopropionyl)-1,4-diaminobutane) were performed. The overall conformation of both ligands is distinctly different from that reported earlier for N,N′-bis(2-hydroxyiminopropionyl)- 1,2-diaminopropane. The number of me ...
DOI:
10.1515/znb-1999-0406

16. CsNaTe - Darstellung und Charakterisierung von Cäsiumnatriumtellurid / CsNaTe - Preparation and Characterization of Cesium Sodium Telluride

Author:
Fischer, Karsten; Feldbaum-Möller, Elisabeth; Vogt, Petra; Winter, Volker; Sabrowsky, Horst
Source:
Zeitschrift für Naturforschung 2014 v.51 no.4 pp. 605-606
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; cesium; sodium;     Show all 3 Subjects
Abstract:
... The dark green compound CsNaTe has been prepared. The characterization by X-ray powder methods leads to a tetragonal lattice (P4/nmm) with a = 530.8 (4), c = 853.2 (1) pm and Z = 2. The structure ist related to the PbFCl structure type. ...
DOI:
10.1515/znb-1996-0428

17. Darstellung und Röntgenstrukturanalyse von (DichIoro)-(1,3,5,7-tetramethyI-2,4,6,8,9,10-hexathiaadamantan)palladium(II), PdCl2(CH3)4C4S6 Preparation and X-Ray Structure Analysis of (D ichloro)-(l,3,5,7-tetram ethyl-2,4,6,8,9,10-hexathiaadam antane)palladium (II), PdCl2(CH3)4C4S6

Author:
Pickardt, Joachim; Rautenberg, Norbert
Source:
Zeitschrift für Naturforschung 2014 v.41 no.4 pp. 409-412
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; ligands; palladium;     Show all 3 Subjects
Abstract:
... By reaction of PdCl₂(C₆H₅CN) 2 with 1,3,5,7-tetram ethyl-2,4,6,8,9,10-hexathiaadam antane, (CH₃)₄C₄S₆, (“TMTA”), the complex PdCl₂-TMTA could be obtained. X-ray structure analyses were performed for the free ligand TMTA as well as for the adduct. Both com pounds crystallize monoclinically, space group P2₁/n, lattice parameters for TMTA are a= 845.9(5), b= 1225.8(7), c= 1314.8(8) pm, ß= 93.28(5)°; ...
DOI:
10.1515/znb-1986-0403

18. Darstellung und Struktur von [Ti(acac)3]ClO4 / Preparation and Structure of [Ti(acac)3]ClO4

Author:
Thewalt, U.; Adam, T.
Source:
Zeitschrift für Naturforschung 2014 v.33 no.2 pp. 142-145
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; cations; perchlorates;     Show all 3 Subjects
Abstract:
... The title compound has been obtained from acetylacetone, AgClCO₄ and either π-C₅H₅TiCl₃ or TiCl₄. An X-ray structure analysis (R = 0.068) shows the cation to be octahedrally coordinated. The average values of the Ti-O distances and of the endocyclic O-Ti-O angles are 1.94 Å and 84.3°, respectively ...
DOI:
10.1515/znb-1978-0204

19. Die Röntgenstrukturanalyse der Pyrrolide (CH3)2Al - C4H3NCH3 und (CH3)2Ga - N(CCH3)4 / The X-Ray Structure Determination of the Pyrrolides (CH3)2Al - C4H3NCH3 and (CH3)2Ga - N(CCH3)4

Author:
Hausen, Hans-Dieter; Tödtmann, Jochen; Weidlein, Johann
Source:
Zeitschrift für Naturforschung 2014 v.49 no.3 pp. 430-433
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; gallium; indium;     Show all 3 Subjects
Abstract:
... N-M ethyl-2-dimethylaluminium pyrrolide, (CH₃)₂Al -C₄H₃NCH₃, crystallizes in the triclinic space group P1̄ with the lattice constants a = 700.5(1), b = 725.9(1), c = 886.8(1) pm, α = 67.69(1)°, β = 70.99(1)°, γ = 88.48(1)°, and Z = 2. This compound is isotypic with the gallium homologue [1], the shortest metal-ring contact between the two molecules of one unit cell decreases to 228.6 pm. N-dimethy ...
DOI:
10.1515/znb-1994-0324

20. Elementorganische Verbindungen mit o-Phenylenresten, XXIII [1] 2,3,6,9,10,13-Hexamethoxy-5,7,12,14-tetrathia-5,7,12,14-tetrahydropentacen - 2.3-Dichlor-5,6-dicyan-1,4-benzochinon (1/2) / Organometalloidal Compounds with o-Phenylene Substituents, XXIII [1] 2,3,6,9,10,13-Hexamethoxy-5,7,12,14-tetrathia-5,7,12,14-tetrahydropentacene - 2.3-Dichloro-5,6-dicyano-1,4-benzoquinone (1 /2)

Author:
Berges, Peer; Mansei, Volker; Klar, Günter
Source:
Zeitschrift für Naturforschung 2014 v.47 no.2 pp. 211-216
ISSN:
0932-0776
Subject:
X-radiation,   etc   ; benzene; benzoquinones;     Show all 3 Subjects
Abstract:
... The title compound is prepared by combining hot solutions of the components. X-ray analysis shows hexamethoxytetrathiatetrahydropentacene to act as a bifunctional donor, each of its dimethoxybis(organylthio)benzene units being in contact with a dichlorodicyanoquinone molecule. In the crystal stacks of the type DA₂ ,DA₂, ··· with an alternating arrangement o f donor and acceptor molecules are forme ...
DOI:
10.1515/znb-1992-0212