Výsledky vyhledávání - "and Witold Kwiatkowski"

Conformation of cis-4-Hydroxy-praziquantel and its crystal and molecular structure

Autor: Katarzyna Kieć-Kononowicz, Witold Kwiatkowski, Gottfried Blaschke, Janina Karolak-Wojciechowska

Publikováno v: Archiv der Pharmazie. 324:479-482

The crystal structure of racemic cis-4-OH-PZQ - the main metabolite of the anthelmintic drug Praziquantel - has been determined by X-ray analysis and refined to R = 0.064. In the unit cell there are two independent molecules, but with a similar confo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d61f9b46aa942b10cc602c71857dd10e
https://doi.org/10.1002/ardp.2503240803

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Defining and Controlling the Aminoethanethiolate Chemistry of Bismuth(III): Synthesis and Comprehensive Characterization of the Homologous Thiolatobismuth Series

Autor: Neil Burford, and T. Stanley Cameron, Witold Kwiatkowski, Glen G. Briand

Publikováno v: Journal of the American Chemical Society. 120:11374-11379

Synthetic, spectroscopic (IR, Raman, NMR, APCI-MS), and X-ray crystallographic studies demonstrate that the highly favorable thiolation of bismuth can be controlled by manipulating stoichiometric c...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5742aff728d103c28e797b5fc8f9c57c
https://doi.org/10.1021/ja981575n

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Structure and activity studies of glycine receptor ligands, Part 3: structure and conformation of ethyl-N-[(5,5-diphenyl)-4-oxo-2-imidazolidyl]glycinate

Autor: Witold Kwiatkowski, Waldemar Ksiazek, Jadwiga Handzlik, A. Mrozek, Janina Karolak-Wojciechowska, Katarzyna Kieć-Kononowicz

Publikováno v: Journal of Molecular Structure. 447:89-96

As part of our investigation of compounds with potential affinity to the glycine binding site of MNDA receptors the structure of ethyl-N-[(5,5-diphenyl)-4-oxo-2-imidazolidyl]glycinate is reported: C 19 H 19 N 3 O 3 ; orthorombic; P2 1 2 1 2 1 ; a = 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e118b75fa1089d2b9e6f76dc0515a30
https://doi.org/10.1016/s0022-2860(98)00325-1

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Electronic conditions for anticonvulsant activity of diphenylsuccinimides: Crystal and molecular structure of 1,1-diphenyl-N-(2-pyridyl)-succinimide

Autor: A. Zejc, Witold Kwiatkowski, Janina Karolak-Wojciechowska, Jolanta Obniska, Marcin Błaszczyk

Publikováno v: Journal of Chemical Crystallography. 27:297-301

The X-ray structure of the title compound was performed to serve as the basis to find the “right” conformations among the minimum energy conformations derived from molecular modeling. The crystals of C21H16N2O2 are monoclinic, space groupP2l ln (

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https://doi.org/10.1007/bf02575977

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Preparation and structure of 2-chloro-1,3-dimethyldiaza-2-arsenane, 1,3-dimethyldiaza-2-arsenanium tetrachlorogallate, and butadiene cycloadducts of diazarsenium cations

Autor: Borzena Borecka, Witold Kwiatkowski, T. Stanley Cameron, Gang Wu, Charles L. B. Macdonald, Trenton M. Parks, Neil Burford

Publikováno v: Canadian Journal of Chemistry. 74:2209-2216

1,3-Dimethyldiaza-2-arsenanium tetrachlorogallate (crystal data: C5H12AsCl4GaN2, M = 386.61, orthorhombic, space group Pca21, a = 14.432(3) Å, b = 6.7580(14) Å, c = 13.905(3) Å, V = 1356.2(5) Å3) is synthesized by the routine chloride ion abstrac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3feed53ff1d5ef70757971a2c3b7c3e
https://doi.org/10.1139/v96-248

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Observed and Theoretical Deformation Density Studies of the Aziridinyl, Benzene, and Phosphazene Rings in the Crystal Structure of the Benzene Solvate of Hexaaziridinylcyclotriphosphazene

Autor: T. Stanley Cameron, Witold Kwiatkowski, Bozena Borecka

Publikováno v: Journal of the American Chemical Society. 116:1211-1219

The crystal structure and the electron density of the benzene solvate of hexaaziridinylcyclotriphosphazene have been analyzed using single-crystal X-ray diffraction at 200 K with Mo Kα radiation and an area detector to a resolution of sin(θ max )/�

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https://doi.org/10.1021/ja00083a006

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Crystal chemistry of tetraradial species. Part 3. Salts of aliphatic Schiff bases crystallizable from aqueous media: crystal structures of five iminium tetraphenylborates and a 6-31G* ab initio study of simple iminium ions

Autor: D. Adhikesavalu, Witold Kwiatkowski, S. C. Choi, T. Stanley Cameron, Pradip K. Bakshi, Osvald Knop

Publikováno v: Canadian Journal of Chemistry. 71:1495-1523

Recrystallization of a primary or secondary alkylammonium tetraphenylborate (TB) from approximately 1:1 mixtures of Me2CO (or MeEtCO) and water yields, against expectation, the TB of the corresponding iminium cation and thus provides an easy route to

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https://doi.org/10.1139/v93-190

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Crystal and molecular structure of the (?)-N-hydroxyimide of (10-pinene-2-yl) succinimic acid

Autor: Janina Karolak-Wojciechowska, Witold Kwiatkowski, Stanis aw W. Markowicz

Publikováno v: Journal of Crystallographic and Spectroscopic Research. 23:423-429

Two independent molecules in the unit cell are the same enantiomer of the title compound but possess slightly different conformations. Both conformers are joined by H-bonds to one water molecule. The configuration at C11 was established asR.Crystal d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9226bfb3cc5dee7dac792d8588569c9f
https://doi.org/10.1007/bf01159146

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