Výsledky vyhledávání - "Pik Yuen Siew"

Across-space double bond interactions: the crystal and molecular structures of two chlorinated endo-endo-dienes and comparisons with a third homolog

Autor: Winnie Wong-Ng, J. T. Edward, Pik Yuen Siew, Dao Cong Dong, S. C. Nyburg

Publikováno v: Canadian Journal of Chemistry. 62:452-456

The crystal structures of two endo-endo-dienes, 5,6,7,8,9,9-hexachloro-1,4,4a,5,8,8a-hexahydro-endo-endo-1,4-ethano (and propano)-5,8-dimethanonaphthalene, 1b and 1c have been determined. These, together with the methano-homolog 1a (of known structur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4843940392018f29889c00dc7741cb7c
https://doi.org/10.1139/v84-077

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Structural studies of steric effects in phosphine complexes. Part XI. Synthesis, characterization, crystal and molecular structure of the dinitrato(trimesitylarsine)mercury(II) dimer

Autor: George Ferguson, Elmer C. Alyea, Pik Yuen Siew, Shelton A. Dias

Publikováno v: Canadian Journal of Chemistry. 61:257-262

The synthesis and crystal and molecular structure of the dinitrato(trimesitylarsine)mercury(II) dimer are reported. The compound [HgAs(mesityl)3(NO3)2]2 belongs to the monoclinic space group P21/c[Formula: see text] with a = 20.001(2), b = 17.591(5),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e782812413b7bac459cecb37adca9588
https://doi.org/10.1139/v83-045

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Co-ordination chemistry of arenediazoate anions: synthesis and X-ray crystallographic characterisation of η-cyclopentadienyl-(anti-p-nitrobenzenediazoato-N1)(triphenylphosphine)nickel(II), [Ni(η-C5H5)(PPh3)(ON2C6H4NO2-p)]

Autor: George Ferguson, Timothy J. Desmond, Fergus J. Lalor, Pik Yuen Siew

Publikováno v: J. Chem. Soc., Dalton Trans.. :1981-1985

Sodium anti-p-nitrobenzenediazoate reacts with [Ni(η-C5H5)(PPh3)Cl] to give an 83% yield of the title complex [Ni(η-C5H5)(PPh3)(ON2C6H4NO2-p](3), the first authenticated example of an arenediazoato-complex. Crystals of complex (3) are triclinic, sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cdb6c26af273984792de44531c4755d4
https://doi.org/10.1039/dt9820001981

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An X-Ray Study of the Synthetic Intermediate 9-Cyano-1,10-Dimethyl-6-Ethylenedioxy-1-Octalin

Autor: Pik-Yuen Siew, Harry Lynton

Publikováno v: Canadian Journal of Chemistry. 53:192-194

The crystal structure of the synthetic intermediate, 9-cyano-1,10-dimethyl-6-ethy]enedioxy-1-octalin, C15H21O2N, was solved by direct methods. The compound crystallizes in the space group p21/c with cell dimensions a = 12.282(4), b = 7.144(3), c = 15

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02c5a8accf4087d23e32c57286bf9de9
https://doi.org/10.1139/v75-026

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X-ray crystal structure analysis of a bisepoxide derived from secologanin: the structure and absolute configuration

Autor: Gavin N. Saunders, John R. Purdy, Stanley C. Nyburg, Pik Yuen Siew, Stewart McLean

Publikováno v: Canadian Journal of Chemistry. 61:282-283

The structure and absolute configuration of a bisepoxide (2) produced by oxidation of tetraacetylsecologanin dimethyl acetal (1) with m-chloroperbenzoic acid have been established by X-ray crystal structure analysis. Epoxidation of the vinyl side cha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3a3245b4724b2d26a46bc242eb0f20a
https://doi.org/10.1139/v83-050

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exo-2-Chloro-anti-[7](4-chlorophenylthio)benzo[8,9,10]trinorbornene, C17H14Cl2S

Autor: B. Toyonaga, G. H. Schmid, Pik Yuen Siew, S. C. Nyburg

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 39:889-890

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a18baec21d4eace095e2723818636e2c
https://doi.org/10.1107/s0108270183006733

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Synthesis and X-ray crystal structure of a (C 2)-C20-hexaquinane derivative, a potential dodecahedrane precursor

Autor: Pongsak Vibuljan, M. Anthony McKervey, Pik Yuen Siew, George Ferguson

Publikováno v: Journal of the Chemical Society, Chemical Communications. :912

In an iterative synthesis utilising four reagents, cis-bicyclo[3.3.0]octane-2,6-dione has been converted into a (C2)-C20-hexaquinane derivative, a potential precursor of the C20H20pentagonal polycycle dodecahedrane, the all-syn–cis-stereochemistry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22d1580b608a2dc2d7d83e6de4aeb16b
https://doi.org/10.1039/c39810000912

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Silver(I) complexes of the potentially chelating olefinic ligands 2,2-dimethylbut-3-enyl methyl sulphide and 2,2-dimethyl-2-silabut-3-enyl methyl sulphide. Crystal structure analysis of bis(2,2-dimethylbut-3-enyl methyl sulphide)silver(I) tetrafluoroborate, (2,2-dimethylbut-3-enyl methyl sulphide)silver(I) perchlorate, (2,2-dimethylbut-3-enyl methyl sulphide)nitratosilver(I), and (2,2-dimethylbut-3-enyl methyl sulphide)-trifluoroacetatosilver(I)

Autor: Robert McCrindle, Pik Yuen Siew, George Ferguson, Ronald D. Myers, Elmer C. Alyea, Shelton A. Dias, Alan J. McAlees

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :481

The ligands 2,2-dimethylbut-3-enyl methyl sulphide (1a) and 2,2-dimethyl-2-2-silabut-3-enyl methyl sulphide (1b) form analogous sets of complexes with a series of silver salts. Thus, 1 : 1 complexes have been obtained from Ag[BF4], Ag[ClO4], Ag[NO3],

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dbad76b0df31ab72db06b856f3e4a1d7
https://doi.org/10.1039/dt9810000481

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Reactions of co-ordinated nucleophiles. Preparation, characterization, and crystal structure of penta-ammine(phenylthiocarbamato-S)cobalt-(III) perchlorate monohydrate

Autor: Robert J. Balahura, Lynda Ecott, George Ferguson, Pik Yuen Siew

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :747

The title complex [Co(NH3)5(SCONHPh)][ClO4]2 has been prepared by the addition of [Co(NH3)5(OH2)]-[ ClO4]3 to phenyl isothiocyanate in dimethylformamide. A mechanism for formation of the complex is proposed whereby an O-bonded complex is initially fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49c26ce71cd8ebfa6c15e2070074966f
https://doi.org/10.1039/dt9820000747

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