Zobrazeno 1 - 10
of 116
pro vyhledávání: '"George A. Sim"'
Autor:
George A. Sim, Andrew A. Freer
Publikováno v:
ChemInform. 22
X-Ray crystallographic studies have shown that the imidazolinium group in 2-(2-methoxy-2,3-dihydro-1,4-benzodioxin-2-yl)-4,5-dihydroimidazolium bromide (4), (+)-2-(2-methoxy-2,3-dihydro-1,4-benzodioxin-2-yl)-4,5-dihydroimidazolium hydrogen dibenzoylt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0200b873dca40321a02f7f76a14c353
https://doi.org/10.1002/chin.199103058
https://doi.org/10.1002/chin.199103058
Publikováno v:
ChemInform. 22
C19H3203, Mr=308.49, orthorhombic, P212121, a = 7-072 (3), b = 9"389 (3), c = 27-888(11)A, v=1852(2)A 3, z=4, Ox = I. 11 Mg m - 3, ,t(Mo Ka) = 0.71069 )k, /z = 0.08 mm-1, F(000) = 680, T = 293 K, R = 0.050 for 1475 independent reflections with I> 2-5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86265ebbf5a5122a7eac882fb9debfbc
https://doi.org/10.1002/chin.199107215
https://doi.org/10.1002/chin.199107215
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 46:2149-2152
C19H3203, Mr=308.49, orthorhombic, P212121, a = 7-072 (3), b = 9"389 (3), c = 27-888(11)A, v=1852(2)A 3, z=4, Ox = I. 11 Mg m - 3, ,t(Mo Ka) = 0.71069 )k, /z = 0.08 mm-1, F(000) = 680, T = 293 K, R = 0.050 for 1475 independent reflections with I> 2-5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::624f83a7ba2dae42f43c40e35016b516
https://doi.org/10.1107/s0108270190001147
https://doi.org/10.1107/s0108270190001147
Publikováno v:
ChemInform. 21
3-(2-Carboxyethyl)-4-piperidone (5), prepared from N-benzyl-4-piperidone and benzyl acrylate (9), was thermally cyclized in the presence of dibutyltin oxide to 1-azabicyclo[3.3.1 ]nonane-2,6-dione (4), which possesses a bridgehead amide nitrogen. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00f6e29f387c24b8f9048719320973d0
https://doi.org/10.1002/chin.199004206
https://doi.org/10.1002/chin.199004206
Publikováno v:
25th Congress Ampere on Magnetic Resonance and Related Phenomena ISBN: 9783540531364
Combining single-Crystal and polycrystalline e. p. r. spectroscopy with high-resolution n. m. r. spectroscopy, X-ray crystallography and classical chemistry, has enabled the steps in the red-photolysis reactions of the two forms of solid humulene nit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aed668624f139115ed06c233be396abb
https://doi.org/10.1007/978-3-642-76072-3_88
https://doi.org/10.1007/978-3-642-76072-3_88
Autor:
Andrew A. Freer, George A. Sim
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1717
X-Ray crystallographic studies have shown that the imidazolinium group in 2-(2-methoxy-2,3-dihydro-1,4-benzodioxin-2-yl)-4,5-dihydroimidazolium bromide (4), (+)-2-(2-methoxy-2,3-dihydro-1,4-benzodioxin-2-yl)-4,5-dihydroimidazolium hydrogen dibenzoylt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58ef0241ed1ed81492f9119dcaa51a35
https://doi.org/10.1039/p29900001717
https://doi.org/10.1039/p29900001717
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :110-113
The p-bromophenylboronate ester formed by 17α, 20β,21-trihydroxypregn-4-en-3-one has been shown by X-ray crystallography to have a six-membered ring structure involving the 17- and 21-hydroxy-groups. The dioxaborinane ring has an envelope-like conf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6886f594fd3720697e0a251cb631124
https://doi.org/10.1039/p29760000110
https://doi.org/10.1039/p29760000110
Publikováno v:
Tetrahedron. 39:3639-3643
From an extract of the roots of Catharanthus trichophyllus (Apocynaceae) an alkaloid, trichophylline ( 2 ) has been isolated which is a new skeletal variation of the Aspidosperma framework. The structure was solved by single crystal X-ray crystallogr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70110626a8ac319845bbe18cd8b82601
https://doi.org/10.1016/s0040-4020(01)88602-6
https://doi.org/10.1016/s0040-4020(01)88602-6
Autor:
George A. Sim, Philip J. Cox
Publikováno v:
Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 35:404-410
The crystal structures of 9-methylanthracene (I) and 5- methylnaphthacene (II) have been elucidated by direct methods, with adjustment of pseudohomometric variants on E maps. Both compounds crystallize in the 0567-7408/79/020404-07501.00
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::822066866d99afdbf5cafec5f9e6d613
https://doi.org/10.1107/s0567740879003642
https://doi.org/10.1107/s0567740879003642
Publikováno v:
J. Chem. Soc., Dalton Trans.. :83-86
Crystals of the title complex contain monomeric molecules [Cr(η-C5H5)(NO)(NPh2)I]. Crystals are monoclinic, space group P21, with a= 10.247(2), b= 8.888(2), c= 9.236(2)A, β= 91° 30(1)′, and Z= 2. Intensities have been measured by diffractometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7031351e072001d0ac71b858fc0d178d
https://doi.org/10.1039/dt9790000083
https://doi.org/10.1039/dt9790000083