Zobrazeno 1 - 10
of 237
pro vyhledávání: '"Urs D. Wermuth"'
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 2, Pp 203-208 (2017)
The structures of the alkali metal (K, Rb and Cs) complex salts with 4-aminophenylarsonic acid (p-arsanilic acid) manifest an isotypic series with the general formula [M2(C6H7AsNO3)2(H2O)3], with M = K {poly[di-μ3-4-aminophenylarsonato-tri-μ2-aqua-
Externí odkaz:
https://doaj.org/article/2f0e4f8e464342d8b04dd25c0f902ce4
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 72, Iss 5, Pp 751-755 (2016)
In the structure of the brucinium salt of 4-aminophenylarsonic acid (p-arsanilic acid), systematically 2,3-dimethoxy-10-oxostrychnidinium 4-aminophenylarsonate tetrahydrate, (C23H27N2O4)[As(C6H7N)O2(OH)]·4H2O, the brucinium cations form the characte
Externí odkaz:
https://doaj.org/article/e276ef4ff6cb4c76b478be7dc205febf
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 11, Pp 430-434 (2014)
The structures of the 1:1 anhydrous salts of nicotine (NIC) with 3,5-dinitrosalicylic acid (DNSA) and 5-sulfosalicylic acid (5-SSA), namely (1R,2S)-1-methyl-2-(pyridin-3-yl)-1H-pyrrolidin-1-ium 2-carboxy-4,6-dinitrophenolate, C10H15N2+·C7H3N2O7−,
Externí odkaz:
https://doaj.org/article/8798c0a076fb4bd2baccb9c5f0091fb8
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
IUCrData, Vol 1, Iss 12, p x161985 (2016)
In the structure of the complex salt formed from the reaction of manganese(II) acetate with (4-aminophenyl)arsonic acid (p-arsanilic acid), [Mn(H2O)6](C6H7AsNO3)2·4H2O, the centrosymmetric Mn(H2O)6 coordination polyhedron has slightly distorted octa
Externí odkaz:
https://doaj.org/article/1d9a8aa1696b497aaa8a447fa4d40221
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 1, Pp o37-o37 (2014)
In the title p-toluenesulfonate salt of the drug dapsone, C12H13N2O2S+·C7H7O3S−, the dihedral angle between the two aromatic rings of the dapsone monocation is 70.19 (17)° and those between these rings and that of the p-toluenesulfonate anion are
Externí odkaz:
https://doaj.org/article/1cda0f5b898e49d5bbde9a8e6bf1f675
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 10, Pp o1546-o1546 (2013)
In the title salt C7H10NO+·C8H3Cl2O4− the benzene rings of the cation and anion are essentially parallel [inter-ring dihedral angle 4.8 (2)°]. In the anion the carboxylic acid and carboxylate groups make dihedral angles of 19.0 (2) and 79.5 (2)°
Externí odkaz:
https://doaj.org/article/eef556cf26114a88a34674505ce3cf03
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 4, Pp o472-o472 (2013)
In the structure of the phenolate salt of the sulfa drug sulfamethazine with 3,5-dinitrosalicylic acid, C12H15N4O2S+·C7H3N2O7−, the dihedral angle between the pyrimidine and benzene rings of the cation is 59.70 (17)°. In the crystal, cation–ani
Externí odkaz:
https://doaj.org/article/328c46bb981f485b9a762f2bc3ec93fb
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 2, Pp o234-o234 (2013)
In the asymmetric unit of the title co-crystal, C12H14N4O2S·C7H5NO4, the sulfamethazine and 2-nitrobenzoic acid molecules form a heterodimer through intermolecular amide–carboxylic acid N—H...O and carboxylic acid–pyrimidine O—H...N hydrogen
Externí odkaz:
https://doaj.org/article/bc799714c21e4eada2a06c719014b663
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 2, Pp o206-o206 (2013)
In the title salt, C12H11N2O2+·C7H5O6S−, the dihedral angle between the benzene and pyridine rings in the 4-(4-nitrobenzyl)pyridinium cation is 82.7 (2)°. Within the anion there is an intramolecular hydroxy-O—H...O(carboxylic acid) bond. In the
Externí odkaz:
https://doaj.org/article/704a3f79716a49a29693b81731fe3d4f
Autor:
Graham Smith, Urs D. Wermuth
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 6, Pp o1649-o1650 (2012)
In the asymmetric unit of the title co-crystal, C7H5NO4·C12H14N4O2S, there are two independent but conformationally similar heterodimers, which are formed through intermolecular N—H...Ocarboxy and carboxyl–pyrimidine O—H...N hydrogen-bond pair
Externí odkaz:
https://doaj.org/article/d4cb3fc54ce94094b2313797826e47dc