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pro vyhledávání: '"Peter G. Jones"'
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 58:o665-o668
In the isomeric title compounds, viz. 2-, 3- and 4-(chloromethyl)pyridinium chloride, C(6)H(7)ClN(+).Cl(-), the secondary interactions have been established as follows. Classical N-H.Cl(-) hydrogen bonds are observed in the 2- and 3-isomers, whereas
Autor:
Peter G. Jones, Matthias Freytag
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 55:1682-1685
The title compound, C 5 H 5 ClNO +. Cl -. H 2 O, shows typical features of pyridinium cations (i.e. wider angles at nitrogen and narrower angles at C-2 and C-6 than in unprotonated pyridines). Short C-Cl and C-O bonds may indicate mesomeric stabiliza
Autor:
Peter G. Jones, Virginia Lozano
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 60:o653-o655
The title compounds, C 7 H 8 Cl 2 N + .Cl - and C 7 H 8 Br 2 N + .Br - , are isomorphous. In the crystal packing, layers parallel to the ac plane are formed by a classical N + -H...X - hydrogen bond (X = halogen) and two X...X contacts. A third X...X
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 54:820-822
The title compound, C 11 H 8 N 4 , exists as the NH tautomer (a 1,2-dihydropyridine) in the solid state, although the bond-length differences in the ring are minimal (thus implying delocalized multiple bonding). Molecules are linked in pairs by N-H..
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 53:781-783
The molecule of the previously unknown title compound, N,N-dimesyloxamoyl chloride, C4H6ClNO6S2, is characterized by a long Csp2—Nsp2 bond [1.408 (2) A] and a skew conformation of the oxalyl subunit [torsion angle O—C—C—O 130.7 (2)°]. The mo
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 44:1198-1200
Cristallisation dans C 2/C avec affinement jusqu'a 0,051. La structure est constituee de deux types de couches: les trois atomes de plomb independants sont coordinnes aux ions chlorures et acetates en formant des couches qui sont reliees par les ions