共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
3.
4.
5.
Jonathan C. Collings Andrei S. Batsanov Judith A. K. Howard Todd B. Marder 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(7):870-872
The structure of the title complex, C10F8·C14H10, comprises mixed stacks of alternating diphenylacetylene and octafluoronaphthalene molecules, both lying at inversion centres and parallel to within 8.6 (1)°, in contrast with the herring‐bone packing observed in crystals of either pure component. 相似文献
6.
7.
8.
Katarzyna A. Solanko Artem O. Surov German L. Perlovich Annette Bauer‐Brandl Andrew D. Bond 《Acta Crystallographica. Section C, Structural Chemistry》2012,68(11):o456-o458
The title compound, C18H19Cl2NO4·C6H12N2·H2O, is a cocrystal hydrate containing the active pharmaceutical ingredient felodipine and diazabicyclo[2.2.2]octane (DABCO). The DABCO and water molecules are linked through O—H...N hydrogen bonds into chains around 21 screw axes, while the felodipine molecules form N—H...O hydrogen bonds to the water molecules. The felodipine molecules adopt centrosymmetric back‐to‐back arrangements that are similar to those present in all of its four reported polymorphs. The dichlorophenyl rings also form π‐stacking interactions. The inclusion of water molecules in the cocrystal, rather than formation of N—H...N hydrogen bonds between felodipine and DABCO, may be associated with steric hindrance that would arise between DABCO and the methyl groups of felodipine if they were directly involved in hydrogen bonding. 相似文献
9.
10.
11.
12.
13.
14.
15.
16.
Christopher B. Perry Manuel A. Fernandes Helder M. Marques 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(4):m165-m167
The title compound, [Co(C5H11)(C62H88N13O14P)]·0.385C3H6O·12.650H2O, contains the isoamyl (3‐methylbutyl) anion bonded to the CoIII ion through a C atom. The compound is thus a structural analog of the two biologically important vitamin B12 coenzymes adenosylcobalamin and methylcobalamin. The lower axial Co—N bond length [2.277 (2) Å] is one of the longest ever reported for a cobalamin and reflects the strong σ‐donor ability of the isoamyl group. 相似文献
17.
Orhan Büyükgüngr Mustafa OdabasÛoglu 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(11):o691-o692
In the title compound, 2C5H7N2+·C4H4O42?·C4H6O4, cyclic eight‐membered hydrogen‐bonded rings exist involving 2‐aminopyridinium and succinate ions. The succinic acid and succinate moieties lie on inversion centres. Succinic acid molecules and succinate ions are linked into zigzag chains by O—H?O hydrogen bonds, with O?O distances of 2.6005 (16) Å. 相似文献
18.
19.