Zobrazeno 1 - 10
of 137
pro vyhledávání: '"offset π–π interactions"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 76, Iss 7, Pp 1101-1106 (2020)
In the title compound, C14H18O8, (I), the methoxycarbonyl [–C(=O)OCH3] and the acetic acid [–CH2C(=O)OH] groups are inclined to the benzene ring by 79.24 (11) and 76.71 (13)°, respectively, and are normal to each other with a dihedral angle of 9
Externí odkaz:
https://doaj.org/article/c5c168c5f89945d9a41d4be00df5b3a9
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 76, Iss 7, Pp 1107-1112 (2020)
In the molecule of 6,8-dimethoxy-3-methyl-1H-isochromen-1-one, C12H12O4, (I), the two methoxy groups are directed anti with respect to each other. In the molecule of the brominated derivative, 5-bromo-6,8-dimethoxy-3-methyl-1H-isochromen-1-one, that
Externí odkaz:
https://doaj.org/article/0b4faec8152b4319912d3c20ec7d5f5a
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 76, Iss 3, Pp 404-409 (2020)
The two new tetrakis-substituted pyrazines, 1,1′,1′′,1′′′-(pyrazine-2,3,5,6-tetrayl) tetrakis(N,N-dimethylmethanamine), C16H32N6, (I) and N,N′,N′′,N′′′-[pyrazine-2,3,5,6-tetrayltetrakis(methylene)]tetrakis(N-methylaniline), C3
Externí odkaz:
https://doaj.org/article/e2dabbd699b841759d39a722593e352f
Autor:
Dilovan S. Cati, Helen Stoeckli-Evans
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 76, Iss 3, Pp 332-338 (2020)
The title pyrazine dicarboxamide ligand, N2,N3-bis(quinolin-8-yl)pyrazine-2,3-dicarboxamide (H2L1), C24H16N6O2, has a twisted conformation with the outer quinoline groups being inclined to the central pyrazine ring by 9.00 (6) and 78.67 (5)°, and by
Externí odkaz:
https://doaj.org/article/8efcbc1e097a4acead96e507a5e8882e
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 12, Pp 1947-1951 (2019)
The title triclinic polymorph (Form I) of 1,4-bis([2,2′:6′,2′′-terpyridin]-4′-yl)benzene, C36H24N6, was formed in the presence of the Lewis acid yttrium trichloride in an attempt to obtain a coordination compound. The crystal structure of t
Externí odkaz:
https://doaj.org/article/240a49ec953b4e9a8c344612a1c5ecf4
Autor:
S. N. Sheshadri, C. S. Chidan Kumar, S. Naveen, M. K. Veeraiah, Kakarla Raghava Reddy, Ismail Warad
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 11, Pp 1719-1723 (2019)
The title compound, C15H11NO5, is relatively planar, with the planes of the two aromatic rings being inclined to each other by 3.09 (5)°. In the crystal, molecules are linked by a pair of C—H...O hydrogen bonds, forming inversion dimers, which enc
Externí odkaz:
https://doaj.org/article/0e5aeb7eda5449719ab6ba0bae0da944
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 8, Pp 1123-1127 (2019)
The title compound, C11H8O5·(CH3)2SO, is a new coumarin derivative. The asymmetric unit contains two coumarin molecules (A and B) and two dimethylsulfoxide solvent molecules (A and B). The dihedral angle between the pyran and benzene rings in the ch
Externí odkaz:
https://doaj.org/article/9558e244b31541e4b9468ad24375b260
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 8, Pp 1117-1122 (2019)
The title compounds, 8-amino-6-methyl-3,4-diphenyl-1H-isochromen-1-one, C22H17NO2, (I), and 8-amino-3,4-diethyl-6-methyl-1H-isochromen-1-one, C14H17NO2, (II), are new isocoumarin derivatives in which the isochromene ring systems are planar. Compound
Externí odkaz:
https://doaj.org/article/17de71ea96894cf591cdb3da0c2ffaf1
Autor:
Olesia I. Kucheriv, Diana D. Barakhtii, Sergey O. Malinkin, Sergiu Shova, Il'ya A. Gural'skiy
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 8, Pp 1149-1152 (2019)
In the title polymeric complex, {[Fe(CN)2(C10H8N2)2(H2O)2][Au(CN)2]}n, the FeII ion, which is located on a twofold rotation axis, has a slightly distorted FeN4O2 octahedral geometry. It is coordinated by two phenylpyrazine molecules, two water molecu
Externí odkaz:
https://doaj.org/article/fe34a62e98f74354ad9499e10984391e
Autor:
Dilovan S. Cati, Helen Stoeckli-Evans
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 6, Pp 755-761 (2019)
The title tridentate ligand, C14H10N4O, N-(quinolin-8-yl)pyrazine-2-carboxamide (HL1), crystallizes with three independent molecules (A, B and C) in the asymmetric unit. All three molecules are relatively planar (r.m.s. deviations are 0.068, 0.055 an
Externí odkaz:
https://doaj.org/article/08fabf78e97d41b684218dfc4d3097f0