Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Frank Eissmann"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 6, Pp 751-754 (2019)
The diphenylethyne unit of the title molecule, C24H24N2O6, deviates slightly from planarity. The l-alanine moieties adopt distorted helical conformations of opposite winding direction. Infinite ribbons of N—H...O=C-connected molecules represent the
Externí odkaz:
https://doaj.org/article/8fed8860c6704d4da237ac939e13608e
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 9, Pp o2542-o2543 (2011)
In the main molecule of the title compound, C13H11N2O3+·ClO4−, the two aromatic rings are twisted by 56.19 (3)° relative to each other and the nitro group is not coplanar with the benzene ring [36.43 (4)°]. The crystal packing is dominated by in
Externí odkaz:
https://doaj.org/article/d72f65d9c5dd439daa5d6bc5c6d196e6
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 7, Pp o1622-o1622 (2011)
The crystal structure of the title compound, C10H10O3, is characterized by classical intramolecular hydrogen bonding. The hydroxy group is disordered over two positions (77 and 23%). The crystal structure is stabilized via π–π [3.5986 (1) Å] and
Externí odkaz:
https://doaj.org/article/c9e5d9e122264b43a4a25ed8c654fb55
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 6, Pp o1419-o1419 (2011)
There are two molecules in the asymmetric unit of the title compound, C14H6F6O2, in which the azulene systems possess an almost planar geometry with maximum deviations of 0.0438 (15) and 0.0396 (14) Å. Besides intra- and intermolecular C—H...O and
Externí odkaz:
https://doaj.org/article/f147e8459f83477895e89939a9f112af
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 7, Pp o1866-o1866 (2010)
The molecular structure of the title compound, C12H14O2, features a nearly coplanar arrangement including the aromatic ring, the C[triple-bond]C—C group and the ether O atom. The maximum deviation from the least-squares plane of these ten atoms is
Externí odkaz:
https://doaj.org/article/76889f1497d143acba011169703846ab
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 3, Pp m279-m279 (2010)
The asymmetric unit of the title complex, [Co(DMF)6](ClO4)2 (DMF = N,N-dimethylformamide, C3H7NO), consists of two half complex cations with the Co2+ metal ions located on centers of inversion and two perchlorate anions. In the crystal packing, each
Externí odkaz:
https://doaj.org/article/fb9779aaca3b4f4284278c6c34a75ad6
Publikováno v:
CrystEngComm. 16:3730-3736
A rather easily structured permethylated dinitro calix[4]arene was found to exhibit large, stable and rigid channels in the solid state. These were obtained as guest free as well as solvent filled species and proved to reversibly adsorb selected orga
Autor:
Torsten Hahn, Frank Eißmann, Jens Kortus, Simon Liebing, Claudia Loose, Christian Röder, Wilhelm Seichter, Edwin Weber, Sebastian Förster
Publikováno v:
Journal of Physical Organic Chemistry. 25:856-863
Four new azulene derivatives featuring two π-conjugated and sulfur terminated rigid side arms in the 1,3-positions of the azulene core were designed, synthesized, and characterized. The syntheses were carried out on the basis of a palladium cross-co
Autor:
Frank Eißmann, Edwin Weber
Publikováno v:
Journal of Molecular Structure. 1005:121-128
A series of N-(p-ethynylbenzoyl) derivatives (1–4) of the amino acids glycine and l -alanine as well as the dipeptides glycylglycine and l -alanylglycine has been synthesized via a two-step reaction sequence including the reaction of an appropriate
Autor:
Edwin Weber, Frank Eißmann
Publikováno v:
Journal of Molecular Structure. 994:392-402
Using a sequence of activation, blocking and peptide coupling procedures, a series of ten amino acid and peptide derivatives 1–6 (a, b, respectively) featuring a p-bromobenzoyl substituent attached to the amino group of the parent compound has been