ISSN:
1572-9001
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The crystal and molecular structure of 2-carboxy-2′-methoxybiphenyl has been determined to R=0.035. Crystals are tetragonal, of space group I41cd, witha=b=15.181(2)c=19.874(2) Å. Mean esd values for bond lengths and bond angles are 0.005 Å and 0.3°, respectively. The angle between phenyl rings is 54.5(1)°. The C(1) (carboxy) and O (methoxy) distance is 3.02 Å. Dimers of the title compound are hydrogen bonded with O·O distances of 2.68 Å and 2.58 Å. Due to the symmetry of the space group, the hydrogen atoms are necessarily located in the center of the O·O distance. Parameters of repulsive deformations for bond angles have been defined. Due to overcrowding in the region ofo,o′-substitution, significant deformations of exocyclic bond angles have been observed. The magnitudes of these deformations depend roughly on the spatial requirements of the sterically interacting substituents, expressed by Charton's [1] parameterν.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01374485
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