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ABSTRACT: The asymmetric unit of the title compound, C(18)H(14)ClNO(3), contains two independent mol-ecules (A and B). In both mol-ecules, the cyclo-hexa-none ring has a chair conformation. The dihedral angles between the pyran ring and the pyridine and chloro-phenyl rings are 2.13?(9) and 2.19?(9)°, respectively, in A, and 0.82?(9) and 1.93?(9)°, respectively, in B. The carbonyl O atoms deviate from the pyran and benzene rings to which they are attached by -0.092?(2) and 0.064?(2)?Å, respectively, in A, and by -0.080?(2) and -0.063?(2)?Å, respectively, in B. In the crystal, the A mol-ecules are linked via C-H?O hydrogen bonds, forming double-stranded chains along [100]. They lie parallel to the double-stranded chains formed by the B mol-ecules, which are also linked via C-H?O hydrogen bonds. The chains stack up the c axis in an -A-A-B-B-A-A- manner, with a number of ?-? inter-actions involving A and B mol-ecules; the centroid-centroid distances vary from 3.4862?(11) to 3.6848?(11)?Å

SUBMITTER: Srinivasan T 

PROVIDER: S-EPMC3569785 | BioStudies | 2013-01-01

REPOSITORIES: biostudies

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