2-(Benzofuran-2-yl)-2-oxoethyl 2-chlorobenzoate, C17H11ClO4 (I), and
2-(benzofuran-2-yl)-2-oxoethyl 2-methoxybenzoate, C18H14O5 (II), were synthesized
under mild conditions. Their chemical and molecular structures were
analyzed by spectroscopic and single-crystal X-ray diffraction studies,
respectively. These compounds possess different ortho-substituted functional
groups on their phenyl rings, thus experiencing extra steric repulsion force
within their molecules as the substituent changes from 2-chloro (I) to 2-methoxy
(II). The crystal packing of compound (I) depends on weak intermolecular
hydrogen bonds and – interactions. Molecules are related by inversion into
centrosymmetric dimers via C—H  O hydrogen bonds, and further strengthened
by – interactions between furan rings. Conversely, molecules in
compound (II) are linked into alternating dimeric chains propagating along the
[101] direction, which develop into a two-dimensional plate through extensive
intermolecular hydrogen bonds. These plates are further stabilized by – and
C—H   interactions.

Title

Acta Crystallographica Section E: Crystallographic Communications

Publisher

International Union of Crystallography

Publisher Country

Palestine

Indexing

Scopus

Impact Factor

None

Publication Type

Prtinted only

Volume

73

Year

2017

Pages

1227-1231