title: Crystal structure of 2-(5-meth-oxy-1-benzo-furan-3-yl)acetic acid.
abstract: The benzo-furan residue in the title compound, C11H10O4, is essentially planar (the r.m.s. deviation for the nine non-H atoms = 0.011 Å). While the meth-oxy group is coplanar with the fused ring system [C-C-O-C torsion angle = 3.1 (3)°], the acetic acid residue occupies a position almost prime [C-C-C-C = 77.0 (2)°]. In the crystal, centrosymmetrically related mol-ecules are linked by O-H⋯O hydrogen bonds to form eight-membered {⋯HOCO}2 synthons. The dimeric aggregates assemble into supra-molecular layers in the ab plane via benzene-C-H⋯O(ring) inter-actions.
authors: Department of Physics, Govt. College for Women, Kolar 563 101, Karnataka, India.
authors: Ramakrishna
authors: R
authors: Gowda
authors: Department of Physics, Govt. College for Women, Mandya 571 401, Karnataka, India.
authors: K V Arjuna
authors: KV
authors: Gowda
authors: Department of Physics, Govt. PU College, Jayanagara, Bangalore 560 011, Karnataka, India.
authors: M Keshava
authors: MK
authors: Reddy
authors: Department of Chemistry, P.C. Jabin Science College, Hubli 580 031, Karnataka, India.
authors: Mahantesha
authors: M
authors: Basanagouda
keywords: benzo­furan; crystal structure; hydrogen bonding