Crystal structure of tetraoxa[4]peristylane: Novel CH…O mediated architecture in the solid state

Abstract In the crystal, the molecules of ‘oxa-bowl’ 3 are interconnected in rim-up, rim-down fashion through an extensive network of C(sp 3 )H…O hydrogen bonds involving even a non acidic cyclobutane ring hydrogen, leading to a multi-columnar arrangement of bowls and a 3D interpenetrating CH…O net.