Molecular Structure of organic compounds: VSEPR: AXnEm type and π systems: the Oxygen case

O: AX2E2 O: AX2E2 O: AXE2 O: AX2E
Et2O 14dioxane propanone furan

O: bent

O: bent

O: terminal atom

O: bent
Diethyl ether, C4H10O 1,4-dioxane, C4H8O Propanone, C3H6O Furan, C4H4O

All these geometries were theoretically found at the DFT-B3LYP level of theory (6-31G(d,p) basis sets for light atoms and Stuttgart ECPs for the heaviest ones)

See also the Hybrid Orbitals page

More information about VSEPR