Aqua­tri­fluorido­boron–1,3-dioxolan-2-one (1/2)

The crystal structure of the co-crystal of aqua­tri­fluorido­boron with two ethyl­ene carbonate (systematic name: 1,3-dioxolan-2-one) mol­ecules, BF(3)H(2)O·2OC(OCH(2))(2), was determined by low-temperature single-crystal X-ray diffraction. The co-crystal crystallizes in the ortho­rhom­bic space group P2(1)2(1)2(1) with four formula units per unit cell. The asymmetric unit consists of an aqua­tri­fluorido­boron mol­ecule and two ethyl­ene carbonate mol­ecules, connected by O—H⋯O=C hydrogen bonds. This crystal structure is an inter­esting example of a superacidic BF(3)H(2)O species co-crystallized with an organic carbonate. [Image: see text]