Poly[[(acetonitrile)lithium(I)]-l3-tetra- fluoridoborato]

R factor = 0.045; wR factor = 0.118; data-to-parameter ratio = 28.2. The structure of the title compound, [Li(BF4)(CH3CN)]n, consists of a layered arrangement parallel to (100) in which the Li+ cations are coordinated by three F atoms from three tetrafluoridoborate (BF4 ) anions and an N atom from an acetonitrile molecule. The BF4 anion is coordinated to three different Li+ cations though three F atoms. The structure can be described as being built from vertex-shared BF4 and LiF3(NCCH3) tetrahedra. These tetrahedra reside around a crystallographic inversion center and form 8-membered rings. Related literature For related compounds containing Li(BF4), see: Andreev et al