Crystal and Molecular Structure of Diboron Tetrafluoride, B2F4

X-ray diffraction study of a single crystal of B2F4 indicates a planar, centrosymmetric molecule with B–B=1.67±0.045 A, B–F=1.32±0.035 A and angle F–B–F=120°. There are two molecules in a monoclinic unit cell of symmetry P21/n and parameters of a=5.49, b=6.53, c=4.83, and β=102.5°.