Figure 1
The structure of (I ), showing the role of the [BeF4]2− anion in hydrogen-bond formation (dashed lines). Displacement ellipsoids are drawn at the 50% probability level. H atoms connected to the C atoms of symmetry-related cations have been omitted for clarity, while the remaining H atoms are shown as open circles. The labelling scheme encompasses all non-H atoms of the asymmetric unit and selected other atoms [symmetry codes: (i) − x, y − , − z; (ii) + x, − y, z − ; (iii) − x, y − , − z; (iv) + x, − y, + z; (v) 1 + x, y, z]. |