Table 4. Crystal packing characteristics, components of lattice energy and total lattice energy (kJ mol⁻¹).

	I	II
Cell volume, Å	2694.5 (10)	1294.2 (9)
Density, g cm−3	1.406	1.464
Packing coefficient	0.739	0.771
Coulombic	−29.9	−35.5
Polarization	−40.2	−40.2
Dispersion	−147.4	−144.1
Repulsion	64.8	67.4
Total	−152.6	−152.3