Table 1.

Summary of the powder patterns depicted in Figure 1 refinement.

Unit Cell Parameters	Tetragonal *	Orthorhombic **
a, Å	9.2805(7)	9.1133(6)
b, Å	9.2805(7)	14.7708(10)
c, Å	14.6491(13)	4.6893(3)
V, Å3	1261.7(2)	631.23(7)
ρ, g/cm3	1.6557(3)	1.6531(2)
Rwp, %	5.190	8.339
Rbragg, %	3.394	4.537

* The sample depicted in Figure 1a contains 6.4(4)% of the orthorhombic modification. ** Powder pattern is depicted in Figure 1b.