Table 1. NaK2K room-temperature neutron and X-ray data-collection statistics.

	X-ray	Neutron
Unit-cell parameters (Å, °)	a = 67.86, b = 67.86, c = 92.03, α = β = γ = 90
Space group	I4
Estimated twin fraction	0.3
Wavelength(s) (Å)	1.00	2–4
No. of unique reflections	7400 (725)	2510 (235)
Resolution range (Å)	16.72–2.50 (2.59–2.50)	13.68–3.55 (3.68–3.55)
Multiplicity	4.93	3.56 (3.31)
〈I/σ(I)〉	8.9 (2.1)	11.8 (3.60)
R merge	0.114 (0.615)	0.176 (0.300)
CC1/2	0.995 (0.845)	0.955 (0.497)
R p.i.m.	0.057 (0.313)	0.105 (0.173)
Data completeness (%)	99.42 (100)	95.33 (93.63)