Fig. 1 | Nature Communications

Fig. 1

From: High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions

Fig. 1

Fragments of the crystal structure of Re2(N2)(N)2 at ambient conditions. Re atoms–grаy, N1 atoms–blue, N2 atoms–red. ReN2 crystallizes in the space group P21/c (No. 14) with a = 3.6254(17), b = 6.407(7), c = 4.948(3) Å, β = 111.48(6)°. Rhenium and nitrogen atoms occupy Wyckoff Positions 4e: Re [0.35490(11), 0.34041(8), 0.19965(8)], N1 [0.194(2), 0.038(2), 0.311(19)], N2 [0.259(3), 0.6381(18), 0.024(2)]. Full crystallographic information is given in the supplementary crystallographic information file and in the Supplementary Tables 2 and 3. a The projection of the crystal structure along the b-axis. b, c Fragments of the crystal structure of ReN2 showing how ReN7 polyhedra are connected with each other. d Separate ReN7 coordination polyhedron. e Coordination of N2 atoms. f Coordination of N1–N1 dumbbells

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