Fj. Disalvo et al., THE CRYSTAL-STRUCTURE OF SR6CU3N5 WITH ISOLATED, BENT (CU-2(I)N-3)(7-) AND THE SINGLE-CRYSTAL STRUCTURAL DETERMINATION OF SRCUN, Journal of alloys and compounds, 255(1-2), 1997, pp. 122-129
Single crystals of the ternary nitrides Sr6Cu3N5 and SrCuN were prepar
ed in high pressure autoclaves at 800 degrees C. Tetragonal crystals o
f the nitridocuprate, Sr6Cu3N5 crystallized in space group P4(2)mc (no
. 105), a=8.649(1) Angstrom, c=7.325(1) Angstrom. This compound repres
ents a new structure type characterized by a mixture of linear ((CuN2)
-N-I)(5-) and unprecedented V-shaped ((Cu2N3)-N-I)(7-) nitridometallat
e anions. The crystal structure of SrCuN was confirmed by single cryst
al data to adopt the BaNiN structure type (Pnma (no. 62), a=9.045(2),
b=13,234(3), c=5.388(1) Angstrom; Z=12).