✍ Scribed by Xuean Chen; Hiroshi Fukuoka; Shoji Yamanaka
No coin nor oath required. For personal study only.
The single crystals of four kinds of metal nitride halides, -M NX (M ؍Zr, Hf; X ؍ Br, I), were prepared in Pt (or Au) capsules by the reaction of M N or -M NX powders with NH 4 X as 6uxes under a high pressure of 3+5 GPa at 1000+11003C. Their crystal structures were determined by single-crystal X-ray di4raction techniques. All four compounds crystallize in a rhombohedral space group R-3m, Z ؍ 6 with a ؍ 3.6403(6) A > , c ؍ 29.270(5) A > for -ZrNBr, a ؍ 3.718(2) A > , c )9(183.13؍ A > for -ZrNI, a ؍ 3.610(1) A > , c ؍ 29.294(6) A > for -HfNBr, and a ؍ 3.689(1) A > , c ؍ 31.329(6) A > for -HfNI. -ZrNBr is isotypic with SmSI and the others are isotypic with YOF. Both structure variants are composed of structural slabs [X+M+N+N+M+X] (M ؍ Zr, Hf; X ؍ Br, I) stacked together by X...X van der Waals forces, but the ways of the layer stacking sequence are di4erent:
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## Abstract The series of supramolecular complexes (Hg~6~As~4~)(CdCl~6~)Hg~0.5~ (1), (Hg~6~As~4~)(HgCl~6~)Hg~0.5~ (2), (Hg~6~As~4~)(CdBr~6~) (3), and (Hg~6~Sb~4~)(CdI~6~)Hg~0.6~ (4) has been prepared by a solid‐state reaction and their crystal structures determined by single‐crystal X‐ray diffracti