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Whole-genome ancestry of an Old Kingdom Egyptian

Provenance and ethics The human remains were excavated from the Nuwayrat necropolis near Beni Hasan, Egypt. They were donated between 1902 and 1904 by the Egyptian Antiquities Service to the members of the Beni Hasan excavation committee and subsequently donated to the Institute of Archaeology, University of Liverpool and exported under the John Garstang export permit. The human remains were then donated to the World Museum (previously the Liverpool City Museum) in 1950. Sampling permit was gra

Preparation of a neutral nitrogen allotrope hexanitrogen C2h-N6

As AgN 3 is an excellent reagent for the synthesis of polyazides35 and halogen azides both in the gas phase36 and in solution37,38, we suggest that the reaction of AgN 3 with XN 3 (X = halogen) is a viable route to N 6 (Fig. 1b). The reactions were conducted in either a quartz tube or a U-trap by flowing gaseous Cl 2 through solid AgN 3 under reduced pressure at room temperature (see the ‘Synthesis details’ section in Methods and Supplementary Fig. 1). Apart from the known bands of ClN 3 (ref. 3