AgNO 3. C6H~2N 4 is orthorhombic, space group Pnma with a unit cell a = 13.832 (7), b = 6.535 (4) and and Z = 4. The structure was refined by a full-matrix least-squares technique to a final R = 0.045 for 807 independent reflections measured on an automatic diffractometer. It is made up of sheets which contain • .• Ag-hexamethylenetetramine-Ag-hexamethylenetetramine.., chains and which are parallel to the (100) plane. In each sheet, the chains are linked to one another through Ag-N bonds. Each Ag atom is surrounded by three N atoms which belong to three C6H~2N 4 molecules and two O atoms of a nitrate group. Moreover, a C6H~2N 4 molecule links three Ag atoms. The NO 3 group occupies two positions in statistical disorder. Interatomic distances and bond angles are in good agreement with previously published values. Cohesion between sheets is due to van der Waals interactions.
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