CRYSTAL AND MOLECULAR STRUCTURE OF SILVER PERCHLORATE-ADIPONITRILE (AGCLO4.2NC(CH2)4CN)

The structure of AgClO4.2NC(CH2)4CN, silver perchlorate-adiponitrile, has been determined by an X-ray diffraction study. The crystals are tetragonal, with a = 9.07 Å, c = 10.27 Å, and space group P̅421c. d(obsd) is 1.65 g cm-3 and d(calcd) is 1.66 g cm-3 on the basis of two formula Units per unit cell. The intensities of 327 independent reflections of which 194 were treated as observed were recorded with a diffractometer. The structure has been refined with a block-diagonal least-squares refinement to a conventional R of 4.6%. The structure is in the form of a two-dimensional polymer with the adiponitrile acting as a bridging ligand between the silver ions. Both Ag(I) and Cl- are in special positions having ̅4 symmetry. The silver ion is tetrahedrally coordinated with four nitrile moieties per silver ion. The oxygen atoms of the perchlorate ion are oscillating freely. The chlorine-oxygen distance is 1.45 ± 0.04 Å. The silver-nitrogen distance is 2.28 ± 0.03 Å. The conformation of adiponitrile is GTG. © 1969, American Chemical Society. All rights reserved.