Crystallization of 4,4′-biphenyldicarbonitrile with silver(<scp>I</scp>) salts: a change in topology concomitant with a change in counterion leading to a ninefold diamondoid network

The preparation and X-ray crystal structures of two coordination networks [Ag(BPCN)(CF3SO3)]·C6H61 and [Ag(BPCN)2]PF6 2 (BPCN = 4,4′-biphenyldicarbonitrile) are described; 1 consists of infinite chains; however, 2 exists as a ninefold interpenetrated diamondoid network.