Crystallisation of 1,6-bis(4-pyridyl)hexane (Py2C6H12) with copper nitrate gives two different phases. Phase I of composition [Cu(Py2C6H12)(3)(NO3)(2)].2[Cu(Py2C6H12)(2)(H2O)(NO3)].2(NO3). EtOH consists of two different infinite chains in a 1:2 ratio that are interlocked. Hydrogen bonds link chains I to II and chains II to II. In contrast phase 2 of composition [Cu-2(Py2C6H12)(4)(H2O)(2)]. (NO3)(4). (Py2C6H12). (EtOH).2(H2O) is based upon an infinite 3D framework. It consists of four interpenetrating 3D networks that are crystallographically equivalent. (C) 2001 Elsevier Science Ltd. All rights reserved.
- crystal engineering