Exo-metal coordination by a tricyclic [{P((mu)-N-2-NC5H4)}2((mu)-O)]2 dimer in [{P((mu)-N-2-NC5H4)}2((mu)-O)]2{CuCl·(C5H5N)2}4 {2-NC5H4= 2-pyridyl, C5H5N = pyridine)

The in situ reaction of the phosphazane dimer [ClP((mu)-N-2-NC5H4)]2(2) with CuCl in the presence of C5H5N/H2O gives the title complex [{P((mu)-N-2NC5H4)}2((mu)-O)]2{CuCl·(C5H5N)2}4(1), containing a tricyclic [{P((mu)-N-2-NC5H4)}2((mu)-O)]2 ligand which is isoelectronic with species of the type [{P ((mu)-NR)}2NR]2.