Anion influences on the construction of one-dimensional structures of the Cu(II)–bisterpy family (bisterpy=2,2′:4′,4″:2″,2‴-quarterpyridyl, 6′,6″-di-2-pyridiine)

The hydrothermal reactions of M(II) salts with 2,2′:4′,4″:2″,2‴-quaterpyridyl, 6′,6″-di-2-pyridine (bisterpy) in the presence of a variety of anionic subunits have been investigated. The compounds [Cu2(bisterpy)(H2O)2Cl2]Cl2 (1), [Cu2(bisterpy)Br4] (2), and [Cu2(bisterpy) (NO3)4]·2H2O (3·2H2O) are molecular. In contrast, [Cu2(bisterpy)Cl2(PF6)] (4), [Mn2(bisterpy)(SO4)2] (5), [Zn2(bisterpy)(SO4)2] (6), [Cu2(phbisterpy)(SO4)2]·2H2O (7·2H2O), [Cu2(bisterpy)(MoO4)2] (8), [Zn2(bisterpy)(MoO4)2] (9), [Cu2(bisterpy)(H2O)2(SO4)] [Mo4O13]·1.25H2O (10·1.25H2O) and [Cu2(bisterpy)Mo8O26]·2H2O (11·2H2O) are one-dimensional materials. The structural evolution of the molybdate series 8, 10, and 11 illustrates the profound influence of hydrothermal reaction conditions on product identity and architecture. The (PF6)− bridged solid 4 is mixed valence Cu(I)/Cu(II), a feature consistent with the magnetic properties of this material.