A novel molybdenum-oxide-based metal–organic hybrid compound with 3-fold interpenetrated topology

A novel complex {[Cu12(4,4´-bpz)12(H2Mo8O28)3/2(Mo8O26)3/2]·3(H3O)}n (1) has been hydrothermally synthesized from the self-assembly of CuSO4, H2MoO4 and 4,4´-H2bpz [4,4´-bpz = 3,3´,5,5´-tetramethyl-substituted 4,4´-bipyrazole] and H2O. Its structure is composed of rare (CuL)∞ castellated chains that are linked by two kinds of molybdenum-oxide clusters to form an unusual two dimensional 3-fold interpenetrated structure. Photoluminescent investigation reveals that the title complex displays a strong blue-light emission.