Two new octamolybdate-based hybrids constructed by dinuclear/tetranuclear metal-tetrazole clusters: Syntheses, structures and photoluminescence

Through hydrothermal reactions of d0 metal ions with 5-(4-imidazol-1-yl-phenyl)-2H-tetrazole (HL), two new octamolybdate-based hybrids, namely, (H2L)2[Ag2(HL)2(β-Mo8O26)] (1) and [Cu4(HL)4(θ-Mo8O26)] · 5H2O (2), have been prepared and structurally characterized. X-ray single-crystal analyses show that compound 1 consists of discrete H2L cations and infinite one-dimensional (1D) anionic chains [Ag2(HL)2(β-Mo8O26)]2 − constructed by [β-Mo8O26]4 − bridged via dinuclear clusters {Ag2(HL)2}2 +. Compound 2 displays a 2D network generated by 1D cationic tetranuclear copper cluster chains {Cu4(HL)4}n and [θ-Mo8O26]4 − clusters. In addition, luminescent properties of both compounds have been studied.