Hybrid polyoxometalate clusters with appended aromatic platforms

Abstract

The assembly of polyoxometalate architectures based on Mn-Anderson clusters capped with different aromatic platforms via the ‘Tris’ linker (Tris = tris(hydroxymethyl)aminomethane), allows the formation and isolation of four new hybrid polyoxometalate clusters of 2–5 with the general composition of [n-N(C₄H₉)₄]₃[MnMo₆O₁₈{(OCH₂)₃CN = CH-R}₂]·solv., (R = –(C₆H₅) 2, –(C₆H₅O) 3, –(C₁₁H₈N) 4 and –(C₁₃H₉) 5; solv. = MeOH or H₂O). These compounds were obtained simply by the reaction of compound 1, ([n–N(C₄H₉)₄]₃[MnMo₆O₁₈{(OCH₂)₃CNH₂}₂]), with the corresponding aldehyde and the aromatic platforms were chosen to explore the design principles for covalently constructed POM aromatic–organic–inorganic hybrids.