Fabrications of some kinds of 2-D frameworks consisting of nanosized polyoxomolybdate anion [Mo36O112(H2O)(16)](8-) via condensation processes

摘要

We succeeded to prepare novel [Mo36O112(H2O)(16)](8-) ({Mo-36}) compounds by using 1,3-diamino-2-propanol (beta OHC3-DA) and 1,3,5-tris(aminomethyl)benzene (MES-TA) + 1 3-diaminopropane (C-3-DA) as linkers, and determined their crystal structures. We have confirmed they have unique two-dimensional (2-D) molybdenum oxide frameworks, which are formed by condensation Of {Mo-36}(S). Side-staggered arrays of {Mo-36}(S), connected in lying position by eight bridges per a {Mo-36}, are formed in the compound with beta OHC3-DA, while herringbone arrays Of {Mo-36}(S), connected in standing position by four bridges per a {Mo-36}, are built in the compound with MES-TA + C-3-DA. The latter compound exhibited non-stoichiometric property, and its composition and cell parameters varied depending on the relative concentration of MES-TA in the mother solution. (c) 2007 Elsevier Inc. All rights reserved.