Inorganic Chemistry, Vol.41, No.3, 452-454, 2002
Novel acetate polyoxomolybdate "host" accommodating a zigzag-chainlike "guest" of five edge-shared sodium cations: Na-21{[Na-5(H2O)(14)]subset of[Mo46O134(OH)(10)(mu-CH3COO)(4)]}center dot CH3COONa center dot approximate to 95H(2)O
A novel ESR-silent polyoxomolybdate Na-21{[Na-5(H2O)(14)]subset of[Mo-20(V)-(Mo26O134)-O-VI(OH)(10)(mu-CH3COO)(4)]}(.)CH(3)COONa(.)approximate to90H(2)O (3) was simply synthesized in high yield by reducing an acidified aqueous solution of Na(2)MoO(4)(.)2H(2)O and CH(3)COONa(.)3H(2)O. The structure of 3 is constructed by a 46-member crown-shaped anion, [Na-5(H2O)(14)]subset of[(Mo20Mo26O134)-Mo-V-O-VI(OH)(10)(mu-CH3COO)(4)](21-), 3a, which is built up by three different but related building blocks in a new mode and further connected into layers via Na+ and hydrogen bonds. Crystal data of compound 3: triclinic space group P(-1); a = 16.4065(3), b = 17.4236(2), c = 20.8247(3) Angstrom; alpha = 87,57, beta = 67.9810(10), gamma = 80.6970(10)degrees; V = 5445.08(14) Angstrom(3); Z = 1; D-calcd = 2.902. Structure solution and refinement are based on 19 014 reflections, R = 0.0750.