摘要
Three novel amino acid salts of 12-molybdosilicate formulated （Gly）6H4SiMo12O40·8H2O 1, K3（HGly）SiMol2O40·4H2O 2 and K2（HGly）2SiMo12O40·9H2O 3 （Gly = NH3CH2COO） were synthesized and characterized by elemental analysis, IR and single-crystal X-ray analysis. Compound 1 crystallizes in trigonal, space group R-3 with a = 17.0742（3）, b = 17.0742（3）, c = 16.792（4）A°, γ = 120°, F（000） = 3474, Mr = 2413.92, Z = 3, V = 4239.4（14）A°^3, Dc = 2.837 g/cm^3,μ（MoKα） = 2.728 mm^-1, the final R = 0.0622, wR = 0.1549 （I 〉 2σ（I）） and GOF = 1.143. In compound 1, each [SiMo12O40]^4- unit is surrounded by six Gly molecules through hydrogen bonding. Compounds 2 and 3 crystallize in monoclinic, space groups P21c and P21/c, respectively. The pH value of the reaction media plays a crucial role in the formations of the three compounds.
Three novel amino acid salts of 12-molybdosilicate formulated （Gly）6H4SiMo12O40·8H2O 1, K3（HGly）SiMol2O40·4H2O 2 and K2（HGly）2SiMo12O40·9H2O 3 （Gly = NH3CH2COO） were synthesized and characterized by elemental analysis, IR and single-crystal X-ray analysis. Compound 1 crystallizes in trigonal, space group R-3 with a = 17.0742（3）, b = 17.0742（3）, c = 16.792（4）A°, γ = 120°, F（000） = 3474, Mr = 2413.92, Z = 3, V = 4239.4（14）A°^3, Dc = 2.837 g/cm^3,μ（MoKα） = 2.728 mm^-1, the final R = 0.0622, wR = 0.1549 （I 〉 2σ（I）） and GOF = 1.143. In compound 1, each [SiMo12O40]^4- unit is surrounded by six Gly molecules through hydrogen bonding. Compounds 2 and 3 crystallize in monoclinic, space groups P21c and P21/c, respectively. The pH value of the reaction media plays a crucial role in the formations of the three compounds.
基金
This work was supported by the National Natural Science Foundation of China (50472021) and the "One-hundred Talent "Project from the Chinese Academy of Sciences
