摘要
A transition metal substituted polyoxotungstate, [Cu（en）2（H2O）]2{PW11.5Cu0.5O40[Cu（en）2] }·2H2O1 based on Keggin frameworks, has bccn hydrothcrmally synthesized and characterized by IR, TGA and single-crystal X-ray structural analysis. It is interesting to find that the structure unit contains two different valence cations, narncly, one [Cu（1）（en）2（H2O）]^＋ and one [Cu（2）（en）2（H2O）]^2＋. Data for the crystal： orthorhombic system, space group Pbca, a = 21.585（2）, b = 20.695（2）, c = 26.137（3）A, V = 11675（2）A^3, Z = 8, Mr = 3428.23, Dc = 3.901 g/cm^3, F（000） = 12156,μ（MoKα） = 23.932 mm^-1, the final R = 0.0468 and wR = 0.0969 for 6927 observed reflections （I 〉 2σ（I））.
A transition metal substituted polyoxotungstate, [Cu（en）2（H2O）]2{PW11.5Cu0.5O40[Cu（en）2] }·2H2O1 based on Keggin frameworks, has bccn hydrothcrmally synthesized and characterized by IR, TGA and single-crystal X-ray structural analysis. It is interesting to find that the structure unit contains two different valence cations, narncly, one [Cu（1）（en）2（H2O）]^＋ and one [Cu（2）（en）2（H2O）]^2＋. Data for the crystal： orthorhombic system, space group Pbca, a = 21.585（2）, b = 20.695（2）, c = 26.137（3）A, V = 11675（2）A^3, Z = 8, Mr = 3428.23, Dc = 3.901 g/cm^3, F（000） = 12156,μ（MoKα） = 23.932 mm^-1, the final R = 0.0468 and wR = 0.0969 for 6927 observed reflections （I 〉 2σ（I））.
基金
the Program for New Century Excellent Talent in University of Henan Province
Natural Science Foundation of Henan Province
