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合成了混合价钨钼混配杂多化合物 [C1 0 H1 0 N]4 PMo9W3O4 0 · 2 DMF,晶体属单斜晶系 ,空间群 P2 1 /n,a=1 .490 6(4 ) nm,b=1 .2 496(1 ) nm,c=1 .765 2 (5 ) nm,β=98.1 6(1 )°,V=3 .2 5 47(1 3 ) nm3,Z=2 ,Dc=2 .791 Mg/m3,Mr=2 73 5 .84,最终偏离因子 R=0 .0 5 3 1 ,Rw=0 .1 3 62 .晶体结构研究表明 ,钨原子取代钼以后阴离子中所有键长均有不同程度的改变 ,PO4 四面体畸变增大 .ESR研究表明 ,还原电子在钼原子间离域且其离域程度随温度降低而减弱 ;非线性光学性质测定显示化合物具有三阶非线性光学性质 ,χ( 3) =1 .48×1 0 - 1 3esu
The mixed valence tungsten-molybdenum mixed heteropoly compound [C1 0 H1 0 N] 4 PMo9W3O4 0 · 2 DMF was synthesized. The crystal belongs to the monoclinic system with space group P2 1 / n, a = 1.490 6 (4) nm, b = 1 .2 496 (1) nm, c = 1.765 2 (5) nm, β = 98.1 6 (1) °, V = 3.2547 (1 3) nm3, Z = 2, Dc = 2 .791 Mg / m3, Mr = 2 73 5 .84, the final deviation factor R = 0 .0 5 3 1, Rw = 0 .1 3 62. Crystal structure studies have shown that all tungsten atoms in the anion after substituting molybdenum And the PO4 tetrahedron distortion increases.ESR studies show that the reduction of electrons in the molybdenum atoms away from the domain and its degree of delocalization decreases with temperature decreases; nonlinear optical properties of the compounds showed the third-order nonlinear optical Properties, χ (3) = 1.48 × 10 - 1 3 esu