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在半水溶剂热条件下 ,采用不同的合成条件合成了两个锗酸盐微孔分子筛 :(H3O) 4Ge7O16 ·3H2 O和K4 Ge9O2 0 .X射线单晶结构解析表明 ,两个晶体结构具有相同的“火箭状”二级结构单元 (SBU) ,SBU的不同的连接方式导致了完全不同的空间结构 .H4 Ge7O16 ·7H2 O的结晶学数据为Mr=894 2 7,P 43m ,a =0 7730 9( 18)nm ,V =0 462 0 5 ( 19)nm3,Z =1,MoKα ,λ =0 0 710 73nm ,R(F) =3 48% ,wR(F2 ) =8 39% .K4 Ge9O2 0 的结晶学数据为 :Mr=112 9 71,I4( 1) /a ,a =1 5 0 0 2 ( 3)nm ,c =0 7383( 2 )nm ,V =1 6618( 7)nm3,Z =4,MoKα ,R(F) =3 92 % ,wR(F2 ) =11 97% .
Under the condition of semi-aqueous solvothermal, two germanate microporous molecular sieves were synthesized under different synthesis conditions: (H3O) 4Ge7O16 · 3H2O and K4Ge9O2 0. X-ray single crystal structure analysis shows that the two crystal structures have the same (SBU), SBU different connections lead to a completely different spatial structure .H4 Ge7O16 · 7H2 O crystallographic data for the Mr = 894 2 7, P 43m, a = 0 7730 9 (18) nm, V = 0 462 0 5 (19) nm3, Z = 1, MoKα, λ = 0 0 710 73nm, R (F) = 3 48%, wR (F2) = 8 39% The crystallographic data of 0 were: Mr = 112 9 71, I4 (1) / a, a = 15006 nm, c = 0 7383 nm, V = Z = 4, MoKα, R (F) = 3 92%, wR (F2) = 11 97%.