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Control of channel shapes in a microporous manganese(II)-borophosphate framework by variation of size and shape of organic template cations

机译:通过改变有机模板阳离子的大小和形状来控制微孔锰-硼磷酸盐骨架中的通道形状

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摘要

The templated microporous compounds [H-2(Templ.)][Mn-II-{B2P3O12(OH)}], [templates: 1,3-diaminopropane, C(3)Hi(10)N(2) (DAP); piperazine, C4H10N2 (PIP); 1,4-diazacyclo[2.2.2]octane, C6H12N2 (DABCO)] were prepared under mild hydrothermal conditions. The crystal structures (H(2)DAP-Mn: Pmc2(l) (no. 26), a = 1259.43(5), b = 949.86(5), c = 1135.92(5) pm, Z = 4; H2PIP-Mn: Ima2 (no. 46), a = 1257.9(1), b = 948.69(8), c = 1158.19(8) pm, Z = 4; H,DABCO-H2PIP-Mn: Ima2 (no. 46) a = 1262.90(7), b= 961.05(5) c = 1151.42(7) pm, Z = 4) are characterized by identical framework connectivities [MnII{B2P3O12(OH)}](2-), but vary in shapes (diameters) of the structural channels depending on the shapes of the templating molecule ions. The situation clearly reflects the directing effect of true templates during endo-templating reactions. The experimental results (preparation, chemical analyses, and X-ray refinements) are supported by detailed ab initio calculations (structure optimizations).
机译:模板化的微孔化合物[H-2(Templ。)] [Mn-II- {B2P3O12(OH)}],[模板:1,3-二氨基丙烷,C(3)Hi(10)N(2)(DAP) ;哌嗪,C4H10N2(PIP); 1,4-二氮杂环[2.2.2]辛烷,C6H12N2(DABCO)]是在温和的水热条件下制备的。晶体结构(H(2)DAP-Mn:Pmc2(l)(第26号),a = 1259.43(5),b = 949.86(5),c = 1135.92(5)pm,Z = 4; H2PIP- Mn:Ima2(编号46),a = 1257.9(1),b = 948.69(8),c = 1158.19(8)pm,Z = 4; H,DABCO-H2PIP-Mn:Ima2(编号46)a = 1262.90(7),b = 961.05(5)c = 1151.42(7)pm,Z = 4)具有相同的骨架连接性[MnII {B2P3O12(OH)}](2-),但形状(直径)不同)取决于模板分子离子的形状。这种情况清楚地反映出内模板反应期间真实模板的指导作用。详细的从头计算(结构优化)为实验结果(制备,化学分析和X射线精细化)提供了支持。

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