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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis and Characterization of Pillared Metal Sulfates (Diamine)MeSO_4, (Me = Zn, Cd)
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Synthesis and Characterization of Pillared Metal Sulfates (Diamine)MeSO_4, (Me = Zn, Cd)

机译:柱状金属硫酸盐(二胺)MeSO_4的合成与表征,(Me = Zn,Cd)

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摘要

Hybrid organic-inorganic materials of the type (diamine)- MeSO_4 (Me = Cd, Zn) [diamine = p-xylylenediamine (PXDA) or mxylylenediamine (MXDA)] have not been described in the literature to date. Four compounds of this type, namely, (MXDA)ZnSO_4 (1), (MXDA)CdSO_4 (2), (PXDA)ZnSO_4 (3), and (PXDA)CdSO_4 (4), were synthesized by solvothermal methods. Since all compounds crystallized as very fine powders, crystal structure studies were performed using powder diffraction methods. All compounds crystallize in the orthorhombic crystal system and the cell parameters are: a = 9.8004(4) ?, b = 10.7829(3) ?, c = 4.88473(19) ? for 1; 9.8824(10), 11.0907(7), 4.9663(5) ? for 2; 9.8496(3), 21.2419(5), 4.89556(17) ? for 3; and 10.1136(4), 21.6625(3), 4.9562(2) ? for 4. The compounds with MXDA as a linker, crystallize in the space group P2_1ma, those with PXDA in Pnma. These hybrid materials are built of inorganic monolayers [-Me-(SO_4)-] joined by organic linkers created by diamines (PXDA or MXDA). Me metal ions and SO_4~(2-) anions form layers with a honeycomb structure. In addition to crystal structure, chemical analyses and SEM investigations were performed. Thermal stability of the compounds was also investigated using TG-DSC methods and XRD as a function of temperature.
机译:(二胺)-MeSO_4(Me = Cd,Zn)[二胺=对苯二甲撑二胺(PXDA)或对苯二甲撑二胺(MXDA)]类型的杂化有机-无机材料至今尚未描述。通过溶剂热法合成了四种类型的化合物,即(MXDA)ZnSO_4(1),(MXDA)CdSO_4(2),(PXDA)ZnSO_4(3)和(PXDA)CdSO_4(4)。由于所有化合物均以非常细的粉末结晶,因此使用粉末衍射法进行了晶体结构研究。所有化合物均在正交晶体系统中结晶,晶胞参数为:a = 9.8004(4),b = 10.7829(3),c = 4.88473(19)。为1; 9.8824(10),11.0907(7),4.9663(5)?为2; 9.8496(3),21.2419(5),4.89556(17)?为3;和10.1136(4),21.6625(3),4.9562(2)?对于4。以MXDA为连接基的化合物在空间群P2_1ma中结晶,在Pnma中以PXDA空间化合物结晶。这些杂化材料由无机单层[-Me-(SO_4)-]和由二胺(PXDA或MXDA)形成的有机连接基连接而成。 Me金属离子和SO_4〜(2-)阴离子形成具有蜂窝结构的层。除晶体结构外,还进行了化学分析和SEM研究。还使用TG-DSC方法和XRD作为温度的函数研究了化合物的热稳定性。

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