三维无机-有机杂化微孔化合物Mn_3(BTC)_2(DMF)_4的合成与结构

The title compound Mn 3(BTC) 2(DMF) 4 (BTC=1,3,5-benzenetricarboxylic acid,DMF=dimethyl formamide) was synthesized under the mild conditions and its crystal structure was determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic system and belongs to space group P2 1/c with a =1.787 6(4) nm, b =1.179 7(2) nm, c =1.884 8(4) nm, β =116.35(3)°, V = 3.561 9(12) nm 3, Z =4, D c=7.413 Mg/m 3, M r=871.43, μ =5.081 mm -1 , F (000)=8 082, R = 0.045 6 , wR =0.106 3. Its structure reveals that each asymmetric unit of the title polymer contains three Mn(Ⅱ) ions,six BTC and four DMF ligands. The coordination of BTC ligands with Mn(Ⅱ) ions forms a 3D infinite framework having helical chains composed with 2 1 axes and about 0.6 nm× 0.8 nm channels along the [100] direction.

三维无机-有机杂化微孔化合物[Zn_3(BTC)_2(H_2O)_3]_n的合成与结构

The title compound [Zn3（BTC）2（H2O）3]n（BTC=1,3,5-benzenetricarboxylic acid） was synthesized under mild conditions and its crystal structure was determined by single crystal X-ray diffraction. The compound crystallizes in the cubic system and belongs to space group Fm-3m with a=2.662 6（3） nm ,V=18.877（4） nm 3,Z=16,Dc=1.51 g/cm 3,Mr=664.4,μ=0.198 mm -1 , F（000）=852 ,R=0.062 5,wR=0.129 4. Its structure reveals that the title polymer is composed of dimeric zinc tetracarboxylate units,with a short Zn-Zn internuclear separation of 0.295 0（4） nm. The coordination of BTC ligands with Zn ions forms a 3D infinite framework with about 1.117 4 nm×1.327 4 nm pores along the [001],[100] and [010] direction. [WT5HZ]

三维无机-有机杂化微孔化合物Mn_3(BTC)_2(bpy)(EG)(DMF)·(DMF)·1/3(C_2H_5OH)的合成与结构表征

The title compound Mn 3(BTC) 2(bpy)(EG)(DMF)·(DMF)·1/3(C 2H 5OH)(BTC=1,3,5-benzenetricarboxylic acid, bpy=4,4′-bipyridine, EG=ethylene glycol, DMF=dimethylformamide) was synthesized under mild conditions and its crystal structure was determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic system and belongs to space group P2 1/n with a= 1.637 2(3) nm, b=1.481 4(3) nm, c=1.838 4(4) nm, β=113.70(3)°, V=4.082 5(14) nm 3, Z=4, D c=1.508 Mg/m 3, M r=958.85, μ=1.001 mm -1, F(000)=1 920. R 1=0.098 5, wR 2= 0.218 3. Its structure reveals that Mn(Ⅱ) centers and the carboxylate groups of BTC construct 1D O—C—O—Mn chains. Then, adjacent chains are interlinked by benzene rings of BTC to form a novel 3D architecture. It contains eight-membered rings channels that are about 0.8 nm×0.8 nm viewed along the (101) direction. In addition, it is believed that the bpy acts as both an organic ligand and a structure-directing agent in the synthesis of the title compound.

基于PbBr_2的有机-无机杂化化合物的合成和晶体结构（英文）

合成得到了2个新的有机-无机杂化化合物{(4-CH_3-Bz-4-Ph-Py)[PbBr_3]}_n(1)(4-CH_3-Bz-4-Ph-Py+=4-甲基苄基-4-苯基吡啶离子)和{(4-F-Bz-4-Ph-Py)[PbBr_3]}_n(2)(4-F-Bz-4-Ph-Py+=4-氟苄基-4-苯基吡啶离子)。对化合物1和2进行了元素分析、粉末X射线衍射等表征,并利用X射线单晶衍射测定了它们的单晶结构,配合物1与2同构,均属于正交晶系,P21212空间群。结构研究表明,配合物1和2中,铅溴八面体通过共边连接方式,形成[Pb_3Br_9]n三链,有机阳离子填充在无机溴化铅链空隙中。配合物1和2均未作手性分离。

三维无机—有机微孔化合物PbC_4H_4O_4的水热合成与结构表征

化合物PbC4H4O4是在定温水热的条件下合成的,其晶体结构是用X-射线单晶衍射仪测定的.具体数据为:P2(1)/c witha=0.968 0(2)nm,b=0.672 76(16)nm,c=0.900 8(2)nm,β=106.901(4)°,V=0.561 3(2)nm3,Z=4,Dc=3.825 g.cm-3,Mr=323.26,μ=0.071 073 nm,F(000)=568,R1=0.059 6,ωR2=0.150 6.其结构为两个琥珀酸配体连接一个铅离子构成二维链,再由此二维琥珀酸配体的羧基氧连接其它链上的铅离子形成三维结构.在(101)方向上形成的六元微孔孔径约为0.672 8(2)nm×0.451 0(1)nm.另外,琥珀酸在化合物中起到了无机配体和主要结构物质的双重作用.

多面体低聚倍半硅氧烷改性水性聚氨酯木器漆的研究

一种新型的纳米级有机/无机杂化材料——多面体低聚倍半硅氧烷(POSS)引起了人们的广泛关注。向聚合物体系中加入很少量的POSS便会使复合材料的性能得到明显提高。首先利用顶角-盖帽法合成POSS,用其改性水性聚氨酯木器漆。采用FT-IR、TGA、XRD对复合材料进行表征,并且测量复合材料在室温下接触角。结果表明,POSS能够均匀地分布在漆膜中,形成有机-无机互穿网络结构。此外,POSS的加入提高漆膜的耐热性能,增加涂膜的疏水性。漆膜的机械性能除附着力外均有所提高。