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三苯基锡4-吡啶甲酸酯的合成、性质和晶体结构 总被引:2,自引:0,他引:2
用三苯基氯化锡与4-吡啶甲酸钠反应,合成了三苯基锡4-吡啶甲酸酯,并进行 了红外光谱、核磁共振氢谱及质谱表征。X射线单晶衍射表明,化合物属单斜晶系 ,空间群P21,晶胞参数:a=1.6629(3)nm,b=104987(4)nm,c=2.4318(7)nm,β =90.040(5)°,Z=8,Dc=1.1529g/cm^3,R1=0.0543,wR2=0.1086。化合物的晶体 是由两个结构相似但键长和键角不同的独立分子所组成,且每个分子含有两种化学 环境不同的锡原子。它们通过4-吡啶甲酸配体的氮原子桥联,形成五配位三角双锥 构型的一维无限链聚合物。 相似文献
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Three bismuth(Ⅲ) complexes Bi(1,10-phen)[S2CN(CH3)2]2(NO3) (1), {Bi(S2COCH3)[S2CNC6Hs(CH3)]2}2 (2) and [Bi(S2CNBu2)2(CH3OH)(NO3)]∞ (3) were synthesized and characterized by elemental analysis and IR spectra. Their crystal structures were determined by X-ray single crystal diffraction analysis. Studies show that complex 1 has a monomeric structure with the central bismuth atom eight-coordinated in a capped distorted pentagonal bipyramidal geometry. The complex 2 takes centrosymmetric dimeric structure and the bismuth atoms are seven-coordinated in distorted pentagonal bipyramidal geometry.In complex 3, the bismuth atoms are seven-coordinated in distorted pentagonal bipyramidal geometry by bridging nitrate O atoms and the resulting structure is onedimensional infinite chain polymer. 相似文献
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The bis(tributyltin) ester of succinic acid was synthesized by the reaction of disodium salt of succinic acid with tributyltin chloride in a molar ratio of 1:2. The crystal structure was determined by X-ray single-crystal diffraction. It belongs to orthorhombic with space group Pccn, a = 20.949(3), b = 17.470(3), c = 20.345(3)A, V= 7446(2)A^3, Z= 8, Dc = 1.242 g/cm^3, μ=1.365 mm^-1, F(000) = 2864, R = 0.0544 and wR = 0.1417. The tin atom is of five-coordination in a trigonal bipyramidal structure by bridging two carboxylate groups in different directions and the resulting structure which contains straight twist large ring channels along the axes of a, b and c is a three-dimensional framework polymer containing two different tin atoms. 相似文献
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用三苄基氯化锡及三丁基氯化锡与4-吡啶甲酸钠反应,分别合成了三苄基锡4-吡啶甲酸酯(1)和三丁基锡-4-吡啶甲酸酯(2),并进行了红外光谱、核磁共振氢谱及质谱表征.X射线单晶衍射分析结果表明,化合物1属单斜晶系,P21/n空间群,晶胞参数:a=0.96564(8)nm,b=1.64085(14)nm,c=1.49403(13)nm,β=97.681(2)0,V=2.3460(3)nm3,Z=4,Dc=1.456g/cm3.化合物2属单斜晶系,P21/n空间群,晶胞参数:a=0.96673(14)nm,b=2.3845(4)nm,c=0.97071(14)nm,β=112.463(3)o,V=2.0679(5)nm3,Z=4,Dc=1.324g/cm3.两个化合物均通过4-吡啶甲酸配体的氮原子桥联,形成五配位三角双锥构型的一维无限链聚合物. 相似文献
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The mixed-quadriligand bismuth complex [Bi(S2CNEt2)2(NO3)]([1,10-Phen] has been synthesized, and its crystal structure was determined by X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 10.074(17), b = 15.05(2), c = 18.99(3)(°A), β = 98.85(3)o, V = 2845(8)(°A)3, Z = 4, F(000) = 1464, Dc = 1.746 g/cm3, μ = 6.523 mm-1, R = 0.0333 and wR = 0.0703. In this complex, the bismuth atom is eight-coordinated in a capped distorted pentagonal bipyramidal geometry. 相似文献
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有机锡的羧酸配合物因其具有很强的生物活性以及多变的结构类型受人们的广泛关注1~4。研究结果表明中心锡原子的配位形式决定于直接与锡原子相连的烃基的结构和羧酸基配体的类型56。为了研究该类配合物的生物活性及其结构关系近年来合成了许多不同类型的有机锡的羧酸配合物。尤其是对羧酸配体中具有额外孤电子对的有机锡羧酸配合物的研究导致了许多新型结构的有机锡化合物的发现7~9。为探索三烃基锡羧酸配合物的结构类型、羧酸配体中杂原子与锡原子的作用方式以及分子结构与其生物活性的关系本文合成了三苄基4吡啶甲酸锡结晶水合物… 相似文献