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11.
Three new lanthanide complexes with the formulae [Eu2(TsGly)6(phen)2(H2O)2] (1), [Ln(TsGly)2(phen)2-(H2O)2]C1·2H2O [Ln=Er(2a) and Yb (2b), TsGly=N-p-tolylsulfonylglycinate, phen= 1,10-phenanthroline] were synthesized. Crystallographic data for 1: monoclinic, P21/n, a= 1.29791(16) nm, b= 1.9034(2) nm, c= 1.7596(2) nm,β=93.410(3)°, V=4.3394(9) nm^3, Z=4, R1 =0.0326, wR2=0.0771; and for 2b: triclinic, P1, a= 1.2674(2) nm, b= 1.4405(2) nm, c= 1.4809(3) nm, a= 113.256(3)°, β= 108.253(3)°, γ=94.739(3)°, V=2.2922(7) nm°3, Z=2, R1=0.0292, wR2=0.0669. X-ray diffractional analysis reveals that compound 1 adopts dinuclear structure with fourfold bridging TsGly ligands between the Eu(Ⅲ) centers, while compound 2b features an unusual mononuclear structure. 相似文献
12.
Three new coordination networks based on a versatile and unsymmetric building block 3-(sulfonyl-glycine)benzoic acid (HAL) ligand and inorganic Co(Ⅱ) salt, [Co(HL)(bipy)2]. ClO4·1.5H2O (1), [Co3(L)2(H2O)6]·4H2O (2) and [Co(HL)(bpp)(H2O)2]·2H2O (3) (bipy = 2,2-bipyridine, bpp = 1,3-bi(4-pyridyl)propane), have been synthesized in aqueous media and structurally characterized by single-crystal X-ray diffraction. Reaction of Co salt with H3L afforded a neutral 1D alternating chain, which shows a 3-D supramolecular network through hydrogen bonds. When the auxiliary 2,2-bipyridine is used, a mononuclear unit is constructed; if using auxiliary ligand bpp, a neutral 1-D uniform chain is obtained and further extended into a 3-D supramolecular structure through versatile hydrogen bonds. The H3L ligand in 1 adopts a bidentate chelating coordination mode while that in 2 and 3 assumes a pentadentate bridging and a bis-monodentate bridging modes, respectively. This work and our previous work evidently demonstrate that the structures vary with altering the second ligands. 相似文献
13.
钬与β-丙氨酸配合物的合成、表征及晶体结构 总被引:1,自引:0,他引:1
报道了稀土金属Ho与b丙氨酸配合物的合成、分子结构和晶体结构的测定, 具体结果如下: 化学式C18H50Cl6Ho2N6O41, 分子式{[Ho2(bala)6(H2O)4](ClO4)6H2O}n (bala = b丙氨酸), 三斜晶系, P空间群, 晶胞参数: a = 9.199(2), b = 12.870(2), c = 21.620(5) , a = 76.92(1), b = 81.15(1), g = 82.91(1), V = 2453.2(8) ?, Z = 2, Mr = 1549.2, = 3.649, F(000) = 1528, Dc = 2.097 g/cm3. 配合物为无限链状分子, Ho(III)离子为九配位的单帽四方反棱柱配位多面体。 相似文献
14.
A new Cd(Ⅱ) complex([Cd(H2PIDC)2]n) with singly deprotonated 2-propyl-imidazole-4,5-dicarboxylate as bridging ligand was synthesized and characterized by X-ray diffraction method.Crystal data:monoclinic,space group P21/c,with a=8.2547(11),b=10.7071(15),c=13.9131(14),β=126.164(5)o,V=992.8(2)3,C16H18N4O8Cd,Mr=506.74,Z=2,Dc=1.695g/cm3,F(000)=508,μ=1.151 mm-1,R=0.0296 and wR=0.0812 for 1581 observed reflections.Singly deprotonated ligands(H2PIDC-) act as μ3-bridge and join the Cd(Ⅱ) atoms into a 2-D layer structure.The 2-D layers are further linked by intermolecular hydrogen bonds into a 3D network.The luminescent property of the complex was also investigated. 相似文献
15.
通过水热法合成了两种锌配位聚合物{[Zn(ic)(bip)]·2H2O}n(1)和[Zn(ic)(bpe)]n(2)(H2ic=衣康酸,bip=3,5-二(1-咪唑基)吡啶,bpe=1,2-二(4-吡啶基)乙烯),并通过X射线单晶衍射和元素分析对其结构进行了表征。配合物1和2均为含有一维金属-羧酸链的二维(4,4)格子层结构。此外,对它们的热重、粉末X射线衍射和固体荧光性能进行了考察。与配体bip相比,1的发射光谱发生了明显的蓝移(78 nm),可能归因于配体到金属的电荷转移;2显示与游离的bpe配体相似的荧光性质,轻微的红移可能是因为与金属离子之间的配位作用导致的。 相似文献
16.
近年来,二维(2D)金属-有机框架(MOF)纳米复合材料被广泛的应用于生物医学领域,尤其是在抗菌方面。在此,我们通过光照诱导还银离子成功在二维MOF纳米片上生长银纳米粒子,得到了一种银纳米粒子(Ag NPs)修饰的二维Zr-Fc-MOF (MOF-Ag)纳米片,并将其用于光热增强Ag+释放抗菌治疗。通过水热法和超声处理合成MOF纳米片,然后通过原位光辐照诱导还原在MOF纳米片上生长Ag NPs。系列表征结果表明Ag NPs成功负载到MOF纳米片上。聚乙烯吡咯烷酮(PVP)的修饰不仅可以增强MOF-Ag在溶液中的稳定性,还可以增强它的生物相容性。在近红外激光(NIR)照射下,MOF纳米片可以在短时间升温,而温度的升高可以加速Ag NPs在溶液中氧化为银离子。通过细菌生长曲线、菌落相对数和细菌形态变化等实验表明PVP@MOF-Ag纳米片具有优异的广谱杀菌性能。此外,2D MOF纳米片良好的光热性能不仅可以增强Ag+的释放,还可以增强细胞膜的通透性,随后进入细菌中的Ag+可以诱导内源性活性氧的产生,从而引发细菌的氧化应激,实现高效抗菌。基于良好的体外抗菌性能,进一步将PVP@MOF-Ag纳米片用于小鼠伤口愈合,在此期间PVP@MOF-Ag纳米片表现出良好的治疗效果和生物安全性。我们的研究结果表明,PVP@MOF-Ag纳米片可以作为光热增强Ag+释放抗菌治疗和伤口愈合的有效平台。 相似文献
17.
用水热法合成了基于刚性不对称三氮唑衍生物配体H2ptp (H2ptp=4-(5-(1H-pyrazol-4-yl)-4H-1,2,4-triazol-3-yl)pyridine)的2个Cd(Ⅱ)配合物 {[Cd2(Hptp)2(OAc)2]·7H2O}n (1)和{[Cd(Hptp)Cl(H2O)]·H2O}n (2),并通过元素分析、差热分析、粉末X射线衍射和单晶X射线衍射进行表征。配合物1具有一个梯状的一维结构,在π…π堆积作用下这些一维梯链形成了超分子二维平面。在氢键的连接作用下,客体水分子形成了独特的以双五元水簇为结构单元的水链,这些水链填充在相邻的二维平面之间并通过氢键把二维平面连接成了三维超分子网络。配合物2具有一个新型的二维双层结构,分子间氢键把这些二维平面连成了三维结构。另外,测试了2个配合物的荧光性质。 相似文献
18.
稀土在羊毛染色剂中用做助染剂犤1犦,在钙蛋白中用做钙离子的探针犤2犦得到广泛的应用,稀土的生物效应是以其与各种生物配体如氨基酸、肽、蛋白质、核酸等生物分子的作用为基础的,因此研究稀土氨基酸配合物的单晶结构对于探讨稀土离子与生物体的作用很有意义,稀土与有关α-丙氨酸的摩尔比为1∶1犤3~4犦和1∶2犤5~7犦类型的配合物的单晶结构已有报道,而有关稀土β-丙氨酸配合物的研究还很少犤8犦,特别是关于稀土β-丙氨酸配合物的单晶结构还未见报道,本文合成了高氯酸镧与β-丙氨酸的1∶3型的配合物,并测定了其晶… 相似文献
19.
A new ternary complex of nickel(Ⅱ) with L-aspartate (L-Asp) and 1, 10-phenanthroline(Phen), [Ni3(L-Asp)(Phen)5(H2O)3](ClO4)4.4.75H2O, has been synthesized in a mixed solvent of H2OC2H5OH at the pH value of 3. It crystallizes in triclinic, space group P-1 with a =11.861(2), b = 18.384(4), c = 19.746(3)(°A), α = 107.68(1), β = 105.94(1), γ= 103.41(2)°, V =3703.6(11) (°A)3, Mr = 1745.66, Z = 2, Dc =1.565 g/cm3, u = 0.989 mm-1, F(000) = 1791, R = 0.0643and wR = 0.1611. The complex contains two cations, binuclear [Ni2(L-Asp)(Phen)3(H2O)]2+ and mononu- clear [Ni(Phen)2(H2O)2]2+. All the nickel ions in the complex are six-coordinated with a distorted octahedral geometry, but the coordination environments for them are different. There exist hydrogen bonds and π-π stacking interactions in the complex. 相似文献
20.
双核配合物[Cu2(L-Asp)(phen)3(NO3)](NO3)·4H2O的合成及晶体结构 总被引:1,自引:1,他引:1
The new complex [Cu2(L-Asp)(phen)3(NO3)](NO3)·4H2O (L-Asp=L-aspartic acid and phen=1,10-phenanthroline) has been synthesized and its crystal structure has been determined. The complex crystallizes in the monoclinic with space group P21/c, The cell parameters are: a=1.261 3(2) nm, b=1.500 8(4) nm, c=2.230 7(4) nm, β=99.55(1)°, and V=4.164 1(16) nm3,Dc=1.587 g·cm-3. The complex contains two six-coordinated copper ions, and these two copper ions are connected together by L-aspartate to give rise to a binuclear structure. Hydrogen bonds and π-π stacking interactions are observed in the complex. CCDC: 249250. 相似文献