Synthesis and Characterization of Quaternary Complexes Ln(CH_2ClCOO)_2 (NO_3) (phen)

Many binary lanthanide complexes have been studied. However, few mixed anion complexes with bidentate heterocyclic amines were synthesized. We synthesized mixed anion complexes Ln ( CH2 ClCOO )2 (NO3 ) ( phen) which was determined by elemental analyses . The IR spectra analyses indicate that NO3- , CH2 ClCOO- and phen are coordinated with Ln . The molar conductances of the complexes at 10-3 mol · L-1 were founded to be between 32.4 and 35.8 S·cm2· mol-1 , suggesting the nonelectrolytes in N-Dimethylformamide. And we determined the fluorescent spectra Eu(CH2ClCOO)2(NO3) ( phen ) and ESR spectra of Gd ( CH2 ClCOO )2 ( NO3) ( phen) .     

Crystal structures,antibacterial activity and thermal decomposition kinetics of lanthanide complexes with 4-chloro-2-methoxybenzoic acid and 1,10-phenanthroline

A series of lanthanide complexes [Ln(4-Cl-2-MOBA)3phen]2(Ln=Sm(1), Nd(2), Ho(3), Eu(4), Dy(5), and Tb(6); 4-Cl-2-MOBA=4-chloro-2-methoxybenzoate, phen=1,10-phenanthroline) were synthesized and characterized. The single-crystal X-ray diffraction demonstrates that 1–3 are isomorphous, which present dimeric structures with four 4-Cl-2-MOBA anions function as bridging ligands. Complexes 1 and 4–6 display their characteristic luminescence emission bands of central Ln3?ions. The heat capacities, the thermodynamic functions and the thermogravimetry–Fourier transform infrared spectra of gaseous products of complexes 1–6 were investigated.Their non-isothermal kinetics of the second decomposition stage was studied by the integral isoconversional non-linear method and Stark method. Furthermore, 1–6 exhibited excellent antibacterial activity against Candida albicans,Escherichia coli and Staphylococcus aureu.     

Preparation and Structural Analysis of Lanthanide Complexes with α-Hydroxyl-phenyl-acetic Acid and 1, 10-Phenanthroline as Ligands

A series of ternary lanthanide complexes Ln （C6H5CHOHCOO）3（phen） （H2O） （Ln= La, Ce, Pr, Nd, Sm, Eu） were synthesized with α-hydroxyl-phenyl-acetic acid and 1, 10-phenanthroline （phen） as ligands. The sturcture and property of complexes were characterized by elemental analysis, IR, 1^H-NMR, UV and TGA, and the coordinate mede of both ligands was discussed. It was shown that the co-ordinate mode of 1, 10-phenanthroline was chelated, while α-hydraxyl-phenyl-acetate ion was monedentate or bridging. The mechanism of thermal determinde by thermogravimetry was indicated that the degree of co-ordinate ability of ligand was： α-hydroxyl-phenyl-acetate ion 〉 1, 10- phenanthroline（phen）.     

Synthesis and Property Studies of Transparent Resins Containing Rare Earth Complex Eu(Ⅲ) (TTA)_2(MA)_2 Phen·H_2O

A new rare earth complex Eu(Ⅲ)(TTA)2(MA)2Phen·H2O was synthesized and characterized by element analysis, FTIR, UV, thermal analysis, and fluorescence spectra. The strong fluorescence and high thermal stability of Eu(Ⅲ)(TTA)2(MA)2Phen·H2O were used to modify resin. The copolymer containing europium was prepared by copolymerization of Eu(Ⅲ) and styrene/α-methylacrylic acid, and characterized by FTIR and fluorescence spectra. The fluorescence spectra showed that the copolymer was a sort of materials with good ...     

Synthesis and characterization of carbon-bridged bis(phenolate) lanthanum alkoxides and their catalytic behavior for the polymerization of L-lactide

Four lanthanum alkoxides stabilized by a carbon-bridged bis(phenolate) ligand were synthesized and their catalytic behavior for the ring-opening polymerization of L-lactide was explored. Reactions of [(MBMP)LaCp(THF) 2 ] (MBMP 2 = 2,2′-methylene-bis(6-tert-butyl-4-methyl phenoxo)) with HOCH 2 Ph, HOCH 2 CF 3 , HOCH(CH 3 ) 2 , and HOCH 2 CH 2 N(CH 3 ) 2 , respectively, in a 1:1 molar ratio in THF gave the dimeric lanthanum alkoxo complexes [(MBMP)Ln(μ-OR)(THF) 2 ] 2 (OR = OCH 2 Ph(1), OCH 2 CF 3 (2), OCH(CH 3 ) 2 (3), OCH 2 CH 2 N(CH 3 ) 2 (4)]. These complexes were well characterized, and the definitive molecular structure of complex 1 was determined. It was found that complexes 1 to 4 are efficient initiators for the ring-opening polymerization of L-lactide. The structure of the alkoxo groups has a significant effect on the catalytic behavior, and complex 2 can initiate L-lactide polymerization in a controlled manner.     

Polymerization of acrylonitrile catalyzed by lanthanide-sodium alkoxide clusters Lne（OCH2CH2NMe2）12（OH）eNas [Ln=Yb （1）, Nd （2） and Sm （3）]

Polymerization of acrylonitrile was carried out using,for the first time,the lanthanide-sodium alkoxide clusters Ln2(OCH2CH2NMe2)12(OH)2Na8 [Ln=Yb (1),Nd (2) and Sm (3)] as single component catalysts.These heterobimetallic complexes exhibit high activity and give atactic polyacrylonitriles with high molecular weight.The polymerization temperature can be varied over the range ?78 to 50°C.The solvent has a substantial effect on the polymerization activity.The order of activity for solvents is DMF>DME≈toluene≈...     

Synthesis, Characterization and Biological Activity of Transition Metals with Schiff Base Derived from Adamantaneamine and o-Vanillin

Five new solid complexes were synthesized about transition metals with Schiff base（ L, C18H23NO2 ） derived from adamantaneamine and o-vanillin, and characterized by elemental analysis, molar conductance, infrared spectra, UV-vis spectra, thermal analysis. Their chemical formula are [ML2]（ClO4）2 （ M= Mn, Co, Ni, Cu, Zn）, and the coordination numbers are four, The antibacterial activity of Schiff base ligand and its complexes was studied.     

Synthesis,Structural Characterization,and Electrochemical Properties of Binuclear Copper(Ⅱ) Complexes Containing Tetradentate Schiff Base Ligand

Two binuclear copper(Ⅱ) complexes, [Cu2(saloph)2 (μ-O)2]-2(DMF)[H2saloph=N,N′-o-phenylenebis(salicylideneaminato)] (a) and [Cu2(salen)2(μ-O)2] [H2salen=N,N′-bis(salicylic-deneaminato) ethylene] (b)were synthesized and characterized by X-ray crystallography. Both of them have distorted rectangular pyramidal geometry around Cu(Ⅱ). The complete series of complexes show bridging phenoxo groups between the copper centers, together with hydroxo-bridges in these complexes. The complexes have also been characterized by elemental analysis, IR, TG-DTA, and electrochemical results.     

Syntheses,Crystal Structures,and Fluorescence Properties of Two 2D→2D Coordination Polymers Based on the Flexible 4-Substituted Bis(1,2,4-triazole) Ligand

Two new 2 D → 2 D zinc(II) coordination polymers, [Zn(btre)0.5(nbdc)(H2 O)]n(1) and {[Zn(btre)0.5(Me Oip)(H2 O)2]·H2 O}n(2)(btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, nbdc=3-nitro-1, 2-benzenedicarboxylate, Me Oip=4-methoxybenzene-1, 3-dicarboxylate) were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions. Three sets of equivalent 2 D(6, 3) networks parallel polycatenated with each other to give a 2 D → 2 D network in 1 and 2. There are strong π-π interactions and hydrogen bonding interactions between adjacent parallel polycatenated 2 D(6, 3) network in 1. Only hydrogen bonding interactions exist in 2. Thermal stabilities and luminescence of 1 and 2 were investigated.     

Crystal structure and photoelectricity property of Fe(Ⅱ/Ⅲ) coordination supermolecules

Three new mixed-ligand Fe(Ⅱ/Ⅲ) complexes [Fe2(μ2–btec)( μ2–H2btec)(phen)2(H2O)2]n (1), [Fe2(btec) (phen)2(H2O)4] (2), and {[Fe(o-pha)(phen)(H2O)]·H2O}n (3) (phen=1,10-phenanthroline, o-H2pha=o-phthalic acid, H4btec=1,2,4,5-benzenetetracarboxylic acid) have been hydrothermally synthesized and detected by single crystal X-ray diffraction, showing that complexes (1) and (2) are both bridged by the betc4? ligands to form 1D chain and dinuclear structure and complex (3) is bridged by the o-pha groups to form 1D ...     

Synthesis and Characterization of Quaternary Complexes Ln ( CH2 ClCO0 ) 2 ( NO3 ) ( phen)

Many trinary lanthanide complexes have been studied. However, few mixed anion complexes with bidentate heterocyclic amines were synthesized. We synthesized mixed anion complexes Ln ( CHi CICO0 )2 (NO3) (phen) which was determined by elemental analyses. The IR spectra analyses indicate that NO3 ,CH2 C1CO0- and phen are coordinated with Ln. The molar conductances of the complexes at 10-3 mol. L-1 were founded to be between 32.4 and 35.8 S. cma@mol- 1 , suggesting the nonelectrolytes in N Dimethylformamide. And we determined the fluorescent spectra Eu(CH2C1COO)2(NO3) ( phen ) and ESR spectra of Gd( CH2 ClC00 )2 ( NOs ) ( phen ) .     

三(2-甲基苯并咪唑)-锰配合物的合成、表征及对催化H2O2岐化反应活性的增强作用

在乙醇溶剂中,通过Mn(Ⅱ)盐与N,N,N-三(2-甲基苯并咪唑)胺(NTB)反应合成了[Mn(NTB)(Im)]Cl2、[Mn2(NTB)2(H2NCONH2)]Cl4*3H2O、[Mn(NTB)(NO3)](NO3)*3H2O和[Mn(NTB)(HO-phen-OH)]Cl2 4种新配合物,并运用元素分析、摩尔电导、红外光谱和紫外光谱进行了表征.研究了配合物对H2O2岐化反应的催化活性,以及对过氧化氢模拟酶[Fe(NTB)Cl2]Cl*3H2O对H2O2岐化反应活性的影响.实验表明,所合成的锰配合物具有明显的活性增强作用.     

稀土配合物[Ln(C3H7NO2)2(C3H4N2)(H2O)](ClO4)3(Ln=Eu,Dy)的合成、表征与热分析

合成了稀土高氯酸盐与咪唑、DL-α-丙氨酸的两种配合物晶体．经傅立叶变换红外光谱(FT—IR)、元素分析和化学分析测定后确定其组成为[Ln(C3H7NO2)2(C3H4N2)(H2O)](ClO4)3(In=Eu，Dy)．用差示扫描量热法(DSC)在高纯流动N2气氛下测定了两种配合物的热分解数据，它们的热分解过程都是由两个放热峰组成，两个配合物开始分解的温度分别为497．2K，491．8K，峰顶温度分别为564．4K和613．2K，544．4K和615．1K，热分解焓值分别为2026kJ／mol和961．2kJ／mol，2596kJ／mol和1097kJ／mol．测定结果表明配合物有较高的热稳定性．     

系列Ni-Ln（Ⅲ）配合物的合成、晶体结构及光物理性质[Ln（Ⅲ）=Tb,Eu,Nd]

采用水热合成法,得到3种Ni-Ln（Ⅲ）[Ln（Ⅲ）=Tb,Eu,Nd]配合物[Tb2（C6H5COO）8][Ni（phen）3].4H2O（1）; [Eu2（C6H5COO）8][Ni（phen）3].4H2O（2）; [Nd2（C6H5COO）8][Ni（phen）3].4H2O（3）.所合成的这3种配合物结构基本相同,均为离子型配合物.在配阴离子中,每个Ln（Ⅲ）离子与8个羧基氧配位,生成双核配离子.在配阳离子中,Ni与phen配位,形成了畸变的八面体构型.对这3种配合物的单晶进行了X-射线衍射分析,确定了晶体结构,它们有相似的结构.同时对配合物紫外吸收光谱（UV-VIS-NIR）,红外（IR）光谱和荧光（FP）光谱进行了测定和分析指认.     

一维链状冠醚配合物:{[K(DB18-crown-6)]2(CH3CN)}[Pt(SCN)4]的合成与晶体结构

合成了一雏链状冠醚配合物：{[K（DB18-crown-6)]2(CH3CN)}[Pt(SCN)4]。通过元素分析、红外光谱、单晶X-射线衍射对配合物结构进行表征，结果表明：配合物为单斜晶系，空间群c2／ca=2．5904(8)，b=1．3654(4)，c=1．817O(6)nm，β=123．811(4)，V=5．339(3)nm^3，Z=4，Dcalcd=1．577g／cm^3,F(000)=2552，R1=0．0511，wR2=0．1411。配合物由两个[K（DB18-crown-6)]^ 配阳离子、一个[Pt(aSCN)4]^2-配阴离子和一个CH3CN分子组成。相邻[K(DBl8-crown-6)]2[Pt(aSCN)4]离子对通过CH3CN分子中的N原子形成一维链状结构。     

Ln(Ⅲ)-邻菲罗啉-肉桂酸三元配合物的合成、抗炎作用及XPS研究

合成了3种Ln(Ⅲ)离子与1，10—二氮杂菲(phen)和肉桂酸(HCA)的三元配合物，通过元素分析、摩尔电导、UV、IR、^H NMR和XPS等的研究，确定配合物的化学组成为Ln(phen)(CA)3(H2O(Ln＝Ce(Ⅲ)，Nd(Ⅲ)，Eu(Ⅲ)离子)，phen及CA^-均以双齿整合方式与金属离子配位，配位数为8．初步研究了配合物的抗炎作用和在霜剂中的稳定性．     

含Er(Ho)化合物的合成、结构及光物理性质

采用水热法合成了2种含Ln3+的化合物[Er2(p-CH3 C5 H4 COO)10(Phen)2](1),[H02(p-CH3 C5 H4 COO)10(phen)2](2),通过X-光单晶衍射确定了它们的晶体结构.并在室温下测定了它们固态粉末的IR、UV-Vis-NIR吸收光谱以及近红外发射光谱,并进行了较详尽的分析,重点研究了化合物的近红外发光性能,得到的结果表明具有刚性共轭结构的配体能够为敏化Ln3+的发光供给能量.使其在近红外区具有明显的发光.     

亚甲基双膦酸四异丙基酯[（^iPrO）2P（O）CH2P（O）（^iPrO）2]催化合成晶体[Eu（1,10-phen）2]（NO3）3

在亚甲基双膦酸四异丙基酯（iPrO）2P（O）CH2P（O）（iPrO）2的催化作用下,合成一种新的配合物[Eu（1,10-phen）2]（NO3）3,并用红外光谱、元素分析和X-ray单晶衍射进行了测试与表征.在反应中（iPrO）2P（O）CH2P（O）（iPrO）2并未参加配位,但却起到了催化、诱导的作用.     

铕(钇)-水杨酸-邻菲啰啉配合物的合成、表征及发光性能

以水杨酸(Hsal)和邻菲啰啉(phen)为协同配体,铕钇离子为中心体,合成不同Eu/Y摩尔比的系列三元双核配合物,并通过元素分析、紫外可见光和红外光谱确定配合物的组成.研究配合物的发光性能以及Eu/Y摩尔比的影响.结果表明,配合物的组成为EuxY1-x(sal)3(phen)(x=0.1~1.0).在Eu/Y摩尔比为0.6:0.4时,配合物Eu0.6Y0.4(sal)3(phen)的发光强度最强.在该系列配合物中,不仅配体可以将吸收的能量传递给发光的铕离子,使其发光,而且不发光的钇配合物也可将其吸收的能量通过分子内能量传递给铕离子,增强铕的发光强度.     

混配型茂基稀土氯化物Ln(C5H5)(C5H4CH3)Cl(Ln=Y, Gd, Er, Yb)的合成和结构研究

三氯化稀土依次与等摩尔的甲基环戊二烯基钠和环戊二烯基钠在四氢呋喃(THF)中反应，合成了4个新的混配型茂基稀土氯化物Ln(C5H5)(C5H4CH3)Cl[Ln=Y(1)，Gd(2)，Er(3)，Yb(4)]，在THF中加热回流，环戊二烯能质解化合物4的甲基环戊二烯基配体，得到同环配合物Yb(C5H5)2Cl(5)，所有这些化合物都经过了元素分析、红外和质谱表征，其中配合物2和5的结构还得到单晶X射线分析确证。