富勒烯C~6~0与二茂铁酮亚胺电荷转移相互作用的研究

C~6~0与三种二茂铁酮亚胺η^5-C~5H~5Fe[C~5H~4C(CH~3)=N-C~6H~4R-p]-η^5(1a R=H,1bR=CH~3,1c R=OCH~3)在甲苯和室温下可发生电荷转移相互作用形成三种电荷转移配合物η^5-C~5H~5Fe[C~5H~4C(CH~3)=N-C~6H~4R-p]-η^5/C~6~0 (2a R=H,2b R=CH~3,2c R=OCH~3)。通过紫外光谱证实了它们的存在,并用Benesi-Hildebrand方程求出了2a、2b和2c的电荷转移平衡常数分别为0.769、0.928和2.353mol^-^1·dm^3。鉴于它们远大于普通有机胺与C~6~0形成的电荷转移配合物的平衡常数,因此可认为在2a～2c中存在着由二茂铁核及亚胺基向C~6~0的双重电荷转移相互作用。     

两个由异烟酰胺构筑的钴、镍配合物的合成及晶体结构

采用溶液培养法,在室温下合成了2个新的过渡金属配合物[Co(inta)2(H2O)4][Co(H2O)6](tdc)2.2H2O(1)和[Ni(inta)2(H2O)4](tdc).2H2O(2)(inta=异烟酰胺,H2tdc=2,5-噻吩二甲酸)。并对其进行了元素分析、红外光谱、紫外光谱、热重和X-射线单晶衍射测定。这两个配合物通过氢键和π-π相互作用形成了三维超分子网状结构。     

两个基于MnⅢ席夫碱氰基桥联化合物的合成、结构和磁性

本文利用MnⅢ席夫碱配合物作为前驱体,与含有氰根桥联配体的构筑基块K3[CoⅢ(CN)6]或Na[N(CN)2]反应合成了2个新的化合物[MnⅢ6(Salen)6(H2O)6.CoⅢ(CN)6][CoⅢ(CN)6].6H2O(1)和[MnⅢ(5-Br)Salen.N(CN)2].H2O(2),其中Salen为二-邻苯甲醛乙二胺。利用红外光谱、元素分析和X-射线单晶衍射分析对其结构进行了表征并测试了其磁学性质。结构分析表明化合物1由1个七核阳离子簇[Mn6Co]3+和一个平衡阴离子[Co(CN)6]3-组成的离子对化合物。而化合物2则为由MnⅢ组成的一维中性链结构,[N(CN)2]-利用叠氮桥联方式和金属离子配位。磁性研究表明,化合物1中[Co(CN)6]3-几乎不传递磁耦合作用,所以是一个顺磁体,但MnⅢ自身的零场分裂导致低χMT在低温时随温度下降而减小,而2则表现出弱的链内反铁磁性耦合作用。对比化合物1和2的磁性得知共轭体系[N(CN)2]-比同样是五原子配体[Co(CN)6]3-传递较强磁耦合作用。     

两个由5-硝基间苯二甲酸和双咪唑基配体构筑的锰、钴配合物的合成及晶体结构(英文)

通过水热法合成了2个新的配合物[Mn(NIPH)(mbix)]n(1)和[Co(NIPH)(mbix)(H2O)3]2n·2n H2O(2)(H2NIPH=5-硝基间苯二甲酸,mbix=1,3-双(咪唑基-1-基)苯)。并对其进行了元素分析、红外光谱、紫外光谱、热重和X-射线单晶衍射测定。这两个配合物通过氢键和π-π相互作用形成了三维超分子网状结构。     

[Co(2,3-tri)(amp)Cl][ZnCl4]体系中部分几何经式异构体的结构测定

利用单晶X-射线衍射分析了[Co(2,3-tri)(amp)Cl][ZnCl4](2,3-tri=N-(2-Aminoethvl)-1,3-propanediamine;amp=2-(Aminomethyl)pyridine)体系中的一异构体(m3-[Co(2,3-tri)(amp)Cl][ZnCl4]@2.5H2O)结构,用二维核磁共振DQCOSY和NOESY技术联合解析了另两个异构体(m2-[Co(2,3-tri)(amp)C1][ZnCl4]及m4-[Co(2,3-tri)(amp)Cl]][ZnCl4])在溶液中的结构.结构解析显示它们为该体系的三个几何经式异构体.解析的晶体结构属中心对称的空间群,表明它是外消旋的对映体.     

氯冉酸阴离子桥联双核铜(II)配合物的合成和磁性

本文合成了五种以氯冉酸二价阴离子为桥联配体的Cu(II)单核([CuLCA].H~2O)和双核([Cu~2L~2CA](ClO~4)~2配合物:[Ca(phen)CA].H~2O(1),[Cu~2(phen)~2CA](ClO~4)~2(2),[Cu(NO~2-phen)CA].H~2O(3),[Cu~2(NO~2-phen)~2CA](ClO~4)~2(4)和[Cu~2(bpy)~2CA](ClO~4)~2(5)。经元素分析、红外、固体紫外、顺磁共振、磁化率及变温磁化率的测定对上述各配合物进行了表征。配合物1,3可能是通过水分子中的氢键将两个[CuLCA]单元联接而缔合的假双聚体。配合物2,4,5则由阳[Cu~2L~2CA]^2^+阳离子和弱配位的ClO~4^-阴离子所组成。双核配合物中Cu(II)离子的几何构型可能为畸变的四方锥。所有五种配合物均难溶于水及常见有机溶剂。上述配合物的室温ESR谱呈现ΔM~s=2的从单重态到三重态的半场跃迁。配合物2,5的变温磁化率(4-300K)已测得,利用Heisenberg模型确定交换参数J值为-29.2和-25.7cm^-^1。表明在此类桥联配合物中,两核间存在着反铁磁性交换耦合作用。     

新型Schiff碱单核及异双核配合物的合成及光谱特征

首次报道了新型Schiff碱配合物--双[N,N'-亚乙基-2,2'-(苯亚甲基)二(3,4-二甲基吡咯-5-醛缩亚胺)]合单金属配合物MH₂L[M=Mn(Ⅱ),Fe(Ⅲ)Cl,Cr(Ⅲ)Cl,Cu(Ⅱ),Co(Ⅱ),Ni(Ⅱ),Zn(Ⅱ)]及异双金属配合物MnML[M=Fe(Ⅲ)Cl,Cr(Ⅲ)Cl,Cu(Ⅱ),Co(Ⅱ),Ni(Ⅱ),Zn(Ⅱ)]的合成方法及光谱特征.     

新型含2,5-二-（3,5-二甲基吡唑-4-巯基）-1,3,4-噻二唑-M(M=Co2+,Cd2+,Mn2+)配合物的合成、晶体结构及其抑菌活性研究

将配体L[2,5-二-(3,5-二甲基吡唑-4-巯基)-1,3,4-噻二唑]与Co(NO3)2 6H2O,Cd(NO3)2 4H2O和MnCl2 4H2O进行配位反应,得到三个配合物[Co(L)2(H2O)4](NO3)2 4(CH3CH2OH)(1),[Cd(L)2(H2O)4](NO3)2 4(CH3CH2OH)(2),[Mn(L)2(Cl)2(CH3OH)2]2(CH3OH)(3),并用元素分析,FT-IR和X射线单晶衍射进行了表征.分析结果表明,配体L呈"U"形,配合物1～3呈"S"形.配合物中Co(II),Cd(II),Mn(II)的配位环境均为扭曲八面体,每个金属离子同时和两个配体进行配位.配体和配合物体外抑菌活性研究结果表明,配体及其配合物都有一定的抑菌活性.     

基于两种柔性同分异构羧酸配体的钴(Ⅱ)配合物的合成、结构及磁性研究(英文)

分别以E-3-[4-(羧甲氧基)-苯基]丙烯酸(H2L1)和E-3-[3-(羧甲氧基)-苯基]丙烯酸(H2L2)为主配体,合成了3种钴(Ⅱ)配位聚合物:[Co(L1)(bpp)]n(1),{[Co(μ3-OH)2(L2)4(bpy)2(H2O)4]·12H2O}n(2)和[Co(L2)(bpy)]n(3)(bpp:1,3-二吡啶基丙烷,bpy:4,4-联吡啶)。通过元素分析、红外光谱、X射线粉末和单晶衍射对其进行了结构表征。结果表明钴(Ⅱ)离子在这3种配合物中具有不同的配位环境,导致3种配合物具有不同的晶体结构和磁性特征。     

钴的含氮配体三元配合物的合成及电化学性质研究

合成了钴的三元配合物 [Co(H2 O) (C12 H8N2 ) 3 ](ClO4) 2 ,其结构经元素分析和IR表征。于pH =5 .7的HOAc -NaOAc缓冲溶液中用循环伏安法研究了配体、Co(Ⅱ )离子、Co(Ⅱ )二元及Co(Ⅱ )三元配合物在玻碳电极上的电化学行为。实验结果表明 ,在 - 1.0V～ 1.0V(vs·SCE)Co(Ⅱ )三元配合物在玻碳电极上的电化学行为为可逆氧化还原过程 ,EPa=0 .15 1V ,EPc=0 .0 80V ,ΔEp 约为 70mV。     

光致发光配合物[Au_2(PPh_3)_2(μ-4,4'-bpy)](ClO_4)_2和[Cu_2(PPh_3)_4(CH_3CN)_2(μ-4,4'-bpy)](BF_4)_2的合成和晶体结构

合成了两个在空气中稳定的Au（I）和Cu（I）配合物,并运用元素分析、红外 光谱、荧光光谱和X射线单晶衍射结构表征,[Au_2(PPh_3)_2(μ-4,4'-bpy)] (ClO_4)_2（1）（4,4'-bpy为4,4'-联吡啶）,单斜晶系,空间群P2_1 c,晶胞参 数a = 1.2255(4) nm,b = 0.9973(3) nm,c = 1.8506(6) nm,β = 101.732(5) °,V = 2.2145(11) nm~3,Z = 4,最终偏离因子R = 0.0430,wR = 0.0937。 [Cu_2(PPh_3)_4(CH_3CN)_2(μ-4,4'-bpy)](BF_4)_2（2）,单斜晶系,空间群 P2_1 c,晶胞参数a = 1.3463(3) nm,b = 1.4681(3) nm,c = 2.0608(4) nm,β = 100.387(4)°,V = 4.0066(13) nm~3,Z = 2,最终偏离因子R = 0.0450,wR = 0.1163。两个双核配合物都是利用4,4'-联吡啶桥联配体,形成直线结构,直线 的两端以PPh_3或CH_3CN为端基。Au（I）为2配位,Cu（I）为4配位。两个配合物 均具有光致发光特性,其中配合物1发光来自MLCT激发态,而配合物2则是受配位金 属影响的配体内部发光。     

hree Inorganic-organic Composite Polyoxotungstates:Syntheses, Characterization and Structures of [Cu(2,2'-bpy)2]5[α-PW11.5Cu0.5O40]·2H2O,[Co(2,2'-bpy)2(N3)2]4H3[α-PW12O40]·3H2O and [Cu(2,2'-bpy)2(4,4'-bpy)]2[α-GeW12O40]·4H2O

Three new inorganic-organic composite polyoxotungstates [Cu(2,2'- bpy)2]5[α- PW11.5Cu0.5O40]·2H2O 1, [Co(2,2'-bp3)2(N3)2]4H3[α-PW12O40]·3H2O 2 and [Cu(2,2'-bpy)2(4,4'- bpy)]2[α-GeW12O40].4H2O 3 (2,2'-bpy = 2,2'-bipyridine, 4,4'-bpy = 4,4'-bipyridine) have been hydrothermally synthesized and structurally characterized. 1 crystallizes in the orthorhombie space group Pna21 with α = 27.847(3), b = 21.597(2), c = 20.1179(19) A, V = 12099(2) A3, Z = 4, GOF= 1.038, R = 0.0427 and wR = 0.1035; 2 belongs to the triclinic space group P1 with a= 12.31150(10), b = 16.1954(4), c = 19.36290(10) A, α = 99.366(11), β=105.168(8),γ = 111.836(8)°, V = 3309.98(9) A3, Z = 1, GOF = 1.024, R = 0.0739 and wR = 0.2216; and 3 crystallizes in the monoclinic space group P21/n with a = 12.858(4), b = 20.943(6), c = 15.598(5) A, β = 102.338(5)°, V = 4103(2) A3, Z = 2, GOF = 1.026, R = 0.0557 and wR = 0.1316. The common structural features of 1～3 are that their molecular structures all consist of a saturated a-Keggin polyoxoanion and several discrete metal-organic moieties. Intriguingly, 2 and 3 are composed of metal-organic coordination moieties with two mixed ligands.     

Synthesis and Crystal structure of Poly{[Co(4,4''-bpy)(H2O)4]SO4((4-abaH)2(3H2O}

The title complex has been obtained by the reaction of cobalt sulfate heptahydrate with 4,4'-bpy and 4-abaH (4,4'-bpy = 4,4'-bipyridine, 4-abaH = 4-aminobenzonic acid) in ethanol solution, and its structure was determined by X-ray crystallography with the following data: tetragonal, space group P42/n, Mr = 5692.46, Co8C192H288N32O120S8, a = b = 16.402(5), c = 22.750(5) (A), Z = 1, V = 6120(2) (A)3, F(000) = 2968, Dc = 1.544 g/cm3,μ = 0.707 mm- 1, the final R = 0.0786 and wR = 0.1935 for 2673 observed reflections (I ＞ 2σ(I)). The title complex consists of polymeric [Co(4,4'-bipy)(H2O)4]2+ cation chains, SO42- anions, lattice 4-abaH and water mole cules. The center CoⅡ ions are connected by bridging 4,4'-bpy ligands exhibiting one-dimensional chains, and coordinated by four water molecules into a distorted octahedral geometry. These chains are further extended by hydrogen bonds among SO42- anions, coordinated and lattice water molecules as well as lattice 4-abaH molecules into a three-dimensional network.     

Syntheses and Crystal Structures of Two 1D Chain Coordination Polymers Based on 2-Benzoylbenzoic Acid

Two new coordination polymers,[Co(BYBA)2(4,4'-bpy)(H2O)2]·H2O (1) and [Zn(BYBA)2(4,4'-bpy)] (2) (4,4'-bpy=4,4'-bipyridine,BYBAH= 2-benzoylbenzoic acid),have been synthesized by hydrothermal conditions and characterized by single-crystal X-ray diffraction,elemental analyses,IR spectra and fluorescence spectrum.Crystal data for 1:C38H32CoN2O9,Mr= 719.59,monoclinic,space group P2/c,a=22.981(2),b=11.4438(11),c=12.9327(12),β=94.642(1)°,V=3390.0(5)3,Z=4,Dc=1.410 g/cm3,F(000)=1492,R=0.0488 and wR=0.1201;and those for 2:C38H26ZnN2O6,Mr=672.00,triclinic,space group P1,a=8.7032(10),b=11.4882(13),c=16.872(2),α=107.146(1),β=99.055(1),γ=90.851(2)°,V=1588.5(3)3,Z= 2,Dc=1.405 g/cm3,F(000)=692,R=0.0409 and wR=0.0894.Complex 1 exhibits 1D polymeric chains which are linked into a 2D sheet by π···π interactions.Complex 2 is composed by 1D zigzag chains connected through C-H···π stacking interactions to generate a 2D layer.     

Hydrothermal Synthesis,Crystal Structure and Magnetic Properties of a Cobalt(II) Coordination Polymer Assembled by 4-Sulfophthalate and 4,4'-Bipyridine

1 INTRUDUCTION The rational design and synthesis of metal-direc- ted supramolecular framework have received much attention in coordination chemistry because of their potential applications in catalysis, molecular selec- tion, non-linear optics, ion exchange and microelec- tronics[1～4]. During the lastdecade, many high-di- mensional coordination complexes have been de- signed and prepared through molecular self-as- sembly process[5～10]. The construction of open metal organic framework, s…     

Two Metal-organic Frameworks（MOFs） Assembled from One Asymmetric Semirigid Multicarboxylate Ligand：Syntheses and Crystal Structural Characterizations

Hydrothermal reactions between a new flexible multicarboxylate ligand of 3-(2-carboxy-phenoxy)-benzoic acid(H2L) and transitional metal cations of M2+(M = Cu2+,Ni2+) in the presence of the secondary ligands of 1,10-phenanthroline(phen),2,2'-bipyridine(2,2?-bpy),and 4,4'-bipyridine(4,4'-bpy) afford two novel coordination polymers Ni2(H2O)2L2(phen)(μ-4,4'-bpy)(1) and CuIIL(2,2'-bpy)(2).Both compounds were characterized by X-ray crystallography.Crystal data of 1:C31H24N3NiO7,Mr = 609.24,monoclinic,space group P21/c,a = 17.560(8),b = 10.528(5),c = 30.613(15) ,V = 5659(5) 3,Z = 4,Dc = 1.430 g/cm3,F(000) = 502,μ = 0.739 mm-1,R = 0.0902,wR = 0.1346(I > 2σ(I)),S = 1.002.Crystal data of 2:C24H16CuN2O5,Mr = 475.93,monoclinic,space group P21/n,a = 9.8904(13),b = 11.0782(16),c = 18.321(3) ,β = 11.0782(16)°,V = 1993.8(5) 3,Z = 4,Dc = 1.585 g/cm3,F(000) = 972,μ = 1.137 mm-1,R = 0.0433,wR = 0.0723(I > 2σ(I)) and S = 1.004.Compound 1 displays a one-dimensional(1D) zigzag chain structure constructed from phen ligands and the deprotonated ligands of L2-,which further forms a ladder-shaped supramolecular architecture via the bridge of 4,4'-bpy ligand.Complex 2 also possesses a ladder-shaped architecture based on the dinuclear CuII units.     

Hydrothermal synthesis and characterization of [(UO2)2F8(H2O)2Zn2(4,4'-bpy)2].(4,4'-bpy), a mixed-metal uranyl aquofluoride with a pillared layer structure

A mixed-metal uranyl aquofluoride, [(UO2)2F8(H2O)2Zn2(4,4'-bpy)2].(4,4'-bpy), has been synthesized under hydrothermal conditions and has been structurally characterized by single-crystal X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, emission spectroscopy, and solid-state NMR spectroscopy. It is one of the few uranium fluoride-organic framework solids in which an organic molecule is directly incorporated into the extended structure of the metal fluoride and is the first example of mixed-metal uranium oxyfluoride incorporating an organic ligand. The structure consists of neutral layers of edge- and corner-sharing uranium-centered pentagonal bipyramids and zinc-centered octahedra, which are linked through 4,4'-bpy ligands into a 3-D framework. The 1H MAS NMR spectrum is in support of the conclusion that the occluded 4,4'-bpy molecules in the structural channels are not protonated. Crystal data: monoclinic, space group P2(1)/c, a = 9.4630(5) A, b = 22.384(1) A, c = 16.7534(8) A, beta = 91.899(2) degrees , V = 3546.7(4) A(3) and Z = 4.     

一维4, 4'-联吡啶桥联噻吩甲酰三氟丙酮过渡金属配合物的合成、结构和磁性

本文合成了六个4, 4'-联吡啶桥联配合物: [M(TTA)~2(μ-4, 4'-bipy)]~n,[M=Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II); TTA=噻吩甲酰三氟丙酮], 经元素分析、IR、 1^H NMR和晶体结构分析, 确定配合物具有一维无限链状结构。Mn(II)配合物的晶体属三斜晶系, 空间群PI, 晶胞参数: a=0.9549(2),b=0.9600(3), c=1.1556(3)nm, α=65.99(3), β=83.96(4), γ=68.89(3)°;V=0.9017(4)nm^3; Z=1; Dc=1.417g.cm^-3; μ=5.3cm^-1; F(000)=393; 最终R=0.067。Mn(II)处于畸变八面体配位环境中。由Cu(II)配合物的ESR谱近似了分子轨道系数和键合参数。Mn(II), Cu(II)配合物的变温磁化率表明, 金属离子间磁行为服从Curie定律。     

Novel vanadium(V) compounds with a layer structure: synthesis,crystal structures,and solid state NMR spectroscopy of [(VO(2))(2)(4,4'-bpy)(0.5)(4,4'-Hbpy)(XO(4))] x H(2)O (X = P and As)

A novel vanadium(V) phosphate and the arsenate analogue, [(VO(2))(2)(4,4'-bpy)(0.5)(4,4'-Hbpy)(XO(4))].H(2)O (X = P, As; bpy = bipyridine), have been synthesized under hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction. They are the first structurally characterized compounds in the vanadium(V)/4,4'-bpy/phosphate (or arsenate) systems. The two compounds are isostructural and crystallize in the triclinic space group P macro (No. 2) with a = 7.9063(3) A, b = 10.2201(4) A, c = 12.1336(5) A, alpha = 113.4652(7) degrees, beta = 95.7231(7) degrees, gamma = 94.4447(7) degrees, and Z = 2 for the phosphate, and a = 7.8843(6) A, b = 10.3686(7) A, c = 12.2606(9) A, alpha = 113.464(1) degrees, beta = 95.560(1) degrees, gamma = 94.585(1) degrees, and Z = 2 for the arsenate. The structure consists of phosphate-bridged vanadium(V) double chains linked through 4,4'-bpy ligands to form a sheet with the monoprotonated 4,4'-Hbpy(+) ligand being coordinated to the metal atom as a pendent group. The (1)H MAS NMR spectrum exhibits four resonances at 14.2, 9.5, 7.2, and 3.7 ppm with an intensity ratio close to 1:6:6:2, corresponding to three different types of protons in 4,4'-bpy and 4,4'-Hbpy(+) and one type of protons in H(2)O. The peak at 14.2 ppm can be assigned to the proton bonded to the pyridine nitrogen atom, which confirms the presence of 4,4'-Hbpy(+).     

A Corrugated 2D Mn(Ⅱ) Network:[Mn_3(μ-oxalate)_3(μ-4,4'-bpy)_2(4,4'-bpy)_2]_n

1 INTRODUCTION It is well known that the bi-functional 4,4?-bi- pyridine (4,4?-bpy) has the ability to act as a rigid, rod-like organic building block in the self-assembly of coordination frameworks. Many researches have also been done on the metal oxalate compounds. The remarkable coordination abilities of oxalate and 4,4?- bpy ligands are applied to design and synthesize new polymeric coordination complexes[1～4] containing mixed bridging ligands. Manganese is one of the several first-r…