三个基于3-(2,5-二羧基苯基)-吡啶羧酸的Cu(Ⅱ)、Mn(Ⅱ)配合物的结构及磁性

通过水热法合成了3个新型配位聚合物:[Cu(Hdppa)(H_2O)]_n(1)、{[Cu_2(dppa)(μ_2-OH)(H_2O)]·H_2O}_n(2)和{[Mn_3(dppa)_2(H_2O)_4]·2H_2O}_n(3),(H3dppa=3-(2,5-二羧基苯基)-吡啶羧酸),并对其进行了元素分析、红外光谱、粉末X射线衍射和热重分析表征。X射线单晶衍射分析结果表明:化合物1属于单斜晶系,P21/c空间群,a=1.371(2)nm,b=0.805(11)nm,c=1.266(19)nm,β=112.74(3)°,Z=4;化合物2属于三斜晶系,P1空间群,a=0.839(4)nm,b=1.039(5)nm,c=1.110(5)nm,α=98.31°,β=110.630(3)°,γ=111.90(3)°,Z=2;化合物3属于三斜晶系,P1空间群,a=0.881(6)nm,b=0.939(6)nm,c=1.038(7)nm,α=100.29°,β=97.990(10)°,γ=111.13(7)°,Z=1。化合物1以配体Hdppa2-桥联Cu(Ⅱ)形成一维链状结构;化合物2和3以配体dppa3-分别桥联Cu(Ⅱ)和Mn(Ⅱ)形成二维层状结构,并进一步通过氢键形成三维超分子结构。变温磁化率研究表明在化合物1和化合物2中存在较强的铁磁耦合作用,其磁交换常数分别为4.44和8.94 cm-1;而化合物3中Mn(Ⅱ)离子之间存在反铁磁相互作用。     

3,5-二氯水杨醛锌(Ⅱ)配合物的合成及其晶体结构

以3,5-二氯水杨醛、乙酸锌为原料,经溶剂热法合成了一个新型的单核锌(II)配合物[Zn(Hdcsa)_2(H_2O)_2]_2·(H_2dcsa)_2·2CH_3CH_2OH,H_2dcsa=3,5–二氯水杨醛,并通过红外、元素分析和X-射线单晶衍射对其结构进行表征。配合物属于正交晶系,Pnma空间群,晶胞参数a=1. 75809(6) nm,b=2. 70404(8) nm,c=1. 14334(3) nm,α=β=γ=90°,V=5. 4354 (3) nm~3,Z=4,Dc=1. 749 g·cm~(-3),R_1=0. 0894,ωR_2=0. 2227,S=1. 147。配合物中的Zn(II)处于相同的六配位环境,形成了ZnO_4O_2八面体构型,并通过分子间的O…Cl和Cl…Cl弱作用堆积形成3D结构。     

3-((5-(3-吡啶基)-2-(1,3,4-噁二唑基))硫代)-2,4-戊二酮Cu(Ⅱ)/Zn(Ⅱ)/Mn(Ⅱ)配合物的合成及其晶体结构

将配体3-((5-(3-吡啶基)-2-(1,3,4-噁二唑基))硫代)-2,4-戊二酮(HL)与Cu(OAc)_2·H_2O、Zn(OAc)_2·2H_2O和Mn(OAc)_2·4H_2O分别进行配位反应,得到3个配位聚合物{[Cu_2(L)_4]·CHCl_3}_n(1)、{[Zn(L)_2]·4CHCl_3}_n(2)和{[Mn(L)_2]·4CHCl_3}_n(3),并通过元素分析、红外光谱、粉末X射线衍射、单晶X射线衍射等对配合物的结构进行了表征。在固体状态下,配位聚合物1形成1D螺旋链状结构,配位聚合物2和3形成2D网状结构。     

基于4-甲基-3-苯基-5-(2-吡啶基)-1,2,4-三唑的Cu(Ⅱ)、Ni(Ⅱ)和Cd(Ⅱ)配合物的合成、晶体结构及性质（英文）

4-甲基-3-苯基-5-(2-吡啶基)-1,2,4-三唑(L)分别与CuCl_2·2H_2O、Ni(NO_3)_2·6H_2O、Cu(ClO_4)_2·6H_2O和Cd(NO_3)_2·4H_2O反应合成了配合物[CuL_2Cl]Cl·H_2O(1)、[NiL_2(H_2O)_2](NO_3)_2(2)、[CuL_2(H_2O)_2](ClO_4)_2(3)和[CdL_2(NO_3)_2]·CH_3CN(4),测定了它们的X射线单晶结构,并用红外光谱、紫外光谱、荧光和热重分析进行了表征。配合物1属于正交晶系,空间群为Fddd,中心离子Cu1(Ⅱ)具有畸变的四方锥构型[CuN_4Cl]。配合物2、3和4都属于单斜晶系,空间群分别为P2_1/n,P2_1/n和P2_1/c。配合物2、3和4的中心离子Ni1(Ⅱ)、Cu1(Ⅱ)和Cd1(Ⅱ)都为畸变的八面体构型[NiN_4O_2]、[CuN_4O_2]和[CdN_4O_2]。     

基于5-氨基-1H-1,2,4-三唑-3-羧酸的锌(Ⅱ)/锰(Ⅱ)配合物的合成、晶体结构及性质（英文）

以5-氨基-1H-1,2,4-三唑-3-羧酸(HAtca)为配体,通过水热法和溶液扩散法分别合成了2个新的配合物[Zn(Athy)Br]_n(1,HAthy=5-氨基-1H-1,2,4-三唑-3-醇)和[Mn(Atca)_2(H_2O)_2](2)。单晶结构分析表明配合物1和2分别属于正交和单斜晶系,结晶于Pbca和P2_1/c空间群。配合物1为2D层状结构,2是单核配合物。在配合物1中不存在氢键,而配合物2中含有丰富的氢键作用,并且通过氢键的作用形成了一个三维的网格结构。同时在固态下,配合物1和2分别在360、462 nm和382、402 nm处有较强的荧光发射峰。     

一种五元羧酸与Eu(Ⅲ)、Tb(Ⅲ)配合物的结构及光致发光性质

水热条件下利用一种五元有机羧酸分别与稀土铕和铽的高氯酸盐反应合成了二维配位聚合物{[Eu_4(HL)_2(ox)_2(H_2O)_(10)]·3H_2O}n (1)和{[Tb_2(HL)(ox)(H_2O)_5]·2H_2O}n (2)(H_5L=4-(4-羧基苯基)吡啶-2,3,5,6-四羧酸;ox=草酸根离子)。X射线单晶衍射结构分析表明这2个配合物为同构化合物,属单斜晶系,P21/c空间群。草酸根离子可能是由于部分五元羧酸在水热反应过程中发生分解而产生。稀土离子与五元酸及草酸根配体配位,形成了二维平面结构。配合物1和2分别发射铕或铽离子的红色或绿色特征荧光,其绝对量子产率分别为45%和38%。铕配合物中5D0激发态的寿命为1.83 ms,铽配合物中5D4激发态的寿命为1.07 ms。     

配合物{[Co(5-氨基-8-羟基喹啉)_2]·H_2O}_n的合成及结构研究

以4-[(8-羟基-5-喹啉)偶氮]-苯磺酸与氯化钴为原料,采用溶剂热法通过原位反应合成{[Co(5-氨基-8-羟基喹啉)_2]·H_2O}_n,并通过X-射线单晶衍射方法确定了该配合物的晶体结构.结构分析表明:标题配合物属于斜方晶系,Pbcn空间群,晶胞参数a=1.321(2)nm,b=0.811(2)nm,c=1.511(2)nm,α=β=γ=90.00°,V=1.619(3)nm~3,Z=4,R_1=0.0516,w R_2=0.1025.配合物中存在ππ堆积相互作用和氢键作用,将配合物连接形成三维超分子网络结构.     

5-甲氧基-2-[(E)-(6-甲基吡啶-2-亚氨基)甲基]苯酚的合成与表征

研究了以2-羟基-4-甲氧基苯甲醛和2-氨基-6-甲基吡啶为原料合成新型席夫碱化合物5-甲氧基-2-[(E)-(6-甲基吡啶-2-亚氨基)甲基]苯酚的方法。当2-羟基-4-甲氧基苯甲醛与2-氨基-6-甲基吡啶摩尔比为1∶1.6,反应时间为6 h,反应温度为75℃时,反应产率最高。采用元素分析、UV-Vis、IR、1H NMR、X-射线单晶衍射等方法进行结构表征。该化合物为单斜晶系,空间群P21/c,a=1.1886(3)nm,b=0.65948(16)nm,c=1.6897(4)nm,β=108.505(3)°,V=1.2560(5)nm3,Dc=1.281 g·cm-3,Z=4,F(000)=512,μ=0.087 mm-1,R1=0.0477,wR2=0.1342。通过π···π堆积和分子内氢键O2-H2···N1、C8-H8A···N2形成较稳定的晶体结构,并具有蓝色荧光。     

四羰基双[2,5-二(三甲硅基)-1-甲基环戊二烯基]二铁的合成及反应性的研究

由甲基环戊二烯经两步类似反应向其环上引入两个Me_3Si取代基,生成(Me_3Si)_2-MeC_5H_3,后者与Fe(CO)_5反应除生成预期的双核Fe-Fe键产物[η~5-{(Me_3Si)_2MeC_5H_2}Fe(CO)]_2-(μ-CO)_2(2)外,还分离到少量单核化合物η~5-[(Me_3Si)_2MeC_5H_2]Fe(CO)_2Cl(3),2与碘反应生成Fe-Fe键断裂的单核铁碘化物(4).2经Na/Hg还原生成Fe—Fe键断裂的铁负离子,后者随即分别与数种氯化物反应,生成在铁原子上引入相应取代基的铁衍生物η~5-[(Me_3Si)_2MeC_5H_2]Fe(CO)_2R(R=PhCH_2,5;CH_2COOC_2H_5,6;Ph_3Sn,7;Ph_2SnCl,8).测定了4的晶体结构,晶体属单斜晶系,P2_1/C空间群,晶胞参数.a=0.7333(1),b=2.0089(3),c=1.3323(4)nm;β=92.02(2)°,V=1.962(1)nm~3,Z=4.     

以1-(3-羧苯基)-5-甲基-1氢-1,2,3-三唑-4-羧酸为配体构筑的两个配合物的合成、晶体结构及性质(英文)

1-(3-羧苯基)-5-甲基-1氢-1,2,3-三唑-4-羧酸为配体与锰金属盐、锌金属盐在水热合成法得到2个配位聚合物:{Mn(cpmtc)2(H2O)2}n(1),{Zn(cpmtc)3(H2O)}n(2)。通过单晶衍射仪测得这2个晶体结构,配位聚合物1为单斜晶系,P21/c空间群;a=1.183 52(19)nm,b=1.198 01(19)nm,c=0.998 76(16)nm,β=113.201°。配位聚合物2属于单斜晶系,P21/c空间群;a=1.023 3(3)nm,b=1.172 0(4)nm,c=1.023 3(3)nm,β=92.8700°。除此之外,这2个配位聚合物通过红外和荧光进行表征。     

超分子化合物[H3N(CH2)3NH3]•[Pb2(SIP)2]•6H2O的水热合成与表征

在水热条件下, 用NaH2SIP与Pb(Ⅱ)盐, 以1,3-丙二胺(1,3-PDA)作为结构导向剂进行反应, 得到化合物[H3N(CH2)3NH3]•[Pb2(SIP)2]•6H2O(1). 同时采用单晶X射线衍射、X射线粉末衍射、元素分析、红外光谱和荧光光谱对化合物1进行了表征.     

Synthesis, Crystal Structure and Luminescence Property of [Co(hmz)_2(H_2O)_4]·2H_2O

A new mononuclear Co(II) complex, [Co(hmz)2(H2O)4]·2H2O, has been synthesized by the reaction of Co(CH3COO)2·4H2O with 1-(4-hydroxyphenyl)-5-mercaptotetrazole (Hhmz). It crystallizes in the monoclinic system, space group P21/n with a = 13.502(5), b = 6.718(3), c = 13.972(6) , β = 117.532(4)o, V = 1123.9(8) 3, Z = 2, M r = 553.45, F(000) = 570, Dc = 1.635 g/cm3, μ = 1.008 mm–1, the final R = 0.0272 and wR = 0.0684 for 2194 observed reflections (I > 2σ(I)). The Co(II) is six-coordinated by two nitrogen atoms from two hmz–1 ligands and four water molecules, forming an octahedral geometry. The intermolecular hydrogen bonding and offset-panel π-π stacking interactions between the adjacent molecules extend the compound into a three- dimensional supramolecular framework. The title compound emits strong blue fluorescent light (λem(max) = 427 nm) at room temperature and is red-shifted compared with free ligand Hhmz (λem(max) = 342 nm).     

Synthesis and Crystal Structure of 3,3＇-Bis（2-benzimidazolyl）-2,2＇-dipyridine with Hydrated Zinc（Ⅱ） Perchlorate

The reaction of Zn(ClO4)2·6H2O with 3,3'-bis(2-benzimidazolyl)-2,2'-dipyridine (L) gave a mononuclear zinc(II) complex: [ZnL2](ClO4)2·2DMF·4H2O, which was structurally characterized by EA, IR, UV, 1H NMR, fluorescence spectrum and single-crystal X-ray diffraction. The crystal (C54H54Cl2N14O14Zn, Mr = 1259.38) belongs to the monoclinic system, space group C2/c with a = 20.874(2), b = 14.9953(16), c = 20.462(3) , β = 101.553(2)°, V = 6274.8(13) 3, Z = 4, Dc = 1.333 g/cm3, F (000) = 2608, μ(MoKα) = 0.548 mm–1, R = 0.0682 and wR = 0.1931 for 4984 observed reflections with I > 2σ(I). The Zn(II) is four-coordinated in a slightly distorted tetrahedral geometry through four N atoms from four benzimidazole units of two ligands. In the crystal lattice, the [ZnL2]2+ cations are linked to each other by extensive intermolecular hydrogen bonds between nitrogen atoms of benzimidazole rings, water and DMF molecules.     

达比加群酯中间体3-【【【2-{[(4-氰基苯基)氨基]甲基}-1-甲基-1H-苯并咪唑-5-基】羰基】(吡啶-2-基)氨基】丙酸乙酯的合成

以对氨基苯腈为起始原料,经胺化反应制得N-(4-氰基苯基)甘氨酸(4);4与N-[3-氨基-4-(甲基氨基)苯甲酰基]-N-2-吡啶-β-丙氨酸乙酯(5)经酰胺化后经闭环反应,合成了达比加群酯的关键中间体——3-【【【2-{[(4-氰基苯基)氨基]甲基}-1-甲基-1H-苯并咪唑-5-基】羰基】(吡啶-2-基)氨基】丙酸乙酯,总收率79.6%,其结构经~1H NMR和ESI-MS确证。     

新型环形聚阴离子[{WO(H_2O)}_3(AsW_8O31)_3]~21-的结构及表征

在pH=3.0的水溶液中，Na_2WO_4·2H_2O与NaAsO_2·6H_2O和NH_4Cl反应，得 到了新的杂多钨酸盐(MH_4)_19Na_2[{WO(H_2O)}_3(AsW_8O31)_3]·45H_2O单晶， 用X射线单晶衍射法及元素分析确定了其结构，晶体属单斜晶系，空间群C2/c，晶 胞参数为：a=3.1165(11)nm, b=1.7388(7)nm, c=2.2789(9)nm, β=97.342(6)°, V=12.248(8)nm~3, Z=4, R_1=0.0571,wR_2=0.0741[I＞2σ(I)]. 环型聚阴离子 [{WO(H_2O)}_3(AsW_8O31)_3]~21-是由三个{WO(H_2O)}桥连三个新发现的 {AsW_8O31}单元构成的，环聚离子[{WO(H_2O)}_3(AsW_8O31)_3]~21-具有近似D_ (3h)对称性。对该化合物还进行了~183W NMR, IR和TG表征。     

[Ni(PMBPTSC)(H2PMBPTSC)]·C2H5OH·2H2O的合成、 结构和非等温热分解动力 学

报道了标题配合物[Ni(PMBPTSC)(H2PMBPTSC)]·C2H5OH·2H2O的制备,晶体结构及非等温热分解动力学,该晶体属单斜晶系,空间群Pn,a=1.0376(3)nm,b=1.1522(3)nm,c=1.7591(3)nm;β=90.75(2)°;V=2.1028(8)nm^3;Z=2,Dc=1.329g/cm^3;μ=0.614mm^-1;F(000)=880.根据TG-DTG曲线,运用Achar法与Coats-Redfer法对配合物第一步热分解反应进行了非等温热分解动力学研究,其机理为三维扩散机理,动力学方程为da/dt=Ae^-E/RT3/2(1-α)^2/3[1-(1-α)^1/3]^-1,动力学补偿效应表达式为lnA=0.307915E-1.20469.     

Synthesis and Crystal Structure of an Ionic Compound [Fe(CN)_6(phCH_2NC_5H_5)3]·(H_2O)_4

A novel ionic compound [Fe(CN)6(phCH2NC5H5)3]·(H2O)4(Mr = 794.71) has been synthesized and its structure was characterized by IR, elemental analysis and X-ray diffraction. The compound crystallizes in monoclinic, space group P21/c with a = 10.837(2), b = 16.551(3), c = 23.402(5) , β = 97.531(4)o, V = 4161.0(15) A3, Z = 4, Dc = 1.269 g/cm3, F(000) = 1668, μ = 0.414 mm-1, R = 0.0479 and wR = 0.1232. The building unit of the title compound consists of three (phCH2N+C5H5) ions, one [Fe(CN)6]3- anion and four water molecules. According to the structural analysis, [Fe(CN)6]3- are linked together by O–H···N and O–H···O hydrogen bonds, but [Fe(CN)6]3- and [(phCH2N+C5H5)3] ions are bound by electrostatic force to form an ionic compound.     

Synthesis and THF Accompanied Crystal Structure of 11H-Naphtho[1',2':5,6]- pyrano[2,3-d]pyrimidin-11(10H)-one

8,9,12-Trihydro-9,9-pentamethylene-12-(3-nitrophenyl)-11H-naphtho[1',25,6]-pyrano[2,3-d]pyrimidin-11(10H)-one 1,another conversion product of Friedlndler reaction,has been synthesized by the reaction of 2-amino-4-(3-nitrophenyl)-4H-benzo[f]chromene-3-carbo-nitrile 2 with cyclohexanone in the presence of Lewis acid catalysts.The crystal of the title compound 1 THF solvate,C60H62N6O10,was obtained and determined by X-ray diffraction me-thod.The crystal is of triclinic,space group P with a = 11.4633(11),b = 12.6247(12),c = 19.658(2) ,α = 72.642(8),β = 89.045(9),γ = 68.340(5)°,V = 2509.6(4),Z = 2,Dc = 1.359 g/cm3,F(000) = 1088,Mr = 1027.16,the final R = 0.0674 and wR = 0.1869 with Ⅰ > 2σ(Ⅰ) and the goodness-of-fit S = 1.045 on F2.The pyrimidine ring has an envelope conformation,linked with a six-membered ring through a spiro C atom.The crystal packing of 1 THF solvate is stabilized by N-H···O hydrogen bonds,and π-π stacking interaction occurs between two adjacent nearly planar molecules of 1.     

三维金属有机骨架微孔晶体化合物Cd5(BTC)4(H2O)8·6H2O的合成与晶体结构

通过改变合成条件合成了最大宽度达到2.6 nm的特殊“Z”字形孔道的新型金属有机骨架微孔晶体化合物Cd5(BTC)4(H2O)8·6H2O, 并通过ICP、元素分析、热重(TGA)和X射线单晶衍射分析对其进行了表征.     

Synthesis, Crystal Structure and Electrochemical Properties of [Ni(phen)_3]·(m-nitrobenzoic acid)_2·(H_2O)

A new nickel(II) coordination complex [Ni(phen)3]·(m-nitrobenzoic acid)2·(H2O) was synthesized by self-assembly of m-nitrobenzoic acid, 1,10-phenanthroline and nickelous per- chlorate. It crystallizes in the monoclinic system, space group C2/c, with a = 2.4596(6), b = 1.2124(3), c = 1.9824(5) nm, β = 97.088(5)o, V = 5.866(3) nm3, Dc = 1.474 g/cm3, Z = 4, Mr = 1301.82, μ(MoKα) = 0.417 mm-1 F(000) = 2688, R = 0.0493 and wR = 0.1025. Structural deter- mination indicates that the nickel(II) ion is coordinated with six nitrogen atoms from three phens, giving a distorted octahedral coordination geometry. The cyclic voltametric analysis shows that the electron transfer in the electrode reaction is irreversible.