2,4-二硝基苯丙氨酸钠盐·2,4-二硝基苯丙氨酸的合成、分子结构和二次谐波效应

合成了一种新的有非线性光学性能的标题化合物晶体NaAP·HAP,晶体属正交晶系,空间群为P2₁2₁2₁,a=25.773(6),b=12.377(3),c=7.2037(6)Å,z=4,D_c=1.54g·cm^-3。晶体结构由HAP分子(2,4-二硝基苯丙氨酸)、AP^-离子和Na⁺离子组成。Na⁺离子由周围的六个氧原子形成扭曲的八面体配位。这些NaO₆八面体通过共点形成无限链状结构。可用晶体结构的空间因素来解释实验测定的MAP和NaAP·HAP的二次谐波相对强度的顺序。     

5-磺基水杨酸二钠的晶体结构

应用X射线衍射方法测定了三水合磺基水杨酸二钠的晶体结构。晶体属正交晶系,晶胞参数为:a=23.010,b=9.314,c=5.461,Z=4,空间群Pca2_1。由重原子法和直接法解出结构,并经全矩阵最小二乘法修正,最后的R=0.067。从晶体结构的测定得出其分子式应为(Na+(H_2O)_3]·C_6H_3(COO-)(OH)-(SO_3Na)。水杨酸分子基本上呈平面型,分子中的两个Na~+离子都成扭歪的八面体配位。其中的Na~+(2)离子又与三个水分子形成链状[Na~+(H_2O)_3],并由于链间的氢键的相互交联而成为层状结构。     

由4-甲基-1,2,3-噻二唑-5-甲酸构筑的过渡金属配合物的合成、晶体结构及与DNA作用

以4-甲基-1,2,3-噻二唑-5-甲酸(C_4H_4N_2O_2S,HL)分别与硫酸钴(CoSO_4·7H_2O)、氯化铜(CuCl_2·2H_2O)、硝酸银(AgNO_3)反应合成了3个配合物[Co(L)_2(H_2O)_4]·2H_2O(1)、[CuNa(L)_3]_n(2)和[AgL]_n(3),用元素分析、红外光谱、热重分析进行表征,用单晶X射线衍射测定了产物的结构。配合物1属于三斜晶系,空间群P1,Co~(2+)的配位数为6,形成一个略为拉长的CoN_2O_4八面体,与理想的正八面体非常接近。配合物2属于三斜晶系,空间群P1。Cu~(2+)离子的配位数为4,构成变形的平面四边形结构,Na~+离子的配位数为6,构成一个略微变形的八面体结构,最终形成三维网状结构。配合物3属于单斜晶系,空间群P21/c,银离子为三配位,构成变形的平面三角形构型,具有二维网状结构。用溴化乙锭荧光探针法测定了配体和配合物与DNA作用的荧光光谱。     

三(3,5-二甲基吡唑)氢合硼酸钾及双[三(3,5-二甲基吡唑)]氢合硼酸根合铜(Ⅱ)的合成和晶体结构

为研究吡唑硼类配体的配位行为,合成了三(3,5-二甲基吡唑氢合硼酸钾[KHB(G_5H_7N_2)_3],简称(KL)和双[三(3,5-二甲基吡唑)氢合硼酸根]合铜(Ⅱ){Cu[HB(C_5H_7N_2)_3]_2},简称(CuL_2),并测定了它们的晶体结构。化合物KL属空间群P2_1/n。a=1.0527(8),b=0.9464(3),c=1.7730(9)nm,β=94.51(5)°,Z=4,D_0=1.268g·cm~(-3),R=0.079。化合物CuL_2属空间群PI,a=0.8768(1),b=1.0170(2),c=1.0859(1)nm,a=62.45(1),β=83.78(1),γ=78.52(1)~°,Z=2,D_0=1.298g·cm~(-3),R=0.062。晶体结构测定结果表明:化合物KL由钾离子和配体负离子组成,K~+与配体L中的B原子相距0.3634nm,在配体负离子中B原子与三个吡唑环的N原子及H原子形成四面体构型。化合物CuL_2由孤立分子组成,铜离子处于分子的对称中心且与两个配体分子中的六个N原子形成六配位的八面体构型,并表现出明显的Jahn-Teller效应。     

水合1-苯基-3-甲基-4-三氟乙酰基吡唑酮-5(HPMTFP)与铕(Ⅲ)配合物的晶体结构

[Eu(PMTFP)_3·(H_2O))2)·H_2O的单晶用ENRAF-NONIUS CAD4型四圆衍射仪收集衍射数据进行结构分析。最终偏离因子R=0.046。晶体属空间群P2_1/a。晶胞参数a=16.055(2),b=16.016(3),c=17.752(5),β=106.41(2)°,Z=4。结构分析证实,Eu与配体的六个氧以及二个水分子中的氧形成八配位的稍畸变三角十二面体结构。氢键是连按配位分子形成晶体的主要键力,[Nd(PMTFP)_3·(H_2O)_2]·H_2O单晶的晶胞参数与之相近,有类似的分子与晶体结构。     

开环夹心化合物.Ⅶ. 二(2,4-二甲基戊二烯)羰基钒的合成及其低温X射线结构分析

合成了开环夹心化合物[2,4-(CH_3)_2C_5H_5]_2VCO在低温(约-60℃)下,收集样品的单晶X射线衍射数据,用重原子法解出其晶体结构。晶体属正交晶系,空间群P2_12_12_1。其晶胞参数为:a=9.921(6),b=9.899(6),c=14.491(8)A,Z=4。经块矩阵最小二乘法修正,得最后R=0.087。     

十二员一氧三氮杂环配合物的研究——Ⅰ.1-氧-4,7,10-三氮杂环十二烷及其含钯加合物的合成、性质和结构

本文对合成的1-氧-4,7,10-三氮杂环十二烷和它的含钯加合物进行了元素、红外、核磁、质谱和热分析;并对加合物做了单晶结构测试。加合物晶体属正交晶系,空间群为P2_12_12_1;晶胞参数为a=10.474(2),b=11.632(2),c=14.674(3),AZ=4。结构的偏离因子R=0.052。加合物中,钯(Ⅱ)与四个氯形成平面四边形配位,以H_2PdCl_4分子存在,冠醚环上的一个N原子与HCl的H~+结合形成铵鎓离子,分子式为NHC_2H_4OC_2H_4N H_2C_2H_4NHC_2H_4C1·H_2PdC1_4·H_20.     

含能配合物[Mn(DAT)6](ClO4)2的合成、晶体结构、热行为及感度性质

合成了新型含能配合物[Mn(DAT)6](ClO4)2(DAT=1,5-二氨基四唑), 用X射线单晶衍射法测定了其晶体结构. 该晶体属三方晶系, P3c1空间群, a=b=1.18435(17) nm, c=1.3081(3) nm, α=β=90°, γ=120°, V=1.5891(5) nm3, Z=2. 该配合物分子结构单元中有1个Mn2+离子、6个DAT分子和2个ClO4-离子. 由6个DAT分子中的6个N原子与中心Mn2+离子配位形成六配位、非中心对称的畸变八面体结构. 利用元素分析、差示扫描量热分析(DSC)、热重-微分热重分析(TG-DTG)等方法进行了表征, 研究了其感度性能. 研究结果表明, 该配合物对外界刺激具有很高的响应性和危险性.     

钴与吡啶-2,6-二甲酸和邻菲咯啉三元配合物的合成与晶体结构

合成了钴(Ⅱ)与吡啶-2,6-二甲酸和邻菲咯啉三元配合物Co(DPC)(phen)(H_2O)]·2H_2O(DPC=C7H3O4N;phen=C12H8N2·H_2O),并获得其单晶。晶体学数据如下：C19H17CoN3O7, Mr = 458.29,三斜晶系, P空间群。 a = 7.818(1), b = 9.290(2), c = 14.048(3) ?, α = 81.477(1), β = 81.456(8), γ = 72.970(2)°, V = 958.7(3) ?3, Z =2, F(000) = 470, Dc= 1.588Mg/m3, μ(MoKα) = 0.944mm-1。中心Co(Ⅱ)离子为6配位,6个配位原子形成一个畸变的八面体构型。     

三齿配体酰(氧)钒配合物的晶体结构研究——Ⅰ.双聚{1-(2,4-戊二酮-(3-硝基苯甲酰)-单腙-2-乙氧基合氧钒(Ⅳ)}和双聚{1-(2,4-戊二酮-(3-硝基苯甲酰)-单腙-2-甲氧基合氧钒(Ⅳ)的晶体结构

以二乙酰丙酮氧钒VO(Acac)_2与间硝基苯甲酰肼m-NO_2PhCONHNH_2分别在乙醇和甲醇中反应,得[VO(C_(12)H_(12)N_3O_4)(C_2H_5O)]_2(Ⅰ)和[VO(C_(12)H_(12)N_3O_4)(CH_3O)]_2(Ⅱ)两种晶体。晶体(Ⅰ)属空间群P(?),晶胞参数a=8.123(2),b=10.409(5),c=10.822(4),α=65.78(3)°,β=85.50(3)°,r=89.04(3)°。晶体(Ⅱ)属空间群P2_1/a,a=7.745(2),b=19.164(5),c=10.787(4),β=107.87(2)°。两个晶体均具有共同的结构特征:通过缩合形成的三齿配体占据四个赤道配位位置中的三个,男一个赤道配位位置由醇氧基RO~-所补充而RO~-中的氧原子又兼作桥氧向另一个钒原子的第六位配位,从而导致文献中未报道过的新型双核钒配合物的形成。     

THE CRYSTAL STRUCTURE AND SECOND-HARMONIC EFFECT OF COMPOUND C_9H_9N_3O_6· C_5H_5N

<正> The title compound (PAP) with excellent nonlinear optical prpper-ties has been synthesized. CHCHSCOO , monoclinic with space group P21, a = 4. 521(1), b = 9.601(6), c=17. 892(2)(?) , β=96. 12(1)°, V =772.8(?)3, Z = 2, Dc=1.44g · cm-3, F(000)-348, μ= 1.24cm-1. The second-harmonic intensities of PAP, MAP and NaAP HAP were measured,with the values which are 100, 50, 5. 0 times as large as that of KDP, respectively, Indicating that PAP is a new NLO crystal.     

Synthesis andCrystal Structure of{[Mn（H2O）4（3,3′—azpy）]（3,3′—azpy）3（PF6）2}n

The complex {[Mn(H2O)4(3, 3?-azpy)](3, 3?-azpy)3(PF6)2}n (3, 3?-azpy = 3, 3?- azobispyridine) has been synthesized and characterized. The crystal (C40H40F12MnN16O4P2, Mr = 1153.76) belongs to the triclinic system, space group P ī with the following crystallographic parameters: a = 10.761(2), b = 11.040(2), c = 23.365(4) ?, ( = 85.52(1), ( = 82.69(1), ( = 70.44(1)°, V = 2592.5(8) ?3, Dc = 1.478 g/cm3, ((MoK() = 4.16 cm-1, F(000) = 1174, Z = 2, final R = 0.0493 and wR = 0.1158 for the observed reflections (I > 2.00((I)). The X-ray analysis revealed that manganese(Ⅱ) cation coordination environment is a distorted octahedral geometry, and the Mn2+ cation is coordinated by four oxygen atoms of water in the equatorial plane, while the two nitrogen atoms of 3, 3?-azpy occupy the axial positions. The complex forms a one-dimensional chain structure via 3, 3?-azpy bridging ligand.     

Synthesis and Crystal Structure of Cubane—typeMolybdenum Cluster ComplexMo4S4（DTP）4[μ—SOP（OEt）2]2

1 INTRODUCTION Trinuclear molybdenum complexes with Mo3(3-S)(-O)n(-S)3n (n = 0~3) cores have been extensively studied on their diversified reactions towards various organic ligands and many metals. Many derivatives with Mo3S4 core have been rationally synthesized from the cation precursor [Mo3S4(H2O)9]4+ and its neutral derivative Mo3(3-S)(-S)3(DTP)4(H2O)[1]. However, due to their structural lability, complexes with Mo3(3-S)(-O)n(-S)3n (n = 1~3) cores have been reported limitedl…     

Synthesis and Crystal Structure of a Copper(Ⅱ) Complex with 2,4-Dihydroxybenzylidene Benzoylhydrazone Ligand

A new copper(Ⅱ) complex with formula CuL(py), where L2- is the dianion of 2,4-dihydroxybenzylidene benzoylhydrazone, has been synthesized and characterized by IR spectra and single-crystal X-ray diffraction method. The crystal belongs to monoclinic, space group P21/c with a = 0.9630(4), b = 1.4808(6), c = 1.2320(5) nm, β= 104.969(6)°, V= 1.6973(11)nm3, Z = 4, Dc = 1.553 g/cm3, μ(MoKa) = 1.311 mm-1, F(000) = 812, R = 0.0694 and wR = 0.1727 for 1511 observed reflections (I ＞ 2σ(Ⅰ)). The crystal structure analysis indicates that the copper(Ⅱ) ion lies in a distorted square-planar environment composed of two oxygen atoms, one nitrogen atom from the tridentate acylhydrazone Schiff base ligand L2- and one nitrogen atom teractions to form dimers, which are further linked to generate a two-dimensional layer structure via interdimeric hydrogen bonds.     

[Nd_2O(C_5H_5)_6](C_12H_9N_2)3Cl·mC_4H_8O的晶体结构

本文报告用单晶X-射线衍射法测定[Nd_2O(C-5H_5)_6](C_(12)H_9N_2)_3C1·mC_4H_5O的晶体结构。晶体属于单斜晶系,空间群为P2-1/c,晶胞参数为a=20.982(15),b=11.217(7),c=32.954(32),β=104.17(7)°;Z=4。Nd和C1原子坐标用直接法定出,其他原子坐标以差Fourier方法求得,经过最小二乘法修正,R因子为0.159。在分子中三个茂环皆通过η~5。键与Nd原子配位,两个Nd原子间存在桥氧原子,因而形成(Nd_2O(C_5H_5)_6)~(2-)阴离子,Nd-C键基本上属于离子键。三个邻菲罗啉基团通过氢键与C1原子连接形成大的阳离子[(C_(12)H_9N_2)3-C1]~(2+)。     

Synthesis and Crystal Structure of a Copper(II) Complex with 2,4-Dihydroxybenzylidene Benzoylhydrazone Ligand

1 INTRODUCTION The chemical properties of acylhydrazones Schiff bases and their complexes with some transition metal ions have been intensively investigated in several re- search areas because of their chelating capability and pharmacological applications[1～10]. Intriguingly, the copper(II) complexes are shown to be signifycantly more potent than the metal free chelate, suggesting that the metal complex is the biologically active species. Owing to the biological interest in these types …     

Synthesis and Crystal Structure of a Zinc(II) Complex Salt with the Schiff Base of Picolinaldehyde N-oxide and Semicarbazone

1 INTRODUCTION The donor properties of pyridine N-oxide and its substituted derivatives to form metal complexes have been widely investigated[1～3]. The resulting comple- xes were used as drugs[4] and catalysts[5]. So far, there have been a few reports on the synthesis of Schiff base derived from picolinaldehyde N-oxide with se- micarbazone (PNOS Scheme 1) and its metal com- plexes. And crystal structures of the complexes of PNOS with Au(III)[6], Pd(II)[7] and Cu(II)[8] were re- …     

Synthesis and Crystal Structure of a Zinc(Ⅱ) Complex Salt with the Schiff Base of Picolinaldehyde N-oxide and Semicarbazone

The title zinc(Ⅱ) complex salt [Zn(H2O)6](ClO4)2·(PNOS)4, where PNOS is derived from picolinaldehyde N-oxide with semicarbazone, has been prepared and structurally characterized by X-ray single-crystal analysis. It crystallizes in triclinic, space group P1 with a = 7.529(3),b = 10.206(4), c = 14.678(6) A, α = 86.293(6), β = 87.686(7), γ= 81.382(6)°, C28H44Cl2N16O22Zn,Mr = 1093.06, V= 1112.3(8) A3, Z = 1, Dc = 1.632 g/cm3, S = 1.089,μ(MoKα) = 0.773 mm-1 ,F(000) = 564, the final R = 0.0438 and wR = 0.1076 for 3888 independent reflections with Rint =0.0224. The crystal structure possesses a [Zn(H2O)6]2+ cation, two ClO4- anions and four PNOSs.In the crystal structure, Zn2+ cation is located at the symcenter and coordinated by six water molecules. In [Zn(H2O)6]2+, an elongate octahedral complex cation, the average Zn-O bond length is 2.087(2) A. There exist a lot of H bonds in the structure, linking the cation [Zn(H2O)6]2+, anion ClO4-and PNOS to form a 3D network.     

Synthesis and Crystal Structure of a Novel Hetero-bimetallic Complex with a Three-dimensional Network Structure: Bis(malonato)tetra(aqua)calcum(Ⅱ)cobalt(Ⅱ)

The title complex [CaCo(C3H2O4)2(H2O)4]n with a formula of C6H12CaCoO12 and Mr = 375.17 has been synthesized and structurally characterized by X-ray diffraction. The crystal is of monoclinic, space group C2/c with a = 14.195(9), b = 7.708(5), c = 13.441(8) (A),β = 119.575(9)°,V = 1279.0(14)(A)3, Dc = 1.948 g/cm3, μ = 1.803 mm-1, F(000) = 764 and Z = 4. The final R =0.0245 and wR = 0.0652 for 1344 observed reflections with I ＞ 2o(I). The structure of the title complex consists of CaO8 polyhedra and CoO6 octahedra linked together by malonate ligands. The Ca(Ⅱ) cation on a twofold axis is coordinated by two water molecules and six malonate O atoms.The Co(Ⅱ) cation which lies in a centre of symmetry in an octahedral arrangement is coordinated by four malonate O atoms and two water molecules. The structure comprises alternating layers along the [101] plane, with the shortest Co-Co distance of 6.961(5) (A). The whole 3D structure is maintained and stabilized by the presence of hydrogen bonds.