Schiff碱铜(Ⅰ)配合物的合成、结构及其与DNA相互作用的研究

A Cu(Ⅰ) complex [Cu(INHPy)(PPh₃)₂] ·(ClO₄)·0.75(C₂H₅OH) was obtained through self-assembly between [Cu(PPh₃)₂(MeCN)₂]ClO₄ and Schiff base 2-pyridylcarboxaldehyde isonicotinoyl hadrazone(INHPy), the structure of which was characterized by elemental analysis, IR spectrum and X-ray diffraction. Single crystal X-ray analysis indicates that this compound crystallizes in triclinic system, space group P1 with parameters: a=1.180 7(2) nm, b=1.330 0(3) nm, c=1.568 6(2) nm. α=100.91(1)°, β=108.863(2)°, γ=95.51(2)°. V=2.382 0(7) nm³, Z=4 , D_c=1.332 g·cm^-3, F(000)=1 032, μ=0.634 mm^-1. At the same time, we studied the title complex interacting with DNA with resonance light-scattering spectrum. The results showed that intensities of RLS signal are direct proportion to the concentration of DNA, (ΔI=0.804+23.770C, r=0.995). CCDC: 231388.     

秦岭苦参中苦参碱立体异构体晶体结构研究

从秦岭地区苦参中经过溶剂提取和酸化分离得到一种生物碱盐酸盐结晶1，该 晶体不对称单元含有一对新的苦参碱非对映异构体，绝对构型分别是1S，5S6S， 7R，11R，16S和1S，5S，6S，7R，11R，16R，命名为顺式新苦参碱(cis- neomatrine)和反式新苦参碱(trans-neomatrine)。1的晶体结构(C_(15)H_(24) N_2O·C_(15)H_(24)N_2O·2HCl·5H_2O)属正交晶系，空间群P2_12_12_1, a = 0. 8053(2) nm, b = 1.3464(5) nm, c = 3.0971(9) nm, V = 3.3580(18)nm~3, Z = 4, μ=0.244 mm~(-1), F(000) = 1432, R = 0.0467, wR = 0.1129。顺式新苦参 碱和反式新苦参碱的A环、B环和C环为式构象，D环为半椅式构象，其中A／B为反式 稠合，A／C和B／C为顺式稠合，两种立异构体的区别是顺式新苦参碱的C／D顺式稠 合，反式新苦参碱的C／D反式稠合。     

千解草甲素的晶体和分子结构

千解草(Pygmaeopremna Herbacea)为马鞭草科千解草属植物,分布在中国西南一带,尤以四川南部为多。民间用其茎叶治疗跌打损伤,风湿性关节炎,月经不调,产后瘀血,外感风寒、消化不良等病患,且疗效显著,广为应用。千解草属植物共有五种,均未见有关化学成份的报道。我们从千解草根的乙醚提取物中得到四种晶体,本文报道了具有代表性的千解草甲素的晶体和分子结构(1)。     

碳酸酐酶的化学模拟——含三(取代吡唑)硼氢根的金属配合物[η3-HB(3-Ar-5-Mepz)3]MX(M=Ni,Cu,Zn,Cd;Ar=2''''-thie,Ph;x=Cl,NO3)的合成和表征

合成了标题所示的一系列新的含三(取代吡唑)硼氢根的金属配合物,均通过元素分析、IR、1H NMR进行表征.配合物[η3-HB(3-(2'-thie)-5-Mepz)3]Zn(NO3)·1/2THF(2c)的晶体结构测定表明,硝酸根是以不对称双齿方式与Zn原子配位(Zn-O(2)键长为0.1966(4)nm,Zn-O(3)键长为0.2463(4)nm);而在镉的类似物{[η3-HB(3-Ph-5-Mepz)3]Cd(NO3)(THF)}(2e)中,NO-3则以双齿方式与Cd原子配位[Cd-O键长为0.2334(3)和0.2356(3)nm].NO-3随金属不同取不同方式配位的现象,为解释锌、镉碳酸酐酶的不同活性(与酶活性中心配位的HCO-3是NO-3的等电子体)提供了进一步的依据.配合物2c和2e均为三斜晶系,P-1空间群,Z=2.2c晶胞参数:a=1.16250(10),b=1.2422(2),c=1.32590(10)nm;α=71.410(10)°,β=73.090(10)°,γ=65.660(10)°;R=0.0755.2e品胞参数:a=1.13030(10),b=1.2099(2),c=1.2607(2)nm;α=102.050(10)°,β=91.780(10)°,γ=93.620(10)°;R=0.0302.     

Crystal Structure and Thermal Property of a Binuclear Manganese(II) Sulfate Complex with Carbohydrazide

The binuclear manganese(II) complex of formula [Mn₂(CHZ)₂(H₂O)₂(SO₄)₂] (CHZ = carbohydrazide) (1) has synthesized in aqueous solution and characterized by elemental analysis, IR, and single crystal X-ray diffraction. The compound 1 crystallizes in monoclinic system, space group P2(1)/n, a = 7.083(1) Å, b = 7.985(1) Å, c = 14.045(2) Å, β = 90.46(1)^°, V = 794.42(16) ų, Z = 2, R = 0.0308 with 1481 reflections. In the title complex, two Mn(II) cations are bonded via the bridging oxygen atoms into a centrosymmetric dimeric unit. The Mn(II) dimers are further extended into layers by means of the bridging sulfate groups. Each Mn atom in the complex is in bivalent state with a distorted pentagonal bipyramid configuration and has a N₂O₅ donor set which consists of two nitrogen atoms and five oxygen atoms provided by the ligands of two CHZ molecules, one water molecule, and two sulfate ions. The CHZ tridentate ligands are coordinated with adjacent Mn(II) cation via two terminal N atoms and the carbonyl O atom and sulfate anions act as bidentate bridge ligand. Four kinds of Mn(II) CHZ complex structures are compared. The thermal property of title complex was studied by using DSC and TG-DTG techniques. The results exhibit the title complex is highly stable.     

刺乌头碱氢溴酸盐的合成及晶体结构

报道了以双溴代烷烃和刺乌头碱合成刺乌头碱氢溴酸盐的方法. 用元素分析、红外光谱、高分辨质谱和核磁共振进行了表征. 并用X射线单晶衍射确定了标题化合物的绝对构型. 晶体结构表明, 该化合物通过分子间氢键形成了网状类似超分子结构. 晶体属于单斜晶系, P2₁空间群, 晶胞参数: a＝1.0619(2) nm, b＝1.2196(3) nm, c＝1.2282(2) nm, β＝90.87(1)°, V＝1.59037(54) nm³, Z＝2, D_m＝1.428 g/cm^－3, F(000)＝720.0, µ＝1.349 mm^－1. 环 A, B, C, D, E和F分别呈船式、椅式、信封式、船式、船式和信封式. 其绝对构型被确定为1S,4S,5S,7S,8S,9S,10S,11S,13R,14S,16S,17R.     

Synthesis,crystal structure and magnetic properties of a two-dimensional mixed-valence assembly [Fe(salen)]2[Fe(CN)5NO]

A cyanide-bridged Fe^III–Fe^II mixed-valence assembly, [Fe^III(salen)]₂[Fe^II(CN)₅NO] [salen = N,N-ethylenebis(salicylideneiminato)dianion], prepared by slow diffusion of an aqueous solution of Na₂[Fe(CN)₅NO] · 2H₂O and a MeOH solution of [Fe(salen)NO₃] in an H tube, has been characterized by X-ray structure analysis, i.r. spectra and magnetic measurements. The product assumes a two-dimensional network structure consisting of pillow-like octanuclear [—Fe^II—CN—Fe^III—NC—]₄ units with dimensions: Fe^II—C = 1.942(7) Å, C—N = 1.139(9) Å, Fe^III—N = 2.173(6) Å, Fe^II—C—N = 178.0(6)°, Fe^III—N—C = 163.4(6)°. The Fe^II—N—O bond angle is linear (180.0°). The variable temperature magnetic susceptibility, measured in the 4.8–300 K range, indicates the presence of a weak intralayer antiferromagnetic interaction and gives an Fe^III–Fe^III exchange integral of –0.033 cm^–1.     

镧与β-丙氨酸配合物{[La2(β-ala)6(H2O)4](ClO4)6·H2O}n的合成及晶体结构

The complex, {[La₂(β-ala)₆(H₂O)₄](ClO₄)₆·H₂O}_n, was synthesized in aqueous solution and its crystal structure was determined by X-ray diffraction method .The crystal is triclinic with space group of .The cell pa-rameters are a=0.946(1)nm, b=1.2917(1)nm, c=2.1726(3)nm,α=76.79(1)°, β=80.85(1)°,γ=83.35(1)°, V=2.5429(5)nm³, Z=2, D_c=1.958g·cm^-3.The complex is an one-dimensional infinite chain. The coordination number of lanthanum ion is nine, forming a distorted tricapped trigonal prism.     

Preparation and X-ray Crystal Structure of Di-chlorobis (p-t-butylphenylbutyl Sulfide)Palladium(Ⅱ)

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AGNTO的制备和分子结构

通过3-硝基-1,2,4-三唑-5-酮（NTO）与氨基胍重碳酸盐反应制备NTO氨基胍盐,并用X射线衍射、元素分析、红外光谱对其进行了表征.晶体属于单斜晶系,空间群为P21/n.晶体学参数为：a=0.67870(10)nm, b=2.7915(4)nm, c=1.2739(2)nm; β =96.930(10) V=2.3959(6)nm3, Z=12, Dc=1.698 g•cm －3, μ( Mo K )=1.47 cm －1, F(000)=1272.晶体结构经全矩阵最小二乘法修正,最终偏离因子R=0.0352, wR =0.0718.该盐是一种具有广泛应用前景的产气剂材料.