1-苯基-3-甲基-4-苯甲酰基-吡唑啉酮-5与Mn(Ⅱ)配合物的合成和晶体结构

苯基甲基苯甲酰基吡唑啉酮;抑菌活性;1-苯基-3-甲基-4-苯甲酰基-吡唑啉酮-5与Mn(Ⅱ)配合物的合成和晶体结构     

1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮(HPMBP)缩甘氨酸甲酯的合成、表征和晶体结构

合成了化合物1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮(HPMBP)缩甘氨酸甲酯,用红外光谱、核磁共振谱和元素分析等方法进行了表征,用X射线衍射方法测定了其晶体结构.晶体学参数如下:三斜晶系,空间群为P1, a=0.9403(3) nm, b=0.9884(3) nm, c=1.0127(3) nm, α=86.666(7)°, β=89.827(6)°, γ=73.951(6)°, V=0.9029(5) nm3, Z=2, Dc=1.285 Mg·m-3, μ=0.088 mm-1, F(000)=368.最终偏离因子R1=0.0452, wR2=0.0889.     

4-双(1-苯基-3-甲基-4-吡唑啉-5-酮)甲烷的晶体结构

杂环化合物1 苯基 3 甲基 4 吡唑啉 5 酮(ＨＰＭＰ)为β 二酮,不仅可用作金属离子的萃取剂,还可用于核磁共振的位移试剂,也可用于激光、催化、生化、医学等领域[1-4]。我们从ＰＭＰ出发,合成了它的Ｃｏ(Ⅱ),Ｎｉ(Ⅱ),Ｃｕ(Ⅱ)和Ｚｎ(Ⅱ)的络合物[5,6]。利用单晶Ｘ 射线衍射分析方法报道了标题化合物的晶体结构。1　实验部分在合成ＰＭＰ席夫碱化合物的过程中,得到标题化合物的单晶体。元素分析结果(括号内为计算值)Ｃ%:69 87(69 98),Ｈ%:5 62(5 59),Ｎ:15 61(15 55)。红外光谱(ＫＢｒ):1645和1637ｃｍ-1的强吸收峰归属为羰基的伸缩振动,…     

1-苯基-3-甲基-4-甲酰基-5-吡唑啉酮Cu(Ⅱ)配合物的合成及晶体结构

A novel Cu(Ⅱ) complex of 1-phenyl-3-methyl-4-acyl-5-pyrazolone was synthesized and crystallogra-phically characterized. The single-crystal structure of the complex reveals that the crystal belongs triclinic, space group P1 with cell parameters a=0.938 7(4) nm, b=1.124 4(5) nm, c=1.222 3(5) nm, α=99.538(7)°, β=104.049(8)°, γ=113.806(6)°, and Z=2, V=1.093 3(8) nm³. Cu(Ⅱ) ion is coordinated by two 1-phenyl-3-methyl-4-acyl-5-pyrazolone ligands, and one methanol molecule giving a coordination number of five, the coordination polyhedron around Cu(Ⅱ) ion can be described as a square pyramid. Two complex units link to each other through the hydrogen-bonding interactions to form a dimer. Meanwhile, a staircase-like layer structure was built up by offset face-to-face π…π stacking interactions and weak interactions between the dimers. CCDC: 625422.     

1-苯基-3-甲基-4-(4-羟基-3-甲氧基)-苯甲叉-吡唑啉酮的微波合成和晶体结构

标题化合物C18H16N2O3是由香草醛和1-苯基-3-甲基-吡唑啉酮用微波辐射反应得到,结构通过单晶X-射线衍射法确定,其晶体属单斜晶系,空间群P21/c,Mr = 308.33, a = 21.101(4), b = 7.984, c = 20.076 ? = 115.81(1)? V = 3044.8(8) ? Z = 8, Dc = 1.345 g/cm3, = 0.093 cm-1, F(000) = 1296, 最终的偏离因子为R = 0.0403, wR = 0.0780, 分子之间存在氢键,形成了网状结构。     

1-苯基-3-甲基-4-苯甲酰基吡唑啉酮-5与胺类缔合研究

1-苯基-3-甲基-4-苯甲酸基毗哇琳酮一5（HPMBP）是一类酸性鳌合革取剂,已广泛用于多种元素分离、分析研究［'j．它不仅在单独使用时能很好地革取金属,而且在与有机胺类共同使用时对稀土元素、过渡金属元素有明显的快同革取性能L'·'］．因此研究HPMBP与胺类的相互作用对于分析产生协同作用的原因,改善革取性能是很有必要的．1实验部分1．1试剂HPMBP,化学纯（北京试剂厂）;三千胺（TOA）,FLUKA进口分装试剂,纯度大于99％;伯胺N1923,工业级（上海有机化学研究所化学实验厂）,经减压（267～533Pa）蒸馏,收集413～459K馏…     

N-(1-苯基-3-甲基-4-苯亚甲基-5-吡唑啉酮)对硝基苯甲酰肼(PMBP-PNH)的合成和晶体结构

合成了标题化合物(C24H19N5O4,Mr = 441.44),晶体属单斜晶系,P21/n空间群,晶胞参数为: a = 9.151(2) , b = 18.405(5) , c = 13.061(3) , = 101.12(1), V = 2158.5(9) 3, Z = 4, Dc = 1.358 g/cm3, = 0.096 mm-1, F(000) = 920, R = 0.0468,wR = 0.1090。分子间以氢键形成二聚体。     

2-(1-苯基-3-芳基吡唑4-基)-3-芳酰氨基4-噻唑啉酮的合成

1-苯基-3-芳基-4-甲酰基吡唑与芳酰肼在乙醇中回流,缩合所得的腙在巯基乙酸作用下,合环得到2-(1-苯基-3-芳基吡唑-4-基)-3-芳酰氨基-4-噻唑啉酮类化合物,其结构经IR,MS,1HNMR谱和元素分析确证。     

1-苯基-3-甲基-4-苯甲酰基-吡唑啉酮-5(HPMBP)的金属离子配合物的结构研究——Ⅰ.HPMBP及其配合物Cu(PMBP)_2的晶体结构

本文研究了Cu(PMBP)_2和HPMBP的单晶体结构,晶体学参数为:(1)HPMBP,C_(17)H_(14)0_2N_2,M=278.31,单斜晶系,空间群P2_1/a,a=11.406(5),b=9.087(1),c=13.467(3)(?),β=90.76(3)°,V=1395.7(?)~3,Z=4,D_c=1.324g cm~(-3),μ=0.95cm~(-1).(2)Cu(PMBP)_2,C_(34)H_(26)O_4N_4Cu,M=618.16,单斜晶系,空间群P_2_1/c,a=6.809(3),b=23.722(8),c=9.102(3)(?),β=108.94(4)°,V=1390.7(?)~3,Z=2,D_c=1.476g cm~(-3) μ=8.67cm~(-1).结果表明,HPMBP具有烯醇式结构,其中两个给体氧原子处于有利于形成六元螯合环的几何位置;在配合物Cu(PMBP)_2中,Cu原子为对称中心,两个配体中的四个氧原子形成以Cu为中心的近似平面正方形的配位结构,Cu-O距离分别为1.906和1.896(?).     

4-(2′-羟基苯甲酰肼)苯亚甲基/亚乙基-5-甲基-2-苯基-2,4-二氢-吡唑啉酮-3超分子化合物的合成与晶体结构

报道了 4 (2′ 羟基苯甲酰肼 )苯亚甲基 5 甲基 2 苯基 2 ,4 二氢 -吡唑啉酮 3 (B1)和 4 (2′ 羟基苯甲酰肼 )亚乙基 5 甲基 2 苯基 2 ,4 二氢 -吡唑啉酮 3 (B2 )的合成、表征及晶体结构分析 ,B1晶体属单斜晶系 ,C2 /c空间群 ,所得晶胞参数为 :a =1.42 0 1(2 )nm ,b =1.65 5 42 (2 )nm ,c =1.845 5 (3 )nm ,β =10 1.3 2 (1)° ,V =4.2 5 41(10 )nm3 ,Z =8,Dc=1.3 44g/cm3 ,μ =0 .0 94mm-1,F(0 0 0 ) =180 8,R =0 .0 44 2 ,wR =0 .10 3 7.该化合物由水分子通过氢键连接成沿ac面无限延伸的二维网络结构的超分子 .B2 晶体属三斜晶系 ,P 1空间群 ,a =1.2 12 0 (2 )nm ,b =1.2 2 2 3 (2 )nm ,c =1.415 9(3 )nm ,α =70 .3 8(1)° ,β =74.91(1)° ,γ =63 .64 (1)° ,V =1.75 49(5 )nm3 ,Z =4,Dc=1.3 2 6g/cm3 ,μ =0 .0 92mm-1,F(0 0 0 ) =73 6,R =0 0 43 6,wR =0 .10 76.此化合物通过分子间氢键形成沿a轴无限延伸的一维链状结构的超分子 ,由于分子间的作用力使其分子又沿b轴呈层状堆积     

1－苯基－3－甲基－4－（6－氢－4－氨基－5－硫杂－2，3－吡嗪）－吡唑啉酮光致变色超分子化合物的合成、结构与性能

通过1－苯基－3－甲基－4－氯乙酰基－吡唑啉酮－5（PMCP）和氨基硫脲（ TSC）缩合，形成了一种含NNS六元杂环的光致变色化合物（PMCP－TSC）。利用元 素分析，MS，”1H NMR，IR和UV光谱进行了表征。通过紫外可见光谱对它的光致 变色性质进行了研究，测出了光致变色反应的动力学常数。并用X线单晶衍射仪测 定了PMCP－TSC变色后的晶体结构，该晶体属单斜晶系，具有P2_1/c空间群，a = 0.105 10(2) nm, b = 0.150 61(3) nm, c = 0.993 70(10) nm, β = 107.890 (10)°, V = 1.496 9(4) nm~3, Z - 4, D_c = 1.417 Mg/m~3, μ = 0.232 mm~(- 1), F(000) = 672, R = 0.033 4, wR = 0.089 6。结构分析表明：其光致变色现 象是由于它在溶剂与光的共同作用下发生了从醇式到酮式的异构化。同时该化合物 经分子间氢键形成二聚体，又通过甲醇与本体分子之间的氢键使化合物形成具有三 维网络结构的超分子化合物。     

A Theoretical Study on the Photochromic Mechanism of 1-Phenyl-3-methyl-4-（6-hydro-4-amino-5-sulfo-2,3-pyrazine）-pyrazole-5-one

The photochromic mechanism of 1-phenyl-3-methyl-4-（6-hydro-4-amino-5-sulfo-2,3- pyrazine）-pyrazole-5-one has been investigated using the density functional theory（DFT）. The solvent effect is simulated using the polarizable continuum model（PCM） of the self-consistent reaction field theory. According to the crystal structure of the title compound, an intramolecular proton transfer mechanism from enol to keto form was proposed to interpret its photochromism. Bader＇s atom-in-molecule（AIM） theory is used to investigate the nature of hydrogen bonds and ring structures. Time-dependent density functional theory（TDDFT） calculation results show that the photochromic process from enol to keto form is reasonable. The conformation and molecular orbital analysis of enol and keto forms explain why only intramolecular proton transfer is possible. The results from analyzing the energy and dipole moments of enol form, transition state and keto form in the gas phase and in different solvents have been used to assess the stability of the title compound.     

Synthesis and Crystal Structure of N-（1-Phenyl-3-methyl-4-benzal-pyrazolone-5）-furoic Hydrazide

1 INTRODUCTION In recent years, investigations on the com- pounds containing hydrazide or hydrazone moieties have been increased considerably because of their potentially biological activities, especially as poten- tial inhibitors for many enzymes[1～5]. The presence of weak molecular interactions such as hydrogen- bonding controls the conformational and structural features which are important to the drug action[6, 7]. We have synthesized the photochromic compounds of pyrazolone thiosemi…     

Theoretical study on molecular structures, intramolecular proton transfer reaction, and solvent effects of 1-phenyl-3-methyl-4-(6-hydro-4-amino-5-sulfo-2,3-pyrazine)-pyrazole-5-one

The molecular structures and intramolecular proton transfer reaction of 1-phenyl-3-methyl-4-(6-hydro-4-amino-5-sulfo-2,3-pyrazine)-pyrazole-5-one have been investigated with both ab initio method and the density functional theory. The solvent effects are simulated using the self-consistent reaction field (SCRF) method within the framework of the polarizable continuum model (PCM). The results show that the computed geometrical parameters at the B3LYP levels are in better agreement with experimental values than those at the RHF levels, and the choice of functional in DFT plays an important role in describing the title compound. It is found that strong hydrogen bonds (O–H···N and O···H–N) exist in the title compound, and in the proton transfer process, the O–H bond is broken while the N–H bond is formed. In addition, the order of stability of the isomers remains the same in different solvents, while the barrier height of the proton transfer reaction and dipole moments for the title compound grow with the increase of the solvent polarity. Eventually, the NBO analysis shows that the strength of the hydrogen bond reduces with the increase of the solvent polarity.     

Crystal Structure of a Novel Compound： 1-Phenyl-3-ethyl-4-（salicylidene hydrazide）-propenylidene-pyrazolone-5

1 INTRODUCTION 4-Acyl pyrazolones and their derivatives, reported to behave as effective chelating and extracting rea- gents for many metal ions, not only play a key role in coordination compounds with wide applications in several fields, from new materials[1] to catalysts[2] as precursors for CVD in the microe-lectronic Indus- try[3] and as potential antitumourals[4], but also are the focus of research as potential antifungal agro- chemicals and widely used as antiviral, antipyretic anal…     

Synthesis and Crystal Structure of 2（1-Phenyl-3-methyl-5-chloro-1H-pyrazol-4-yl）-3-（1-naphthoylamido）-4-thiazolidinone

1INTRODUCTIONManypyrazolederivativeshavebeenreportedtoshowvariousbiologicalactivitiestobeusedasbactericide[1],fungicide[2],herbicide[3],insecticide[4]andvirucide[5]agents.Inaddition,4-thiazolidinoneplaysavitalroleowingtoitswiderangeofbiologi-calactivities…     

Synthesis and Crystal Structure of 4-（4-Chlorophenyl）-6-methyl-5-methoxy-caronyl-3,4-dihydropyrimidin-2（H）-one

1 INTRODUCTION Biginelli reaction is a three-component condensa-tion of ethyl acetoacetate, benzaldehyde and urea forthe synthesis of 3,4-dihydropyrimidin-2(1H)-ones(Scheme 1). The reaction can be carried out in aone-pot fashion in alcohol solution in t…