一种新的含吡唑啉酮氨基硫脲化合物的晶体结构及其光致变色性质

A new photochromic organic compound of thiosemicarbazone, 4-（p-bromo-α-methylaminothiocarbonyl hydrazonobenzal）-2,5-dihydro-3-mcthyl-5-oxo-1-phcnyl pyrazolc, was synthesized and characterized by elemental analyses, IR, ^1H NMR spectra, and X-ray single-crystal diffraction analysis. The compound exhibited an interesting photochromism in the solid state when irradiated by ultraviolet light at 365 nm. The photochromic kinetics was studied by the time-dependent powder UV-Vis reflectance spectra. The intcrmolecular and intramolecular hydrogcn-bonding interactions may be responsible for the photochromic phenomenon.     

1-苯基-3-甲基-4-(6-氢-4-甲基氨基-5-硫杂-2,3-吡嗪)-吡唑啉酮的合成与晶体结构

通过1-苯基-3-甲基-4-氯乙酰基-吡唑啉酮-5 (PMCP) 和4-甲基氨基硫脲 (MTSC) 缩合, 形成了一种新的双杂环化合物 (PMCP-MTSC)。利用元素分析与单晶X-射线衍射进行了表征。 该化合物(C14H15N5OS)属单斜晶系, P21 空间群, 晶体学参数为 a = 7.634(1), b = 11.639(2), c = 8.150(2) ? ?= 98.13(1), V = 716.9(2) ?, Z = 2, Dc = 1.396 g/cm3, (MoKa) = 0.232 mm-1, F(000) = 316, Mr = 301.37。结构由直接法解出,共收集3114个衍射点,其中I > 2(I)的独立衍射点有2453个,用全矩阵最小二乘法修正,最终偏离因子:R = 0.0294, wR = 0.0738。结构分析表明: 该化合物以酮式存在,分子间通过氢键作用(N(5)H…O)连接起来并形成一维链状结构。     

具有U构型的二{1-甲硫基-1-[1-苯基-1-(1-苯基-3-甲基-5-氧代-4,5二氢吡唑-4-烯)-甲氨基]亚氨甲基}二硫醚的晶体结构

The reaction of 1-phenyl-3-methyl-4-benzoyl-2,5-dihydro-1H-pyrazol-5-one (PMBP) and methyldithiocarbazate (mdtc) in methanol results in formation of a yellow crystalline solid, adduct of 1-phenyl-3-methyl-4benzoyl-2,5-dihydro-lH-pyrazol-5-one and methyldithiocarbazate. When the yellow solids were dissolved in a mixture of methanol and ether (1:4), a red crystal, which is an oxidation product of the former, was obtained by allowing solvent to evaporate for a few days at room temperature. The X-ray analysis of the red crystal indicates that it is a novel disulfide with a special structure like a “U” conformation in the solid state.     

1-苯基-3-苯基-4-对氟苯亚甲基-5-吡唑啉酮缩4-苯基氨基脲光致变色化合物的合成及其光谱研究

有机光致变色化合物如螺吡喃、螺噁嗪、俘精酸酐等,由于它们在信息记录、信息处理、各种发射材料和分子开关等领域有广阔的应用前景,因而引起了人们的广泛关注[1,2],但对含吡唑啉酮缩氨基脲类光致变色化合物的研究还鲜有报道[3,4].本文按1:1摩尔比称取1-苯基-3-苯基-4-对氟苯甲酰基-5-吡唑啉酮和4-苯基-氨基脲置于圆底烧瓶中,加入适量乙醇,于80℃下搅拌回流8 h,析出沉淀.洗涤、干燥得1-苯基-3-苯基-4-对氟苯亚甲基-5-吡唑啉酮缩4-苯基-氨基脲光致变色化合物.用紫外漫反射光谱研究了其在固态时的光致变色行为及其动力学反应.实验表明该化合物在固态具有明显的光致变色性质,经365 nm紫外光照射一段时间后,在355～455 nm之间出现了一新峰,且该峰的强度随光照时间的延长而增加,同时伴随着颜色发生改变,即由白色逐渐变为黄色.而且还发现该化合物的光致变色过程遵循的是一级动力学反应,其速率常数k=3.857×10-4s-1.     

棉籽油脚单乙醇酰胺磺基琥珀酸单酯盐的制备

利用不经提纯的棉籽油脚为原料，合成出棉籽油脚单乙醇胺磺基琥珀酸单酯盐．通过正交实验设计．确定了合成棉籽油脚单乙醇胺的优化条件为：反应温度为80℃，反应时间为3h，W(催化剂)=4．5％，n(RCOOCH3)：n(H2NCH2CH2OH)=1:1．1．界面张力测定结果表明，合成的棉籽油脚单乙醇胺磺基琥珀酸单酯盐能与克拉玛依七东一区原油形成10^-3mN／m超低界面张力．     

配合物Ni(DPBP-SAH)2·2CH3CH2OH的合成和晶体结构

A nickel(Ⅱ) complex Ni(DPBP-SAH)₂·2CH₃CH₂OH, (DPBP-SAH=N-(1,3-diphenyl-4-benzylidene-5-pyrazolone)-salicylidene hydrazone), has been synthesized and characterized by elemental analyses, IR spectra and single crystal X-ray diffraction. It belongs to monoclinic, space group C2/c with a=2.737 9(4) nm, b=1.249 2(2) nm, c=1.760 8(2) nm, β=120.212(9)°, M_r=1 065.84, V=5.204(1) nm³, Z=4. The X-ray diffraction reveals that the nickel(Ⅱ) ion in the title complex is in a slightly distorted octahedral arrangement of the ON donor atoms of two DPBP-SAH and two O-donor atoms in ethanol. CCDC: 249394.     

2-乙氨基-6H-5-(1-苯基-3-甲基/苯基-5-吡唑啉酮-4-基)-1,3,4-噻二嗪的合成和晶体结构

利用1-苯基-3-甲基/苯基-4-氯乙酰基-吡唑啉酮-5(PMCP/DPCP)与4-乙基氨基硫脲(ETSC)发生缩合反应,生成了2个新的双杂环化合物2-乙氨基-6H-5-(1-苯基-3-甲基/苯基-5-吡唑啉酮-4-基)-1,3,4-噻二嗪(PMCP-ETSC/DPCP-ETSC),并对其进行元素分析、红外光谱、核磁共振表征和晶体结构分析.PMCP-ETSC晶体属于单斜晶系,Pm空间群,晶胞参数:a=0.7947(1)nm,b=0.8348(1)nm,c=1.1990(2)nm,β=106.07(1)°,V=0.77269(2)nm3,Z=2,Dc=1.356g/cm3,μ=0.219mm-1,F(000)=332,R=0.0298,wR=0.0704.该化合物通过分子间氢键形成沿c轴无限延伸的一维链状结构.DPCP-ETSC晶体属于正交晶系,Pna21空间群,晶胞参数:a=1.1478(2)nm,b=1.3545(2)nm,c=1.1994(2)nm,V=1.8646(4)nm3,Z=4,Dc=1.345g/cm3,μ=0.194mm-1,F(000)=792,R=0.0345,wR=0.0694,此化合物通过分子间氢键形成沿c轴成链状,沿ab平面成波浪状的超分子结构.     

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…     

棉籽底油单乙醇胺磺基琥珀酸单脂盐的复合驱油体系

研究了碱、盐、钙镁离子及棉籽底油单乙醇胺磺基琥珀酸单脂二钠盐浓度对驱油体系的影响 ,所得的最佳配方驱油体系在较宽的碱范围内 (0 .5 %～ 1 .5 % )与七东 1区原油的油水界面张力小于 5× 1 0 - 3m N/m,且持续时间长 ,稳定性好 ,抗盐性大于 2 0 g Na Cl/L,抗二价钙镁离子能力较强 .     

一种新的双吡唑啉酮化合物的合成及晶体结构

4-酰基吡唑啉酮是一类含有氮杂环的β-二酮型螯合剂,近几十年来,国内外对该类化合物及其衍生物进行了广泛的研究[1-3].本室验室曾合成了一系列4-苯甲酰基吡唑啉酮缩氨基硫脲及其衍生物,发现这类含硫席夫碱具有光致变色性,并对其变色机理和反应动力学进行了详细研究[4,5].作为工作的继续,我们又合成了1-苯基-3-甲基-4-乙酰基-5-吡唑啉酮缩硫甲基氨基硫脲(PMEP-MTTSC),虽然此化合物不具有光致变色性,但在培养其单晶的过程中,却意外地得到了一种双吡唑啉酮化合物.当用不同的溶剂来培养其单晶时,又得到了这种双吡唑啉酮的一对互变色异构体.反应过程如下: