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1.
空间不对称希夫碱(HCBP-PHEN-SALH)的合成和表征   总被引:1,自引:0,他引:1  
孔繁荣  丁辰元 《化学世界》1999,40(12):636-637,638
报道了用控制反应物配比的方法,合成空间不对称希夫碱5-氯-2-羟基二苯甲酮缩邻苯二胶缩水杨醛(HCBP-PHEN-SALH),用红外光谱和核磁共振进行了结构表征。  相似文献   

2.
以5,5'-亚甲基双水杨醛缩-2-(2-氨基苯胺基)-3-氰基-5-甲基噻吩希夫碱(L)和乙酸铜或乙酸镍为原料,合成了含噻吩双水杨醛希夫碱铜(Ⅱ)、镍(Ⅱ)配合物,用滴定分析、元素分析、红外光谱、紫外-可见光谱和热分析对配合物进行了组成和结构表征。该双核配合物的组成为[M_2L(H_2O)_2](M=Cu~(2+),Ni~(2+)),中心离子与来自配体的亚胺基氮原子、酚羟基氧原子和氨基氮原子以及来自配位水分子中的氧原子形成了4配位的双核对称希夫碱配合物,其在空气气氛中的热分解反应包括脱水、配体的氧化分解过程,最后残余物为CuO或NiO。  相似文献   

3.
A new series of unsymmetrical macrocyclic complexes of tin(ll) has been prepared by the template process using bis(3-oxo-2-butylidene)propane-1,3-diamine as precursor. This affords a method to synthesize these complexes with various ring sizes. The tetradentate macrocyclic precursor [N(4)mL] reacts with SnCl(2) and different diamines in a 1:1:1 molar ratio in refluxing methanol to give complexes of the type [Sn(N(4)mL)Cl(2)]. The ring expansion has been achieved by varying the diamine between the two diacetyl amino nitrogen atoms. The macrocyclic precursor and its metal complexes have been characterized on the basis of elemental analysis, molar conductance, molecular weight determinations, IR, (1)H NMR,(13)C NMR, (119)Sn NMR and electronic spectral studies. An octahedral geometry around the metal ion is suggested for these complexes. On the basis of molecular weights and conductivity measurements, their monomeric and non-electrolytic nature has been confirmed. The precursor and complexes have been screened in vitro against a number of pathogenic fungi and bacteria to assess their growth inhibiting potential. The testicular sperm density and testicular sperm morphology, sperm motility, density of cauda epididymal spermatozoa and fertility in mating trails and biochemicals parameters of reproductive organs have been examined and discussed.  相似文献   

4.
新型双核席夫碱化合物的合成、表征   总被引:1,自引:0,他引:1  
用乙二胺、乙酰丙酮与水杨醛反应合成了一种不对称席夫碱配体单元(H2L^1),将所得不对称席夫碱配体单元(H2L^1)与氨水、I2反应合成了对称新型双核席夫碱配体(H4L^1),通过元素分析、核磁共振、红外光谱、质谱分析、紫外光谱等手段对合成得到的不对称席夫碱配体单元及新型双核席夫碱化合物进行了表征。  相似文献   

5.
以邻香兰素、对苯二胺、2-乙酰基吡嗪、水杨醛和4,4'-二氨基二苯醚为原料合成了四种新型对称Schiff碱,并与金属盐反应,培养了晶体。对配体及配合物进行了表征。  相似文献   

6.
合成了丙二酰肼缩双水杨醛席夫碱配体及与Cu(Ⅱ)、Ni(Ⅱ)和Zn(Ⅱ)的金属配合物。用元素分析、IR、摩尔电导和电子光谱对所有化合物进行了表征.对席夫碱配体还进行了^1HNMR和MS结构表征.给出了化合物可能的空间结构。  相似文献   

7.
呋喃甲醛与1,3-二氨基硫脲反应,合成了呋喃甲醛缩(1,3-二氨基硫脲)(L)配体及其相应的Cu(Ⅱ)、Co(Ⅱ)、Zn(Ⅱ)、Ni(Ⅱ)配合物.测定了配体及其配合物的溶解性能及摩尔电导率,其结构经元素分析、紫外和红外光谱表征.  相似文献   

8.
酰腙类化合物是由酰肼与醛或酮缩合而成的一类Schiff碱类化合物,具有独特的生物活性和较强的的抑菌、抗病毒和抗肿瘤的生物活性。本文以甲基丙烯酸甲酯、乙酰乙酸乙酯为反应物,分别与水合肼反应,生成了甲基丙烯酰肼与二乙酰肼,进一步缩合,得到未见报道的环戊酮甲基丙烯酰腙和丙酮二乙酰腙。  相似文献   

9.
Two new nano mercury(II) coordination compounds, [Hg2(μ-L1)(μ-I)2I3]n (1) and [Hg(L2)(I)2] (2) {L1?=?(E)-N′-(pyridin-2-ylmethylene)isonicotinohydrazide and L2?=?(E)-N′-(1-(pyridin-2-yl)ethylidene)isonicotinohydrazide} have been synthesized by a sonochemical method. The new nano-structures were characterized by scanning electron microscopy, X-ray powder diffraction, elemental analysis and IR spectroscopy. The compounds were also characterized by single crystal X-ray diffraction and the results indicate a 1D fishbone-like structure containing dinuclear units for 1 and a mononuclear structure for 2. In coordination polymer 1, the two Hg(II) centers are four coordinate into a chain-axis and also in the terminal linkages. In complex 2, the Hg(II) center is four coordinate. The chains of polymer 1 interact with each other through π–π stacking interactions which create a 3D framework.  相似文献   

10.
合成了4种间硝基苯胺水杨醛Schiff碱过渡金属配合物,其结构经UV-Vis、IR、元素分析、摩尔电导率测定等表征。荧光光谱表明,4种配合物都能强烈猝灭牛血清白蛋白(BSA)的内源荧光。生物活性实验表明,配合物对金黄色葡萄球菌(S.aureus)、大肠杆菌(E.coli)、枯草芽孢杆菌(B.subtilis)、绿脓杆菌(P.aeruginosa)均有不同程度的抑菌作用,其中对绿脓杆菌的抑菌活性较强。4种配合物的抑菌活性均大于配体的抑菌活性。  相似文献   

11.
Journal of Inorganic and Organometallic Polymers and Materials - In this paper, a new Schiff base was synthesized via the condensation reaction between 3-methyl-4-amino-5-mercapto-1,2,4 triazole...  相似文献   

12.
以天然碱性必需氨基酸L-赖氨酸和天然产物茴香醛为前体物,在无水体系中合成了新型L-赖氨酸席夫碱。测定产物熔点为209.4~209.7℃,采用红外光谱、紫外光谱、元素分析及TG&DTG等方法对产物进行了表征,推测出其分子式为C14H18N2O3K.  相似文献   

13.
以对苯二甲醛与偶氮苯胺基化合物进行缩合反应合成系列新型具有不同取代基的含有偶氮苯共轭基团的席夫碱化合物。利用紫外光谱、红外光谱以及荧光光谱研究了目标产物的取代基效应,并用差热-热重分析方法对其热稳定性能进行测定。实验数据表明,对于分子内取代基团、共轭体系等因素的调控,可以得到性能迥异的席夫碱化合物,在功能材料等领域具有广泛的应用价值。  相似文献   

14.
三乙烯四胺与乙二醛反应得到西佛碱型大环多胺化合物C16H32 N8(L)。配体L经元素分析、红外、紫外 -可见、质谱等确证。在此基础上进一步合成了其与过渡金属离子Cd2 的双核配合物 ,对该配合物进行了元素分析、红外、紫外 -可见、摩尔电导等表征  相似文献   

15.
三乙烯四胺与乙二醛反应得到西佛碱型大环多胺化合物C16H32 N8(L)。配体L经元素分析、红外、紫外 -可见、质谱等确证。在此基础上进一步合成了其与过渡金属离子Cu2 的配合物 ,对该配合物进行了元素分析、红外、紫外 -可见、摩尔电导等表征  相似文献   

16.
双邻香草醛席夫碱的合成与表征   总被引:1,自引:0,他引:1  
用邻香草醛,4,4-二氨基二苯醚为原料合成双邻香草醛(二苯醚)苯亚胺schiff碱,这是一种具有N,N,O,O-四齿配位的新型Schiff碱,通过红外光谱、紫外光谱,核磁、粉末XRD衍射等对其结构进行了表征.结果表明:在无水乙醇中成功合成了双邻香草醛(二苯醚)苯亚胺schiff碱,且生成的schiff碱为晶态物质,熔点为170~172℃.  相似文献   

17.
18.
Manganese(II) chloride reacts with trimethylsilyl triflate (TMS(OTf) where OTf = (-)OSO(2)CF(3)) in a 1:1 mixture of acetonitrile and tetrahydrofuran, and after recrystallization affords the linear coordination polymer [Mn(II)(CH(3)CN)(2)(OTf)(2)](n). Each distorted octahedral manganese(II) center in the polymeric chain has trans-acetonitriles and the remaining equatorial coordination positions are occupied by the bridging triflate anions. Dissolving [Mn(II)(CH(3)CN)(2)(OTf)(2)](n) in equal volumes of acetonitrile and pyridine followed by recrystallization with diethyl ether yields trans-[Mn(II)(C(5)H(5)N)(4)(OTf)(2)]. The distorted octahedral geometry of the manganese center features monodentate trans-triflate anions and four equatorial pyridines. Exposure of either [Mn(II)(CH(3)CN)(2)(OTf)(2)](n) or [Mn(II)(C(5)H(5)N)(4)(OTf)(2)] to water readily gives [Mn(II)(H(2)O)(6)](OTf)(2). XRD reveals hydrogen-bonding interactions between the [Mn(II)(H(2)O)(6)](2+) cation and the triflate anion. All three of these species are easily crystallized and provide convenient sources of manganese(II) for further synthetic elaboration.  相似文献   

19.
A novel 4-((5-formyl-2,4-dihydroxyphenyl)diazenyl)benzylphosphonic acid (FPABP) ligand was synthesized and bound to silica-gel which was activated with 3-aminopropyltriethoxysilane (APTES). Cu(II), Co(II), Ni(II) and Mn(II) complexes of silica-supported ligand (FDPDABP) were synthesized. The ligand and its complexes were characterized by using NMR, FT-IR, elemental analysis, ICP-OES and scanning electron Microscope (SEM). Catalytic properties of the complexes were investigated for the selective oxidation of cyclohexane under microwave power. SiO2-FDPDABP-Cu(II) complex showed good catalytic activitiy for the selective oxidation of cyclohexane to cyclohexanol with 35.61% yield and cyclohexanone with 7.74% yield.  相似文献   

20.
以Al Cl3/Et3N为催化剂,4-氨基邻苯二甲腈、4-甲基苯甲醛和4-甲氧基苯甲醛为主要原料,制备了两种苯基席夫碱取代邻苯二甲腈,经四聚反应生成2(3),9(10),16(17),23(24)-四(4-甲基-苯甲亚胺基)锌酞菁(SPc)和2(3),9(10),16(17),23(24)-四(4-甲氧基-苯甲亚胺基)锌酞菁(SOPc)。利用FTIR、~1HNMR、~(13)CNMR和元素分析对其结构进行了表征,并通过UV-Vis考察了其性能。结果表明:SPc和SOPc的Q带相比于无取代酞菁分别红移了35 nm和43 nm,在450~600 nm范围内有吸收。SPc和SOPc在0.002~0.010 mmol/L的N,N-二甲基甲酰胺(DMF)溶液中,主要以单体形式存在,无聚集。用循环伏安法考察了产品的氧化还原性能,结果表明:SPc和SOPc的ELUMO值分别为-3.24、-3.29 e V,EHOMO值分别为-4.88、-4.71 e V,且SPc和SOPc的能级结构与纳米Ti O2的导带能级结构相匹配,实现了染料的再生。  相似文献   

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