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1.
合成了两种以3-硝基邻苯二甲酸根为桥联配体的新型双核钴(Ⅱ)的配合物,即[Co2(3PT)(Phen)4]·(ClO4)2·4H2O(配合物1)和[Co2(3PT)(NPhen)4](ClO4)2·5H2O(配合物2)(3PT=3-硝基邻苯二甲酸根,Phen=1,10-菲口罗啉,NPhen=5-硝基-1,10-菲口罗啉)。使用元素分析,IR,UV-vis和电导测定方法对该两配合物进行了表征。测定了配合物的变温磁化率,并对所得数据进行了理论分析,求得了配合物1、2的磁交换积分均为2J=-9.2cm-1。对配合物进行了体外抗人白血病癌细胞实验。发现该两配合物均具有较强的抑制人白血病癌细胞的活性。  相似文献   

2.
合成了三种以2-溴代对苯二甲酸根为桥联配体的新型双核钴(Ⅱ)的配合物,即[Co2(BTP)(phen)4](ClO4)2·H2O(配合物1)、[Co2(BTP)(Nphen)4](ClO4)2·2H2O(配合物2)和[Co2(BTP)(Bpy)4](ClO4)2·2H2O(配合物3)(BTP=2-溴代对苯二甲酸根,phen=1,10-菲罗啉,Nphen=5-硝基-1,10-菲罗啉,Bpy=2,2′-联吡啶)。使用元素分析、IR、UV-Vis光谱和电导测定方法对该配合物进行了表征。测定了配合物的变温磁化率,并对所得数据进行了理论分析,求得了配合物1、配合物2和配合物3的自旋磁交换积分分别为:2J=-6.5cm-1,2J=-7.8cm-1和2J=-8.9cm-1。对该三配合物进行了体外抗人白血病癌细胞的实验。发现该三配合物均具有一定的抑制癌细胞的活性  相似文献   

3.
稀土杂多配合物的抗流感病毒活性   总被引:7,自引:0,他引:7  
采用鸡胚实验法,对几种稀土杂多配合物进行了鸡胚毒性及抗A3型流感病毒活性研究。在对鸡胚无毒情况下,稀土杂多配合物对A3型流感病毒具有直接灭活作用,双十一钨硼镨钾盐K15[Pr(BW11O39)2]·15H2O对A3型流感病毒的抑制率高达90%,抗病指数为69,明显高于阳性对照药物病毒唑的抑制效果。  相似文献   

4.
合成了两种以3-硝基邻苯二甲酸根为桥联配体的新型双核钴(Ⅱ)的配合物,即「o2(3PT)(Phen)4」。(ClO4)2.4H2O(配合物1)帮「Co2(3PT)NPhen)4」(ClO4)D2.5H2O(配合物2)。发现该两配合均具有较强的抑制人白血病细胞的活性。  相似文献   

5.
Cu, Zn─SOD酶模型化合物催化O2歧化作用的研究   总被引:4,自引:2,他引:4  
为了解Cu,Zn-SOD酶结构和功能关系,尤其是Cu周围配位构型对催化O^-2歧化活性的影响,本文用NBT法测定了Cu,Zn-SOD酶和两个Cu-im-Zn模型配合及相应单核配合物催化O^_2歧化的活性,结果表明不同咪唑桥联方式和不同配位构型的化合物催化O^-2歧化的活性明显不同。  相似文献   

6.
本文报道了稀土与丙氨酸-N-荒酸镍[H2NiL2]多核配合物的合成和表征。通过元素分析确定配合物的组成为RE2(NiL2)3·xH2O(RE=La、Nd、Sm-Er、Yb;x=1、4、8),并研究了配合物的摩尔电导、红外光谱和核磁共振氢谱。配合物体外抗癌活性及抑菌活性的测定结果表明,丙氨酸-N-荒酸镍及其稀土多核配合物均具一定的抗癌、抑菌活性。  相似文献   

7.
在微波辐射下用低温固相配位反应合成出多核配合物.通过元素分析确定配合物组成为La2(CoL2)3(L=-S2CNHCH2CO-2),并研究了该配合物的摩尔电导、红外光谱、紫外光谱和核磁共振氢谱.配合物的抗癌活性测定结果表明Co(HL)2和La2(CoL2)3有一定的抗癌活性;La2(CoL2)3对肝癌细胞生长有显著抑制作用,对正常肝细胞的生长无影响.  相似文献   

8.
描述了以镍单核配合物NiCp2和簇合物Ni3Cp3N-t-C4H9为前体的SiO2载镍催化剂的制备,通过元素分析、TRR、TPDE、XPS,CO吸附和苯加氢反应对以镍配合物和簇合物为前体制备的催化剂的性能及其制备过程了研究和表征。结果表明,镍与合物和簇合物在担载过程中同载体SiO2表面发生了相互作用,其化学组成发生了变化,在苯加氢反应中,此催化剂的活性比以Ni(NO3)2为前体制备的催化剂高得多,  相似文献   

9.
研究了聚(苯乙烯-丙烯酰胺)(PSAC)载体-氯化钕配合物催化丁二烯聚合的规律,考察了PSAC载体及PSAC.NdCl3配合物的组成与催化活性间的关系,PSAC载体的收率不影响配合物的活性,而配合物的活性却随PSAC载体中C(O)NH2功能团含量的高低而改变,含量低时活性高,PSAC载体与配合物的组成不影响所得聚丁二烯的微观结构。  相似文献   

10.
杂多配合物抗狐脑炎病毒的活性探讨   总被引:5,自引:0,他引:5  
抗病毒活性;杂多配合物抗狐脑炎病毒的活性探讨  相似文献   

11.
The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.  相似文献   

12.
非那雄胺能抑制5α-还原酶的活性,明显降低二氢睾酮水平,是一种治疗良性前列腺增生的有效药品。该合成工艺以甾烯酮酸为原料,将其与氯化亚砜反应,无须分离即与叔丁胺反应得17β-酰胺化合物,再氧化开环,环合,氢化,脱氢合成了非那雄胺。经元素分析、IR、1HNMR、13CNMR、MS分析表征了其结构。该法无须使用昂贵的2,2-二吡啶二硫化物和剧毒药品苯亚硒酸酐,且以乙酸铵代替氨气,降低了对设备的要求和腐蚀,更适用于工业生产。  相似文献   

13.

The heats of detonation of 20 simple high explosives and explosive mixtures were determined by means of an adiabatic detonation calorimeter designed by the authors. The results indicated that the performance of the instrument was reliable and the experimental data were very accurate. For explosive mixtures, there was a linear accumulative relationship between the heats of detonation of the explosive mixture and its components. Accordingly, the heats of detonation of explosive mixtures could be calculated directly from the heats of detonation of simple explosives and the characteristic heats of other components. The experiments showed that the gold or brass shell of the cylindrical charge could be substituted by a thick-walled porcelain shell, which had the advantage of cheapness.

  相似文献   

14.
Two vanilloids, (5E)-8-(4-hydroxy-3-methoxyphenyl)oct-5-en-4-one (1) and 4-[3-hydroxydecyl]-2-methoxyphenol (2), isolated from the dried seeds of Grains of Paradise (Aframomum melegueta), were synthesized; the latter compound was made as the S-enantiomer and the material derived from the seeds was found to be a 1:1.7 mixture of the R and S isomers. The synthetic route used should allow the preparation of analogs having extended alkyl chains and consequently different lipophilicity, and 3, a homolog of 2, was also prepared.  相似文献   

15.
In this review, the research of the author in the field of colloidal systems is summarized. The factors influencing colloidal stability are systematized and analyzed. Examples are presented to illustrate the practical utilization of the theory of stability of colloids and thin films.This review was prepared on the basis of the works of the author, which were awarded the State Premium for 1991 in the field of science and technology, chemistry section.Institute of Physical Chemistry, Russian Academy of Sciences, 117915 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1708–1717, August, 1992.  相似文献   

16.
Main hydration products of two cement pastes, i.e. CSH-gel, portlandite (P) (and specific surface S) were studied by static heating, and by SEM, TEM and XRD, as a function of cement strength (C-33 and C-43) hydration time (th) and subsequent hydration in water vapour.Total change in mass on hydration and air drying, Mo, increased with strength of cement paste and with hydration time. Content of water escaping at 110 to 220°C, defined as water bound with low energy, mainly interlayer and hydrate water, was independent on cement strength but its content increased with (th). Content of chemically bound (zeolitic) water in CSH-gel, escaping at 220-400°C, was slightly dependent on strength and increased with (th). It was possibly derived from the dehydroxylation of CSH-gel and AFm phase. Portlandite water, escaping at 400-500°C, was independent on cement strength and was higher on longer hydration. Large P crystals were formed in the weaker cement paste C-33. Smaller crystals were formed in C-43 but they increased with (th). Carbonate formated on contact with air (calcite, vaterite and aragonite), decomposed in cement at 600-700oC. It was high in pastes C-33(1 month) and C-43(1 month), i.e. 5.7 and 3.3%, respectively; it was less than 1% after 6 hydration months (low sensitivity to carbonation) in agreement with the XRD study showing carbonates in the air dry paste (1month), and its absence on prolonged hydration (6 months) and on acetone treatment. Water vapour treatment of (6 months) pastes or wetting-drying increased this sensitivity.Nanosized P-crystals, detected by TEM, could contribute to the cement strength; carbonate was observed on the rims of gel clusters.This revised version was published online in November 2005 with corrections to the Cover Date.  相似文献   

17.
翟宗玺  刘树深  夏树屏 《化学学报》1990,48(10):946-950
用氧化镁氯化镁水溶液制备了8水合氯氧化镁[nMg(OH)2·MgCl2·8H2O], 并测定了其在盐酸中的溶解热, 实验结果表明, 氯氧化镁溶解热与n值呈线性关系, 根据溶解热求出5Mg(OH)2·MgCl2·8H2O和3Mg(OH)2·MgCl2·8H2O的生成热分别为-7727.1和5888.1kJ·mol^1^-。  相似文献   

18.
The enthalpies of solution of several oxosulfides of rare-earth elements and the high-temperature enthalpies of oxosulfides and oxosulfates of lanthanum and yttrium were measured using solution calorimetry and high-temperature microcalorimetry techniques. Standard enthalpies of formation and some thermodynamic properties of oxosulfides and oxosulfates were calculated. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2 pp. 294–297, February, 1997.  相似文献   

19.
20.
设计了铁的锈蚀实验,说明了铁钉的处理方法,增加了温度、酸、碱的影响条件,实现了铁跟蒸馏水及空气中氧气快速反应而生锈,使实验在5 min左右就能够得到准确的结果。  相似文献   

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