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一种甲氧基封端苯基甲基硅树脂预聚体合成工艺的探究
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作者 王旸 杨皓 +3 位作者 张玉霞 瞿志荣 伍川 董红 《杭州师范大学学报(自然科学版)》 CAS 2024年第3期281-286,共6页
以苯基三氯硅烷、二甲基二氯硅烷、甲醇、水为原料,水解缩合制备甲氧基封端的苯基甲基硅树脂预聚体.探究了水解和加料方式、溶剂、反应时间、温度等对反应过程及产物性能的影响,通过对预聚物组成、结构及性能的表征,确定了制备液体硅树... 以苯基三氯硅烷、二甲基二氯硅烷、甲醇、水为原料,水解缩合制备甲氧基封端的苯基甲基硅树脂预聚体.探究了水解和加料方式、溶剂、反应时间、温度等对反应过程及产物性能的影响,通过对预聚物组成、结构及性能的表征,确定了制备液体硅树脂预聚体的最优反应条件. 展开更多
关键词 甲氧基封端 硅树脂预聚体 合成工艺
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中国南海海绵中19-methoxy-scalarin立体构型的确定(英文) 被引量:5
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作者 李敏一 李林 +2 位作者 邓志威 邱彦 林文翰 《波谱学杂志》 CAS CSCD 北大核心 2004年第3期323-329,共7页
对中国南海海绵中的新化合物 19-methoxy-scalarin进行~1H和^(13)C NMR谱的全归属,并运用“激发雕刻”技术,利用 1D GOESY实验确定该化合物立体构型。实验结果亦表明 1D GOESY实验选择性好,提供的信息更加直观、清晰,是化合物立体结构... 对中国南海海绵中的新化合物 19-methoxy-scalarin进行~1H和^(13)C NMR谱的全归属,并运用“激发雕刻”技术,利用 1D GOESY实验确定该化合物立体构型。实验结果亦表明 1D GOESY实验选择性好,提供的信息更加直观、清晰,是化合物立体结构确定的好方法。 展开更多
关键词 中国 南海海绵 核磁共振 激发雕刻技术 19-methoxy-scalarin 结构分析
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新几内亚凤仙CCoAOMT和SAMS基因的克隆及表达分析
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作者 李凡 张晓丽 +4 位作者 赵潞秋 石万磊 谭弋 黄美娟 黄海泉 《植物遗传资源学报》 CAS CSCD 北大核心 2024年第3期462-471,共10页
通过对新几内亚凤仙(Impatiens hawkeri)指甲花醚合成相关基因CCoAOMT和SAMS的克隆及表达分析,以期为解析其合成途径提供一定的理论依据。基于新几内亚凤仙指甲花醚含量测定和转录组测序数据分析,克隆到1个CCoAOMT和2个SAMS基因,将其命... 通过对新几内亚凤仙(Impatiens hawkeri)指甲花醚合成相关基因CCoAOMT和SAMS的克隆及表达分析,以期为解析其合成途径提供一定的理论依据。基于新几内亚凤仙指甲花醚含量测定和转录组测序数据分析,克隆到1个CCoAOMT和2个SAMS基因,将其命名为IhCCoAOMT、IhSAMS1和IhSAMS2。3种处理(光培养、暗培养和前体物DHNA (1,4-dihydroxy-2-naphthoate)诱导)均能促进指甲花醚积累,且暗培养处理最佳。IhCCoAOMT的cDNA全长为729 bp,编码242 aa,其蛋白具有AdoMet_MTases超家族结构域;IhSAMS1和IhSAMS2的cDNA全长分别为1179 bp和1173 bp,分别编码393 aa和391 aa,其蛋白均具有S-AdoMet_synt超家族结构域。系统进化分析表明,IhCCoAOMT与喜马拉雅凤仙亲缘关系最近;IhSAMS1与IhSAMS2可能为旁系同源。qRT-PCR分析表明,3个基因在新几内亚凤仙的3个处理及4个时期中均有表达,其中IhCCoAOMT在暗培养及前体物DHNA诱导中表达量整体上调,且暗培养第60天时表达量最高;IhSAMS1和IhSAMS2在暗培养及DHNA诱导中表达量整体下调,但IhSAMS1在DHNA诱导中表达量较高,IhSAMS2在暗培养中表达量较高。综上所述,推测IhCCoAOMT在指甲花醚处理后期起主要作用,IhSAMS1和IhSAMS2在其早期起主要作用,且IhSAMS2作用更为显著。 展开更多
关键词 新几内亚凤仙 指甲花醚 CCOAOMT SAMS 表达分析
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1,5,8-trihydroxy-3-methoxy-xanthone对大鼠局灶性脑缺血再灌注损伤的保护作用 被引量:5
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作者 史高峰 杨军英 +3 位作者 鲁润华 李春雷 杨云裳 杨爱梅 《中国药理学通报》 CAS CSCD 北大核心 2005年第2期206-209,共4页
目的 研究 1, 5, 8 trihydroxy 3 methoxy xanthoneXanth对大鼠局灶性脑缺血再灌注损伤的保护作用。方法 采用线栓法阻断大脑中动脉 (MCA)血流,造成局灶性脑缺血再灌注模型;评价大鼠行为功能、测定脑梗死体积及脑血清中丙二醛(MDA)含... 目的 研究 1, 5, 8 trihydroxy 3 methoxy xanthoneXanth对大鼠局灶性脑缺血再灌注损伤的保护作用。方法 采用线栓法阻断大脑中动脉 (MCA)血流,造成局灶性脑缺血再灌注模型;评价大鼠行为功能、测定脑梗死体积及脑血清中丙二醛(MDA)含量、超氧化物歧化酶 (SOD)、谷胱甘肽过氧化物酶 (GSH Px)活性。结果  1, 5, 8 trihydroxy 3 methoxy xanthone对大鼠脑缺血再灌注的模型组与假手术组相比,MDA含量升高 (P<0 05 ),SOD、GSH Px的活力降低 (P<0 05)。Xanth两剂量组与模型组相比MDA含量降低 (P<0 05),SOD、GSH Px的活力升高 (P<0 05)。结论 1, 5, 8 trihydroxy 3 methoxy xanthone对大鼠脑缺血再灌注损伤具有保护作用,其作用机制可能与保护SOD、GSH Px的活性,减少脂质过氧化有关。 展开更多
关键词 1 5 8-trihydroxy-3-methoxy-xanflmne 脑缺血再灌注损伤 丙二醛 超氧化物歧化酶 谷胱甘肽过氧化物酶
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柱前荧光衍生化法检测降尘样品中的不饱和醛
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作者 黄露杰 徐静 +4 位作者 汪耀 吕敏 崔玉洁 何振宇 林亚维 《分析科学学报》 CAS CSCD 北大核心 2024年第2期153-158,共6页
本研究发展了一种柱前荧光衍生化方法,实现了重要环境污染物不饱和醛类化合物的高灵敏度、高选择性分析。该方法使用4-丁基羟氨-7-羟基香豆素(HAHC)作为荧光衍生试剂,结合高效液相色谱-荧光检测法(HPLC-FLD)实现了6种二烯醛的定性、定... 本研究发展了一种柱前荧光衍生化方法,实现了重要环境污染物不饱和醛类化合物的高灵敏度、高选择性分析。该方法使用4-丁基羟氨-7-羟基香豆素(HAHC)作为荧光衍生试剂,结合高效液相色谱-荧光检测法(HPLC-FLD)实现了6种二烯醛的定性、定量分析。在实际样品分析中成功从积尘样品中检测出(E,E)-2,4-庚二烯醛、(E,E)-2,4-辛二烯醛、(E,E)-2,4-十一烷二烯醛。这种柱前衍生化法具有动态范围宽(2~2500nmol/L)、灵敏高(检出限为0.2nmol/L)、精密度好(日内相对标准偏差为2.17%~3.33%,日间相对标准偏差为2.28%~5.04%)等优点,且无需固相萃取等复杂前处理步骤,为痕量醛类污染物检测提供了有效手段。 展开更多
关键词 硝酮化衍生法 不饱和醛 高效液相色谱-荧光检测法 4-羟氨基丁基-7-甲氧基-香豆素
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2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮诱导Hep3B人肝癌细胞凋亡的机制
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作者 刘晓冬 韩英浩 《黑龙江八一农垦大学学报》 2024年第1期77-83,107,共8页
近年来,紫草萘醌类衍生物因其临床应用受到副作用的限制。为寻找副作用小疗效高的新型抗肿瘤药物,合成了2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮,并对其化学结构进行了鉴定。同时研究了2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-... 近年来,紫草萘醌类衍生物因其临床应用受到副作用的限制。为寻找副作用小疗效高的新型抗肿瘤药物,合成了2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮,并对其化学结构进行了鉴定。同时研究了2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮对人肝癌细胞活力、凋亡的影响及其潜在机制。研究结果表明,通过MTT检测其细胞活力,发现2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮显著降低了人肝癌细胞系的细胞活力。蛋白免疫印迹结果表明,该化合物可通过上调Cle-caspase3、Bad和Bax凋亡相关蛋白表达水平来诱导肝癌细胞Hep3B凋亡。为进一步检测2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮诱导Hep3B细胞发生凋亡的原因,使用荧光探针JC-1检测了2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮处理后Hep3B细胞内线粒体膜电位的变化。结果发现,与对照组相比,药物处理组线粒体膜电位显著下降,绿色荧光增强,红色荧光减弱,说明2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮能通过线粒体损伤来诱导Hep3B细胞凋亡。由于2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮显著诱导Hep3B细胞凋亡。因此,2-(4-甲氧基-苯巯基)-5,8-二甲氧基萘-1,4-二酮具有良好的抗肿瘤活性。 展开更多
关键词 2-(4-甲氧基-苯巯基)-5 8-二甲氧基萘-1 4-二酮 Hep3B细胞系 细胞活力 细胞凋亡
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铜基催化剂上丙二醇甲醚脱氢制甲氧基丙酮
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作者 林涛 程杰 +10 位作者 张炳亮 范嘉煊 高明明 郑金欣 晁哲 李国斌 马晓云 杜宏芃 王雷 魏入朝 张力 《工业催化》 CAS 2024年第1期46-49,共4页
采用混合法制备5种铜基催化剂CuAlO_(x)、CuSiO_(x)、CuZnAlO_(x)、CuMnAlO_(x)和CuZnCrO_(x),在固定床反应器中考察催化剂在丙二醇甲醚直接脱氢生成甲氧基丙酮反应中的活性。结果表明,CuZnAlO_(x)催化剂性能较好,丙二醇甲醚转化率为48.... 采用混合法制备5种铜基催化剂CuAlO_(x)、CuSiO_(x)、CuZnAlO_(x)、CuMnAlO_(x)和CuZnCrO_(x),在固定床反应器中考察催化剂在丙二醇甲醚直接脱氢生成甲氧基丙酮反应中的活性。结果表明,CuZnAlO_(x)催化剂性能较好,丙二醇甲醚转化率为48.6%,甲氧基丙酮选择性为99.1%。考察反应温度、氮氢流速和球磨时间对催化剂性能的影响,并进行长周期的催化剂稳定性实验。制备的CuZnAlO_(x)催化剂具有较好的活性、稳定性和工业应用前景。 展开更多
关键词 催化剂工程 铜基催化剂 直接脱氢 丙二醇甲醚 甲氧基丙酮
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A Density Functional Theory Study of Methoxy and Atomic Hydrogen Chemisorption on Au(100) Surface 被引量:2
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作者 M. N’dollo P. S. Moussounda +1 位作者 T. Dintzer F. Garin 《Journal of Modern Physics》 2013年第3期409-417,共9页
The adsorption of CH3O and H on the (100) facet of gold was studied using self-consistent periodic density functional theory (DFT-GGA) calculations. The best binding site, energy, and structural parameter, as well as ... The adsorption of CH3O and H on the (100) facet of gold was studied using self-consistent periodic density functional theory (DFT-GGA) calculations. The best binding site, energy, and structural parameter, as well as the local density of states, of each species were determined. CH3O is predicted to strongly adsorb on the bridge and hollow sites, with the bridge site as preferred one, with one of the hydrogen atoms pointing toward a fourfold vacancy (bridge-H hollow). The top site was found to be unstable, the CH3O radical moving to the bridge –H top site during geometry optimization. Adsorption of H is unstable on the hollow site, the atom moving to the bridge site during geometry optimization. The 4-layer slab is predicted to be endothermic with respect to gaseous H2 and a clean Au surface. 展开更多
关键词 CHEMISORPTION Density Functional CALCULATIONS GOLD methoxy HYDROGEN
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Effects of acut and chronic doses of methoxy acetic acid on hamster sperm fertilising ability
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作者 L.D.C.Peiris H.D.M.Moore 《Asian Journal of Andrology》 SCIE CAS CSCD 2001年第3期209-216,共8页
Aim: To evaluate the effects of acute and chronic doses of methoxy acetic acid (MAA) on in vitro fertilisation byhamster sperm and to correlate the data with the testicular damage. Methods: Adult male hamsters were ga... Aim: To evaluate the effects of acute and chronic doses of methoxy acetic acid (MAA) on in vitro fertilisation byhamster sperm and to correlate the data with the testicular damage. Methods: Adult male hamsters were gavagedwith 3 single doses (0, 80, 160 and 650 mg/kg) and 3 chronic doses (0, 8, 32 and 64 mg/kg daily for 5 weeks) ofMAA in distilled water. After treatment hamsters were killed at weekly intervals and spermatozoa recovered from thedistal cauda epididymides were used to assess the fertilising capacity in vitro. The testes were processed for histologicalexamination. Results; Acute doses showed a significant reduction in sperm fertilising ability from week 3 and 4 af-ter treatment and with the chronic doses, the effects were more extensive and persistent. The results were in correpon-dence with the testicular damages observed. Conclusion: It is evident that both acute and chronic doses of MAAcan impair the sperm function by damaging one or more cell populations in the testis.(Asian J Androl 2001 Sep; 3: 209- 216) 展开更多
关键词 methoxy acetic acid fertilisation in vitro TESTIS SPERMATOZOA fertility
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Why is metallic Pt the best catalyst for methoxy decomposition?
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作者 Ruipeng Ren Cuiyu Niu +3 位作者 Shaoyue Bu Yuhua Zhou Yongkang Lv Guichang Wang 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2011年第1期90-98,共9页
The decomposition of methoxy on Cu(111), Ag(111), Au(111), Ni(111), Pt(111), Pd(111), and Rh(111) has been studied in detail by the density functional theory calculations. The calculated activation barri... The decomposition of methoxy on Cu(111), Ag(111), Au(111), Ni(111), Pt(111), Pd(111), and Rh(111) has been studied in detail by the density functional theory calculations. The calculated activation barriers were successfully correlated with the coupling matrix element V 2 ad and the d-band center (ε d ) for the group IB metals and group VIII metals, respectively. By comparison of the activation energy barriers of the methoxy decomposition on different metals, it was found that Pt is the best catalyst for methoxy decomposition. The possible reason why the metallic Pt is the best catalyst has been analyzed from both the energetic data and the electronic structure information, that is, methoxy decomposition on Pt(111) has the largest exothermic behavior due to the closest p-band center of the CH 3 O among all metals after the adsorption. 展开更多
关键词 methoxy decomposition METALS DFT calculation molecular product d-band center (ε d
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The donor-dependent methoxy effects on the performance of hole-transporting materials for perovskite solar cells
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作者 Mengyuan Li Jinhua Wua +5 位作者 Guoguo Wang Bingxue Wu Zhe Sun Song Xue Qiquan Qiao Mao Liang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第8期10-17,I0001,共9页
In this work, a comprehensive study on the deliberate molecular design and modifications of electron donors is carried out to elucidate correlations between the methoxy effects and donor configuration of hole-transpor... In this work, a comprehensive study on the deliberate molecular design and modifications of electron donors is carried out to elucidate correlations between the methoxy effects and donor configuration of hole-transporting materials(HTMs). Our initial findings demonstrate the donor-dependent methoxy effects. Photovoltaic performance of the HTM with twisted donor highly depends on the methoxy substituent. In contrast, efficiency’s reliance on methoxy is insignificant for the HTM with planar donor. The HTM(M123) featuring the methoxy–substituted carbazole shows a decent power conversion efficiency of 19.33% due to synergistic effects from both planar structure and methoxy. This work gives a guideline to access HTMs reaching both high-performance and good stability. 展开更多
关键词 Hole-transporting materials Donor configuration methoxy effect Perovskite solar cells
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THE SYNTHESIS AND CHARACTERISTICS OF 5-METHOXY-N-ACETYLTRYPTAMINE
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《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期363-363,共1页
关键词 methoxy
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Protection of 3'-methoxy-puerarin against focal brain ischemia and its association with c-fos expression 被引量:2
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作者 Sha Liu Yibing Zhang +3 位作者 Guiyou Du Yong Zhao Haifeng Cui Chunyu Cao 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第27期2094-2099,共6页
The present study established a rat model of focal brain ischemia by occlusion of the middle cerebral artery covered with FeCl3, and investigated the protective effect of 3'-methoxy-puerarin. Hippocampal and cortical... The present study established a rat model of focal brain ischemia by occlusion of the middle cerebral artery covered with FeCl3, and investigated the protective effect of 3'-methoxy-puerarin. Hippocampal and cortical c-fos gene expression was determined using in situ hybridization. Results showed that 3'-methoxy-puerarin reduced neurological deficit scores, cerebral infarcted zone and water content of brain tissues, dramatically increased the activity of catalase and glutathione peroxidase in the ischemia zone of the hippocampus, increased the activity of catalase in the cortex, decreased lipid peroxide and lactic acid contents in the hippocampus and cerebral cortex, and down-regulated c-fos gene expression in brain ischemic rats. Results demonstrated that 3'-methoxy-puerarin exhibited cerebroprotective effects against focal brain ischemia, which involved c-fos gene expression. 展开更多
关键词 focal brain ischemia 3'-methoxy-puerarin puerarin c-fos gene protect neural regeneration
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CATIONIC CONDUCTION IN BLEND COMPLEX OF LITHIUM METHOXY OLIGO (OXYETHYLENE) SULFATE AND COMBLIKE POLYETHER
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作者 Yun Gui ZHENG Qing Zhong XU and Guo Xiang WAN Chengdu Institute of Organic Chemistry, Academia, Sinica, Chengdu 610015, P. R. China 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第10期841-842,共2页
Two kinds of lithium methoxy oligo(oxyethylene) sulfate LiSAEO_8 and LiSAEO_(12) were synthesized. The blend complexes of the salts with P(MEO_(16)—AM) show high cationic conductivity, the transference numbers of lit... Two kinds of lithium methoxy oligo(oxyethylene) sulfate LiSAEO_8 and LiSAEO_(12) were synthesized. The blend complexes of the salts with P(MEO_(16)—AM) show high cationic conductivity, the transference numbers of lithium ion(t_+)in [P(MEO_(16)—AM)/LiSAEO_8] and [-P(MEO_(16)—AM)/LiSAEO_(12)] are 0.93 and 0.98 at 50℃, and their ambient conductivities are 1.4×10^(-5)/cm and 7.7×10^(-6)S/cm respectively. 展开更多
关键词 AM MEO OXYETHYLENE SULFATE AND COMBLIKE POLYETHER CATIONIC CONDUCTION IN BLEND COMPLEX OF LITHIUM methoxy OLIGO
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Synthesis and Crystal Structure of (Z)-Methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)methyl]phenyl}acrylate 被引量:1
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作者 周中振 游文玮 赵培亮 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第10期1574-1578,共5页
The title compound,(Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)-methyl]phenyl}acrylate,was synthesized and determined by X-ray single-crystal diffraction. The crystal belongs to the triclinic syst... The title compound,(Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)-methyl]phenyl}acrylate,was synthesized and determined by X-ray single-crystal diffraction. The crystal belongs to the triclinic system,space group P1 with a = 8.0157(8),b = 12.5748(13),c = 13.3768(14) ,α = 64.770(2),β = 75.720 (2),γ = 89.784(2)°,μ = 0.085 mm-1,Mr = 442.49,V = 1174.1(2) 3,Z = 2,Dc = 1.252 g/cm3,F(000) = 468,T = 294(2) K,R = 0.0603 and wR = 0.1498 for 2644 observed reflections with I 〉 2σ(I). X-ray diffraction analysis reveals that the single crystal contains strong non-classical hydrogen bonds. The preliminary bioassay showed that the title compound exhibits inhibitory activity against the Pseudoperoniospora cubensis and Rhizoctonia solani at the test concentration of 200 mg/L. 展开更多
关键词 synthesis crystal structure (Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)methyl]phenyl}acrylate
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Construction and Characterization of Gal-Chitosan Graft Methoxy Poly(Ethylene Glycol)(Gal-CS-mPEG) Nanoparticles as Efficient Gene Carrier
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作者 JIN Jiting FU Wandong +3 位作者 LIAO Miaofei HAN Baoqin CHANG Jing YANG Yan 《Journal of Ocean University of China》 SCIE CAS CSCD 2017年第5期873-881,共9页
In the present study, galactosylated chitosan(Gal-CS) was conjugated with methoxy poly(ethylene glycol)(m PEG) as a hydrophilic group. The structure of Gal-CS-m PEG polymer was characterized and the nanoparticles(NPs)... In the present study, galactosylated chitosan(Gal-CS) was conjugated with methoxy poly(ethylene glycol)(m PEG) as a hydrophilic group. The structure of Gal-CS-m PEG polymer was characterized and the nanoparticles(NPs) were prepared using ironic gelation method. The study was designed to investigate the characteristics and functions of Gal-CS-m PEG NPs. The morphology of Gal-CS-m PEG NPs was observed by SEM and it was a compact and spherical shape. The size of the NPs was approximately 200 nm in diameter under the ideal process parameters. The interaction between Gal-CS-m PEG NPs and p DNA, and the protection of p DNA against DNase I and serum degradation by Gal-CS-m PEG NPs were evaluated. Agarose gel electrophoresis results showed that Gal-CS-m PEG NPs had strong interaction with p DNA at the weight ratio of 12:1, 4:1 and 2:1 and could protect p DNA from DNase I and serum degradation. Gal-CS-m PEG NPs exhibited high loading efficiency and sustainable in vitro release. The blood compatibility studies demonstrated that Gal-CS-m PEG NPs had superior compatibility with erythrocytes in terms of aggregation degree and hemolysis level. Gal-CS-m PEG NPs showed no cytotoxicity on L929 cells, which is a normal mouse connective tissue fibroblast, but showed inhibitory effects on the proliferation of Bel-7402 cells, which is a liver cancer cell line. In conclusion, Gal-CS-m PEG NP is a bio-safe and efficient gene carrier with potential application in gene delivery. 展开更多
关键词 甲氧基聚乙二醇 纳米粒子 半乳糖基 表征 琼脂糖凝胶电泳 壳聚糖 DNASE 强相互作用
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A New Complex [Ni(L)_2]·2H_2O Containing an Interesting Six-membered Water Ring (HL=2-Iminomethyl-6-methoxy-phenol)
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作者 张淑华 曾明华 梁宏 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第7期785-788,共4页
A new complex, [Ni(L)2]·2(H2O) I (HL = 2-iminomethyl-6-methoxyphenol), has been synthesized and structurally determined. The crystal belongs to the trigonal system, space group R3- with a = 1.9341 (3), b ... A new complex, [Ni(L)2]·2(H2O) I (HL = 2-iminomethyl-6-methoxyphenol), has been synthesized and structurally determined. The crystal belongs to the trigonal system, space group R3- with a = 1.9341 (3), b = 1.9341 (3), C = 1.2048(2) nm, V = 3.9029(11) nm^3, Mr = 395.05, Z = 9, Dc = 1.513 g·cm^-3, F(000) = 1854,μ= 1.153 mm^-1 and S = 1.014. Each Ni^Ⅱ atom is four-coordinated by two N and two O atoms from two different L anions to give a slightly distorted square-plane geometry. The complex forms a 3-D network structure through N-H...O and O-H...O hydrogen bonds containing an interesting six-membered water ring. 展开更多
关键词 six-membered water ring 2-iminomethyl-6-methoxy-phenol structure
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Two Fluorescent Complexes Assembled by Schiff Base 2-Methoxy-6-(phenyliminiomethyl) Phenolate Ligand
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作者 单亦韩 陈小菊 +1 位作者 秦毅 赵国良 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第6期811-816,共6页
Two d10 metal complexes Zn(NCS)2(C14HI3NO2)2 (1) and [Cd(NO3)2(CI4HI3NO2)2]. 4H20 (2) assembled by 2-methoxy-6-(phenyliminiomethyl) phenolate ligand (C14H13NO2, HL) have been synthesized and characteri... Two d10 metal complexes Zn(NCS)2(C14HI3NO2)2 (1) and [Cd(NO3)2(CI4HI3NO2)2]. 4H20 (2) assembled by 2-methoxy-6-(phenyliminiomethyl) phenolate ligand (C14H13NO2, HL) have been synthesized and characterized by elemental analysis, IR and TG The single-crystal X-ray diffraction studies demonstrated that complex 1 crystallizes in monoclinic, P21/c space group with a = 17.321(7), b = 11.781(0), c = 15.593(2) A, fl = 110.273(6)°, V = 2984.95 A3, Z = 4, C30H26N404SzZn, Mr = 636.04, F(000) = 1312, Dc = 1.415 g/cm3,μ(MoKa) = 1.004 mm"1, the final R = 0.0403 and wR = 0.0900 for 21441 observed reflections with I 〉 20(/). Complex 2 is of monoclinic system, space group C2/c with a = 16.7767(2), b = 10.8989(2), c = 17.4928(2) A, fl = 90.614(9)°, V= 3198.37 A3, Z = 4, C28H34N4O14Cd, Mr= 731.25, F(000) = 1528, Dc = 1.568 g'cm^-3, μ(MoKa) = 0.757 mm-1, the final R = 0.0361 and wR = 0.0857 for 19811 observed reflections with I 〉 2σ(I). The two complexes were formed by Schiff base 2-methoxy-6-(phenyliminiomethyl) phenolate ligand and formed a 3D supramolecular architecture by π-πstacking interactions. Moreover, the complexes are luminescent in the solid state. These observations indicate that the complexes are promising system for the development of potential photoactive materials. 展开更多
关键词 d^10 metal complex 2-methoxy-6-(phenyliminiomethyl) phenolate ligand crystal structure luminescent
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Synthesis of 1-Bromo-3-methoxy-4-propoxy-5-iodobenzene——A Novel Efficient Process for the Synthesis of Brominated Aromatic Compound
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作者 HongXinSHI HuiLIN GérardMANDVILLE 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第3期288-291,共4页
The reaction of aromatic carboxylic acid with oxalyl chloride gives rise to the corres- ponding acid chloride which without purification is treated with the sodium salt of mercapto- pyridine oxide in the presence of... The reaction of aromatic carboxylic acid with oxalyl chloride gives rise to the corres- ponding acid chloride which without purification is treated with the sodium salt of mercapto- pyridine oxide in the presence of 2,2-azo-bisisobutyronitrile (AIBN), radical initiator to give a brominated aromatic compound. After etherification and oxidation, 5-iodovaniline was converted to trisubstituted benzene carboxylic acid which give 1-bromo-3-methoxy-4-propoxy-5-iodo- benzene by this new brominating process with a yield of 74 %. 展开更多
关键词 Synthesis radical substitution 1-bromo-3-methoxy-4-propoxy-5-idiobenzene bromi- nation.
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Cooperative C–H…O H-bonds in ‘Bay Area’and Crystal Structure of 1-(4-Methylphenyl)-3-(4-methoxyphenyl)-2-propene-1-one
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作者 王雷 陆澄容 +1 位作者 张勇 张德纯 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第2期191-195,共5页
The title compound (C17H16O2, Mr = 252.30) crystallizes in the monoclinic system, space group P21/c with a = 11.5763(14), b = 11.0321(11), c = 11.5094(13) ?, β = 114.581(3)o, V = 1336.7(3) ?3 , Z = 4, Dc = 1.254 g/... The title compound (C17H16O2, Mr = 252.30) crystallizes in the monoclinic system, space group P21/c with a = 11.5763(14), b = 11.0321(11), c = 11.5094(13) ?, β = 114.581(3)o, V = 1336.7(3) ?3 , Z = 4, Dc = 1.254 g/cm3, μ(MoKa) = 0.081 cm-1 and F(000) = 536.00. The final R and wR are 0.0527 and 0.1285, respectively for 3058 observed reflections (I > 2σ(I)). In the title molecule, two phenyl rings are rotated oppositely with respect to the central part C(1)–C(2)=C(3)– C(4) (plane 3) and the dihedral angle between them is 14.8o. The phenone O(1) atom deviates from plane 3 by 0.291 ?. In the crystal the molecules form H-bond chains of R2 (6) and R2 (5) types 1 1 along [001]. The molecule chains interacted through three cooperative C–H…O H-bonds (R3 (11)) 1 in the ‘bay area’ (Fig. 3), extending along [010] and forming layer (100). Between the layers, there exist C–H/π interactions along [101]. Studies on the cooperative C–H…O H-bonds R3 (11) in the 1 similar crystals are also presented. 展开更多
关键词 methoxy-4'-methyl-chalcone cooperative C–H…O hydrogen bonds crystal structure CHALCONE
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