981 resultados para 2.1 GA
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利用~1HNMR,~(13)CNMR谱研究了2,2’-二(对胺苯甲酯)-1,1’联萘的结构,并通过~1H-~1HCOSY,~(13)C-~1H异核相关及~(13)C-~1H异核远程相关谱进一步地确定了~1H谱和~(13)C谱中各谱峰的归属,为同类化合物的表征提供了一个依据.
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本文用密度泛函方法研究了LaC4n(n=-2,-1,0,+1,+2)分子簇的结构与稳定性。振动频率分析表明,在所提出的九个构型中,当n=-2,0,+1,+2时,稀土位于碳环上最稳定,而当n=-1时,尽管稀土位于碳环上能量最低,但没有找到稳定的构型,我们的结果还指出,稀土元素是分子簇中对外部环境最敏感的部位,即最具有反应活性
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报道了标题化合物〔C14H18Br2OSn〕的合成及晶体结构。该晶体属于单斜晶系,空间点群为P21/c,晶胞参数a=11.711(2),b=9.114(2),c=16.864(3)A,β=102.94(1)°,V=1604.55(0)A3,Mr=480.78,Z=4,Dc=1.99g/cm3,u=65.20cm-1,F(000)=919,R=0.050,Rw=0.050.晶体结构由直接法解出。标题化合物分子中的锡原子被配体的2个碳、2个溴和1个氧原子配位,配位原子呈畸变的三角双锥构型,环已基为椅式构象,五员杂环为信封构象。
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用1H-NMR、13C-NMR和二维核磁共振技术研究了2,2′-二(对氨苯氧基)-1,1′-联萘的结构,并通过1H-1H质子同核相关及13C-1H异核相关谱提供的信息确定了其1H谱和13C谱中各谱峰的归属,为聚合物的表征提供了依据。
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利用1H NMR,13C NMR研究了 2,2’-二(对羧酸苯氧基)-1,1’-联萘结构,并通过1H-1H COSY及13C-1H异核相关谱进一步确定了其1H谱和13C谱中各谱峰的归属,为同类化合物的表征提供了一个依据。
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合成并表征了14种β-烷氧羰乙基三氯化锡与2-羟基-1-萘醛缩苯胺类席夫碱配合物。测定了其中β-丁氧羰乙基三氯化锡与2-羟基-1-萘醛缩对甲苯胺席夫碱配合物的晶体结构。晶体属于三斜晶系,P1-空间群。晶胞参数:a=1.2487(6)nm,b=1.3551(7)nm,c=0.9385(3)nm,α=92.85(3)°,β=104.68(3)°,γ=70.43(4)°,V=1.4464(1)nm3,Dc=1.33g/cm3,Z=2,F(000)=588。配合物为畸变的八面体构型,配体以酚羟基氧原子与锡原子配位,分子内存在着羰基氧原子与锡原子的配键
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报导了标题化合物C_(10)H_(14)OS_2(M_r=214.35)的晶体结构,该晶体属正交晶系,空间群为P2_12_12_1,晶胞参数为a=6.443(3),b=8.980(4),c=18.213(7);V=1053.8(6)3;Z=4,D_x=1.35g/cm~3,F(000)=455,μ=4.5cm~(-1)(MoKa)。最终偏离因子R=0.033,R_w=0.034。分子中的两支C_(sp)2-S键键长近于相等,分别为1.761(3)和1.769(3),C(1)-C(5)键长为1.361(4)。
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用电导法研究了甲醇溶液中稀土硝酸盐及氯化物与穴醚[2,1,1]的配位作用,测定了1:1配合物的稳定常数lgK及摩尔电导ΛML。在甲醇溶液中,稀土氯化物与[2,1,1]配合物的稳定性大于硝酸盐的相应配合物。稀土硝酸盐与[2,1,1]配合物的稳定常数lgK随镧系收缩有明显的钆断效应。电导测定表明,在甲醇溶液中,稀土硝酸盐为弱电解质。轻稀土与[2,1,1]反应后为1:1型电解质,重稀土配合物则属1:2型电解质;稀土氯化物在甲醇中为1:1型电解质,所形成的配合物均为1:2型电解质。
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Two lanthanum(III) [2,2,2]cryptates, [LaCl[2,2,2](H2O)]Cl-2.H2O (1) and [La(CF3SO3)[2,2,2](DMF)] (CF3SO3)(2) (2) have been prepared by the reaction of LaCl3 and La(CF3SO3)(3) with [2,2,2]cryptand, respectively and their crystal structures have been determ
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本文研究了TritonX-100在浊点条件下对钴-4-(5-氯-2-吡啶偶氮)-1,3-二氨基苯(5-Cl-PADAB)络合物的析相条件,在pH4.0~6.0介质中,将胶束溶液加热到92±1℃,保持40min,络合物即被TritonX-100相富集。富集液在575nm测定吸光度,钴含量在0~4μg/5ml范围内服从比尔定律,干扰离子可在TritonX-100析相液中加入H_2SO_4消除。拟定的方法灵敏、简捷,已用于不经分离直接测定人发及自来水中痕量钴。
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本文报道15种新合成的2-硫-1,3,2-氧氮磷杂环戊烷衍生物的 EI 谱.在质量分析离子动能谱、碰撞诱导分解谱、B/E 联动扫描及高分辨精确质量测量的基础上,讨论了这类化合物的质谱裂解机理及特征.着重讨论上述化合物的氧硫异构现象及几种重排反应.
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The title compound, 2-(methoxybenzoyl)-N-phenyt-2-(1,2,4-triazol-1-yl)thioacetamide was synthesized by several reactions from 4-methoxyacetophenone, triazole and phenyl isothiocyanate. The structure was identified by elemental analysis, H-1 NMR, MS and IR. The single crystal structure of 2-(methoxybenzoyl)-N-phenyl-2-(1,2,4-triazol-1-yl)thioacetamide was determined with X-ray diffraction. The preliminary bioassays show that the title compound exhibits weak antifungal activities and plant-growth regulatory activity.
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In order to find leading compounds with an excellent fungicidal activity, the tide compound 2-(1,3-dithiolan-2-yl-idene) -1-phenyl-2-(1,2,4-triazol-1-yl) ethanone was synthesized according to the biological isosterism and its structure was confirmed by means of IR, MS, H-1 NMR and elemental analysis. The single crystal structure of the tide compound was determined by X-ray diffraction. The preliminary biological test shows that the synthesized compound exhibits some biological activities.
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The Ordos Basin is a large-scale craton superimposed basin locating on the west of the North China platform, which was the hotspot of interior basin exploration and development. Qiaozhen oil field located in the Ganquan region of south-central of Ordos Basin. The paper is based on the existing research data, combined with the new theory and progress of the sedimentology, sequence stratigraphy, reservoir sedimentology, petroleum geology, etc, and analyzes systematically the sedimentary and reservoir characteristics in the chang2 and chang1 oil-bearing strata group of Yanchang formation On the basis of stratigraphic classification and comparison study, the strata chang2 and chang1 were divided into five intervals. Appling the method of cartography with single factor and dominance aspect, we have drawn contour line map of sand thickness, contour line map of ratio between sand thickness and stratum thickness. We discussed distribution characteristics of reservoir sand body and evolution of sedimentary facies and microfacies. And combining the field type section , lithologic characteristics, sedimentary structures, the sedimentary facies of single oil well and particle size analysis and according to the features of different sequence, the study area was divided into one sedimentary facies、three parfacies and ten microfacies. The author chew over the characteristics of every facies, parfacies and microfacies and spatial and temporal distribution. Comprehensive research on petrologic characteristics of reservoir , diagenesis types, pore types, distribution of sand bodies, physical properties, oiliness, reservoir heterogeneities, characteristics of interlayer, eventually research on synthetic classifying evaluation of reservoir.The reservoir is classified four types: Ⅰ、Ⅱ、Ⅲ、Ⅳ and pore type, fracture-porosity type. Take reservoir's average thickness, porosity, permeability, oil saturation and shale content as parameters, by using clustering analysis and discriminant analysis, the reservoir is classified three groups. Based on the evaluation, synthetizing the reservoir quality, the sealing ability of cap rock, trap types, reservoir-forming model ,in order to analyze the disciplinarian of accumulation oil&gas. Ultimately, many favorable zones were examined for chang23,chang223,chang222,chang221,chang212,chang12,chang11 intervals. There are twenty two favorable zones in the research area. Meanwhile deploy the next disposition scheme.