Сl4Si←O=C[N(CH3)2]2complexstructurequantum-chemical calculationsnuclear quadrupole resonancepopulation of atomic orbitalsTo determine the structure of the SiCl 4 complex with tetramethylurea, its possible structures of composition 1 : 1 and 1 : 2 have been calculated by the RHF, B3LYP, and ...
The structure of C5H5NiC5H5C2(CO 2CH3)2 has been determined from an X-ray analysis. The crystals contain four molecules in a monoclinic unit cell of symmetry Cc and dimensions a = 13.40 ± 0.02 ., b = 13.78 ± 0.02 ., c = 7.88 ± 0.01 ., and β = 94°45′ ± 10′. Final ...
(CH3)3N(O) 分子量(Molecular Weight) 75.11 外观(Appearance) 粉末 纯度(Purity) ≥98% 溶解性(Solubility) 溶于水和DMSO 结构式(Structure) 运输和保存方法 冰袋运输。粉末直接保存于-20℃,有效期3年。建议分装后-20℃干燥保存,避免反复冻融。
一、CH1N、CH2N、CH3N是高级定时器才有的引脚,是CH1、CH2、CH3的互补引脚,用来做三相电机控制的。二、ETR首先定时器的时钟来源有4种:1、内部时钟(CK_INT)2、外部时钟模式1 Arttronix2021-08-19 08:58:30 stm32f30x的TIM1的ch3和ch4产生相位相差180度的PWM波 ...
*CHO经过多次质子-电子耦合过程形成* CH3O是决定选择性的中间步骤,如图5b所示,在LaCu/CN上,将*CHO还原为* CH3O是一个连续的放热过程,而Cu/CN上从*CHO到* CH3O是吸热的,在能量上不太有利。图5c表明, LaCu/CN的能带中心能比Cu/CN更接近费米能级,增强了中间体在CO2还原催化剂上的结合。LaCu/CN中的电子云...
值得注意的是,化合物1的ROESY谱显示,δH2.68 (H-19b)/3.34 (H-20), δH3.34 (H-20)/3.11 (H-16), δH 3.11 (H-16)/4.65 (H-5), δH 4.65 (H-5)/3.47 (N-CH3), δH 3.47 (N-CH3)/4.12 (H-6b), 以...
Synthesis, crystal structures and magnetic properties of cyanide- and phenolate-bridged [M(III)NiII]2 tetranuclear complexes (M=Fe and Cr). The binuclear complex NiII2L(H2O)2(ClO4)2(1) and the neutral tetranuclear bimetallic compounds [{M(III)(phen)(CN)4}2{NiII2L(H2O)2}].2CH3CN ...
N,N-Dimethylacetamide structure CAS No. 127-19-5 Chemical Name: N,N-Dimethylacetamide Synonyms DMA;DMAC;Dimethyl acetamide;CH3CON(CH3)2;N,N-Dimethylacetamide, 99%, pure;dimethylacetamid;N,N-Dimethylethanamide;Acetic acid dimethylacetamide;DMAC, Dimethylacetamide;U-5954 ...
(from refinery gas orby cracking higher hydrocarbons).The fourth member of the alkaneseries, it has a straight chain ofcarbon atoms and is isomeric with2-methylpropane (CH3CH(CH3)CH3,formerly called isobutane). It can easilybe liquefied under pressure and issupplied in cylinders for use as a...
Crystal structure of di-μ-ethoxy-di-1,3-bis[benzimidazol-2-yl]propane-dicopper(II)perchlorate ethanol-solvate, (Cu(C17H16N4)(CH3CH2O))2(ClO4)2(C2H5OH)2 Not Available Bernardinelli, G,Kubel-Pollak, A,Ruttimann, S,... - 《Zeitschrift Für Kristallographie》 被引量: 11发表: 1993年...