Crystal Structure of PCI4(NCH3)2CCI, a Four‐Membered Ring System containing Hexavalent PhosphorusThis work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie.doi:10.1002/anie.196904551Dr. M. L. Ziegler...
原位漫反射傅里叶变换红外光谱(图5a)显示,1048和1377 cm -1处的峰分别属于*OCH3和*CH3基团,是与CO2光还原成CH4的关键中间体。*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...
DMF;DIMETHYLFORMAMIDE;DMFA;amide,n,n-dimethyl-formicaci;Dimethylformamid;HCON(CH3)2;Dimethylforamide;DIMETHYL FORMIDE;N,N-Dimethylmethanamide;EMF CBNumber: CB2854115 Molecular Formula: C3H7NO Lewis structure Molecular Weight: 73.09 MDL Number: ...
(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...
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), 以及 δH 4.12 (H-6b)/7.73 (H-9)之间具有较强的相关,因此H-19b, H-20,...
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 ...
This study focused on how the local structures in pure [N(CH3)4]2ZnBr4 crystal are affected by the partial replacement of Zn2+ ions with Cu2+ ions. The structures and phase transition temperatures TC of perovskite-type [N(CH3)4]2Zn1-xCuxBr4 (x = 0,
Racemic 1, Ph3C+BF4- (1 equiv), and the N,N'-dimethyl 1,2-diamine HN(CH2CH3)CH2CH2(H3CCH2)NH (1 equiv) give [(η5-C5H5)Re(NO)(PPh3)(CH2NH(CH2CH3)CH2CH2NH(CH2CH3))]+BF4-, and the crystal structure of the SReSN,RReRN diastereomer is determined. The ReCH2N conformations ...
分子式 C4H9NO2; CH3CONHCH2CH2OH 分子量 103.12 别名N-乙酰乙醇胺 ;N-(2-羟基乙基)-乙酰胺,N-酰乙醇胺,羟乙基乙酰胺 分子结构式 性状 能溶于水,醇和醚。有类似吡啶的臭味。 质量标准 95% 外观Appearance Colorless to Yellow Viscous Liquid
#define PWM_CONFIG_CH 2 #define PWM_CONFIG_GROUP 3 #define PWM_CH1 0 #define PWM_CH2 1 #define PWM_CH3 2 #define PWM_CH4 3 #define APB1_PRES_VALUE 11 #define APB2_PRES_VALUE 4 const static uint32_t pwm_config[10][4] = ...