OH0X2 CHOCH OHOH CH0X3 XVIINH2 NH2 NH0X3 NHNH1 X3 XVIIICH2 CH2 X3 CH3CH3 CH CH1 X3 CH2CH2 X4 CH0X3 CHCH1 X4 CH0X4 68基团贡献法物性估算程序的开发 UNIFAC方法基团优先级和SMARTS编码Priority Group SMARTS Group SMARTS XI C5H5N ds n1 cH cH cH cH cH H2OOH2 C5H4N ds n1 cH cH H0...
Cookson D J,Smith B E. Determination of Carbon C,CH,CH2,CH3,Group Abundances in Liquids Derived from Petroleum and Coal Using Selected Multiplet 13C n.m.r.Spectroscopy[J].Fuel,1983,(01):3438.D. J. Cookson, B. E. Smith, Fuel, 62 , 34 (1983)...
该芯片内置EEPROM,可配置芯片VID、PID、最大电流值、厂商和产品信息字符串等参数。CH347F支持I/O独立供电,支持3.3V、2.5V、1.8V电源电压。 具体介绍可参考: https://www.wch.cn/products/CH347.html https://blog.csdn.net/WCH_TechGroup/article/details/132173756](https://blog.csdn.net/WCH_TechGroup/art...
执行顺序:from -> where -> group by -> having -> select -> order by 首先根据 from 语句计算出一个关系 如果有 where 语句,将 where 语句的谓词应用在关系上 如果有 group by 语句,满足 where 谓词的元组通过 group by 语句放入一个分组 如果用 having 语句,将其应用到每个分组,不满足条件的分组被抛...
b) CH3−CH2−CH2−OH c) CH3−CH2−CH2−O−CH2−CH3 Functional Groups: A functional group is a group of atoms in a covalent molecule that is responsible for the molecule's reactivity and physical prope...
(CH3 )3 C^(+) is more stable than CH3 CH(2)^(+). 02:30 - NO(2) group has -I (inductive) effect. 03:19 Amides and oximes show functional isomerism.Explain 02:21 The functional isomer of methylmethanoate is propanoic acid. 03:01 The IUPAC name of Is 2-Ethyl-3-methylpent-2-en...
Seven-coordinate metal carbonyl derivatives of cis -(CH 3 ) 2 AsC(CF 3 )=C(CF 3 )As(CH 3 ) 2 Cullen,William,R.,... - 《Canadian Journal of Chemistry》 被引量: 0发表: 1976年 The structure determination of three inorganic and two organic compounds by x-ray diffraction (II),Me...
- An ester group (COO) with a methyl group (OCH3) 4. Analyze the Given Options: We have four options to consider: - Option A: CH2=C(CN)COO(C2H5) - Option B: CH2=C(CH3)COO(C2H5) - Option C: CH3CH2=C(CH)CH(CH3)COOCH3 - Option D: CH2=C(CH3)COOCH3 5. Select the Correct...
2 VSS P VSS - - - 8 5 - PD0 I/O/A PD0 TICHIN/OPN1 SDA_1/UTX_1/TICHIN_2 15 9 6 4 VDD P VDD - 16 10 7 - PC0 I/O PC0 T2CH3 NSS_1/UTX_3/T2CH3_2 /T1CH3_1 1 11 8 5 PC1 I/O/FT PC1 SDA/NSS T1BKIN_1/T2CH4_1 T2CH1ETR(2)2URX_3 /T2CH1ETR1)_3/T1BKI...