Brief formula of the structure of the carbohydride dodecanomer

Solution: There are 3 isomers of C5H12.

1. Pentane CH3 (CH2) 3CH3

1. Isopentane CH3CH2CH(CH3)2

1. Neopentane C(CH3)4

Concept] An isomer is a compound with the same molecular formula but a different arrangement of atoms. To put it simply, the phenomenon that compounds have the same molecular formula but have different structures is called isomerism; Compounds with the same molecular formula but different structures are isomers of each other. Many isomers have similar properties.

In organic chemistry, isomers can be homogeneous substances (containing the same functional groups) or non-homogeneous substances (containing different functional groups).

Basic method] The main chain is from long to short, the branch chain is from whole to scattered, the position is from the center to the edge (the hydrocarbon group cannot reach the end), and the arrangement is from ortho to meta, and then to the para position (or on the same carbon atom).

Position: Refers to the position of the branch chain or functional group. Arrangement: refers to the arrangement of branched chains or functional groups.

For example, the isomer of hexane (C6H14) is written as:

Write out the main chain with no branches. ch3—ch2—ch2—ch2—ch2—ch3

Write out the main chain with one less carbon atom, and use this carbon atom as a branched chain, and the position of the branch chain on the main chain is from the center to the edge, but not to the end.

Write down the backbone chain with less than two carbon atoms, and connect the two carbon atoms as branches to the ortho, meta, or the same carbon atom of the carbon atoms on the main chain.

Therefore, there are 5 isomers of hexane (C6H14).

The first is the alkene, which has 1-hexene [ch2 = chch2ch2ch2ch -hexene [ch3ch = chch2ch2ch3 (note that there is a pair of cis-hexene [ch3ch2ch=chch2ch3 (there is a pair of cis-trans isomers -methyl-1-pentene [ch2=c(ch3)ch2ch2ch-methyl-2-pentene [ch3c(ch3)=chch2ch-methyl-2-pentene[ch3ch=CHCH(CH3)2 (There is a pair of cistrans isomers -Methyl-1-pentene [CH2=CHCH2CH2(CH-methyl-1-pentene[CH2=CHCH(CH3)CH2CH3 Note that carbon 3 is a chiral carbon atom, so there is a pair of optical isomers -methyl-2-pentene[CH3CH=C(CH3)CH2CH3 (there is a pair of cis-trans isomers-ethyl-1-butene[CH2=C(C2H5)CH2CH,3-dimethyl-1-butene[ CH2 = CHC (CH, 3-dimethyl-1-butene [CH2 = C(CH3) CH(CH, 3-dimethyl-2-butene [(CH3)2C = C(CH3)2].

The above are isomers belonging to olefins, and if cis-trans isomers and optical isomers are not considered, there are thirteen kinds; Considering the cis-trans isomer and not considering the optical isomer, there are seventeen kinds; Considering cis-trans isomers and optical isomers, there are eighteen species.

In addition, since it is an isomer of an alkene, it may also be a naphthene. The details are as follows (this one will not write the structure shorthand):

There are 1,2,3-trimethylcyclopropane (this one also has a pair of cistrans isomers -methyl-2-ethylcyclopropane (note that carbon 1 and carbon 2 are both chiral carbon atoms, so there are 4 optical isomers, 1,2-trimethylcyclopropane (carbon 2 is a chiral carbon atom, there is a pair of optical isomers -n-propylcyclopropane, 1-isopropylcyclopropane, 1-methyl-1-ethylcyclopropane, 1-ethylcyclobutane, 1,1-dimethylcyclobutane, 1,2-dimethylcyclobutane ( Note that carbon No. 1 and carbon No. 2 are both chiral carbon atoms, with 3 optical isomers, two of which are enantiomers of each other, and the other is a racemate, 3-dimethylcyclobutane (this one also has a pair of cis-trans isomers - methylcyclopentane, cyclohexane.

In summary, if only olefins are considered, and cis-trans isomers and optical isomers are not considered, there are thirteen kinds; Considering only olefins, and considering cis-trans isomers, and not considering optical isomers, there are seventeen; Considering only olefins, considering cis-trans isomers and optical isomers, there are eighteen kinds; Considering olefins and naphthenes, without considering cis-trans isomers and optical isomers, there are twenty-five; Considering olefins and cycloalkanes, and considering the cis-trans isomerism of alkenes, without considering the optical isomerism and cycloalkane cis-trans isomerism, there are 29 kinds; Considering alkenes and naphthenes, as well as all cis-trans isomerism and optical isomerism, there are 38 species.

There are many isomers of C5HC10, but there are five types of naphthenes, and there is also a supplement called ethylcyclopropane.

There are three types of naphthenes: 1,1-dimethylcyclopropane; 1,2-Dimethylcyclopropane; Methylcyclobutane.

There are five types of olefins: 1-pentene; 2-pentene; 2-methyl1-butene; 3-methyl1-butene; 2-Methyl2-butene.

There is one type of three-carbon ring, one type of four-carbon ring, and one type of five-carbon ring. There are two types of straight-chain olefins. There are three kinds of one branch. There are 8 types in total.

Isomer of C7H16.

There are 9 types.

They are: ch3ch2ch2ch2ch2ch2ch2ch3, heptane.

CH3CH2CH2CH2CH(CH3)2-methylhexane.

ch3ch2ch2ch(ch3)ch2ch3-methylnaprehexane.

CH3CH(CH3)CH(CH3)CH2CH3 2,3-dimethylpentanohailane.

CH3CH(CH3)CH2CH(CH3)CH3 2,4-dimethylpentane.

CH3C(CH3)2CH2CH2CH3 2,2-Dimethylpentane.

CH3CH2C(CH3)2CH2CH3 3,3-Dimethylspinefinch pentane.

CH3CH2CH(CH2CH3)CH2CH3 2-ethylpentane.

CH3C(CH3)CH(CH3)2 2,2,3-trimethylbutane.

Hope it helps.

-Hexene, [ch = chch ch ch ch].

-Hexene, [ch = chch ch ch ch].

Hexene, Qi trace [ch ch ch = ch ch ch].

Methyl-1-pentene, [ch = c(ch)ch ch ch].

Methyl-2-pentamozole, [CH C(CH)=CHCH CH].

Methyl-2-pentene, [ch ch=chch(ch)methyl-1-pentene, [ch = chch ch(ch)

Methyl-1-pentene, [CH = CHCH(CH)CH].

Methyl-2-pentene, [ch ch=c(ch)ch ch].

Ethyl-1-butene, [CH = C(CH)CHCH]. 3-Dimethyl-1-butene [CH = CHC(CH) 3-dimethyl-1-butene [CH = C(CH) CH(CH) 3-Dimethyl-2-butene [(CH) C = C (CH)

Carbon-7Hydrogen-16 is an organic compound with the formula C7H16, which is a very common alkane with a total of seven isomers. They are n-heptane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, 2,3-dimethylbutane, 2,2,3-trimethylbutane, and 2,2,4-trimethylpentane, respectively.

Of the seven isomers, n-heptane is the simplest and the most common. Its structural formula is ch3-ch2-ch2-ch2-ch2-ch2-ch2-ch3, which is a chain compound composed of seven carbon atoms and sixteen hydrogen atoms. The other six isomers are composed of multiple methyl groups and other units, and their structures are relatively complex.

These seven isomers differ in physical properties (e.g., boiling point, melting point, density, etc.) and chemical properties (e.g., oxidation, reduction). Among them, n-heptane is a colorless and transparent liquid with a melting point of -129 °C and a boiling point of 69 °C, which is relatively volatile. It is mainly used as a solvent, diluent, etc. in chemicals, beauty products and fuels.

Chemically, these seven isomers, since they are all aliphatic hydrocarbons, are relatively stable and not prone to obvious chemical reactions. However, they can still be triggered by oxidants to produce substances such as carbon dioxide and water.

In conclusion, carbon-7-16 is an alkane organic compound composed of seven carbon atoms and sixteen hydrogen atoms, with a total of seven focal high isomers, which are different in structure and physicochemical properties. The different properties and applications of these isomers provide a lot of useful information for the study of organic chemistry and scientific research. <>

C7H16 has 9 isomers, and the structure and name are as follows:

1. Heptane ch3ch2ch2ch2ch2ch2ch3.

Methyl-hexane ch3chch2ch2ch2ch3.

Methyl-hexane ch3ch2chch2ch2ch3. , 3-dimethyl-pentane ch3chchch2ch3. , 4-dimethyl-pentane ch3chch2chch3.

2-Dimethyl-pentane ch3cch2ch2ch3. , 3-dimethyl-pentaneCH3CH2CCH2CH3.

Ethyl-pentane ch3ch2cch2ch3. , 2,3-trimethyl-butaneCH3cCHCH3.

Isomer Properties:

The composition and molecular weight of isomers are exactly the same, while the structure, physical and chemical properties of the molecules are different.

Isomers in organic matter are divided into two categories: tectonic isomerism and nuclear stereoisomerism. Having the same molecular formula but having a different order of attachment of atoms or groups in a molecule is called tectonic isomerism. In molecules, atoms bind in the same order, but atoms or clusters of atoms in space are in different relative positions, which is called stereo clearing and digging isomerism.

Carbon-7Hydrogen-16 is an organic compound with the molecular formula C7H16, which has a variety of isomers, which have different structures but have the same molecular formula and the same relative molecular mass. <>

Summary. Hello, dear <>

According to the questions you provided, we will find the following: There are three isomers of carbon 14 hydrogen and 12 oxygen: methyl carbonate, ethyl carbonate and propyl carbonate.

Isomer of carbon-14-hydrogen 12-oxygen.

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According to the questions you provided, we will find the following: There are three synchronous isomers of Solulu carbon 14hydrogen and 12 oxygen: methyl carbonate, ethyl carbonate and propyl carbonate.

Question 24. It takes so much that it is recommended that you type a description of kissing

Pentane, with the molecular formula C5H12, has three isomers:

N-pentane isopentane (2-methylbutane).

Neopentane (2,2-dimethylpropane).

n-pentane: ch ch ch ch ch

Isopentane: ch ch ch (ch ).

Neopentane: c(ch).

c5h10

Streptohydrocarbons: CH2=CH2CH2CH3, CH3CH=CH2CH3, (CH3)2C=CHch3, (CH3)2CH=CH2, CH2=C(CH3)CH2CH3.

Cyclohydrocarbons: cyclopentane, methylcyclobutane, ethylcyclopropane, dimethylcyclopropane.