What is the difference between tectonic isomerism, conformational isomerism, and conformational isom

Structural isomerism, configuration isomerism, and conformational isomerism are all isomerism, with the same molecular formula, and the main difference is that the arrangement of atoms in the molecule is different.

1. Structural isomerism: it has the same molecular formula, but the bonding mode is different, and the order and mode of atom or group connection are different.

The functional group in the figure below.

Location heterogeneity. <>

2. Configuration isomerism: the isomerism phenomenon caused by the different spatial arrangement of atoms in macromolecules. Including cis-trans isomerism.

3. Conformational isomerism: the molecular formula is the same, the bonding is the same, and the atomic space orientation is different, but it can be rotated by one or more sigma.

keys transform into each other. In the figure below, ethane has two conformations: overlapping and crossing.

Fine) structural isomerism: the atomic connection order is different, and most of them are carbon chain isomerism; Configurational heterogeneity: the atoms are connected the same, but the arrangement of space is different; Conformation: Different spatial arrangement of atoms due to rotation around the bond (sharp).

Conformational isomerism is caused by the rotation of carbon-carbon seigama bonds, while configuration isomerism includes cis-trans isomerism and optical rotation isomerism.

Different in nature:Tectonic isomerism is made up of the same number of atoms of the same element, but their atoms are arranged in different ways. That is, the molecular formula is the same, but the order and way in which the atoms in the molecule are connected to each other are different.

Isomers learned in high school.

That's all there is to it. Conformational isomerism is the rotation or twisting of carbon and carbon single bonds by organic molecules with a certain configuration, which makes the molecules or clusters of atoms due to the rotation or distortion of carbon single bonds (not breaking the bonds).

A stereoisomeric phenomenon that produces different arrangements in space.

Molecules have various conformational isomers, and at room temperature it is always the dominant conformation with its most stable conformation as the dominant form of existence. Deviation from the dominant conformation will produce torsional tension, so the conformational isomers must overcome the torsional tension when they are converted into each other. Generally 12 20kJ mol.

However, molecular collision at room temperature can produce 84 kJ mol of energy, so it is difficult to separate at room temperature.

Characteristics of conformational, conformational isomers.

It is important to note that since a single bond can rotate freely, the atoms or groups in the molecule will produce different arrangements in space, and this particular form of arrangement is called conformation. The isomers that result from the rotation of a single bond are called conformational isomers (or rotational isomers). Each conformational heterohole plum structure is the same substance.

Key. Rotate around and an infinite number of conformational isoforms can be generated. One of the dihedral corners.

The conformation of 0° is an overlapping conformation, and the conformation of a dihedral angle of 60° is a cross conformation. Overlapping and cross-conformations are two extreme cases that are also known as limit conformation.

It belongs to isomers.

It is a stereoisomerism phenomenon in which the atoms or clusters of atoms of the molecule are arranged differently in space due to the rotation or distortion of carbon and carbon single bonds (not breaking the bonds). In some literature, it is called rotational isomerism. It is a form of isomerism and is mostly found in organic matter.

For example, n-butane is jagged at low temperatures, and when viewed sideways, methyl groups and hydrogen can have different projections, such as orthogonal, anticross, coincidental, and a large number of transition states. Among them, the reverse crossing energy is the lowest and the coincidence energy is the highest, but because the energy difference is very small, it can be separated at room temperature.

Types of isomerism

1. Structural isomerism: carbon chain isomerism, isomerism caused by the different shapes of carbon chains in the molecule, such as balance n-butane and isobutane jujube, position isomerism, isomerism due to the different positions of substituents or functional groups on the carbon chain or carbon ring.

2. Configuration isomerism: a kind of stereoisomerism, caused by the fact that the double bond cannot rotate freely, generally refers to the isomerism of the double bond of the olefin or the substituent of the polysubstituted cyclic hydrocarbon located on different sides of the ring. Geometric isomerism can also occur in cyclic hydrocarbons.

The above content refers to Encyclopedia - Isomerism Phenomenon.

The above content refers to Encyclopedia - Conformational Heterogeneity.

Conformational isomerism refers to the rotation or twisting of carbon and carbon single bonds (not breaking the bonds) of organic molecules with a certain configuration.

A stereoisomeric phenomenon that produces different arrangements in space.

Conformational analysis is a theory that studies the influence of conformation on the physical and chemical properties of molecules. The use of conformational analysis can explain some complex reaction phenomena, and the physicochemical properties of many organic substances can be inferred, which can help us understand some physiologically active organic molecules. Therefore, conformational analysis is important for carbohydrates, terpenes.

Steroids and alkaloids.

and other research on the active ingredients of traditional Chinese medicine, which is of considerable importance.

Conformational isomers are the main properties

1. In terms of cause, conformation is the spatial arrangement of atoms caused by the rotation within a single bond; The configuration is made up of chemical bonds.

The spatial arrangement of the fixed atoms.

2. In terms of change, when the conformation changes, there is no need to break the chemical bond, and the energy required is less (sometimes the thermal movement of the molecule is enough), and it is easier to change; When the configuration changes, the chemical bond needs to be broken, and the energy required is large and cannot be easily changed.

3. In terms of separation, different conformations cannot be separated by chemical methods, while different configurations can be separated by chemical methods.

4. In terms of number, the number of stable conformations is only statistical, and the number of stable conformations is much more than that of regular configurations; The number of configurations of regular spike cultivation is countable.

1.Carbon chain isomerism is the phenomenon of isomerism due to the different shapes of carbon chains in molecules.

2.Positional isomerism due to substituents or functional groups.

Isomerism occurs due to different positions on the carbon chain or on the carbon ring.

3.Functional group isomerism is an isomerism in a molecule due to different functional groups.

4.Stereoisomerism: The structure is similar, but the structure is different due to small deviations.

Stereoisomerism includes:

1) C-trans isomerism: a kind of stereoisomerism, caused by the inability of double bonds to rotate freely, generally refers to olefins.

The substituents of the double bonded or multi-substituted cyclic hydrocarbons are haunted by isomerism caused by different sides of the ring.

2) Optical isomerism: constructing the same molecule, such as deflecting one plane polarized light to the right and the other to the left. then the two are mutual auspicious isomers.

5.Conformational isomerism: The conformation of the same compound can be rotated from one to another by a single bond, then these two are conformational isomers of each other.