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1,2-Dichloroethylene or 1,2-DCE is the name for a pair of organochlorine compounds with the molecular formula C 2 H 2 Cl 2. The two compounds are isomers, each being colorless liquids with a sweet odor. It can exist as either of two geometric isomers, cis-1,2-dichloroethene or trans-1,2-dichloroethene, but is often used as a mixture of the two ...
These trends can be attributed to the fact that the dipoles of the substituents in a cis isomer will add up to give an overall molecular dipole. In a trans isomer, the dipoles of the substituents will cancel out [7] due to being on opposite sides of the molecule. Trans isomers also tend to have lower densities than their cis counterparts ...
1,2-Dibromoethylene, also known as 1,2-dibromoethene and acetylene dibromide, is a dihalogenated unsaturated compound with one bromine on each of the two carbon atoms. There are two isomers of this compound, cis and trans. Both isomers are colorless liquids.
The averaged structure of these isomers of Cp 2 Fe 2 (CO) 4 results in a dipole moment of 3.1 D in benzene. [4] The solid-state molecular structure of both cis and trans isomers have been analyzed by X-ray and neutron diffraction.
An example in organic chemistry of the role of geometry in determining dipole moment is the cis and trans isomers of 1,2-dichloroethene. In the cis isomer the two polar C−Cl bonds are on the same side of the C=C double bond and the molecular dipole moment is 1.90 D.
Dinitrogen difluoride is a chemical compound with the formula N 2 F 2. It is a gas at room temperature, and was first identified in 1952 as the thermal decomposition product of the fluorine azide (FN 3). It has the structure F−N=N−F and exists in both cis and trans isomers, as typical for diimides.
E–Z configuration, or the E–Z convention, is the IUPAC preferred method of describing the absolute stereochemistry of double bonds in organic chemistry.It is an extension of cis–trans isomer notation (which only describes relative stereochemistry) that can be used to describe double bonds having two, three or four substituents.
trans-Dichlorodiammineplatinum(II) is the trans isomer of the coordination complex with the formula trans-PtCl 2 (NH 3) 2, sometimes called transplatin. [1] It is a yellow solid with low solubility in water but good solubility in DMF. The existence of two isomers of PtCl 2 (NH 3) 2 led Alfred Werner to propose square planar molecular geometry. [2]