What is the standard state of meso-stilbene dibromide?
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). meso-Stilbene dibromide is an organic compound with a formula of (C 6 H 5 CH (Br)) 2.
How to prepare diphenylacetylene from stilbene dibromide?
meso-Stilbene dibromide is an organic compound with a formula of (C 6 H 5 CH (Br)) 2. It is one of three isomeric stilbene dibromide, the others being the pair of enantiomers. It is a white solid. It can be prepared by treatment of (E)-stilbene with bromine. Reaction of stilbene dibromide with base gives diphenylacetylene.
What is the IUPAC name for meso dibromide?
meso -Stilbene dibromide. Names. Preferred IUPAC name. 1,1′- [ (1 R ,2 S )-1,2-Dibromoethane-1,2-diyl]dibenzene. Other names. Stilbene dibromide; meso -1,2-dibromo-1,2-diphenyl ethane. Identifiers. CAS Number. 13440-24-9.
What is meso-1 2-dibromo-1 2-diphenyl ethane?
It is sometimes also written as meso -1,2-dibromo-1,2-diphenyl ethane. It appears as a white crystalline solid and can be used a building block in organic synthesis for various applications.
How many chiral centers do meso compounds have?
two chiral centersThis molecules has a plane of symmetry (the vertical plane going through the red broken line perpendicular to the plane of the ring) and, therefore, is achiral, but has has two chiral centers. Thus, its is a meso compound.
Is stilbene dibromide a meso?
The product of this reaction has two stereogenic centers, and since all three substituents on each stereogenic center are the same (bromine, phenyl, hydrogen), one of the isomers of stilbene dibromide is a meso compound (mp 241-243 °C).
How many stereoisomers are possible for the stilbene dibromide structure?
There are three stereoisomers of stilbene dibromide namely (1R, 2S)-1,2-dibromo-1,2-diphenylethane, (1R, 2R)-1,2-dibromo-1,2-diphenylethane and (1S,... See full answer below.
Do meso compounds have 2 chiral centers?
Meso compounds are achiral compounds that has multiple chiral centers. It is superimposed on its mirror image and is optically inactive despite its stereocenters.
How many stereoisomers of stilbene dibromide are possible in today's reaction if you start from a mixture of Z )- and E )- stilbene 2 3 4 5?
Stilbene exists as two possible stereoisomers.
What is stilbene dibromide used for?
Stilbene is used in manufacture of dyes and optical brighteners, and also as a phosphor and a scintillator. Stilbene is one of the gain mediums used in dye lasers.
What is the melting point of meso stilbene dibromide?
241 °Cmeso-Stilbene dibromideNamesChemical formulaC14H12Br2Molar mass340.058 g·mol−1AppearanceWhite solidMelting point241 °C (466 °F; 514 K)21 more rows
What is a meso compound?
A meso compound is a stereoisomer with two or more chiral centres but no optical activity due to an internal plane of symmetry. Mesomers are compounds with zero net rotation of plane polarised light.
Is Meso optically active?
Because a meso compound is congruent to its mirror image, it is not chiral. Because it is not chiral, a meso compound cannot be optically active.
How many chiral centers are there in meso 2,3-dichlorobutane?
two chirality centers2 Meso compound. Next, we will see another example of a compound containing two chirality centers, 2,3-dichlorobutane, the compound that has the same substituents on C2 and C3 carbons.
How do you calculate chiral centers?
1:436:03Finding Chirality Centers - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo is this carbon a chiral center it turns out that it is we have a methyl group hydroxyl group theMoreSo is this carbon a chiral center it turns out that it is we have a methyl group hydroxyl group the right side of the molecule. And the invisible hydrogen.
How do you find the number of meso compounds?
Number of meso isomers=2(n−1)/2. Total number of optical isomers=2n−1. Number of enantiomers=2n−1−2(n−1)/2.
Why is Z stilbene not planar?
(Z)-Stilbene is sterically hindered and less stable because the steric interactions force the aromatic rings 43° out-of-plane and prevent conjugation.
What is the melting point range of meso stilbene dibromide?
meso-Stilbene dibromideNamesAppearanceWhite solidMelting point241 °C (466 °F; 514 K)Dipole moment0.4-0.9Hazards21 more rows
What is the molar mass of stilbene dibromide?
340.05Stilbene;dibromidePubChem CID53432511StructureFind Similar StructuresMolecular FormulaC14H12Br2-2Molecular Weight340.05Parent CompoundCID 11502 (Benzene, 1,1'-(1,2-ethenediyl)bis-)2 more rows
What is the boiling point of stilbene dibromide?
Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem ModuleDensity:1.6±0.1 g/cm3Boiling Point:323.8±37.0 °C at 760 mmHgVapour Pressure:0.0±0.7 mmHg at 25°CEnthalpy of Vaporization:54.3±3.0 kJ/molFlash Point:173.2±25.7 °C6 more rows