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Trans-stilbene is a type of organic compound with the chemical formula C14H12. It is a colorless solid at room temperature and has a melting point of around 49-50 degrees Celsius.
The melting point of a substance is the temperature at which it transitions from a solid to a liquid. It is a physical property that is determined by the strength of the intermolecular forces between the particles of the substance. These intermolecular forces can be either attractive or repulsive, and they affect the energy required to change the state of the substance.
In the case of trans-stilbene, the melting point is relatively low compared to other compounds. This is due to the fact that the intermolecular forces between the stilbene molecules are relatively weak. The molecules have a planar, flat structure, which allows them to slide past each other easily when they are in a liquid state. This results in a lower melting point compared to compounds with stronger intermolecular forces, such as those with a more compact, three-dimensional structure.
The melting point of trans-stilbene can be affected by various factors, such as the purity of the sample, the presence of impurities, and the pressure and humidity of the environment. For example, if the sample contains impurities or contaminants, the melting point may be higher due to the presence of additional intermolecular forces between the impurities and the trans-stilbene molecules.
In addition to its melting point, trans-stilbene has a number of other physical and chemical properties that make it useful in a variety of applications. It is a good solvent for many organic compounds, and it is also used as a starting material for the synthesis of other chemicals. It has been used in the production of dyes, pigments, and pharmaceuticals, and it has been studied for its potential use as a material for solar cells.
Overall, the melting point of trans-stilbene is an important physical property that determines its behavior at different temperatures. Its low melting point and other properties make it a useful compound in a variety of applications, and its properties continue to be studied for potential new uses.
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GHS Signal Word: Warning EINECSNumber : 203-098-5 RTECSNumber : WJ4926500 TSCA : TSCA. This compound falls under the category of diarylethenes. Volatilization from water surfaces may be an important fate process based upon this compound's estimated Henry's Law constant. Phenyl groups are closely related to benzene and can be viewed as a benzene ring, minus a hydrogen, which may be replaced by some other element or compound to serve as a functional group. This compound has a high melting point compared to its cis isomer.
For example, using tert-butyl hydroperoxide, oxidation of cis-stilbene produces 0. Moreover, this compound is useful in manufacturing dyes, as grain medium in dye lasers, etc. Crystallise it from EtOH. The half-life for the reaction in air with hydroxyl radicals is estimated to be 6 hours. However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment. X-ray topographic study of growth defects of trans-stilbene crystals grown from solutions.
Literature References Asymmetric dihydroxylation with N-methylmorpholine N-oxide, in the presence of osmium tetroxide and dihyroquinidine 4-chlorobenzoate, has been described: Org. Here, cis isomer of stilbene is named Z-stilbene. May react exothermically with reducing agents to release gaseous hydrogen. Hence, an addition reaction takes place an 1,2-dibromo-1,2-diphenylethane is formed. The reaction is stereospecific through an anti addition to the double bond.
Further, it is used as raw material in organic synthesis. Figure 01: Structure of Cis Stilbene There are two isomers of stilbene: E isomer and Z isomer. With a mind rooted firmly to basic principals of chemistry and passion for ever evolving field of industrial chemistry, she is keenly interested to be a true companion for those who seek knowledge in the subject of chemistry. Systematic Organic Chemistry: Modern Methods of Preparation and Estimation. If released into water, trans-1,2-diphenylethylene is expected to adsorb to suspended solids and sediment based upon its estimated Koc. Precautionary Statement s P264: Wash skin thoroughly after handling. Which reagent are used to bromination of trans-stilbene reaction? What is the major product of bromination of propane? It is also involved in transition metal catalyzed asymmetric epoxidation and dihydroxylation.
Is stilbene polar or nonpolar? Explained by FAQ Blog
P273: Avoid release to the environment. H319: Causes serious eye irritation. This practical involves the bromination of trans-stilbene using a 10% bromine dichloromethane solution. To a solution of trans-stilbene in acetic acid was added a mixture of sodium bromide and sodium bromate at room temperature with stirring by a glass rod. Uses Manufacture of dyes and optical bleaches, crystals are used as phosphors and scintillators.
For solid residues use container C. What happens when HBr is added in excess? USA: CRC Press, Inc. A, 1025, 2004, 255-261. What is the melting point of meso stilbene dibromide? What is Cis Stilbene? Classified as a E stereochemistry, meaning that the phenyl groups are located on opposite sides of the double bond, the opposite of its cis-stilbene. At room temperature and pressure, this compound occurs in a liquid state.
Is stilbene polar or nonpolar? The chemical formula and molar mass of this compound are exactly similar to that of trans stilbene because they are structural isomers. What is a precursor for Stilbenes? Further, it is used as raw material in organic synthesis. The product of this reaction, 1,2-dibromo-1,2-diphenylethane, has two stereogenic What is the molecular formula for trans stilbene? Limited monitoring data indicate that non-occupational exposure can occur from the ingestion of contaminated drinking water. The major product from the reaction of excess HBr in the presence of peroxides to terminal alkynes are the 1,2-dibromoalkanes. In trans-stilbene-oxide, the oxygen was not derived from the H2O2. If released to soil, trans-1,2-diphenylethylene is expected to have no mobility based upon an estimated Koc of 9,850. The information given is designed only as a guide for safe handling and use.
Other solubilities: soluble in 90 parts cold alcohol,freely soluble in benzene and ether Formula Weight 180. When considering the properties and applications of cis stilbene, it has the specific ability to undergo electrocyclic reactions. Conclusion: The molecule is polar. The key difference between cis and trans stilbene is that in cis stilbene, the two phenyl groups are in the same side of the double bond whereas, in trans stilbene, the two phenyl groups are in the opposite sides of the double bond. GHS Hazard and Precautionary Statements Hazard Statements: H302-H319 Harmful if swallowed.
