ipl-logo

Grignard Reagent Lab Report

588 Words3 Pages
bulb-icon

Recommended: Grignard reagent benzaldehyde

The purpose of this experiment was to prepare an unknown Grignard reagent and then identify the product by molecular weight and melting point. An IR reading was taken to further identify and validate what product was formed. DISCUSSION AND CONCLUSION Organometallic compounds consist of a carbon that is attached to a metal. The carbon atoms are strongly nucleophilic because of a partial negative charge that they carry. They carry this charge due to them being more electronegative compared to the metal atoms. Carbon-carbon bonds can be created using these nucleophilic carbons. One kind of organometallic is a Grignard reagent. These reagents can create carbon bonds for long carbon-carbon chains. R-MgX is the general formula for a Grignard reagent. …show more content…

Therefore, any reaction with a Grignard cannot be used because of this case that the strong nucleophilic carbon of the Grignard causes. Instead, aprotic solvents like THF and diethyl ether are used. Ethers are mostly used because of the oxygen that makes a complex with the Grignard reagent. Water and acid are highly avoided since they are a proton source. Making sure all glassware and tubes are well dried and that water cannot enter the reaction is a very important step. Many reactions take place in a Grignard reaction. Oxygen reacts with the Grignard to produce peroxides and carbon dioxide reacts to form R-CO2-MgX- complexes. Another reaction, which is inevitable, is a halide reacting with the Grignard. The first two reactions can be eliminated by performing the reaction in a vacuum while the halide reaction can only be

Show More
Related

9-Fluorenone Lab Report

382 Words | 2 Pages

The purpose of this experiment was to learn about metal hydride reduction reactions. Therefore, the sodium borohydride reduction of the ketone, 9-fluorenone was performed to yield the secondary alcohol, 9-fluorenol. Reduction of an organic molecule usually corresponds to decreasing its oxygen content or increasing its hydrogen content. In order to achieve such a chemical change, sodium borohydride (NaBH4) is used as a reducing agent. There are other metal hydrides used in the reduction of carbonyl groups such as lithium aluminum hydride (LiAlH4).

Read More

Lab Report Scaffold: Bromination Of Trans-Cinnamic Acid

904 Words | 4 Pages

Chem 51 LB Experiment 3 Report Scaffold: Bromination of Trans-Cinnamic Acid 1. The goal of this experiment was to perform a halogenation reaction through the addition of two bromides from pyridinium tribromide. This was accomplished by reacting trans-cinnamic acid with pyridinium tribromide. After the reaction took place, melting point analysis was conducted to find out the stereochemistry of the product, which could either be syn-addition, anti-addition, or syn + anti-addition. 2.

Read More

Miracle Gro Lab Report

915 Words | 4 Pages

The data observed and recorded in this lab shows that the concentration of miracle gro’ does affect the growth rate and germination speed of black eyed peas. The data is shown through two graphs and two data tables. The control group in this experiment is the seeds with a 0% concentration of miracle gro’, therefore the seeds with just water. The experimental groups are different concentrations of miracle gro’ including a 10%, 15%, 20%, 25%, and 30% concentration. The variable in this experiment is the amount/concentration of miracle gro’.

Read More

Modern Day Chemotherapy Lab Report

655 Words | 3 Pages

(Gale, Howle, & Walker Jr., 1971) IR spectroscopy can be used to characterize certain organometallic compounds by measuring

Read More

Unknown Compounds

469 Words | 2 Pages

In this lab, three unknown compounds were separated from a mixture and identified by melting point. Unknown mixture #124 has components of acid, base and neutral compound. The compounds were identified by melting point and matched up with the known melting points from a given list. In order to identify the compound it was important to separate by dissolving the mixture in an organic solvent which was not soluble in water, and then extracting the solution first with HCl, and then dilute sodium hydroxide solution. From the separation mixture, the aqueous layer were obtained and labeled as TT-1 (base), TT-2(acid) and TT-3 (neutral) in three different test tubes for later recovery.

Read More

Wittig Reaction Lab Report

1125 Words | 5 Pages

This was proved by utilizing the IR spectrum to verify the C =O was not in the final product as it lacked the 1640 cm-1 peak. The melting point of 113-115 degrees C proved that the final product obtained was the E-Stilbene. The TLC plate proved that the E and the Z product was produced, show cased by the double intensity of the DCM spot to the final product’s spot, both which had an Rf of 0.92. The double intensity proved that both products were produced, but through heating and filtering, the Z-Stilbene was

Read More

Richard Heck Reaction Lab Report

968 Words | 4 Pages

Originally, the reactants in Heck reaction are carbons that use the organic metal palladium as a catalyst to combine the carbons to form a new stable carbon skeleton. In other variants, the base reactants are different but still uses the concept of Heck reaction with the palladium as catalyst. This resulted in the ability to produce organic compounds quickly, effectively and relatively with ease while using less heat/temperature. This discovery built another strong foundation in organometallic chemistry which used different metals to bond with carbon of an organic compound. Generally speaking, this advancement in organometallic chemistry led to the easier production of more complex carbon molecules and organic materials that have been innovated into different fields of

Read More

Stoichiometry And Limiting Reagents Lab Report

1237 Words | 5 Pages

Verna Wang Hannah Palmer CHEM 101-069 Lab 11-19-16 Stoichiometry and Limiting Reagents Lab Report Purpose: We are using the reaction of sodium hydroxide and calcium chloride to illustrate stoichiometry by demonstrating proportions needed to cause a reaction to take place. Background: Just like a recipe would call for a specific amount of one ingredient to a specific amount of another, stoichiometry is the same exact method for calculating moles in a chemical reaction. Sometimes, we may not have enough of or too much of one ingredient , which would be defined as limiting and excess reagent, respectively.

Read More

Grignard Reaction Lab Report

475 Words | 2 Pages

The introduction of the Grignard reaction that was done by the famous chemist Victor Grignard was an important boosting factor in the synthesis of the organometallic compounds. Grignard reaction aids the chemists today when they need to make other compounds such as the alcohol (Crabtree pg 253). The reagents used during the Grignard reactions are called the Grignard reagents or generally as the organomagnesium halide. For the effective Grignard reaction to take place, an addition to a ketone or the usage of aldehyde in the reaction to any of the tertiary or secondary alcohol has to take place (Seyferth pg 432). Grignard reagents are often made through the reaction of the halogenoalkane with small amount of the magnesium according to the equation below: CH3CH2Br ethoxyethane CH3CH2MgBr

Read More

How Does Hydrogen Bonding Change In A Solvent Like Propanane

988 Words | 4 Pages

For our purpose, these solvents don't partake in the reaction.

Read More

Gadolinium Lab Report

1035 Words | 5 Pages

INTRODUCTION Gadolinium is a shiny silvery white, malleable, ductile, metallic, rare earth element which is located in group 3, f-block, period 6 and classified in the series of lanthanides in the elements of periodic table and has 27 isotopes whose half-lives are known with mass numbers from 137 to 164. This element is considered a rare earth element because there is such a small amount of it, and it is not found often in its simplest form. It was discovered in 1880 by Jean Charles de Marignac where it was extracted in from the mine located in Ytterby in Sweden, but it was isolated from metal oxide in 1886 by Lecoc de Boisbaudran who named it after the Finnish Chemist Johan Gadolin who discovered the first rare earth element in 1794. Gadolinium

Read More

Methyl Benzoate Lab Report

418 Words | 2 Pages

The purpose of this laboratory experiment was to react methyl benzoate with nitric acid and identify the position of the substituted nitro group in the final product molecule. Methyl benzoate was added to cool concentrated sulfuric acid in order to amplify the directing effect of the nitro group addition, such that without the sulfuric acid the protonation would have happened at the carbon oxygen double bond. The mixing of concentrated nitric acid with concentrated sulfuric acid was to achieve Reaction 1 from Table 1, formation of the nitronium ion. Both of these reactions were kept at temperatures around 0°C, since they are exothermic reaction and presence of heat could lead to production of unnecessary dinitro by-products.

Read More

Organosilane Research Paper

965 Words | 4 Pages

Typically, due to the dual reactivity of organosilane, both alkoxy group (OR\) and non-hydrolysable organic moiety (X), it is used to couple inorganic or organic substrates such as minerals, metals or cellulose and polymeric matrices such as rubber, thermoplastic or thermosets to improve its physical properties. The applications include adhesion promoter, dispersing/hydrophobing agent and crosslinking agent. 1.3.1 Adhesion Promoter Organosilanes are effective adhesion promoters when used as integral additives or primers for paints, inks, coatings, adhesives and sealants. As integral additives, they must migrate to the interface between

Read More

Emmett Teller Analysis

873 Words | 4 Pages

2CO + O2→2CO2 -------------------- (1) The oxidation of CO was carried out under the following reaction conditions: 100mg of catalyst with feed gas consisting of a lean mixture of 2.5 vol.% CO in air and total flow rate is maintained 60 mL/min. The air feed into the reactor was made free from moisture and CO2 by passing through it CaO and KOH pellet drying towers. The catalytic experiment was carried out in steady state conditions and the reaction temperature was increased from room temperature to 200oC with a heating rate of

Read More

Ninhydrin Lab Report

1833 Words | 8 Pages

MSc FOOD BUSINESS MANAGEMENT AND TECHNOLOGY Food Formulation & Processing Laboratory Practical Submitted to, Submitted by, Janis Kelly Blesson Abraham Mathew PRACTICAL NO- 3 SEPARATION OF AMINO ACIDS BY THIN LAYER CHROMATOGRAPHY Chromatography Chromatography is a technique that is used to separate two or more different

Read More

More about Grignard Reagent Lab Report

Open Document