Introduction to computational chemistry, method, tools, and applications

 Computational Chemistry (Introduction)

Computational chemistry is a branch of chemistry that uses computer simulations, mathematical models and theoretical chemistry methods to study the structure, properties, and reactions of molecules. Instead of doing experiments only in laboratories, scientists use computers to predict molecular behavior, energies, and reaction mechanisms.

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Computational chemistry applies quantum mechanics, molecular mechanics, and statistical methods using computers to understand the chemical environment.

Reaction of alkene part 2

 Reactions of alkenes:

Reactions of alkenes part 1

 Reactions of alkenes:

Stability of Alkenes

 Stability of Alkenes

There are two factors for determining the stability of alkenes

Preparation of Alkene Part 4

 Wittig Reaction

The Wittig Reaction is a very useful method for the synthesis of alkenes. In this reaction, aldehydes and ketones react with phosphorus ylides to form alkenes.

Preparation of Alkene part 3

 Cope Reaction

When tertiary amine oxides are heated to about 150°C, they undergo thermal elimination to form alkenes. This reaction is known as the Cope Reaction.

Preparation of Alkenes Part 2

 Pyrolytic Eliminations

Pyrolytic elimination reactions are those in which the elimination occurs through heating and involves a cyclic transition state. These reactions occur without requiring the addition of external reagents like acids or bases. Instead, the heat provides the necessary energy to facilitate the elimination.