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MERLOT II




        

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Animations of Organic Reactions

        

Animations of Organic Reactions

Logo for Animations of Organic Reactions
Animations of organic reactions
Material Type: Animation
Technical Format: HTML/Text
Date Added to MERLOT: July 01, 2003
Date Modified in MERLOT: September 04, 2014
Author:

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About

Primary Audience: High School, College General Ed, Graduate School
Mobile Compatibility: Not specified at this time
Technical Requirements: A browser
Language: English
Cost Involved: no
Source Code Available: yes
Accessiblity Information Available: no
Creative Commons: unsure

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Discussion for Animations of Organic Reactions

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Avatar for Liliana Soledad Rivera lersundi
2 years ago

Liliana Soledad Rivera lersundi (Faculty)

Me parece un material pertinente para ser utilizado en el aula. Creo que proporciona un buen apoyo didactico para la clase, desde un punto de vista visual, es fácil de utilizar. Sin embargo creo que podría ser mejorado incorporando un texto expicativo para cada tipo de reacción


Avatar for Grace Winschel
3 years ago

Grace Winschel (Student)

The website provides mechanisms for some basic transformations in organic chemistry.

Technical Remarks:

The website doesn't seem to do a good job at differentiating between mechanistic steps and transition states. Bonds are shown moving with double headed arrows, and then, a transition state of bonds breaking and bonds being made is shown. This provides for repetative steps and also leads me to believe students may get confused as to what truly constitutes as a mechanistic step. Some type of differentiation would be appreciated. Also, this is quite a short list of reactions. A more thorough database of reaction mechanisms would be a large improvement.

Time spent reviewing site: 20

Avatar for Ehren Bucholtz
4 years ago

Ehren Bucholtz (Faculty)

The animations would greatly benefit from either a voiced over narrative, or a side text block that explains some of the important aspects of the stereochemistry of reactions. For example, in the SN2 reaction, there is indication of 3 different R groups, but no indication as to inversion of configuration. This is also the case with regiochemistry of the epoxide ring opening reactions. For a student just learning these reactions, there is not a readily apparent reason why bases attack the less substituted carbon and under acid conditions the nucleophile comes in at the more substituted carbon. One other aspect of the acid ring opening that can be confusing it the statement that enantiomers can be formed. It would be very beneficial to have two different colored arrows showing attack of the carbocation from top or bottom and the resultant enantiomeric products in similar colors. I also think the SN1 could be improved by reversing the first and second slide in the sequence. By showing partial charges on the bromine and carbon in the initial slide, it would help students to understand why the bromine leaves and give a reason for the curved arrow. One other aspect lacking is lone pairs of electrons.

Technical Remarks:

The animations played smoothly and did not have any problems. There could be an explanation of the green button can be used to show the entire mechanism without pausing between slides.
Time spent reviewing site: 20 minutes