Ch. 3 - An Introduction to Organic Compounds: Nomenclature, Physical Properties, and Structure

Bruice8th EditionOrganic ChemistryISBN: 9780135213711Non è quello che usi tu?Cambia libro di testo

Bruice 8th Edition

Ch. 3 - An Introduction to Organic Compounds: Nomenclature, Physical Properties, and Structure

Problema 19a

Capitolo 3, Problema 19a

Draw a condensed and a skeletal structure for each of the following:
a. 3,4-diethyl-2-methylheptane

Guida verificata passo dopo passo

Step 1: Understand the IUPAC name '3,4-diethyl-2-methylheptane'. The parent chain is 'heptane', which means it is a seven-carbon straight chain alkane. The substituents are located at carbons 2, 3, and 4, as indicated by the name.

Step 2: Identify the substituents. The '2-methyl' indicates a methyl group (-CH₃) attached to the second carbon of the heptane chain. The '3,4-diethyl' indicates two ethyl groups (-CH₂CH₃), one attached to the third carbon and the other to the fourth carbon.

Step 3: Draw the condensed structure. Start with the seven-carbon chain (heptane) and add the substituents at the appropriate positions. For example, at carbon 2, add a -CH₃ group, and at carbons 3 and 4, add -CH₂CH₃ groups.

Step 4: Draw the skeletal structure. Represent the seven-carbon chain as a zigzag line, with each vertex representing a carbon atom. Add the substituents as lines branching off the main chain at the appropriate positions. Use shorter lines for methyl groups and longer lines for ethyl groups.

Step 5: Double-check the structure to ensure all carbons have four bonds and the substituents are placed correctly according to the IUPAC name. Verify that the condensed and skeletal structures are consistent with each other.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.

Durata del video:

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Condensed Structural Formula

A condensed structural formula is a way of representing a chemical compound that shows the arrangement of atoms in a molecule without depicting all the bonds explicitly. In this format, groups of atoms are often grouped together, and hydrogen atoms attached to carbon are usually implied rather than shown. This method provides a clear and concise way to visualize the molecular structure while maintaining essential information about connectivity.

Video consigliato:

06:06

How to interpret condensed structures.

Skeletal Structure

A skeletal structure, also known as a line-angle formula, is a simplified representation of a molecule where carbon atoms are represented by vertices or ends of lines, and hydrogen atoms are omitted for clarity. Each vertex represents a carbon atom, and the implicit hydrogen atoms are assumed to satisfy carbon's tetravalency. This format is particularly useful for visualizing larger organic molecules, as it reduces clutter and highlights the overall framework of the compound.

Video consigliato:

04:03

How bondline is different from Lewis Structures.

IUPAC Nomenclature

IUPAC nomenclature is a systematic method for naming organic chemical compounds based on their structure. It provides rules for identifying the longest carbon chain, substituents, and their positions, which is essential for accurately interpreting and drawing chemical structures. In the case of 3,4-diethyl-2-methylheptane, understanding the nomenclature helps in determining the correct arrangement of carbon chains and substituents in both condensed and skeletal forms.

Video consigliato: