Draw both condensed and line structures corresponding to the...

Key Concepts

IUPAC Nomenclature

IUPAC nomenclature involves systematically naming organic compounds by identifying the longest continuous carbon chain (or ring), numbering the chain to assign the lowest possible locants to functional groups (like double or triple bonds) and substituents, and indicating the type and position of multiple bonds and branches. This set of rules ensures that a given name uniquely corresponds to a single structure.

Functional Groups (Multiple Bonds)

Functional groups such as alkenes and alkynes, which contain double and triple bonds respectively, are key in determining the molecule's reactivity and geometry. Their positions within the main chain (or ring) are identified in the compound's name, influencing both its physical properties and systematic numbering.

Substituents and Branching

Branches or substituents, such as methyl groups, are indicated in the name with their positions on the main carbon chain. The position and number of these substituents are carefully assigned to minimize numerical locants and to reflect the true structure of the molecule.

Condensed Structural Formula

The condensed structural formula provides a shorthand representation of the molecule by writing out the groups of atoms in sequence without explicitly showing every bond. This form conveys the connectivity of the molecule in a compact way, incorporating the main chain and all substituents.

Line-bond (Skeletal) Structures

Line-bond or skeletal structures are diagrammatic representations where carbon atoms are assumed to be at the vertices and ends of lines. These diagrams simplify complex molecules by allowing chemists to quickly visualize the framework of a molecule, including its rings, branches, and multiple bonds.

Cyclic Structures

Cyclic structures involve rings of atoms, and when indicated in the IUPAC name (for example, by using the term 'cyclo'), they require special attention in numbering and placement of substituents and multiple bonds. Their representation, both in condensed and line-bond forms, clearly shows the cyclic backbone and the position of any attached groups.

Transcript

00:01 Let's discuss the design question.

00:03 The question is draw both condense and line structures corresponding to the following ipec names.

00:12 So here we have to draw, we have given ipec name, international union pured and applied chemistry, internationally accepted names, ipec name.

00:31 Given ipec names we have in next, we have to draw the and then we have to draw a line structures, line structures.

01:21 Part a is 3 methyl, 3 methyl hept, hyphen 1 in.

01:41 This means it is an alkyne type of alken.

01:47 And next izepec name is given ipec name is 4, 4.

01:54 4 -hyphen dye dimethyl paint and 2 -hein 2 -hein y and e this is alkyne and part c is 2 methyl hex hex this is also alkyne having 6 carbon in a chain and part d is 1, 3, 3, trimethyl, trimethyl cyclohexene.

03:08 This is also alken.

03:14 First we will draw the condensed structure for the following ipec names.

03:21 Condensed structure is 3 methyl, hept, hept mean 7.

03:29 3 methyl, methyl is attached on the chain, the position number 3, and 1 in.

03:38 Position number carbon number one there is a double bone present so this is three methyl heapt one in so the condensed structure for this is condensed structure will be we have hept seven carbons inner chain so we will draw seven carbon ch3 ch2 and this is condensed structure we have to show only only atoms and not bounds here.

04:13 Ch2, 3 and 4.

04:19 This is 4.

04:22 And this is 3 methyl hept 1 in.

04:27 This is 4 and 5 and 6 and then double bond then.

04:40 This is 7th and here we will start counting from this side.

04:45 Right side from right side because here double bond is.

04:48 Nearest and come in lowest number and here the substitute also come in the lowest number so here this will be one and this will be two this will be three this will be four this will be five this will be six and this will be seven so here the substituent attached on carbon number three one two three yeah the substituent is attached with high l ch3 so this is my name of this structure is 3 methyl, 3 methyl, hept.

05:26 Longest chain is containing 7 carbon atoms, so heapt and in double bone present in the carbon number one, nearest and lowest number.

05:36 So this is the condensed structure.

05:39 And the line structure of this content structure will be here...

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