How to count how many chiral groups and stereoisomers Two nonsuperposable molecules are shown in the windows below:ball & stick vlabelsball & stick v+ labels+--a. How many chiral carbons are there in the molecule on the left?chiral carbon(s)b. What is the total number of stereoisomers in the group that includes the molecule on the left?stereoisomer(s)c. How many chiral carbons are there in the molecule on the right?chiral carbon(s)d. What is the total number of stereoisomers in the group that includes the molecule on the right?stereoisomer(s)e. Are the two molecules enantiomers? ball & stick vlabelsball & stick ♥+ labels+-a. How many chiral carbons are there in the molecule on the left?chiral carbon(s)b. What is the total number of stereoisomers in the group that includes the molecule on the left?stereoisomer(s)c. How many chiral carbons are there in the molecule on the right?chiral carbon(s)d. What is the total number of stereoisomers in the group that includes the molecule on the right?stereoisomer(s)e. Are the two molecules enantiomers?

Chiral carbon in which the carbon attached to four different groups. This is denoated by the asterisk (*). The number of stereomers in the molecule can be calculated by using the formula 2n where, n = number of chiral centres. 1) The structure of the first two compounds are a) In the left molecule there is one chiral centre is present which is represented as asterisk (*). b) In this molecule 2n number of stereomers are present. Here in this molecule number of chiral carbons are 1 therefore, 21 = 2 . So, this molecule is exist in two stereoisomeric forms. c) In the right molecule there are two (2) chiral centres are present which are shown by asterisk. d) In right molecule two chiral centres are present. So, 22 = 4 i.e. this molecule exist in 4 stereoisomeric forms. e) This molecule are not shows enantiomerism because to show the enantiomerism it have same moleculer formula. So, it has not the same moleculer formula. 2) The structure of the two compounds are a) In the left molecule there is three chiral centre is present which is represented as asterisk (*). b) In this molecule 2n number of stereomers are present. Here in this molecule number of chiral carbons are 3 therefore, 23 = 8 . So, this molecule is exist in eight stereoisomeric forms. c) In the right molecule there are three (3) chiral centres are present which are shown by asterisk. d) In right molecule two chiral centres are present. So, 23 = 8 i.e. this molecule exist in 8 stereoisomeric forms. e) This molecule are shows enantiomerism because it have same moleculer formula and these are non-superimpossable mirror images of each others.

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Chemistry

How to count how many chiral groups and stereoisomers

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter12: Chirality

Section: Chapter Questions

Problem 16E

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Concept explainers

Polymers

Polymers are naturally occurring or synthetically produced large molecules or compounds which are made up of series of repeating units called monomers. They are joined together by chemical bonds. The term polymer is coined from Greek roots meaning 'many parts' and are found almost everywhere from the plastics bags to the rubber of our tires to our DNA strands.

Question

How to count how many chiral groups and stereoisomers

Two nonsuperposable molecules are shown in the windows below:
ball & stick v
labels
ball & stick v
+ labels
+
-
-
a. How many chiral carbons are there in the molecule on the left?
chiral carbon(s)
b. What is the total number of stereoisomers in the group that includes the molecule on the left?
stereoisomer(s)
c. How many chiral carbons are there in the molecule on the right?
chiral carbon(s)
d. What is the total number of stereoisomers in the group that includes the molecule on the right?
stereoisomer(s)
e. Are the two molecules enantiomers?

ball & stick v
labels
ball & stick ♥
+ labels
+
-
a. How many chiral carbons are there in the molecule on the left?
chiral carbon(s)
b. What is the total number of stereoisomers in the group that includes the molecule on the left?
stereoisomer(s)
c. How many chiral carbons are there in the molecule on the right?
chiral carbon(s)
d. What is the total number of stereoisomers in the group that includes the molecule on the right?
stereoisomer(s)
e. Are the two molecules enantiomers?

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