The intermediate (A) formed by the reactants has to be identified. The mechanism for the formation of intermediate has to be shown. Concept introduction: Base abstracts an acidic proton to form a negatively charged species. The negative charged species is called nucleophile. The carbon which is attached to the electronegative atom is called the electrophilic carbon. In the S N 2 reaction mechanism, leaving group is displaced by the nucleophile. The increasing order of reactivity of halide is: CH 3 X > RCH 2 X > R 2 CHX
The intermediate (A) formed by the reactants has to be identified. The mechanism for the formation of intermediate has to be shown. Concept introduction: Base abstracts an acidic proton to form a negatively charged species. The negative charged species is called nucleophile. The carbon which is attached to the electronegative atom is called the electrophilic carbon. In the S N 2 reaction mechanism, leaving group is displaced by the nucleophile. The increasing order of reactivity of halide is: CH 3 X > RCH 2 X > R 2 CHX
The intermediate (A) formed by the reactants has to be identified. The mechanism for the formation of intermediate has to be shown.
Concept introduction:
Base abstracts an acidic proton to form a negatively charged species. The negative charged species is called nucleophile. The carbon which is attached to the electronegative atom is called the electrophilic carbon.
In the SN2 reaction mechanism, leaving group is displaced by the nucleophile. The increasing order of reactivity of halide is:
CH3X>RCH2X>R2CHX
(b)
Interpretation Introduction
Interpretation:
The mechanism for the conversion of A to B has to be shown. The compound which formed more rapidly has to be identified.
Concept introduction:
The reaction which takes place between two or more than two atoms which are present in the same molecule are called the intramolecular reactions.
(f) SO:
Best Lewis Structure
3
e group geometry:_
shape/molecular geometry:,
(g) CF2CF2
Best Lewis Structure
polarity:
e group arrangement:_
shape/molecular geometry:
(h) (NH4)2SO4
Best Lewis Structure
polarity:
e group arrangement:
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
Sketch (with angles):
1.
Problem Set 3b
Chem 141
For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing
bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the
molecule is polar or non-polar (iv)
(a) SeF4
Best Lewis Structure
e group arrangement:_
shape/molecular geometry:
polarity:
(b) AsOBr3
Best Lewis Structure
e group arrangement:_
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
(c) SOCI
Best Lewis Structure
2
e group arrangement:
shape/molecular geometry:_
(d) PCls
Best Lewis Structure
polarity:
e group geometry:_
shape/molecular geometry:_
(e) Ba(BrO2):
Best Lewis Structure
polarity:
e group arrangement:
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
Sketch (with angles):
Chapter 15 Solutions
Organic Chemistry; Organic Chemistry Study Guide A Format: Kit/package/shrinkwrap