Concept explainers
The dimethyldithiocarbamate ion,
a. Give the important resonance structures of this ion, including any formal charges wherenecessary. Select the resonance structure likely to provide the best description of this ion.
b. Repeat for the dimethylthiocarbamate ion,
(a)
Interpretation: The most important resonance structures of
Concept introduction: Formula to calculate the formal charge of the atom is as follows:
More important resonance structure selected as follows:
1. Always prefer smaller formal charges over the larger formal charge.
2. Always prefer the different formal charges on adjacent atoms instead of the same nonzero formal charge.
3. A more negative formal charge must be located on the most electronegative atom.
Explanation of Solution
Nitrogen has five valence electrons,carbon has four valence electrons and sulfur has six valence electrons. The resonance structure of
Since structure I and II have complete octet with least negative charge that resonates on sulfur, hence, most important structures are structure I and II.
(b)
Interpretation: The most important resonance structures of
Concept introduction: Formula to calculate the formal charge of the atom is as follows:
More important resonance structure selected as follows:
1. Always prefer smaller formal charges over the larger formal charge.
2. Always prefer the different formal charges on adjacent atoms instead of the same non-zero formal charge.
3. A more negative formal charge must be located on the most electronegative atom.
Explanation of Solution
Nitrogen has five valence electrons,carbon has four valence electrons and sulfur has six valence electrons. The resonance structure of
Since structure I has complete octet with least negative charge which exists on more electronegative atom that is oxygen,hence, most important structures is structure I.
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