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Which structure diagram completes the table of physical structures of the main functional groups?

[tex]\[
\begin{tabular}{|c|c|c|c|c|c|}
\hline
Alcohol & Ether & Ketone & Aldehyde & Carboxylic Acid & Ester \\
\hline
\begin{tabular}{l}\ \textless \ smiles\ \textgreater \ [R]O\ \textless \ /smiles\ \textgreater \ \end{tabular}
& \begin{tabular}{l}$R - O - R'$\end{tabular}
&
& \begin{tabular}{l}\ \textless \ smiles\ \textgreater \ [R]C=O\ \textless \ /smiles\ \textgreater \ \end{tabular}
& \begin{tabular}{l}\ \textless \ smiles\ \textgreater \ [R]C(=O)OH\ \textless \ /smiles\ \textgreater \ \end{tabular}
& \begin{tabular}{l}\ \textless \ smiles\ \textgreater \ [R]OC([R])=O\ \textless \ /smiles\ \textgreater \ \end{tabular} \\
\hline
\end{tabular}
\][/tex]

Sagot :

GinnyAnswer
To determine the missing SMILES notations for the "Ether" and "Ketone" functional groups in the given table, follow the established notations for their structure diagrams.

1. Ether: Ethers have the general structure [tex]\( R-O-R' \)[/tex]. In SMILES notation, this translates to:
[tex]\[ \text{\texttt{[R]O[R]}} \][/tex]

2. Ketone: Ketones have the general structure [tex]\( R-\text{CO}-R' \)[/tex]. In SMILES notation, this translates to:
[tex]\[ \text{\texttt{[R]C(=O)[R]}} \][/tex]

Now, incorporating these notations into the table, we fill the "Ether" and "Ketone" columns appropriately:

[tex]\[ \begin{array}{|c|c|c|c|c|c|} \hline \text{Alcohol} & \text{Ether} & \text{Ketone} & \text{Aldehyde} & \text{Carboxylic Acid} & \text{Ester} \\ \hline \text{\texttt{[R]O}} & \text{\texttt{[R]O[R]}} & \text{\texttt{[R]C(=O)[R]}} & \text{\texttt{[R]C=O}} & \text{\texttt{[R]C(=O)O}} & \text{\texttt{[R]OC([R])=O}} \\ \hline \end{array} \][/tex]

Each SMILES notation now correctly matches its respective functional group.
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