identify final structure

\begin{tabular}{|l|l|l|} \hline Frequency & Bond responsible & Structure \\ \hline & & \\ \hline & & \\ \cline { 1 - 2 } & & \\ \hline \end{tabular} \begin{tabular}{|l|l|l|} \hline Frequency & Bond responsible & Structure \\ \hline & & \\ \hline & & \\ \cline { 1 - 2 } & & \\ \hline \end{tabular}