\begin{table}%t14
\caption{\label{t:chem-tab1}Surface reactions and cosmic-ray induced surface photodissociation processes related to the formation of cyanides, and ethyl \mbox{formate}.}
\par
\small%\centerline
 {
\begin{tabular}{lccc}
\hline
\hline
Reaction  & \hspace*{-5ex} Garrod et~al.  & \hspace*{-2.5ex} \textit{Basic} & \hspace*{-2.5ex} \textit{Select}  \\
          & \hspace*{-5ex} (2008)         & \hspace*{-2.5ex} model & \hspace*{-2.5ex} model   \\
\hline
C$_2$N       +  H      $\rightarrow$  HCCN         & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
HCCN         +  H      $\rightarrow$  CH$_2$CN     & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_2$CN     +  H      $\rightarrow$  CH$_3$CN     & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\[2mm]
HC$_3$N      +  H      $\rightarrow$  C$_2$H$_2$CN (1210~K) & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ &    \\
C$_2$H$_2$CN +  H      $\rightarrow$  C$_2$H$_3$CN & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ &    \\
C$_2$H$_3$CN +  H      $\rightarrow$  C$_2$H$_4$CN (750~K)  & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ &    \\
C$_2$H$_4$CN +  H      $\rightarrow$  C$_2$H$_5$CN & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\[2mm]
C$_3$H$_6$CN +  H      $\rightarrow$  C$_3$H$_7$CN &            & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\[2mm]
CH$_2$       +  CN             $\rightarrow$  CH$_2$CN     & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_3$       +  CN             $\rightarrow$  CH$_3$CN     & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_2$       +  CH$_2$CN       $\rightarrow$  C$_2$H$_4$CN &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_3$       +  CH$_2$CN       $\rightarrow$  C$_2$H$_5$CN &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_2$       +   C$_2$H$_4$CN  $\rightarrow$  C$_3$H$_6$CN &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_3$       +   C$_2$H$_4$CN  $\rightarrow$  C$_3$H$_7$CN &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  
\\[2mm]
C$_2$H$_5$       +  CN         $\rightarrow$  C$_2$H$_5$CN &           & \hspace*{-2.5ex} $\bullet$ &    \\
C$_3$H$_7$       +  CN         $\rightarrow$  C$_3$H$_7$CN &           & \hspace*{-2.5ex} $\bullet$ &    \\[2mm]
NH      +  CH$_2$CN   $\rightarrow$  NHCH$_2$CN     &       & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
NH$_2$  +  CH$_2$CN   $\rightarrow$  NH$_2$CH$_2$CN &       & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
H       +  NHCH$_2$CN $\rightarrow$  NH$_2$CH$_2$CN &       & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  
\\[2mm]
CH$_2$NH      +  CN   $\rightarrow$  NHCH$_2$CN     &       & \hspace*{-2.5ex} $\bullet$ &   \\
CH$_2$NH$_2$  +  CN   $\rightarrow$  NH$_2$CH$_2$CN &       & \hspace*{-2.5ex} $\bullet$ &   
\\[2mm]
CH$_3$CN     +  $h \nu$  $\rightarrow$ CH$_2$CN     + H   &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
CH$_3$CN     +  $h \nu$  $\rightarrow$ CH$_3$       + CN  & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  
\\[2mm]
C$_2$H$_5$CN +  $h \nu$  $\rightarrow$ C$_2$H$_4$CN + H   &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
C$_2$H$_5$CN +  $h \nu$  $\rightarrow$ CH$_3$ + CH$_2$CN  &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
C$_2$H$_5$CN +  $h \nu$  $\rightarrow$ C$_2$H$_5$   + CN  & \hspace*{-5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  
\\[2mm]
C$_3$H$_7$CN +  $h \nu$  $\rightarrow$ CH$_3$ + C$_2$H$_4$CN &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
C$_3$H$_7$CN +  $h \nu$  $\rightarrow$ C$_2$H$_5$ + CH$_2$CN &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
C$_3$H$_7$CN +  $h \nu$  $\rightarrow$ C$_3$H$_7$ + CN       &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ 
 \\[2mm]
NH$_2$CH$_2$CN + $h \nu$ $\rightarrow$ NH$_2$ + CH$_2$CN     &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
NH$_2$CH$_2$CN + $h \nu$ $\rightarrow$ NH$_2$CH$_2$ + CN     &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$  \\
\hline
CH$_3$  +  CH$_2$OCHO  $\rightarrow$  C$_2$H$_5$OCHO &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ \\
H       +  CH$_2$OCHO  $\rightarrow$  CH$_3$OCHO &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ \\
HCO     +  C$_2$H$_5$O $\rightarrow$  C$_2$H$_5$OCHO &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$ \\
H       +  C$_2$H$_5$O $\rightarrow$  C$_2$H$_5$OH &           & \hspace*{-2.5ex} $\bullet$ &  \hspace*{-2.5ex}$\bullet$ 
\\[2mm]
CH$_3$OCHO   + $h \nu$ $\rightarrow$  CH$_2$OCHO + H &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$\\
C$_2$H$_5$OH + $h \nu$ $\rightarrow$  C$_2$H$_5$O + H &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$
\\[2mm]
C$_2$H$_5$OCHO + $h \nu$ $\rightarrow$  CH$_2$OCHO + CH$_3$ &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$\\
C$_2$H$_5$OCHO + $h \nu$ $\rightarrow$  C$_2$H$_5$O + HCO &           & \hspace*{-2.5ex} $\bullet$ & \hspace*{-2.5ex} $\bullet$\\
\hline
\end{tabular}}
\medskip
Notes: Reactions that were present in the hot core model of \citet{Garrod08a} are indicated. Activation energies required for reaction are shown in brackets, where applicable.
\end{table}