chemfig
Horizontal reactions
5 Arrow types¶
If the token > is immediately followed by text between curly braces, this optional text specifies the arrow type. Its default value is the value of the key arrow head, which contains ⟨-CF⟩ by default.
The complete syntax of the > token is therefore:
>{⟨arrow type⟩}[⟨top label⟩][⟨bottom label⟩]
By using this optional parameter between curly brackets, you can access these other types of arrows, already described in the section “Reaction diagrams” (section 2) : “->”, “<-”, “<->”, “<=>”, "<< ->,“ and ”<->>."
The 6 types of arrows
\hreac A > B \endhreac\par% identique à >{->}
\hreac A >{<-} B \endhreac\par
\hreac A >{<->} B \endhreac\par
\hreac A >{<=>} B \endhreac\par
\hreac A >{<<->} B \endhreac\par
\hreac A >{<->>} B \endhreac