Structure & Metadata Search:
drawing structures and reactions
How to use the drawing tools
From the homepage of e-EROS, click on the "search in this title" link.
From here you will see the option of either plugging in keywords for a text only search or to use the Structure and Metadata Search format. Note that to use this searching format, you must search by one of the three following terms for the first box: by Substructure, by Structure (exact) or by Reaction (Substructure). For this example, we will search for a reaction for when Iodine is added to cyclohexene.
A second window pops-up in order to draw the structure or reaction. There are a number of tools to use in drawing the structure or reaction.
The most common element letters are found on the left hand side of the window: C, N, O, S, F, Cl, Br, P, A, and Q. The letter X brings up the Periodic Table to select a different atom. The letter L is the "Select Atomlist" table. In this table you can modify the elements by changing the Hydrogen Count, or clicking on "not-list" you can choose elements that you do not want associated with the specific structure being drawn. (in example, different variations of Iodine have the similar structures. To make sure certain Iodine compounds do not appear, use the "not-list" option.)
OPENS TO
OPENS TO 
The different drawing tools are available to create the structure. (Note: When creating a reaction (substructure), remember you must include AT LEAST one reactant, one reaction arrow and one product, in the drawing.)
Once the structure is completed, click on the transfer button to bring the image into your search.
In the next section you will learn how to combine search terms through: Structure & Metadata Search part two
