A chemical expression, reaction, equation, etc. that is set apart within the text
The model for this element will allow a chemical reaction to be expressed as: just text with emphasis tags, a graphic, etc. Alternatively, if the reaction cannot be expressed in a simple fashion, the linking attributes may be used to point to an external source such as a URI.
Conversion Note: Accessibility elements (such as <long-desc>) should not be used with this element if they can be used as part of the containing Chemical Structure Wrapper <chem-struct-wrapper> element. Accessibility elements are allowed within this element only to handle the case in which a single <chem-struct-wrapper> wrapper element contains more than one Chemical Structure (Display) <chem-struct> within it.
Design Note: The decision was made not to add CML or other formal chemical markup languages to this version of the Tag Set. Some equations can be marked up in MathML; others are just ASCII expressions with subscripts, superscripts, and special characters. The list class elements can be used to express the Elsevier DTD <compound-info> element. If CML is added, it will go within this <chem-struct> element.
Display Note: A chemical structure is assumed to be anchored at its position within the text.
<!ELEMENT chem-struct %chem-struct-model; >
Any combination of:
<app> Appendix; <app-group> Appendix Matter; <body> Body of the Article; <boxed-text> Boxed Text; <chem-struct> Chemical Structure (Display); <chem-struct-wrapper> Chemical Structure Wrapper; <disp-formula> Formula, Display; <disp-quote> Quote, Displayed; <fig> Figure; <gloss-group> Glossary Group; <glossary> Glossary Elements List; <named-content> Named Special (Subject) Content; <notes> Notes; <p> Paragraph; <ref-list> Reference List (Bibliographic Reference List); <sec> Section; <supplementary-material> Supplementary Material; <table-wrap> Table Wrapper; <td> Table Data Cell (XHTML table model); <term> Definition List: Term; <th> Table Header Cell (XHTML table model)
No sample is available at this time, as this element is rare in STM journal publishing, being more commonly used in STM books.