Chemical Structure (Display)
Chemical expression, reaction, equation, etc. that is set apart within the text.
This element accommodates chemical reactions expressed in many ways: as text with emphasis tags, subscripts, and superscripts; as a preformatted area (<preformat>); as an included graphic, etc. The linking attributes may also be used to point to an external source such as a URI.
Display/Formatting Note: A chemical structure is assumed to be anchored at its position within the text.
Historical Note: This element (<chem-struct>) was significantly remodeled from previous versions of this Tag Set. The current NISO JATS values are backward compatible with the last NLM version, but not with earlier versions. Specifically, in prior versions the <chem-struct> element was allowed inside the <app>, <app-group>, <body>, <boxed-text>, <disp-quote>, <fig>, <glossary>, <notes>, <ref-list>, <sec>, <supplementary-material>, and <table-wrap> elements; in those places, it has been replaced by the <chem-struct-wrap> element.
Only <license-p>, <named-content>, <p>, and <styled-content> elements can contain either <chem-struct> or <chem-struct-wrap>.
Elsevier Conversion Note: For users of Elsevier Tag Sets, the list class elements can be used to express the <compound-info> element inside a chemical structure.
<!ELEMENT chem-struct %chem-struct-model; >
Expanded Content Model
(#PCDATA | alt-text | long-desc | email | ext-link | uri | break | bold | fixed-case | italic | monospace | overline | roman | sans-serif | sc | strike | underline | ruby | label | def-list | list | tex-math | mml:math | named-content | styled-content | alternatives | array | code | graphic | media | preformat | fn | target | xref | sub | sup)*
Any combination of:
- Text, numbers, or special characters
- Accessibility Elements
- Linking Elements
- <break> Line Break
- Emphasis Elements
- <label> Label (of an Equation, Figure, Reference, etc.)
- Math Elements
- <named-content> Named Special (Subject) Content
- <styled-content> Styled Special (Subject) Content
- <alternatives> Alternatives For Processing
- <array> Array (Simple Tabulation)
- <code> Code
- <graphic> Graphic
- <media> Media Object
- <preformat> Preformatted Text
- Internal Linking Elements
- Baseline Change Elements
This element may be contained in:
<addr-line>, <alternatives>, <alt-title>, <article-title>, <attrib>, <award-id>, <bold>, <chapter-title>, <chem-struct-wrap>, <collab>, <comment>, <compound-kwd-part>, <compound-subject-part>, <conf-theme>, <def-head>, <disp-formula>, <element-citation>, <fixed-case>, <funding-source>, <inline-formula>, <italic>, <label>, <license-p>, <meta-value>, <mixed-citation>, <monospace>, <named-content>, <overline>, <p>, <part-title>, <product>, <roman>, <sans-serif>, <sc>, <see>, <see-also>, <source>, <strike>, <styled-content>, <sub>, <subject>, <subtitle>, <sup>, <supplement>, <support-source>, <td>, <term>, <term-head>, <th>, <title>, <trans-source>, <trans-subtitle>, <trans-title>, <underline>, <verse-line>
... <chem-struct-wrap> <caption> <p>Chemical equation for the oxidation of glucose into cardon dioxide and water. Unlike combustion, metabolic pathways involving glycolysis and respiration control the release of energy during oxidation, thereby permitting its storage in ATP molecules. This slow release of energy via chain reactions with multiple steps can be grouped into four stages.</p> </caption> <alternatives> <graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="pq0209587032" specific-use="internet"/> <chem-struct>C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> + 6 O<sub>2</sub> ⟶ 6 CO<sub>2</sub> + 6 H<sub>2</sub>O </chem-struct> </alternatives> </chem-struct-wrap> ...