CML element torsion

Type Heirarchy
{http://www.w3.org/2001/XMLSchema}float (by restriction) {http://www.xml-cml.org/schema/cml2/core}torsionAngleType (by extension) {http://www.xml-cml.org/schema/cml2/core}torsion

Abstract	false (This can be used in an instance)
Nillable	false (Instance values cannot use xsi:nil)
Target Namespace	http://www.xml-cml.org/schema/cml2/core
Declared Namespaces	xmlns:val=http://www.w3.org/1999/XSL/TransformX xmlns:stm=http://www.xml-cml.org/schema/stmml xmlns:xsd=http://www.w3.org/2001/XMLSchema xmlns:xlink=http://www.w3.org/1999/xlink xmlns:cml=http://www.xml-cml.org/schema/cml2/core xmlns=http://www.xml-cml.org/schema/cml2/core

<xsd:element name="torsion" id="el.torsion">
    <xsd:annotation>
        <xsd:documentation>
            <div class="summary">A torsion angle ("dihedral") between 4 distinct atoms.</div>
            <div class="description">
                <p>
The atoms need not
be formally bonded. It can be used for:
                </p>
                <ul>
                    <li>
Recording experimentally determined torsion angles (e.g. in
a crystallographic paper).
                    </li>
                    <li>
Providing the torsion component for internal coordinates (e.g.
z-matrix).
                    </li>
                </ul>
                <p>Note that the order of atoms is important.</p>
            </div>
            <div class="example">
                <pre>
<molecule id="m1">
<atomArray atomID="a1 a2 a3 a4"/>
<torsion atomRefs4="a4 a2 a3 a1" units="degrees">123</torsion>
</molecule>
                </pre>
            </div>
        </xsd:documentation>
    </xsd:annotation>
    <xsd:complexType>
        <xsd:simpleContent>
            <xsd:extension base="torsionAngleType">
                <xsd:attributeGroup ref="tit_id_conv_dictGroup"/>
                <xsd:attributeGroup ref="atomRefs4"/>
                <xsd:attributeGroup ref="units"/>
                <xsd:attributeGroup ref="errorValue"/>
                <xsd:attributeGroup ref="errorBasis"/>
                <xsd:attributeGroup ref="min"/>
                <xsd:attributeGroup ref="max"/>
                <xsd:attributeGroup ref="ref">

                </xsd:attributeGroup>
            </xsd:extension>
        </xsd:simpleContent>
    </xsd:complexType>
</xsd:element>

element {http://www.xml-cml.org/schema/cml2/core}torsion

Source

Documentation