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  2. Dihedral angle - Wikipedia

    en.wikipedia.org/wiki/Dihedral_angle

    In stereochemistry, a torsion angle is defined as a particular example of a dihedral angle, describing the geometric relation of two parts of a molecule joined by a chemical bond. [ 4 ] [ 5 ] Every set of three non-colinear atoms of a molecule defines a half-plane.

  3. Table of polyhedron dihedral angles - Wikipedia

    en.wikipedia.org/wiki/Table_of_polyhedron...

    The dihedral angles for the edge-transitive polyhedra are: Picture Name Schläfli symbol Vertex/Face configuration exact dihedral angle (radians) dihedral angle

  4. Dihedral (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Dihedral_(aeronautics)

    Dihedral angle has a strong influence on dihedral effect, which is named after it. Dihedral effect is the amount of roll moment produced in proportion to the amount of sideslip . Dihedral effect is a critical factor in the stability of an aircraft about the roll axis (the spiral mode ).

  5. Molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Molecular_geometry

    A bond angle is the geometric angle between two adjacent bonds. Some common shapes of simple molecules include: Linear: In a linear model, atoms are connected in a straight line. The bond angles are set at 180°. For example, carbon dioxide and nitric oxide have a linear molecular shape.

  6. Dihedral - Wikipedia

    en.wikipedia.org/wiki/Dihedral

    Dihedral or polyhedral may refer to: Dihedral angle , the angle between two mathematical planes Dihedral (aeronautics) , the upward angle of a fixed-wing aircraft's wings where they meet at the fuselage, dihedral effect of an aircraft, longitudinal dihedral angle of a fixed-wing aircraft

  7. Gauche effect - Wikipedia

    en.wikipedia.org/wiki/Gauche_effect

    The F–C–C–F dihedral angle is 68°, whereas the I–C–C–I dihedral angle is 180°. [1] In the study of conformational isomerism, the gauche effect is an atypical situation where a gauche conformation (groups separated by a torsion angle of approximately 60°) is more stable than the anti conformation (180°). [2]

  8. Anti-periplanar - Wikipedia

    en.wikipedia.org/wiki/Anti-periplanar

    Figure 3: Representation of a strictly anti-coplanar conformation. A, B, C, and D are in the same plane and the dihedral angle between A–B and C–D is 180°. Figure 4: Newman projection showing A and D anti-periplanar. Figure 5: Sawhorse projection of 2-chloro-2,3-dimethylbutane showing Cl and H anti-periplanar.

  9. Ideal polyhedron - Wikipedia

    en.wikipedia.org/wiki/Ideal_polyhedron

    This fact can be used to calculate the dihedral angles themselves for a regular or edge-symmetric ideal polyhedron (in which all these angles are equal), by counting how many edges meet at each vertex: an ideal regular tetrahedron, cube or dodecahedron, with three edges per vertex, has dihedral angles = / = (), an ideal regular octahedron or ...