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Each molecule has a set of symmetry operations that describes the molecule's overall symmetry. This set of operations define the point group of the molecule. The process used to assign a molecule to a point group is straightforward with a few exceptions and follows three major steps:
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Symmetry & Point Groups. 1. Determine the symmetry elements and assign the point group of (a) NH 2 Cl, (b) CO 32–, (c) SiF 4, (d) HCN, (e) SiFClBrI, (f) BF 4–. Use VSEPR to find the structure and then assign the point group and identify the symmetry elements. (a) NH 2 Cl.
Jun 11, 2021 · Be able to visualize the 3-dimensional structure of a molecule and classify its point symmetry group. Be able to predict properties dependent upon symmetry such as dipole moment, presence of enantiomers (chirality) and numbers of chemically equivalent groups.
The molecules are organized by point group, so you can select examples to demonstrate particular symmetry elements. Includes links to the chemical literature when available.
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Sep 28, 2022 · A symmetry operation is an action that leaves an object looking the same after it has been carried out. For example, if we take a molecule of water and rotate it by 180° about an axis passing through the central O atom (between the two H atoms) it will look the same as before.
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What is symmetry in chemistry?
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What is a symmetry element?
symmetry element is an imaginary geometrical construct. about which a symmetry operation is performed. symmetry operation is a movement of an object about a symmetry element such that the object's orientation and position before and after the operation are indistinguishable.
