Download - CambridgeSoft

You can display several measurements sequentially
in the table. The following table shows the bond
lengths and angles for Ethene.
bond
lengths
bond
angles
{
{
Editing Measurements
If you select a measurement in the Measurements
table, the corresponding atoms are selected in the
model window. If you select atoms in your model,
any corresponding measurements are selected.
To change the value of a measurement:
When the Measurements table is not visible, the
standard measurements are taken from the
parameter tables.
To specify optimal values for particular
measurements, edit the value in the Optimal
column.
Chem3D also uses the optimal values with the
Dock command. When you choose Dock from the
Structure menu, Chem3D reconciles the actual
distance between atoms in two fragments to their
optimal distances by rigidly moving one fragment
relative to the other.
Non-Bonded Distances in
Tables
To display non-bonded atom measurements:
1. Select the atoms.
2. From the Structure menu, point to
Measurements and choose Set Distance
Measurement.
The measurement between the selected atoms
is added to the table.
1. Select the text in the Actual column.
2. Type a new measurement value in the selected
cell.
3. Press the Enter key
The model reflects the new measurement.
When atoms are deleted, any measurements that
refer to them are removed from the Measurements
table.
Optimal Measurements
Optimal values are used instead of the
corresponding standard measurements when a
measurement is required in an operation such as
Clean Up Structure. Optimal measurements are
only used when the Measurements table is visible.
ChemOffice 2005/Chem3D
non-bonded distance
Showing the Deviation from Plane
The Deviation from Plane command allows you to
compute the RMS Deviation from the least squares
plane fitted to the selected atoms in the model.
Inspecting Models
Measurement Table
• 107