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Administrator<br />

copied into blank tables in Chem3D to create<br />

models. Text tables can use spaces or tabs between<br />

columns.<br />

For a Cartesian table, there must be four columns<br />

(not including the Serial Number column) or five<br />

columns (if the Serial Number column is included.)<br />

The relative order of the the X-Y-Z columns must<br />

be preserved; otherwise column order is not<br />

important.<br />

For a Z-Matrix table, there must be seven columns<br />

(not including Serial Number column) or eight<br />

columns (if the Serial Number column is included.)<br />

The column order must NOT be changed.<br />

To copy a Cartesian or Z-Matrix table into<br />

Chem3D:<br />

1. Select the table in the text or Excel file.<br />

2. Use Ctrl+C to transfer to the clipboard.<br />

3. Right-click in a blank table in Chem3D and<br />

select Paste.<br />

Examples<br />

Example 1: chloroethane Cartesian table<br />

(space character as separator)<br />

C 0 -0.464725 0.336544 0.003670<br />

C 0 0.458798 -0.874491 0.003670<br />

Cl 0 0.504272 1.818951 0.003670<br />

H 0 -1.116930 0.311844 0.927304<br />

H 0 -1.122113 0.311648 -0.927304<br />

H 0 -0.146866 -1.818951 0.003670<br />

H 0 1.116883 -0.859095 0.923326<br />

H 0 1.122113 -0.858973 -0.923295<br />

-------------------------<br />

Example 2: ethane Cartesian table (tab as separator)<br />

C -0.49560.57820.0037<br />

C 0.4956-0.57820.0037<br />

H 0.05521.55570.0037<br />

H -1.15170.52520.9233<br />

H -1.15690.5248-0.9233<br />

H -0.0552-1.55570.0037<br />

H 1.1517-0.52520.9233<br />

H 1.1569-0.5248-0.9233<br />

-----------------------<br />

Example 3: ethenol Z-Matrix table (tab as<br />

separator)<br />

C<br />

C 1 1.33<br />

O 2 1.321 119.73<br />

H 3 0.9782 1091 180<br />

H 2 0.991 1193 180<br />

H 1 0.9892 119.53 180<br />

H 1 0.9882 1193 0<br />

Changing an Atom to<br />

Another Element<br />

To change an atom from one element to another:<br />

1. Click the Text tool.<br />

2. Click the atom to change.<br />

A text box appears.<br />

3. Type the symbol for the element you want<br />

(case-sensitive).<br />

4. Press the Enter key.<br />

As long as the Text tool is selected, you can doubleclick<br />

other atoms to make the same change.<br />

60 •Building and Editing Models <strong>CambridgeSoft</strong><br />

Changing an Atom to Another Element

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