Mac/PC Instructions: Practice commands on the ethane model below.

Place the cursor over the structure of ethane.

Rotate: click mouse, move mouse.

Zoom: depress SHIFT, click mouse, move mouse.

Translate: depress SHIFT. double click, move mouse. [PC: depress CNTRL key and then click and hold right button of mouse to translate structure.]

Measurements:

• Bond Length: Place the cursor over an atom (hydrogen in ethane). Double click. A plus sign appears. Place the cursor over the attached carbon. The bond length appears in magenta nanometers. Double click. The bond length appears permanently in white.
• Bond Angle: Place the cursor over an atom (hydrogen in ethane). Double click. A plus sign appears. Place the cursor over the attached carbon. The bond length appears in magenta nanometers (1 Angstrom = 0.1 nm; Angstroms can be set in Menu/Measurements). Single click. Move the cursor to either the carbon or the attached hydrogen. The bond angles appear in magenta. Double click to display the bond angle permanently in white.
• Dihedral Angle: Follow bond angle instructions for four atoms (H-C-C-H).

Menu: Place cursor over Jmol logo, click once, OR place cursor over the field, depress CTRL then click mouse. [The Menu has more functions than are needed. The useful functions are in red.

Menu (Jmol 13.0.9) Filename Select View Style Scheme CPK Spacefill Ball and Stick Sticks Wireframe Color Surfaces Dot Surface van der Waal's Surface Solvent Surface Molecular Surface Make Opaque Make Translucent Off Zoom Spin On/Off Set X Rate Set Y Rate Set Z Rate Measurements Nanometers Angstroms Set Picking Consoles Show Language About Jmol

Ethane (larger view)