Chem3D 8.0 Manual - CambridgeSoft

then the unselected rectification atoms that areadjacent to selected atoms move with theselected atoms.To move a model or a fragment:1. With the Select Tool, select the model orfragment.2. Drag the model to the new location.Rotating ModelsChem3D allows you to freely rotate the modelaround axes. Four rotation bars are located on theperiphery of the model window. You can use theserotation bars to view your model from differentangles, by rotating around different axes. You canalso double-click a Rotation bar to open the Rotatedialog box where you can type the number ofdegrees to rotate.If you want to save the rotation frames to later replayas a movie, click the Record button in the MovieController.To display the Rotation bars:• From the Tools menu, choose Show RotationBars.The Rotation bars appear on the corners of theModel window.Internal Rotation BarY-Axis Rotation BarSelected AxisRotation BarX-Axis Rotation BarX- or Y-Axis RotationsTo perform a rotation about the X- or Y-axis:1. Point to the X-axis Rotation bar or Y-axisRotation bar.2. Drag the pointer along the Rotation bar.Rotating FragmentsIf more than one model (fragment) is in the modelwindow, you can rotate a single fragment or rotateall fragments in the model window.To rotate only one fragment:1. Select an atom in the fragment you want torotate.2. Drag a rotation bar.To rotate all fragments:• Shift-drag a Rotation bar.Internal RotationsInternal rotations alter a dihedral angle and createanother conformer of your model. You can rotate aninternal angle using the Internal Rotation bar.To perform internal rotations in a model, you mustselect either one atom, one bond, or a fragment thatcontains exactly one atom that is attached to oneunselected atom.The internal rotation is specified by a bond. Thefragment at one end of the bond is stationary whilethe fragment attached to the other end rotates. If onlyone atom is selected, then the stationary fragment isdefined by whichever atom bonded to the selectedatom has the lowest serial number. If a fragment isselected, then that fragment rotates and theunselected atoms remain stationary.For example, consider ethoxybenzene (phenetole)as follows:Chem3D 8 Chapter 5: Manipulating Models • 65Rotating Models