Chem3D Users Manual - CambridgeSoft

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Administrator 198•MOPAC Computations CambridgeSoft Computing Properties
Chapter 11: Computations Gaussian Overview The following procedures describe the graphical user interface (GUI) Chem3D provides for users of Gaussian 03W. For information about how to use Gaussian, see the documentation supplied by Gaussian, Inc., makers of the application. Gaussian 03W is not included with Chem3D, but can be purchased separately from CambridgeSoft. You can use the Online menu command Browse ChemStore.com to link directly to the website. Gaussian 03 Gaussian 03W is a powerful computational chemistry application including both ab initio and semiempirical methods. Gaussian is a command-line application that requires a user to type text-based commands and data instead of selecting graphical objects and menu items. Chem3D serves as a front-end GUI for Gaussian 03W, enabling you to create and run Gaussian jobs in Chem3D. The model in the Chem3D window transparently provides the data for Gaussian computations. Menus and dialog boxes replace the many Gaussian commands, although Chem3D preserves the option to use them for less common and advanced computations. Minimize Energy To perform a minimize energy computation on a molecule: From the Calculations menu, point to Gaussian and choose Minimize Energy. Gaussian The Minimize Energy dialog box appears. The Job Type Tab The Job Type tab of the dialog box defaults to Minimize Energy when you select Minimize Energy from the menu. Job Type can be changed to Compute Properties from within this tab. Select the appropriate options: If you want to … watch the minimization process “live” at each iteration in the calculation Then select … Display Every Iteration NOTE: Displaying or recording each iteration adds significantly to the time required to minimize the structure. ChemOffice 2005/Chem3D Gaussian Computations • 199 Gaussian 03
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ChemOffice.Com ® ChemOffice ® Che
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License Information ChemOffice, Che
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· Licensed users of ChemOffice Ent
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computer, except as provided below.
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Q: IS IT OK TO COPY MY COLLEAGUE’
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A Guide to CambridgeSoft Manuals An
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Administrator Setting Molecular Sur
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Administrator Methods Available in
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Administrator Defining Atom Types.
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Administrator • CambridgeSoft
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Administrator provides a balance be
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Administrator the activation each t
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Administrator The following table d
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Administrator • Stereo Pairs—A
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Administrator • Bond Angles—Dis
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Administrator The Building Toolbar
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Administrator The Calculation Toolb
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Administrator 1. Right-click in the
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Administrator • In the Model Sett
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Administrator modes and color setti
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Administrator 30 •Chem3D Basics C
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Administrator 2. Click the ChemDraw
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3. Move the pointer over the C-C bo
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Administrator Add serial numbers an
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Administrator 5. Press the Enter ke
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. Administrator b. From the Structu
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Administrator In the Measurements t
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A molecule of Epinephrine appears.
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Administrator Tutorial 7: Docking M
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Administrator To save the iteration
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The allyl radical, CH 2 =CHCH 2·,
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Administrator Determine the raw spi
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Administrator atoms are relatively
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To change the structural display ty
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Administrator When sizing by partia
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Administrator Depth Fading3D enhanc
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• Select Parallel to rotate the r
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Administrator • From the Computat
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Administrator Surface Type Solid De
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Administrator 2. Adjust the slider
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Administrator Density surface is ca
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Administrator 72 •Displaying Mode
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Administrator The following table d
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Administrator When Correct Atom Typ
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Administrator To use the same text
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Administrator Example 2. Building a
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Administrator copied into blank tab
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Administrator 3. Type the atom type
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Administrator Clean Up Structure or
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Setting Serial Numbers this step, y
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Administrator Refining a Model Afte
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Administrator Selecting Multiple At
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Administrator New in Chem3D version
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Administrator Dragging moves atoms
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Administrator 3. Hold down the Shif
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To position a plane in your model p
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Administrator • Second Positioned
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Administrator For example, consider
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Administrator If you want to displa
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Administrator Example: To examine t
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Administrator Chem3D provides two o
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Administrator change a property. By
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Administrator To add to a group: 1.
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To stop spinning: • On the Movie
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Administrator If you want to … Th
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Administrator EPS The PostScript fi
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If you want the file to … Then cl
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Molecular Design Limited MolFile (.
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Administrator 7. Leave the last lin
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Administrator 128•Printing and Ex
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Administrator • Semiempirical Ext
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Method Type Advantages Disadvantage
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Administrator • A single point ca
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Administrator • Molecular mechani
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Administrator constant), while θ 0
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Administrator The van der Waals int
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Administrator 6. The modified value
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the same wave function and a consta
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Administrator A variety of other ba
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5 6 1.11606 3 109.41 5 109.41 -1 21
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Administrator 41 4 1 0 0 0 0 0 0 0
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Administrator 32 3 12 1 0 0 0 33 3
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Administrator 13 * 3D displacement
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Administrator The field value for C
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Administrator Line 4e: C 1.53597 1
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Administrator CONECT 4 2 9 10 11 CO
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Administrator COMPND ATOM HETATM CO
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Administrator Line 56 -2794 21139 6
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Administrator 7 2 10 1 8 3 6 1 9 3
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Administrator Line 16 6 C -0.559 1.
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Administrator 12. Line 30, “@BOND
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Parameter Table Use Parameter Table
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Administrator 3. Type the informati
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Administrator Geometry The geometry
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Administrator KS The KS, or bond st
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Administrator one attached hydrogen
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Administrator bond length between t
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Administrator R* The R* field is th
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Administrator The V1 torsional cons
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Administrator VDW Interactions The
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Administrator Editing Parameters Yo
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Administrator 6. The pi molecular o
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Administrator Adding Parameters to
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Administrator fragments 84 paramete
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Administrator CC1 see Cartesian coo
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Administrator Copy As Bitmap comman
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Administrator Examining angles, tut
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Administrator density 67 editing 67
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Administrator editing 107 non-bonde
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Administrator repeating jobs 178 RH
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Administrator Rectification, when d
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Administrator all atoms 95 atoms or
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Administrator Translucent surface t
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Desktop Software Enterprise Solutio
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SOLUTIONS Enterprise Solutions APPL
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Desktop to Enterprise Solutions Che
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SOFTWARE E-Notebook Ultra Ultimate
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SOFTWARE ChemDraw Ultra Ultimate Dr
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SOFTWARE Chem3D Ultra Ultimate Mode
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SOFTWARE ChemFinder/Word • Search
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SOFTWARE The Merck Index • Encycl
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SOLUTIONS •Development and deploy
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SOLUTIONS •Adds chemical data typ
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MANAGEMENT •Custom organization o
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MANAGEMENT • Indexes chemical str
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MANAGEMENT • E-Notebook Enterpris
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DISCOVERY • Accessed through your
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DISCOVERY • Integrated with Regis
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DISCOVERY • Reagent lists can be
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DISCOVERY •Effectively manages da
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DISCOVERY • Catalog driven data m
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DATABASES • Fully structure-searc
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DATABASES • Encyclopedic referenc
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DATABASES • Extensive collection
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SERVICES · Business Case Developme
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CS ChemOffice ® Desktop to Enterpr
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