Chem3D Users Manual - CambridgeSoft

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Administrator 72 •Displaying Models CambridgeSoft Visualizing Surfaces from Other Sources
Chapter 4: Building and Editing Models Overview Chem3D enables you to build or change a model by three principal methods: • Using the ChemDraw panel, which utilizes ChemDraw to build and insert or copy and edit models. • Using Bond tools, which build using carbon exclusively. • Using the Build from Text tool (hereafter referred to as the Text tool), which allows you to build or edit models using atom labels and substructures. Usually, a combination of methods yields the best results. For example, you might build a carbon skeleton of a model with ChemDraw or the bond tools, and then change some of the carbons into other elements with the Text tool. Or you can build a model exclusively using the Text tool. In addition, you can use Structure tools to change bond lengths and angles, or to change stereochemistry. Setting the Model Building Controls You control how you build by changing options in the Building control panel in the Model Settings dialog box. The default mode is all options selected. You can choose to build in a faster mode, with less built-in “chemical intelligence”, by turning off one or more of the options. Intelligent mode yields a chemically reasonable 3D model as you build. Fast mode provides a quick way to generate a backbone structure. You can then turn it into a chemically reasonable 3D model by using the Structure menu Rectify and Clean Up tools. To change the Building mode: 1. From the File menu, choose Model Settings. The Model Settings dialog box appears. 2. Select the Model Building tab. 3. Select or deselect the appropriate radio buttons. ChemOffice 2005/Chem3D Building and Editing Models • 73 Setting the Model Building Controls
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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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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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Administrator Molecular wave functi
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Administrator activation barriers.
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3. From the Calculations menu, poin
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minimizing a second model, the mini
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Administrator move to lower the ene
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. Administrator Molecular Dynamics
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Administrator If you want to … Th
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Administrator The Compute Propertie
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Administrator To run a previously c
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Administrator The procedures assume
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Administrator improvements in each
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Administrator • Overall errors in
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Administrator The following table c
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Administrator TRIPLET QUARTET QUINT
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Administrator Chemical symbol ++ ba
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Administrator 4. Click Run. A new m
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Administrator Minimizing Energy Min
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Administrator criteria, to optimize
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Administrator 6. Hold down the S ke
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Administrator Dipole Moment The dip
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Administrator Molecular Surfaces Mo
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The following table contains the ke
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Administrator 3. Click in the model
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Keyword Description 7. On the Prope
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Administrator Hyperfine Coupling Co
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Administrator 198•MOPAC Computati
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Administrator If you want to … re
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Administrator In the Results In tex
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Administrator Repeating a Gaussian
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Property Description Property Descr
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Property Description Error Message
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Administrator Property Electronic E
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Administrator To specify the calcul
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Administrator 3. Click Open. The ap
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Administrator • Server—limits t
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Administrator To perform property c
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The Step 4 of 4 dialog box appears.
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Administrator • From the ChemOffi
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Administrator Accessing the Online
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Administrator To find a structure t
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Administrator 228• Accessing the
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Administrator Performance Below are
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Administrator Defining Substructure
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Administrator If an atom can be ass
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Key Drag Shift+Drag Administrator Q
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Administrator 238• Keyboard Modif
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Administrator Example 3 In Example
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Administrator 14 13 H 2.197 -0.8229
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Administrator Connection tables by
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Administrator FORTRAN Formats The F
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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 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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Chem3D Users Manual - CambridgeSoft

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