Question

Part V Build the structure CHBrs in ChemDraw and transfer to Chem3DUltra. Don't forget the lone "Generate All Bond Angles" pairs on the bromine atoms. Under "Structure", then "Measurements", select Question 1. These bond angles should be pretty much the same. What is the value of the bond angles? Chem3D has the ability to adjust the structure to take into account the types of atoms that are bonding and the amount of space that they take up. There is a button for energy minimization labeled "MM2 Minimize". MM2 Don't confuse this button with another one labeled "MM2 Dynamics" with a green play button beneath. After running the energy minimization, go to "Structure", "Measurements", and "Generate All Bond Angles". 2. What happened to the bond angles? 3. Why the difference before and after energy minimization?

Answer 1

Structure of CHBrs in ChemDraw: Br Br: : Br or Br Br: tribromomethane tribromomethane Chem3DUltra 0133 0309 00.4 109.5 Bong angles: Approximate 109.5 degree Chem3DUltra 'MM2 Minimize' Job: 1 10.4 108.5° cs Scanned with CamScanner

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