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Homework Help: Bond angle.

  1. Jun 19, 2010 #1
    1. The problem statement, all variables and given/known data
    What is the carbon-silver-carbon angle in the complex ion [Ag(CN)2]-??

    2. Relevant equations

    3. The attempt at a solution
    The answer is 180 degrees why? I thought that complex ion is a ionic compound? If so, how would the shape be like? Thanks.
  2. jcsd
  3. Jun 19, 2010 #2
    please have a look at 'cyanide' and 'p orbital' for details..on wiki
    hopefully you will valuable information.
  4. Jun 19, 2010 #3
    "the dicyanides [M(CN)2]− (M = Cu, Ag, Au), which are linear in geometry." from wiki
    But why? M is the ligand and both CN- are bonded with M. So the ionic bond in between them is at 180 degrees?
  5. Jun 19, 2010 #4
    The bond between the CN- ions and the Ag+ ion is not ionic, but covalent. The complex ion [Ag(CN)2]- is a coordination complex.
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