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Homework Help: What does (en) mean in a chemical formula/ligands

  1. Jun 27, 2009 #1
    1. The problem statement, all variables and given/known data
    What is the coordination number of [Pt(en)3](ClO4)4

    2. Relevant equations

    3. The attempt at a solution

    I know the method to solve this one, I just have no idea what (en) is and if it is bidentate or polydentate (I've already tried monodentate and it was incorrect). Even the name of (en) would be fantastic!
    Thanks :)
  2. jcsd
  3. Jun 28, 2009 #2


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    Staff: Mentor

    Most likely ethylenediamine.
  4. Jun 28, 2009 #3
    Thanks so much :)
  5. Jun 29, 2009 #4


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    Science Advisor
    Homework Helper
    Gold Member

    Yep. en = ethylenediamine. bidentate. Perchlorate is one of the non-coordinating anions. It is just there to balance the charge on the platinum.
  6. Jun 29, 2009 #5
    Thank you :)
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