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  1. #1
      Eiman
    Jul 2011
    -
    14,750

    Catalyzed Substitution reactions




    . .

    5-1 Base catalysed hydrolysis
    Werner . . ǡ . ϖ 5-1 D .


    [CoCl(NH3)5]2+ + HO- [Co(OH)(NH3)5]2++ Cl-

    : 5-1


    ϖ . ɖ ߡ Garrick 1937 Bjerrum 1907. 5-2.



    : 5-2


    . . Dcb ( dissociative conjugate base). .

    Presence of acidic protons
    Dcb. ʖ [Co(CN)5Cl]3- trans-[CoCl2(Ph2PCH2CH2PPh2)2]+- .
    Dcb . . ǡ [CoCl(NH3)5]2+ k -1/k2 = 7-100105. ߡ 5-3.




    : 5-3


    Dcb.

    Dissociation mechanism
    DS = +80 to +160 J K-1mol-1 DV = +19 to +43 cm3 mol-1. ߡ . DV .
    ɺ . [CoCl(NH2Me)5]2+ [CoCl(H2NCHMeEt)5]2+ 104 105 [CoCl(NH3)5]2+. .
    . 5-4.
    .......

  2. #2

    Aug 2011
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    3,025

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  3. #3

    Aug 2011
    2,846

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    Thank you so much
    refresh


  4. #4

    Jul 2011
    -
    15,678

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  5. #5
      Eiman
    Jul 2011
    -
    14,750

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    .......

  6. #6
      Noor
    Jul 2011
    857

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  7. #7

    Jul 2012
    5,302

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