(a) The rate of H2O exchange is faster for paramagnetic [Fe(H2O)6]2+ than for diamagnetic [Fe(CN)s(H2O)]. Provide...

 

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(a) The rate of H2O exchange is faster for paramagnetic [Fe(H2O)6]2+ than for diamagnetic [Fe(CN)s(H2O)]. Provide orbital energy diagrams and crystal field stabilization energy for each complex and use these to suggest an explanation for the observed difference in the rate of reaction. (b) Consider the equilibria [Cu(H2O)6] (aq) + 4 NH3 (aq) = [Cu(NH3)4(H2O)2]2+(aq) + 4 HO Keq = 1.1 x 1010 [Cu(H2O)6]+(aq) + 2en (aq) [Cu(en)2(H2O)2]2+(aq) + 4 HO Keq = 3.9 x 1019 = (en NH2CH2CH2NH2). Interpret the values of Keq: What do these values tell you about the ligands NH3 versus HO? Why is ethylene diamine complex value of Keq so much different from that of the ammine complex? (a) The rate of H2O exchange is faster for paramagnetic [Fe(H2O)6]2+ than for diamagnetic [Fe(CN)s(H2O)]. Provide orbital energy diagrams and crystal field stabilization energy for each complex and use these to suggest an explanation for the observed difference in the rate of reaction. (b) Consider the equilibria [Cu(H2O)6] (aq) + 4 NH3 (aq) = [Cu(NH3)4(H2O)2]2+(aq) + 4 HO Keq = 1.1 x 1010 [Cu(H2O)6]+(aq) + 2en (aq) [Cu(en)2(H2O)2]2+(aq) + 4 HO Keq = 3.9 x 1019 = (en NH2CH2CH2NH2). Interpret the values of Keq: What do these values tell you about the ligands NH3 versus HO? Why is ethylene diamine complex value of Keq so much different from that of the ammine complex?