2) A given complex MLn forms only a dihydrogen complex (n2-H2)MLn, not the true oxidative addition product (H)2MLn with H2. Would the true oxidative addition product be more or less likely to form as we move to (a) more electron-releasing ligands L, (b) from a third- to a first-row metal, M, (c) to the 1 electron oxidation product [H2MLn]? Would you expect the same metal fragment above to form an ethylene complex, (C2H4)MLn, with predominantly Dewar-Chatt or metalacyclopropane character? Explain all your results.

2) A given complex MLn forms only a dihydrogen complex (n2-H2)MLn, not the true oxidative addition product (H)2MLn with H2. Would the true oxidative addition product be more or less likely to form as we move to (a) more electron-releasing ligands L, (b) from a third- to a first-row metal, M, (c) to the 1 electron oxidation product [H2MLn]? Would you expect the same metal fragment above to form an ethylene complex, (C2H4)MLn, with predominantly Dewar-Chatt or metalacyclopropane character? Explain all your results.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Coordination Chemistry

It is a part of chemistry, in which the study of compounds that have central atoms surrounded by molecules or ions, known as ligand, is known as coordination chemistry.

Question

2) A given complex MLn forms only a dihydrogen complex (n²-H2)MLn, not the true
oxidative addition product (H)2MLn with H2. Would the true oxidative addition
product be more or less likely to form as we move to (a) more electron-releasing
ligands L, (b) from a third- to a first-row metal, M, (c) to the 1 electron oxidation
product [H2MLn]*? Would you expect the same metal fragment above to form
an ethylene complex, (C2H4)MLn, with predominantly Dewar-Chatt or
metalacyclopropane character? Explain all your results.

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3. Metal ion complexation is known to affect the half-wave potential for the reduction of a metal ion. M+ + Hg+ne → M(Hg) MxAMAX (n-x)+ [1] [2] The relationship between the molar concentrations of the ligand CL and the shift in the half-wave potential is: = (E) E (-0.0592/n)logK - (0.0592x/n)logcL [3] Where (E) and E½ are half-wave potentials for the complexed and uncomplexed cation, respectively, K, is the formation constant for the complex, and x is the molar combining ratio of the complexing agent to cation. The following polarographic data were obtained for the reduction of Pb2+ to its amalgam from solutions that were 2.00 x 10-3 M in Pb2+, 0.100 M in KNO3, and different concentrations of the anion A. From the half-wave potentials, find (i) the formula of the complex, and (ii) its formation constant Kſ. Concentration A, M 0.0000 E vs. SCE, V -0.405 0.0200 -0.473 0.0600 -0.507 0.1007 -0.516 0.3000 -0.547 0.5000 -0.558