For each of the following complexes, indicate the following: a) the formal charg

Question

For each of the following complexes, indicate the following:

a) the formal charge (formal oxidation state) for the metal

b) Using the charged method of electron counting, give the number of electrons contributed by the metal and the total number of electrons contributed by the ligands.

c) Using the neutral method of electron counting, give the number of electrons contributed by the metal and the total number of electrons contributed by the ligands.

d) the valence shell electron count for the metal (eg. 18 electron complex, 17 electron complex, etc.). COD = 1,5-cyclooctadiene; C2H4 = ethylene; allyl = -CH2CH=CH2

Charged method, Charged Charged NeutralNeutraNeutral Formalmethod method, method method, method, Valence Metal Complex charge on e- from the e- from the e- from the e- from the charge on shell the metal metal igands metalligands the complex ecount Fe(CO)42 (m-C5H5)2TaMe2 (5-C5H5)W(CO)3(H) ( -C3H5)2Ni

Explanation / Answer

Charged Method:Formal charge on Metal

Metal Complex

Charged Method:Formal charge on Metal

Charged Method:electron from metal Charged Method:electron from ligand Neutral Method: Formal charge on Metal Neutral Method: electron from metal Neutral Method:electron from ligand [Fe(CO)4]-2 +2 6 8 0 6 8 [(n5-C5H5)2TaMe2]+ +1 3 8 +3 1 8 [(n5-C5H5)V(n7-C7H7)] +2 3 12 0 5 12 [(n5-C5H5)W(CO)3H] +2 4 12 0 6 12 [(n3-C3H5)2Ni] 0 10 6 0 10 6

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