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Answers to Problem 1 (See Section 2.4.4)

1)  [Cr(CO)66(Cr) + 2(CO) × 6 = 18 
2)  [CpFe(CO)2Me] 5(Cp) + 8(Fe) + 2(CO) × 2 + 1(Me) = 18 
3)  [Mo(C6H6)26(Mo) + 6(C6H6) × 2 = 18 
4)  [(CO)5Mn-Mn(CO)52(CO) × 5 + 7(Mn) + 1(Mn(CO)5) = 18 
5)  [Fe(CO)3(PPh3)28(Fe) + 2(CO)) × 3 + 2(PPh3) × 2 = 18 
6)  [Fe(H)2(CO)48(Fe) + 1(H) × 2 + 2(CO) × 4 = 18 
7)  [Co(CN)2(CO)(PEt3)2] 9(Co) + 1(CN) × 2 + 2(CO) + 2(PEt3) × 2 + 1 (minus charge) = 18 
8)  [Pt(C2H4)Cl3] 10(Pt) + 2(C2H4) + 1(Cl) × 3 + 1(minus charge) = 16 
9)  [CpFe(CO)2(PMe3)]+ 5(Cp) + 8(Fe) + 2(CO) × 2 + 2(PMe3) – 1(plus charge) = 18 
10) [(η5-C5H5)(η1-C5H5)Ru(CO)25(η5-C5H5) + 1(η1-C5H5) +8(Ru) + 2(CO) × 2 = 18 
11) [Ni(Ph)2(PPh3)210(Ni) + 1(Ph) × 2 + 2(PPh3) × 2 = 16 
12) [CpOs(η3-C3H5)(CO)] 5(Cp) + 8(Os) + 3(η3-C3H5) + 2(CO) = 18 
13) [Cp2Mo(C2H2)] 5(Cp) × 2 + 6(Mo) + 2(C2H2) = 18 
(In this case, the 18-electron rule takes precedence and C2H2 acts as a 2e donor ligand.) 
14) [Pd(PEt3)2(OMe)210(Pd) + 2(PEt3) × 2 + 1(OMe) × 2 = 16 
15) [(η3-C3H5)Pd(μ-Cl)2Pd(η3-C3H5)] 3(η3-C3H5) + 10(Pd) + 1(one of (μ-Cl)2) + 2(the other μ-Cl) = 16 
16) [Mn(CO)5{C(O)Me}] 7(Mn) + 2(CO) × 5 + 1(C(O)Me) = 18 
1)  [Cr(CO)66(Cr) + 2(CO) × 6 = 18 
2)  [CpFe(CO)2Me] 5(Cp) + 8(Fe) + 2(CO) × 2 + 1(Me) = 18 
3)  [Mo(C6H6)26(Mo) + 6(C6H6) × 2 = 18 
4)  [(CO)5Mn-Mn(CO)52(CO) × 5 + 7(Mn) + 1(Mn(CO)5) = 18 
5)  [Fe(CO)3(PPh3)28(Fe) + 2(CO)) × 3 + 2(PPh3) × 2 = 18 
6)  [Fe(H)2(CO)48(Fe) + 1(H) × 2 + 2(CO) × 4 = 18 
7)  [Co(CN)2(CO)(PEt3)2] 9(Co) + 1(CN) × 2 + 2(CO) + 2(PEt3) × 2 + 1 (minus charge) = 18 
8)  [Pt(C2H4)Cl3] 10(Pt) + 2(C2H4) + 1(Cl) × 3 + 1(minus charge) = 16 
9)  [CpFe(CO)2(PMe3)]+ 5(Cp) + 8(Fe) + 2(CO) × 2 + 2(PMe3) – 1(plus charge) = 18 
10) [(η5-C5H5)(η1-C5H5)Ru(CO)25(η5-C5H5) + 1(η1-C5H5) +8(Ru) + 2(CO) × 2 = 18 
11) [Ni(Ph)2(PPh3)210(Ni) + 1(Ph) × 2 + 2(PPh3) × 2 = 16 
12) [CpOs(η3-C3H5)(CO)] 5(Cp) + 8(Os) + 3(η3-C3H5) + 2(CO) = 18 
13) [Cp2Mo(C2H2)] 5(Cp) × 2 + 6(Mo) + 2(C2H2) = 18 
(In this case, the 18-electron rule takes precedence and C2H2 acts as a 2e donor ligand.) 
14) [Pd(PEt3)2(OMe)210(Pd) + 2(PEt3) × 2 + 1(OMe) × 2 = 16 
15) [(η3-C3H5)Pd(μ-Cl)2Pd(η3-C3H5)] 3(η3-C3H5) + 10(Pd) + 1(one of (μ-Cl)2) + 2(the other μ-Cl) = 16 
16) [Mn(CO)5{C(O)Me}] 7(Mn) + 2(CO) × 5 + 1(C(O)Me) = 18 

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