Deck 21: Transition Metal Complexes

Question 1

Transition metals can react with a variety of molecules called ____.

A)transition metal complexes
B)metals
C)ligands
D)complexes
E)covalent compounds

Answer 1

ligands

Question 2

Consider the transition metal complex FeCp(CO)₃⁺.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Answer 2

+2

Question 3

Consider the transition metal complex Cr(CO)₅^2-.The oxidation state of the metal is ____.

A)0
B)-1
C)-2
D)+1
E)+2

Answer 3

-1

Question 4

Consider the transition metal complex CrF₅.The oxidation state of the metal is ____.

A)0
B)+1
C)+3
D)+5
E)+6

Question 5

Consider the transition metal complex Rh(PPh₃)₃Cl.The oxidation state of the metal is ____.

A)+1
B)+2
C)+3
D)+4
E)+5

Question 6

Consider the transition metal complex Fe(CO)₅.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Question 7

Consider the transition metal complex Ni(CO)₄.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Question 8

Consider the transition metal complex Ni(CN)₃(H₂O)₂^3-.The oxidation state of the metal is ____.

A)+1
B)+2
C)+3
D)+4
E)+5

Question 9

Consider the transition metal complex FeCp₂.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Question 10

Consider the transition metal complex Cr(C₆H₆)(CO)₃.The oxidation state of the metal is ____.

A)0
B)+1
C)+3
D)+5
E)+6

Question 11

Consider the transition metal complex Ni(Cl)₄^2-.The oxidation state of the metal is ____.

A)+1
B)+2
C)+3
D)+4
E)+5

Question 12

Consider the transition metal complex Mo(CO)₆.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Question 13

Consider the transition metal complex Ni(PPh₃)₂(CO)₂.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Question 14

The noble gas configuration for a transition metal is ____ valence electrons.

A)2
B)6
C)8
D)10
E)18

Question 15

Consider the transition metal complex Cr(H₂O)₆^3-.The oxidation state of the metal is ____.

A)0
B)+1
C)+3
D)+5
E)+6

Question 16

Consider the transition metal complex Pd(PPh₃)₄.The oxidation state of the metal is ____.

A)0
B)+1
C)+3
D)+5
E)+6

Question 17

Consider the transition metal complex Ni(CN)₄^2-.The oxidation state of the metal is ____.

A)+1
B)+2
C)+3
D)+4
E)+5

Question 18

Consider the transition metal complex Fe(CN)₆^3-.The oxidation state of the metal is ____.

A)0
B)+1
C)+2
D)+3
E)+4

Question 19

Consider the transition metal complex Cr(CO)₆.The oxidation state of the metal is ____.

A)0
B)+1
C)+3
D)+5
E)+6

Question 20

Consider the transition metal complex CrOF₅.The oxidation state of the metal is ____.

A)0
B)+1
C)+3
D)+5
E)+6

Question 21

The molecular formula for Wilkinson's catalyst is ____.

A)Pd/C
B)Rh(Ph₃P)₃CO
C)Rh(Ph₄P)₃Cl
D)Rh(Ph₃P)₄Cl
E)Rh(Ph₃P)₃Cl

Question 22

An 18 electron complex loses a ligand to become a 16 electron complex.This is an example of a(n)____ reaction.

A)oxidative addition
B)ligand dissociation
C)insertion
D)ligand association
E)reductive elimination

Question 23

Consider the transition metal complex Ni(CN)₃(H₂O)₂^3-.The total number of valence electrons this complex possesses is ____.

A)2
B)8
C)10
D)12
E)18

Question 24

Consider the transition metal complex Pd(PPh₃)₄.The total number of valence electrons this complex possesses is ____.

A)2
B)8
C)10
D)12
E)18

Question 25

When a ligand is lost from a transition metal complex and is then replaced by another ligand this is known as ____.

A)oxidative addition
B)deinsertion
C)insertion
D)ligand exchange
E)reductive elimination

Question 26

Treating 1-octene with Wilkinson's catalyst will produce ____.

A)2-octene
B)octene
C)octane
D)1-heptene
E)heptane

Question 27

The second step in the mechanism of an alkene reacting with Wilkinson's catalyst is ____.

A)insertion
B)ligand association
C)oxidative addition
D)reductive elimination
E)ligand dissociation

Question 28

Coupling benzyl bromide with propene,using a Pd catalyst,is an example of ____.

A)Stille Coupling and Carbonylation
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 29

Consider the transition metal complex FeCp₂.The total number of valence electrons this complex possesses is ____.

A)2
B)8
C)10
D)12
E)18

Question 30

The last step in the mechanism of an alkene reacting with Wilkinson's catalyst is ____.

A)insertion
B)ligand association
C)oxidative addition
D)reductive elimination
E)ligand dissociation

Question 31

Rh(NH₃)₃Cl reacting with H₂(g)to form Rh(NH₃)ClH₂ is an example of a(n)_____ reaction.

A)oxidative addition
B)ligand dissociation
C)insertion
D)ligand association
E)reductive elimination

Question 32

trans-Stilbene can be generated from a Pd catalyzed reaction of an aryl halide with styrene.This reaction is an example of ____.

A)Stille Coupling and Carbonylation
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 33

Coupling an aryl borate with an aryl halide,using a Pd catalyst,is an example of ____.

A)Stille Coupling and Carbonylation
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 34

Rh(NH₃)ClH₂ decomposing to Rh(NH₃)₃Cl and H₂(g)is an example of a(n)_____ reaction.

A)oxidative addition
B)ligand dissociation
C)insertion
D)ligand association
E)reductive elimination

Question 35

The first step in the mechanism of an alkene reacting with Wilkinson's catalyst is ____.

A)insertion
B)ligand association
C)oxidative addition
D)reductive elimination
E)ligand dissociation

Question 36

The fourth step in the mechanism of an alkene reacting with Wilkinson's catalyst is ____.

A)insertion
B)ligand association
C)oxidative addition
D)reductive elimination
E)ligand dissociation

Question 37

The third step in the mechanism of an alkene reacting with Wilkinson's catalyst is ____.

A)insertion
B)ligand association
C)oxidative addition
D)reductive elimination
E)ligand dissociation

Question 38

The fifth step in the mechanism of an alkene reacting with Wilkinson's catalyst is ____.

A)insertion
B)ligand association
C)oxidative addition
D)reductive elimination
E)ligand dissociation

Question 39

Consider the transition metal complex Cr(H₂O)₆^3-.The total number of valence electrons this complex possesses is ____.

A)2
B)8
C)10
D)12
E)18

Question 40

Consider the transition metal complex Fe(CO)₅.The total number of valence electrons this complex possesses is ____.

A)2
B)8
C)10
D)12
E)18

Question 41

An allyl anion donates a total of ____ electrons to a metal complex.

Question 42

In the fourth step in olefin metathesis the ____.

A)metal alkylidene ([M]=)undergoes a [2+2] pericyclic addition with an alkene alkene to form a metalcyclobutane intermediate
B)metalcyclobutane undergoes a reverse [2+2] addition (i.e.,retro [2+2] reaction)to generate a new metal alkylidene
C)reaction of the new metal alkylidene with a new alkene (by [2+2] addition)to generate a new metalcyclobutane intermediate
D)formation of the alkene product from a retro [2+2] reaction of the second metal alkylidene
E)alkene reacts with a second alkene by [2+2] addition

Question 43

In the third step in olefin metathesis the ____.

A)metal alkylidene ([M]=)undergoes a [2+2] pericyclic addition with an alkene alkene to form a metalcyclobutane intermediate
B)metalcyclobutane undergoes a reverse [2+2] addition (i.e.,retro [2+2] reaction)to generate a new metal alkylidene
C)reaction of the new metal alkylidene with a new alkene (by [2+2] addition)to generate a new metalcyclobutane intermediate
D)formation of the alkene product from a retro [2+2] reaction of the second metal alkylidene
E)alkene reacts with a second alkene by [2+2] addition

Question 44

The cyclopentadienyl anion donates a total of ____ electrons to a metal complex.

Question 45

A halide anion donates a total of ____ electrons to a metal complex.

Question 46

Coupling an aryl tin reagent with an alkenyl halide,using a Pd catalyst,is an example of ____.

A)Stille Coupling
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 47

The elements that have partly filled d (or f)shells are known as ____.

Question 48

An alkanide anion donates a total of ____ electrons to a metal complex.

Question 49

The hydride anion donates a total of ____ electrons to a metal complex.

Question 50

The first step in olefin metathesis has the metal alkylidene ([M]=)reacting with an alkene by ____ addition to form a ____ .

A)[2+2],metalcyclopropoane
B)[4+2],metalcyclobutane
C)[2+2],metalcyclobutane
D)[4+2],metalcyclopropane
E)[2+2],metalcyclopentane

Question 51

Reacting 4-nitrostyrene with iodobenzene under Heck-Mizoroki conditions will generate ____ as its product.

A)p-nitrostilbene
B)o-nitrostilbene
C)m-nitrostilbene
D)stilbene
E)p-aminostilbene

Question 52

The corrin ring found within Vitamin B₁₂ consists of ____ subunits.

A)2,pyrrole
B)4,pyrrole
C)2,pyridine
D)4,pyridine
E)4,imidazole

Question 53

Coupling an aryl tin reagent with an alkenyl halide,using a Pd catalyst in the presence of CO,is an example of ____.

A)Stille Coupling and Carbonylation reaction
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 54

The transition metal found in the core of Vitamin B₁₂ is ____ and in its stable commercial form has a ____ oxidation state.

A)Co,+3
B)Cr,+3
C)Cr,+2
D)Co,+2
E)Co,+1

Question 55

Vitamin ____ is the only known biomolecule that possesses a carbon-metal bond.

A)A
B)C
C)B₁₂
D)K
E)B₆

Question 56

Organometallic complexes,such as Grignard reagents,can form ____ bonds.

Question 57

Coupling a terminal alkyne with an alkenyl halide,using a mixture of a Pd and Cu(I)catalyst,is an example of ____.

A)Stille Coupling and Carbonylation reaction
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 58

Treating an aryl halide with a dialkyl cuprate is an example of ____.

A)Stille Coupling and Carbonylation reaction
B)Suzuki-Miyaura Coupling
C)Heck-Mizoroki Coupling
D)Sonogashira Coupling
E)Gilman Reagent-Mediated Coupling

Question 59

In the first step in olefin metathesis the ____.

A)metal alkylidene ([M]=)undergoes a [2+2] pericyclic addition with an alkene alkene to form a metalcyclobutane intermediate
B)metalcyclobutane undergoes a reverse [2+2] addition (i.e.,retro [2+2] reaction)to generate a new metal alkylidene
C)reaction of the new metal alkylidene with a new alkene (by [2+2] addition)to generate a new metalcyclobutane intermediate
D)formation of the alkene product from a retro [2+2] reaction of the second metal alkylidene
E)alkene reacts with a second alkene by [2+2] addition

Question 60

In the second step in olefin metathesis the ____.

A)metal alkylidene ([M]=)undergoes a [2+2] pericyclic addition with an alkene alkene to form a metalcyclobutane intermediate
B)metalcyclobutane undergoes a reverse [2+2] addition (i.e.,retro [2+2] reaction)to generate a new metal alkylidene
C)reaction of the new metal alkylidene with a new alkene (by [2+2] addition)to generate a new metalcyclobutane intermediate
D)formation of the alkene product from a retro [2+2] reaction of the second metal alkylidene
E)alkene reacts with a second alkene by [2+2] addition

Question 61

A student wants to make 3-nitro-1-phenyl-1-butyne using Sonogahira coupling conditions,beginning with iodobenzene.This student will also require ____ in order to make this product.

Question 62

Reacting 1-pentyne with iodobenzene in the presence of CuI,Pd catalyst (in an amine base)will generate ____ as its product.

A)3-phenyl-1-pentyne
B)1-phenyl-1-pentyne
C)1-phenyl-1-butyne
D)1-phenyl-1-propyne
E)3-phenyl-1-butyne

Question 63

Reacting 2-nitrostyrene with iodobenzene under Heck-Mizoroki conditions will generate ____ as its product.

A)p-nitrostilbene
B)o-nitrostilbene
C)m-nitrostilbene
D)stilbene
E)p-aminostilbene

Question 64

The valence electron count for Fe in Fe(CO)₅ is ____.

Question 65

A student wants to make 3-chloro-1-phenyl-1-propyne using Sonogahira coupling conditions,beginning with iodobenzene.This student will also require ____ in order to make this product.

Question 66

The total number of valence electrons contributed by all nitrogen atoms toward Re is ____.

Question 67

An hydrogenation catalyst that contains a solid phase (i.e.,metal catalyst)and a liquid phase (i.e.,solution of unsaturated compound)is known as a ____ catalyst.

Question 68

Reacting 1-butyne with iodobenzene in the presence of CuI,Pd catalyst (in an amine base)will generate ____ as its product.

A)3-phenyl-1-propyne
B)1-phenyl-1-pentyne
C)1-phenyl-1-butyne
D)1-phenyl-1-propyne
E)3-phenyl-1-butyne

Question 69

A student wants to make 4-nitro-1-phenyl-1-butyne using Sonogahira coupling conditions,beginning with iodobenzene.This student will also require ____ in order to make this product.

Question 70

A student wants to make 4-bromo-1-phenyl-1-butyne using Sonogahira coupling conditions,beginning with iodobenzene.This student will also require ____ in order to make this product.

Question 71

Converting an alkene to an alkane using the catalyst Raney Ni is ____ hydrogenation.

Question 72

Reacting propyne with iodobenzene in the presence of CuI,Pd catalyst (in an amine base)will generate ____ as its product.

A)3-phenyl-1-propyne
B)1-phenyl-1-pentyne
C)1-phenyl-1-butyne
D)1-phenyl-1-propyne
E)phenylacetylene

Question 73

Sonogashira and ____ reagents both make use of copper reagents in order to perform cross-coupling reactions.

Question 74

Reacting styrene with chlorobenzene under Heck-Mizoroki conditions will generate ____ as its product.

A)p-nitrostilbene
B)o-nitrostilbene
C)m-nitrostilbene
D)stilbene
E)p-aminostilbene

Question 75

Converting an alkene to an alkane using the catalyst Wilkinson's is ____ hydrogenation.

Question 76

The valence electron count for Mn in MnCp(CO)₃ is ____.

Question 77

Converting an alkene to an alkane using the catalyst Pd/C is ____ hydrogenation.

Question 78

Reacting 3-nitrostyrene with iodobenzene under Heck-Mizoroki conditions will generate ____ as its product.

A)p-nitrostilbene
B)o-nitrostilbene
C)m-nitrostilbene
D)stilbene
E)p-aminostilbene

Question 79

The valence electron count for Cr in CrC₆H₆(CO)₃ is ____.

Question 80

A student wants to make 4-nitro-1-phenyl-1-butyne using Sonogahira coupling conditions,beginning with iodobenzene.This student will also require ____ in order to make this product.