CSIR Chemical Sciences: Questions 141 - 144 of 329

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Question number: 141

» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity

Appeared in Year: 2015

MCQ▾

Question

Among the following:

  1. [Mn(η5Cp)(CO)3]

  2. [Os(η5CP)2]

  3. [Rh(η5CP)2]

  4. [Fe(η5CP)2]

Compound with most shielded and deshilded Cp protons respectively are: (June)

Choices

Choice (4) Response

a.

4 and 1

b.

3 and 2

c.

3 and 1

d.

4 and 2

Question number: 142

» Inorganic Chemistry » Organometallic Compounds » Synthesis

MCQ▾

Question

M(CO5) on reaction with CH3I gives A

ABPPh3C

B has a vacant site.

Choices

Choice (4) Response

a.

A=CH3M(CO)4B=(CO)4M(OCCH3)C=(CO)4M(PPh3)(OCCH3)

b.

A=CH3M(CO)5B=(CH3CO)M(CO4)C=(CO)4M(PPh3)(OCCH3)

c.

A=CH3M(CO)5B=(CO)4M=CH2C=(CO)4M(PPh3)(CH3)

d.

A=CH3M(CO)4B=(CO)4M=CH2C=(CO)4M(PPh3)(CH3)

Question number: 143

» Inorganic Chemistry » Organometallic Compounds » Synthesis

MCQ▾

Question

For a compound, with alkyl group γ , which of the following will undergo fastest migratory insertion.

Find the one with fastest migratory insertion

Find the One With Fastest Migratory Insertion

Find the one with fastest migratory insertion

Choices

Choice (4) Response

a.

Y=CH3

b.

Y=CH2CH3

c.

Y=CF3

d.

Fastest migratory insertion – Choice D

Fastest Migratory Insertion – Choice D

Fastest migratory insertion

Question number: 144

» Inorganic Chemistry » Organometallic Compounds » Organometallics in Homogeneous Catalysis

MCQ▾

Question

The W-W bond order in [W(η5Cp)(Cl)(CO)2]2

Choices

Choice (4) Response

a.

2

b.

0

c.

3

d.

1

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