GATE CY topic:organometalics PYQs & Answers — Page 3

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Questions 21–30 of 33. Imported answers require independent review unless marked reviewed.

Topic practice 33 questionsPage 3 of 4

The CORRECT combination of L1 and L2 among H⁻, NO⁻, MeCH²⁻ and CO, that will satisfy the 18 electron rule for both metal centers in the following neutral molecule, is:

(Given: atomic number of Ru is 44)

Your answerChoose one option.

H⁻, NO⁻

MeCH²⁻, NO⁻

MeCH²⁻, CO

H⁻, CO

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In the following reaction sequence,

the structure of B is (Given: atomic number of Mo is 42)

Your answerChoose one option.

Diagram for Chemistry question 37 (figure 2)

Diagram for Chemistry question 37 (figure 3)

Diagram for Chemistry question 37 (figure 4)

Diagram for Chemistry question 37 (figure 5)

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Among the following,

the total number of species having nido structure is ______

(Given: atomic numbers of H, B, C, O, Ni, Rh and Os are 1, 5, 6, 8, 28, 45 and 76, respectively)

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The product obtained in the reaction of Mn₂(CO)₁₀ with Br₂ is

Your answerChoose one option.

Mn(CO)₅Br

Mn₂(CO)₈Br₂

Mn(CO)₄Br₂

Mn₂(CO)₉Br

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The correct molecular representation of W(Cp)₂(CO)₂ is (Cp = cyclopentadienyl)

Your answerChoose one option.

[W(η¹-Cp)(η³-Cp)(CO)₂]

[W(η¹-Cp)(η⁵-Cp)(CO)₂]

[W(η³-Cp)(η⁵-Cp)(CO)₂]

[W(η⁵-Cp)₂(CO)₂]

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The bond angle (Ti–C–C) in the crystal structure of

—CH₂

is severely distorted due to

Your answerChoose one option.

hydrogen-bonding interaction

agostic interaction

steric bulk of the phosphine ligand

higher formal charge on metal

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The total number of valence electrons in W(η³-Cp)(η⁵-Cp)(CO)₂ is _____. (Atomic number of W = 74)

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The elimination product of the following reaction is

Your answerChoose one option.

I₂

CH₃I

CH₃COI

I₃⁻

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The reaction of equimolar quantities of Fe(CO)₅ and OH⁻ gives a complex species X which on further reaction with MnO₂ gives species Y. X and Y, respectively, are

Your answerChoose one option.

[Fe(CO)₅(OH)]⁻ and Fe₂(CO)₉

[Fe(CO)₄]²⁻ and Mn₂(CO)₁₀

[HFe(CO)₄]⁻ and Fe₂O₃

[HFe(CO)₄]⁻ and Fe₃(CO)₁₂

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The hapticity of cycloheptatriene, (C

), in Mo(C

)(CO)

is __________

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GATE CY topic:organometalics PYQs

Question 36

Question 37

Question 48

Question 30

Question 31

Question 17

Question 23

Question 33

Question 42

Question 12