CSIR Chemical Sciences: Questions 176 - 179 of 427

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Question number: 176

» Inorganic Chemistry » Organometallic Compounds » Synthesis

MCQ▾

Question

Among the following, which is not isolable?

Choices

Choice (4) Response

a.

Fe(CO)4,O

b.

CO(CO)3,R2Si

c.

Mn(CO)5,Rs

d.

Mn(CO)5,CH3

Question number: 177

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

Appeared in Year: 2015

MCQ▾

Question

In transition metal complex of phosphine (MPR3) complenes, back bonding involves donation of electrons from (June)

Choices

Choice (4) Response

a.

M(t2g)PR3(π*)

b.

PR3(π)M(t2g)

c.

M(t2g)PR3(σ*)

d.

M(eg)P(d)

Question number: 178

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

Appeared in Year: 2015

MCQ▾

Question

With respect to σandπ bonding in Pt-II in the structure given below, which of the following represent correct bonding. (June)

Structure of σ and πbonding in Pt-II

Structure of Σ and Πbonding in Pt-II

Structure of σ and πbonding in Pt-II

Choices

Choice (4) Response

a.

M(σ)L(σ)&M(π)L(π*)

b.

L(π)M(σ)&M(π)L(π*)

c.

L(π)M(π)&L(σ)M(π)

d.

L(σ)M(π)&L(π)M(π)

Question number: 179

» Inorganic Chemistry » Organometallic Compounds » Synthesis

MCQ▾

Question

Ni(CO)4+4PR3Ni(PR3)4+4CO

In above reaction, rate of reaction with increasing concentration of PR3 will:

Choices

Choice (4) Response

a.

Decrease

b.

No effect

c.

First decrease then abruptly increase

d.

Increase

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