CSIR Chemical Sciences: Questions 123 - 126 of 329

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Question number: 123

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

MCQ▾

Question

Total number of vertices metal clusters, [ Ru6(C)(CO)17], [ OS5(C)(CO)15 ] and [ Ru5(C)(CO)16 ] are 6, 5, 5. Predict the structure of these complexes:

Choices

Choice (4) Response

a.

Closo, Nido, Arachno

b.

Arachno, Closo, Nido

c.

Arachno, nido, Closo

d.

Closo, Nido, Nido

Question number: 124

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

Appeared in Year: 2015

MCQ▾

Question

βhydrogen elimination will be facile in: (June)

Choices

Choice (4) Response

a.

Finding facile beta-hydrogen elimination: Choice A

Finding Facile Beta-Hydrogen Elimination: Choice A

Finding facile beta-hydrogen elimination

b.

Finding facile beta-hydrogen elimination: Choice B

Finding Facile Beta-Hydrogen Elimination: Choice B

Finding facile beta-hydrogen elimination

c.

Finding facile beta-hydrogen elimination: Choice C

Finding Facile Beta-Hydrogen Elimination: Choice C

Finding facile beta-hydrogen elimination

d.

Finding facile beta-hydrogen elimination: Choice D

Finding Facile Beta-Hydrogen Elimination: Choice D

Finding facile beta-hydrogen elimination

Question number: 125

» Inorganic Chemistry » Organometallic Compounds » Organometallics in Homogeneous Catalysis

Appeared in Year: 2015

MCQ▾

Question

Among the following, species expected to show fluxonial behaviour is/are:

  1. [NiCl4]2[Td]

  2. IF7[pentagonalbipyromidal]

  3. [COF6]3(On)

  4. Fe(CO)5[TBP]

Choices

Choice (4) Response

a.

3 and 4

b.

1 and 4

c.

2 and 4

d.

2 and 3

Question number: 126

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

Appeared in Year: 2015

MCQ▾

Question

Refluxing of RhCl3.3H2O with an excess of PPh3 in ethanol gives a complex A, ‘A’ and valence e on Rh are: (June)

Choices

Choice (4) Response

a.

[RhCl(PPh3)5],18

b.

[RhCl(PPh3)5],16

c.

[RhCl(PPh3)3],18

d.

[RhCl(PPh3)3],16

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