acceptor ligands -p (pi), Chemistry

Assignment Help:

 

Most ligands have a nonbonding electron pair that may react as a donor to empty orbitals on the metal atom. In ligands known as π acids or π acceptors a donor-acceptor communication also happens in the reverse direction. If a ligand has empty orbitals of π type symmetry with respect to the bond axis these may react as acceptors for electrons in filled metal orbitals of the correct symmetry. That is known as back donation. The commonest and simplest π acid ligand is carbon monoxide CO. This reacts as a donor in the normal way, through the acquired lone-pair orbital centered on carbon (the 3σ MO). The π antibonding orbital may also interact with filled d orbitals to produce the π-acceptor interaction. The combination of π-acceptor and σ-donor interaction is sometimes defined as synergic, as the electron wants in opposite directions facilitate each other.

Evidence for the π-acceptor communication comes from various sources.

 

2091_Untitled.png

 

Fig. 1. Bonding in CO complexes showing (a) σ overlap of CO lone-pair with empty metal d orbital, and (b) overlap of CO π* with occupied metal d

orbital.

 


Related Discussions:- acceptor ligands -p (pi)

Effect of addition of ingredients on egg foam stability, Q. Effect of addit...

Q. Effect of addition of ingredients on egg foam stability? The addition of other ingredients also influences stability. Sometimes salt is added to an egg white foam for flavou

Describe subatomic particles, Q. What are the Subatomic Particles? Ans...

Q. What are the Subatomic Particles? Ans: What does the inside of atom look like? Following Dalton's discovery that all matter was composed of atoms, scientists wondered i

The ratio of area covered by second orbital to first orbital, The ratio of ...

The ratio of area covered by second orbital to the first orbital is: (1) 1 : 2  (2) 1 : 16       (3) 8 : 1           (4) 16 : 1 Ans:  16 : 1

Nitro compound ., what the uses of nitro compound in pharmacy

what the uses of nitro compound in pharmacy

Periodic table, how periodic table is helpful in chemistry give two example...

how periodic table is helpful in chemistry give two example

Electron, electron partic;e moving as awave

electron partic;e moving as awave

Hi, What are the application of photochemistry in modern technology?

What are the application of photochemistry in modern technology?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd