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)

Conformation, Which one is most stable form of 1,3 Di tertiary butyl cycloh...

Which one is most stable form of 1,3 Di tertiary butyl cyclohexane?

Nitroalkanes, why nnitroalkanes are highly polor compounds*

why nnitroalkanes are highly polor compounds*

Explain quantum numbers, Quantum numbers explain values of total conserved...

Quantum numbers explain values of total conserved quantities in the dynamics of the quantum system. possibly the most peculiar part of quantum mechanics is the quantization of obs

The charge of an electron & value of free charge on li+ ion, The charge of...

The charge of an electron is -1.6 x10 -19 C.  The value of free charge on  Li + ion will be: (1) 3.6x 10 -19 c                   (2) 1x 10 -19 c      (3) 1.6 x 10 -19

Radiometric titration, what are the principles of radiometric titration

what are the principles of radiometric titration

Important applications of indium, Q. Important applications of indium? ...

Q. Important applications of indium? The most important applications of indium are in protection of bearings against wear and erosion in low melting alloys and in electronic de

The nature of chemical bonding, What is the nature of chemical bonding betw...

What is the nature of chemical bonding between  Cs and F: (1) Covalent (2) Ionic (3) Coordinate (4) Metallic Ans: Ionic

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