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)

Explain borazole, Borazole is very stable because it is aromatic; each nitr...

Borazole is very stable because it is aromatic; each nitrogen contributes two p electrons and each boron contributes zero electrons, for a total of six p electrons in the aromatic

Insulin, what is by metabolism

what is by metabolism

Laws of chemical combination, how many grams of silicon are present in 35 g...

how many grams of silicon are present in 35 grams of silicon?

Synthesis of freon and freon synthesis, explain the synthesis of freon and ...

explain the synthesis of freon and westron i need only the synthesis of those coompound

Dicarboxylic acids, Dicarboxylic acids The acids consisting of two carb...

Dicarboxylic acids The acids consisting of two carboxylic groups are known as dicarboxylic acids. The saturated dicarboxylic acid are denoted by the general formula 2n (COOH

Octane number - characteristics of hydrocarbons, Octane number - Characteri...

Octane number - Characteristics of hydrocarbons It is utilized for measuring the knocking character of fuel utilized in petrol engine.  The octane quantity of an offered sample

ATOMIC STRUCTURE, CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH ...

CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH OF 2A

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