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Reshav posted an Question
August 20, 2020 • 13:39 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Ortho phenanthrolene is it sigma donor pi donor or pi acceptor

ortho phenanthrolene is it sigma donor pi donor or pi acceptor

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    Dinesh khalmaniya 1 best-answer

    sigma donors - when coordinated to metal, it forms one single sigma bond,for example NH3 sigma donor and pi donor - when coordinated it forms one sigma bond and one or more pi bonds. The important thing here is that he pi bond is formed by moving electrons from ligand to orbitals of metal sigma donor and pi acceptor - the sigma bond is formed as in examples before, but there is donation of electrons from metal to empty pi-anibonding orbital There are some other types - for example sigma dnnor and d-acceptor where the back donation is to empty atomic d-orbitals of atom coordinated to metal. Hope it helps, I tried as simple as possible but to answer this question some knowledge from general and inorganic chemistry is required

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    strong field ligand are pi acceptable ligand and can form back bonding so these are pi acceptor ligand can be shown by electrochemical series

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    phenanthrolene is an SFL so it can form backbonding so it is pi acceptor as well as sigma donor

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    got it?

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    Priyanshu kumar

    https://youtu.be/tCJsuFwqOaU for detailed explanation see this short video reshav

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    Reshav

    sir how to check whether ligand is pi donor or acceptor or sigma donor

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    Priyanshu kumar best-answer

    It is pi acceptor ligand

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    https://youtu.be/2KDWIBNMglY watch this short video reshav..It helps you more in detail

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    Did you watch this video reshav??

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