Metal Ligand Bonding Part 2, Ligand Field Theory (LFT), Sigma Bonding in Octahedral Complexes

This video lecture is helpful in understanding Sigma Bonding in Octahedral Complexes, draw ligand group orbitals and formation of molecular orbitals in Octahedral Complexes. After going through this lecture the students will be able to draw the molecular orbital energy level diagram of Sigma Bonding in Octahedral Complexes and learn filling of electrons in the molecular orbitals. The video lecture will also be helpful in the regular and competitive examinations of the M Sc students.

[@priyankajhankal6159]

Wow ma'am bhut achha smjhaya apne... Yeh topics jldi se koi ni padhata...

[@dr.geetatewari4592]

thanks a lot

[@bhawanatripathi6275]

Thanku mam for this amazing and informative lecture❤

[@rrishendrakumar7062]

Wow ma'am, very informative and targeted content...

[@dr.geetatewari4592]

Thanks a lot 😊

[@santoshpathak02]

Nice

[@dr.geetatewari4592]

Thanks

[@Sadhanablite]

Ma'am energy level ka order MOT diagram mai kaise yaad kare ... Kon sa upr hoga kon neeche hoga

[@dr.geetatewari4592]

The energy order of molecular orbitals has been fixed according to group theory.
However, the following is the explanation for the energy level order of molecular orbitals in transition metal complexes:
4s (a1g ) and 4p (t1u) orbitals can have a better overlap with LGOs than the 3d (eg or t2g) orbitals can have with the LGOs (d orbitals are diffused and the overlap is generally poor), the a1g and t1u, MOs are at the lowest energy (corresponding a1g* and t1u* go to the highest energy levels). The eg and eg* orbitals derived from the eg orbitals of CFT, interact less with the LGOs due to a poorer overlap, while the t2g orbitals remain nonbonding in a σ only picture and are not displaced.
s orbital is of lower energy as compared to p orbitals, hence the formed bonding and antibonding orbitals were having lower energy than t1u MOs.
Energy order of MOs in octahedral complexes
a1g

[@Sadhanablite]

@@dr.geetatewari4592 omg thank ma'am for detailed explanation