Why is only the dz^2 orbital involved in sp3d hybridization and not the other d orbitals

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40 Replies
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Jeepaglu
Jeepaglu2mo ago
Can you resend the image? It's not loading for me
________
________OP2mo ago
The image is actually blank because I couldn’t find any picture related to my doubt[any picture wouldn't be really helpful ig]. The posting required an attachment, so I had to upload a blank one (I'm new to this concept so I might be missing something basic)
Jeepaglu
Jeepaglu2mo ago
Oh @Enamine your domain
Shhh
Shhh2mo ago
Because u need to know the shape of the diagram u will get it easily Send it
Varun_Arora
Varun_Arora2mo ago
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Varun_Arora
Varun_Arora2mo ago
Does that clear it up? @Jeepaglu @__
________
________OP2mo ago
is it like mandatory for two orbitals to have e density along the same axis to intermix? moreover, can the z and x axis or the z and y axis form the equatorial plane? Idk man I feel like I'll need to spend some time more with this then these doubts will automatically clear up
GBBEAST
GBBEAST2mo ago
What if the plane horizontal is xz or yz plane
Varun_Arora
Varun_Arora2mo ago
Internuclear axis ke hisab se change kar lo Ahmm geometrically accessible hona chahiye like
________
________OP2mo ago
see I kind of feel like if we switch up these axes we'll have to swicth the names of the orbitals themselves(this is just like a very vague guess which prob isnt true) so for the sake of the simplicity Ill just ask why is the d orbital having that single dumb bell shape with a ring is involved in sp3d hybridisation
GBBEAST
GBBEAST2mo ago
@Enamine
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GBBEAST
GBBEAST2mo ago
Like agar aisa hai toh dz2 kaha rakhenge I am just asking maybe this could be completely wrong Sorry the horizontal axis is z Not y
Jeepaglu
Jeepaglu2mo ago
Oh wait mujhe samajh gya
Varun_Arora
Varun_Arora2mo ago
Why not? Most of its electron density is on the axis
Jeepaglu
Jeepaglu2mo ago
Wait Nvm Won't pz and dz2 orbitals collide
GBBEAST
GBBEAST2mo ago
Yeah that's what I am asking Ohhh
Jeepaglu
Jeepaglu2mo ago
And won't the negative plane around the dz2 orbital collide with the px py orbitlad
GBBEAST
GBBEAST2mo ago
Which mean we can't take dx2-y2 Because it will intersect the plane So dz2 is the only choice I get it
Jeepaglu
Jeepaglu2mo ago
What about non axial Like dxy
GBBEAST
GBBEAST2mo ago
They would also intersect in case the horizontal plane is xz That is not a hybrid structure
Jeepaglu
Jeepaglu2mo ago
Oht hat makes sense But what about pz and dz2
________
________OP2mo ago
if we switch up the places of px and pz
GBBEAST
GBBEAST2mo ago
Like how are you arranging them what is the horizontal plane ? It would not make any diff
________
________OP2mo ago
why?
GBBEAST
GBBEAST2mo ago
Because they are in the same plane which is xz so we are rotating the structure like a fidget spinner Which would still be the same structure
________
________OP2mo ago
what if I like literally switch up px and pz(idk if I can) and then make px and dx^2 - y^2 overlap along the x axis(the dx^2 - y^2 also has e density along hte x axis na?) idk if I can do that cuz its been merely 3 - 4 hrs since I was introduced to this concept
GBBEAST
GBBEAST2mo ago
Can you draw it on a page and send it I am not able to interpret it
________
________OP2mo ago
I didn't mean to write "overlap"
GBBEAST
GBBEAST2mo ago
Wait I eat and get back to it
________
________OP2mo ago
I mean to write intermix what I mean is 1 - in the equatorial plane - py, pz and s intermix 2 - perpendicula to the equatorial plane - dx^2-y^2 and px intermix
Jeepaglu
Jeepaglu2mo ago
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GBBEAST
GBBEAST2mo ago
Hey Ur first case is possible because the px and py orbital are in the same plane which is xy and the dz² orbital is perpendicular to this plane so these two won't interfere
Jeepaglu
Jeepaglu2mo ago
But dz2 orbital has a negative wave function on the xy plane
GBBEAST
GBBEAST2mo ago
Yeah so the out of phase overlap will cancel out each other and we get a resultant structure First case is similar to this @Jeepaglu Wapis aa Baaki u know hybridisation is a mathematical concept toh Jo pz or dz² orbital overlap karte hai woh ek resultant structure milta hai
Jeepaglu
Jeepaglu2mo ago
Oh Haan abhi samjha Tanks :)
GBBEAST
GBBEAST2mo ago
👍
________
________OP2mo ago
bhai doubt to mera tha 😭
Varun_Arora
Varun_Arora2mo ago
Yoo I just noticed Abhi clear hai ya you wanna know something ?
Jeepaglu
Jeepaglu2mo ago
our doubt

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