O.Chem Question; sp C- sp3 C VS sp2 C - sp3 C

[deleted1086370]

Comparing bonds btw 1) sp C- sp3 C VS 2) sp2 C - sp3 C

shouldn't 2) has strong C-C bond?

in my understanding, sp C has triple bond which is stronger bond pulling the bond away from sp C- sp3 C therefore making the bond weaker compared to sp2 C- sp3 C.

is this the correct logic to think of?



little confused 🙁

thank you for your help in advance!

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[GreenDuck12]

Comparing bonds btw 1) sp C- sp3 C VS 2) sp2 C - sp3 C

shouldn't 2) has strong C-C bond?

in my understanding, sp C has triple bond which is stronger bond pulling the bond away from sp C- sp3 C therefore making the bond weaker compared to sp2 C- sp3 C.

is this the correct logic to think of?



little confused 🙁

thank you for your help in advance!

The sp-c-sp3 bond will be stronger due to having more s character than sp2. Sp will have 50% s character as opposed to sp2 which would be 33%. That s character will hold electrons more closely decreasing distance and increasing bond dissociation energy. While the electrons will be closer carbon is the primary atom so it won’t really draw electrons towards its nucleus away from the other carbons (which you would see with more electronegative atoms).