Bond lenghts.

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405404782 Gabriel Rigole 4F
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Joined: Sat Aug 17, 2019 12:18 am

Bond lenghts.

Postby 405404782 Gabriel Rigole 4F » Sun Oct 27, 2019 2:32 pm

Do we need to know how to find bond lengths, other than that double bonds are shorter and single bonds are longer?

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: Bond lenghts.

Postby Charisse Vu 1H » Sun Oct 27, 2019 2:55 pm

I don't believe that we have to know how to find specific bond lengths. We just have to understand the differences in lengths of double and single bonds. Bond lengths within molecules with resonance must also be considered. The bond lengths in molecules with resonance are more like an "average" of the bond lengths of all the resonance structures of a molecule.

Kaylee Clarke 1G
Posts: 103
Joined: Fri Aug 30, 2019 12:15 am

Re: Bond lenghts.

Postby Kaylee Clarke 1G » Sun Oct 27, 2019 3:02 pm

Dr. Lavelle didn't mention us needing to know bond lengths. We just need to understand that the length of a single bond will not be equal to that of a double bond, and that resonance will portray that blending of structures with said bonds.

Vivianvelazquez_1J
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Re: Bond lenghts.

Postby Vivianvelazquez_1J » Sun Oct 27, 2019 3:03 pm

I don't think we have to know how to find bond lengths If we do I'm sure he will bring it up in the lecture as we have not gone over how to find bond lengths yet. We were only told about one that was observed from C-C.

LeAirraBullingor2k
Posts: 77
Joined: Wed Mar 13, 2019 12:15 am

Re: Bond lenghts.

Postby LeAirraBullingor2k » Sun Oct 27, 2019 4:45 pm

I don't think we have to know how to calculate bond lengths since this was never mentioned. It just seems like he just wants us to know that double bonds are shorter than single ones.

AryaG_4C
Posts: 50
Joined: Mon Sep 30, 2019 12:16 am

Re: Bond lenghts.

Postby AryaG_4C » Sun Oct 27, 2019 4:48 pm

In lecture we were told that those molecules that have resonance have a bond length that is in between that of a single and double bond length. Moreover, the general rule is that single bonds are bigger than double bonds.

Brian J Cheng 1I
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Re: Bond lenghts.

Postby Brian J Cheng 1I » Sun Oct 27, 2019 4:56 pm

We haven't been taught how exactly to obtain measurements for bond lengths as of now. Professor Lavelle specified the different lengths to prove that double and triple bonds have higher attraction and thus shorter lengths than single bonds, and the bonds for resonance structures have lengths between double and single bonds due to the attraction being evenly dispersed between all bonds of a resonance molecule.

Betania Hernandez 2E
Posts: 107
Joined: Fri Aug 02, 2019 12:15 am

Re: Bond lenghts.

Postby Betania Hernandez 2E » Sun Oct 27, 2019 5:54 pm

I don't think you have to know how to find the bond lengths but rather the general concepts that double bonds are shorter than single bonds

105194078
Posts: 52
Joined: Thu Sep 19, 2019 12:17 am

Re: Bond lenghts.

Postby 105194078 » Sun Oct 27, 2019 6:44 pm

Brian J Cheng 1A wrote:We haven't been taught how exactly to obtain measurements for bond lengths as of now. Professor Lavelle specified the different lengths to prove that double and triple bonds have higher attraction and thus shorter lengths than single bonds, and the bonds for resonance structures have lengths between double and single bonds due to the attraction being evenly dispersed between all bonds of a resonance molecule.


Yes! I agree with you on the length of the resonance bond between molecules. According to my PLF the length of the bond is not singular or double bond size but rather in between those lengths.

Ashley Kumar 3F
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Joined: Sat Sep 07, 2019 12:18 am

Re: Bond lenghts.

Postby Ashley Kumar 3F » Sun Oct 27, 2019 6:46 pm

Dr. Lavelle did not say anything about needing to know bond lengths so I doubt it

Sean Tran 2K
Posts: 65
Joined: Sat Aug 17, 2019 12:17 am

Re: Bond lenghts.

Postby Sean Tran 2K » Sun Oct 27, 2019 6:47 pm

If we were required to know bond lengths, I think the values would be given to us to use in whatever calculations are required.

Sadhana_Dicussion_4A
Posts: 51
Joined: Sat Sep 07, 2019 12:19 am

Re: Bond lenghts.

Postby Sadhana_Dicussion_4A » Sun Oct 27, 2019 7:19 pm

I don't think we need to know how to calculate specific bond lengths. I think all you need to know is that single bonds have longer bond lengths than double bonds which have longer bond lengths than triple bonds.


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