Which structure is correct according to its name?

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Discussion Overview

The discussion revolves around the correct structural representation of the chemical compound Bis(2-ethylhexyl) 1,6-hexan-1,6-diylbiscarbamate. Participants explore the appropriate SMILES notation and structural interpretations of the compound, focusing on its chemical composition and arrangement.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant presents two SMILES strings as possible representations of the compound.
  • Another participant describes the compound as a bis(2-ethylhexyl) carbamate, explaining that it consists of two urethane groups attached to a nitrogen, separated by an n-hexane chain.
  • A later reply clarifies that the notation provided is not a SMILES string but an attempt to represent the structure based on the original nomenclature.
  • Participants discuss the need for accurate structural representation to confirm understanding of the compound's structure.

Areas of Agreement / Disagreement

There is no consensus on which SMILES string correctly represents the compound, and participants express differing interpretations of the structure based on their understanding of the nomenclature.

Contextual Notes

Participants note limitations in their ability to interpret and visualize the structures due to notation differences and the lack of a clear SMILES representation.

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HI,

A chemical has a name of Bis(2-ethylhexyl) 1,6-hexan-1,6-diylbiscarbamate, I wonder which structure is correct (sorry it seems like I can only paste smile strings, You can see the structures by depicting them on http://www.daylight.com/daycgi_tutorials/depict.cgi):

1.CCCCC(CC)CC(CCCCCOC(N)=O)(CC(CC)CCCC)OC(N)=O

2.C(OC(C[C@@H](CC)CCCC)(C[C@@H](CC)CCCC)CCCCCOC(=O)N)(=O)N

Thanks a lot!
 
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I can't follow your link and I definitely can't make out your notation so, I'll try to answer it without referring to your 2 choices.

It is a bis(2-ethylhexyl) carbamate compound. That part structure is a urethane with two ethylhexyl groups attached to the nitrogen of the urethane.

It is also a bis-carbamate, so there are two of these bis(2-ethylhexyl)-substituted urethanes in the compound. They are separated by an n-hexane chain.

Soooo... if I were to attempt your notation, I would say it was:

(CC(CC)CCCC)2[\sub]NC(=O)O(CCCCCC)OC(=O)N(CC(CC)CCCC)2[\sub]

which isn't one of your choices (I think).

Good luck with it.
 
Hi,

Thank you very much for your help!

I couldn't retrieve the structure for (CC(CC)CCCC)2[\sub]NC(=O)O(CCCCCC)OC(=O)N(CC(CC)CCCC)2[\sub], is this a smile string? Could you please let me know how I can get the structure?

I kind of understand what you mean, just want to double check with the structure to make sure my understanding is correct.
 
It isn't a smile string. It is my attempt to copy what I believed to be your nomenclature.

Note: Where you see "(CC(CC)CCCC)2NC(C=O)..." you should replace with "(CC(CC)CCCC)2NC(C=O)..."


edit: Hmmmm... now the subscript is working!

Here's the SMILES code:

CCCCC(CC)CN(CC(CC)CCCC)C(=O)OCCCCCCOC(=O)N(CC(CC)CCCC)CC(CC)CCCC
 
Last edited:

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