Chemical Forums

Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: cabaal on September 15, 2010, 05:57:21 PM

Title: Draw a structure given a molecular formula?
Post by: cabaal on September 15, 2010, 05:57:21 PM

This is from a multi-part problem. I'm asked to draw a structure that has two tertiary carbons and the rest secondary carbons for the formula C₈H₁₄. I've been trying for the past half an hour but I can't figure it out. Could someone give me a hint? My hydrogens are always off.

Title: Re: Draw a structure given a molecular formula?
Post by: Doc Oc on September 15, 2010, 07:00:09 PM

2 things:

1) All secondary carbons should be a big hint to you.  That restricts the structure in a significant way.

2) If you calculate the degrees of unsaturation you get 1.  Based on the above information that leaves pretty much one option.

Title: Re: Draw a structure given a molecular formula?
Post by: cabaal on September 15, 2010, 08:07:19 PM

I've got it. Thank you.

Title: Re: Draw a structure given a molecular formula?
Post by: AWK on September 16, 2010, 03:43:39 AM

Quote from: J-bone on September 15, 2010, 07:00:09 PM

2 things:

1) All secondary carbons should be a big hint to you.  That restricts the structure in a significant way.

2) If you calculate the degrees of unsaturation you get 1.  Based on the above information that leaves pretty much one option.