02052010 - CH 310N MWF 8:00 Lecture 8 F Reading Assignment Sections 15.2 15.3 Textbook Problems No new problems Graded Homework HW#04 deadline =

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CH 310N – MWF 8:00 – Lecture 8 – F 2/5/2010 Graded Homework : HW#04 deadline = 2:00 p.m. TODAY!!! HW#05 deadline = 4:00 p.m. on Tu 2/9 Reading Assignment : Sections 15.2, 15.3 If you have an excusable conflict for ANY of the three midterm exams, the deadline to sign up to take a conflict exam is 5:00 p.m. TODAY!!! Textbook Problems : No new problems… Last Time : 13 C NMR (continued…) Solving spectroscopy problems If you have an iClicker remote, you can use it to “sign in” at the Friday afternoon seminars. Bring it and use it today, but also sign the attendance sheet – I want to make sure that the clicker approach works! Today : Solving spectroscopy problems (continued…) MRI Organometallic compounds – Grignard reagents and organolithium compounds
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We have now accounted for everything, but remember, the formula is C 8 H 18 O 2 What is the structure of the molecule? CH 3 C CH 3 CH 2 OH CH 2 C HO CH 3 CH 3 Because of symmetry, we see fewer 13 C NMR signals than the actual number of C atoms. Why no splitting observed here??? Spin-spin splitting is not observed when the adjacent protons have the same chemical shift Another example : A compound with the molecular formula C 4 H 9 Br has the following spectral data: 1 H NMR: δ 3.30 (d, 2H, J = 6.1 Hz), 1.97 (m, 1H), 1.03 (d, 6H, J = 6.7 Hz)
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This note was uploaded on 04/07/2010 for the course CH 310n taught by Professor Iverson during the Spring '08 term at University of Texas at Austin.

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02052010 - CH 310N MWF 8:00 Lecture 8 F Reading Assignment Sections 15.2 15.3 Textbook Problems No new problems Graded Homework HW#04 deadline =

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