554 556 558 560 562 552 (5.4) 553 (0.3) 554 (31.5) 555 (2) 556 (76.9) 557 (5.1) 558 (100) 559 (6.6) 560 (73.2) 561 (4.8) 562 (28.6) 563 (1.8) 564 (4.7) 559 552 557 561 553 555 563 564 565 553 556 559 562 565 Mass M/e bromine atoms are present in a molecule whose molecular ion region a) How is shown below? Please note there is a tiny peak at m/z = = 565. ? b) How many in the attached image carbon atoms are present c) Based on the number of Carbon atoms and Bromine atoms you should be able to calculate the molecular formula assuming that only Hydrogen atoms are present. d) The molecule has only one 1H NMR singlet at 13C peak (each carbon has one H attached) at 4.56 ppm and one 42.7 ppm. PROPOSE A STRUCTURE for this unknown molecule please.

554 556 558 560 562 552 (5.4) 553 (0.3) 554 (31.5) 555 (2) 556 (76.9) 557 (5.1) 558 (100) 559 (6.6) 560 (73.2) 561 (4.8) 562 (28.6) 563 (1.8) 564 (4.7) 559 552 557 561 553 555 563 564 565 553 556 559 562 565 Mass M/e bromine atoms are present in a molecule whose molecular ion region a) How is shown below? Please note there is a tiny peak at m/z = = 565. ? b) How many in the attached image carbon atoms are present c) Based on the number of Carbon atoms and Bromine atoms you should be able to calculate the molecular formula assuming that only Hydrogen atoms are present. d) The molecule has only one 1H NMR singlet at 13C peak (each carbon has one H attached) at 4.56 ppm and one 42.7 ppm. PROPOSE A STRUCTURE for this unknown molecule please.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 20CTQ

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