Lab 1 Trica FINAL
GROUP MEMBERS: VIMAL SIEWNARINE - #52844 JASON MATHURA - #60927 FIDEL MENDOZA- #56834 BRAD NANDO- # VIMAL BALAY - #52555 CRISTINA LUTCHMAN -#52516
LAB #1, #2, #3, #4
CHEM 2006 -ANALYTICAL INSTRUMENTATION
LECTURER – MRS. TRICIA JONES
LAB 1
TITLE: Organic Compound Identification Using Infrared Spectroscopy
Aim: To identify the functional groups in organic compounds using infrared spectra.
APPARATUS AND REAGENTS:
Nicolet 380FTIR,
HATR Accessory (liquid crystal plates)
Reagents ( Methanol, Benzene and Cyclohexane, Cyclohexene)
THEORY:
An important tool of the organic chemist is Infrared Spectroscopy, or "IR". IR spectra are acquired on a special instrument, called an IR spectrometer. IR is used to gather information about compound 's structure, assess its purity, and sometimes to identify it.
Infrared radiation is that part of the electromagnetic spectrum between the visible and microwave regions. Infrared radiation is absorbed by organic molecules and converted into energy of molecular vibration, either stretching or bending. Different types of bonds, and thus different functional groups, absorb infrared radiation of different wavelengths. An IR spectrum is a plot of wavenumber (X-axis) vs percent transmittance (Y-axis).
Most functional groups give rise to bands in particular regions of the spectrum. The region from 4000-1300 cm-1 is particularly useful for identifying the presence of specific functional groups.
PROCEDURE:
As seen in lab script.
RESULTS/ DICUSSION:
There were three unknowns that were identified. These were unknown A, unknown B and unknown C.
1. Unknown A – Benzene (C6H6)- The aromatic CH stretch appears at 3100 -3000 cm-1 and the CC stretch is at about 1500 cm-1. This will be shown on the waveform.
2. Unknown B – Cyclohexene (C6H10) - The main band is a strong CH stretch from CH2 groups at about 3000 cm-1. The CH2 bend appears at about 1450 cm-1. The CH stretch for
LAB #1, #2, #3, #4
CHEM 2006 -ANALYTICAL INSTRUMENTATION
LECTURER – MRS. TRICIA JONES
LAB 1
TITLE: Organic Compound Identification Using Infrared Spectroscopy
Aim: To identify the functional groups in organic compounds using infrared spectra.
APPARATUS AND REAGENTS:
Nicolet 380FTIR,
HATR Accessory (liquid crystal plates)
Reagents ( Methanol, Benzene and Cyclohexane, Cyclohexene)
THEORY:
An important tool of the organic chemist is Infrared Spectroscopy, or "IR". IR spectra are acquired on a special instrument, called an IR spectrometer. IR is used to gather information about compound 's structure, assess its purity, and sometimes to identify it.
Infrared radiation is that part of the electromagnetic spectrum between the visible and microwave regions. Infrared radiation is absorbed by organic molecules and converted into energy of molecular vibration, either stretching or bending. Different types of bonds, and thus different functional groups, absorb infrared radiation of different wavelengths. An IR spectrum is a plot of wavenumber (X-axis) vs percent transmittance (Y-axis).
Most functional groups give rise to bands in particular regions of the spectrum. The region from 4000-1300 cm-1 is particularly useful for identifying the presence of specific functional groups.
PROCEDURE:
As seen in lab script.
RESULTS/ DICUSSION:
There were three unknowns that were identified. These were unknown A, unknown B and unknown C.
1. Unknown A – Benzene (C6H6)- The aromatic CH stretch appears at 3100 -3000 cm-1 and the CC stretch is at about 1500 cm-1. This will be shown on the waveform.
2. Unknown B – Cyclohexene (C6H10) - The main band is a strong CH stretch from CH2 groups at about 3000 cm-1. The CH2 bend appears at about 1450 cm-1. The CH stretch for
References: