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Inorganic Chemistry |
Experiment 2 |
Spring 2024 |
Characterization Techniques-Literature Search
Introduction
There are many ways to characterize a reaction
product. It may be as simple as taking a melting point or as complex as
doing Mossbauer Spectroscopy. Common characterization techniques in Inorganic
Chemistry include infra-red (IR), electronic (UV-visible) and nuclear magnetic
resonance (NMR) spectroscopy. In this lab, we will begin a preliminary
examination of these methods of sample identification.
With any research project, it is important that literature
searches are used to determine previous work in the area of interest and to
help identify new compounds by observing the results of similar measurements on
similar compounds. Fortunately for the current class of chemistry majors,
many of these results have already been tabulated.
For this lab assignment, you will become familiar with
the ASU library, you will find important information related to IR and NMR peak
assignments and you will search the internet for information concerning IR,
UV/visible, and NMR spectroscopy.
Library Assignment
It is important to know your way around the library.
In this portion of the assignment, you are to find the location of the
following:
a) main desk
b) chemistry reference material (take a photograph and include in
your lab report the cover of one chemistry reference book of your choosing)
c) chemistry related books
d) inter-library loan
Be sure to include exactly where each of these sections are located, not just the floor. If it is on the north side of the 4th floor, a quarter of the way from the east wall, tell me. You may want to include a map. For your reference, Wilson and the Administration buildings are north of the library. Take a photograph and include in your lab report the cover of one chemistry reference book of your choosing.
IR and NMR correlation tables
The identification of a product by either of these
techniques depends on the position of the peaks in the spectrum. The peak
position depends on the functional group (IR) or the chemical environment of
the observed nuclei (NMR). You are to find and summarize in a table the
characteristic infrared absorption frequencies for a) typical organic groups
and b) typical inorganic groups, and c) proton NMR chemical shift values for
typical organic protons. (List a minimum of 10 groups/ a maximum of 20 groups
for each table). Be sure to reference your sources.
Once the correlation tables have been completed, you
are to copy an IR spectrum of an organic compound from the Spectral Data base
System (http://sdbs.db.aist.go.jp/sdbs/cgi-bin/cre_index.cgi?lang=eng) and assign the
peaks. The compound must have at least one functional group. On the
same compound, find the NMR spectrum and assign the peaks based on the chemical
shift table prepared from above.
Internet Search
Using one of the search engines from experiment 1, search
the internet for companies which deal with IR, NMR and visible
spectroscopy. Record names and websites for all companies in each of the three categories (minimum of 4, 10 maximum).
Journal Search
Find five journal titles related to Inorganic Chemistry. List the publisher and the impact factor for each. Copy the title page only of one article from one of the five journals you have listed and include the copy with the report.
Write-up
The report must follow the guidelines on the Lab Report
page. The minimum report should include the results of your library
searches (locations), IR and NMR correlation tables and spectra, a brief
description of the spectra and a summary of the internet results. The report
will be due by 5:00 pm on Friday, Feb. 23, 2024. This lab will be worth
30 points of your lab grade. No late reports
will be accepted. Note: do not wait until the day before the
lab report is due to start the experiment.