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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > January  >
In the Laboratory
Separation and Identification of a Mixture of Group 6 Transition-Metal Carbonyl Compounds Using GC–MS in the General Chemistry Curriculum
Lawrence K. Fong
Department of Chemistry, City College of San Francisco, San Francisco, CA 94112
Cover
January 2004
Vol. 81 No. 1
p. 103
Abstract
The concept of gas chromatography–mass spectroscopy (GC–MS) has been successfully incorporated into our general chemistry curriculum at City College of San Francisco. In particular, students are asked to separate and analyze a mixture of the group 6 transition-metal carbonyl compounds, Cr(CO)6, Mo(CO)6, and W(CO)6. From the mass spectral data, our students are able to determine the atomic mass of the transition metal. In addition, utilizing Mo(CO)6 as an internal standard, our students are able to quantify the quantity of Cr(CO)6 and W(CO)6 in an unknown mixture.
Supplement
Instructions for the students and notes for the instructor are available.
*  Contents JCE2004p0103W.doc (Microsoft Word)
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*  Citation
 Fong, Lawrence K. J. Chem. Educ. 2004 81 103.
*  Keywords
 Chromatography; General Chemistry; Inorganic Chemistry; Instrumental Methods; Isotopes; Laboratory Instruction; Mass Spectrometry; Metal Carbonyls; Quantitative Analysis; Transition Elements
*  History
 Created:
Last Updated:		 December 8, 2003
February 18, 2005
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