April 2021 update: I am in the process of expanding this laboratory and have now recorded videos, linked below, on youtube. There is a video of general air sensitive reaction setup, the synthesis and isolation of the mesitylene and the N,N-diethylaniline derivatives. I also have better quality data which I will add here as well.
The synthesis of (arene)Cr(CO)3 and (arene)Mo(CO)3 complexes are fairly standard experiments in the organometallic curriculum. I present here some student data and experimental descriptions of real procedures carried out at Harvey Mudd College over the previous two to three years. The word document has the answers in it so it is posted under "faculty resources" but the raw data (pdf or png form) is presented for those who need data to support their distance learning classrooms in the Spring of 2020. I also include an input file for Mo(benzene)(CO)3 should you desire to use WebMO or Gaussian to carry out some calculations.
there was a minor mistake in the reported integrations for one of the complexes in the original faculty only file; it has been fixed in the v2 version.
|Gaussian input file for benzene tricarbonyl molybdenum(0)||1.41 KB|
|IR of Cr(N,N-dimethylaniline)(CO)3||814.74 KB|
|MS of Cr(N,N-dimethylaniline)(CO)3||1001.53 KB|
|NMR of Cr(N,N-dimethylaniline)(CO)3||749.07 KB|
|IR of Cr(mesitylene)(CO)3||33.1 KB|
|MS of Cr(mesitylene)(CO)3||25.47 KB|
|NMR of Cr(mesitylene)(CO)3||32.57 KB|
|IR of Cr(N,N-diethylaniline)(CO)3||354.77 KB|
|MS of Cr(N,N-diethylaniline)(CO)3||383.25 KB|
|NMR of Cr(N,N-diethylaniline)(CO)3||310.2 KB|
|IR of Mo(N,N-diethylaniline)(CO)3||1.3 MB|
|MS of Mo(N,N-diethylaniline)(CO)3||1.3 MB|
|NMR of Mo(N,N-diethylaniline)(CO)3||1.3 MB|
|IR of Mo(N,N-dimethylaniline)(CO)3||277.87 KB|
|MS of Mo(N,N-dimethylaniline)(CO)3||227.1 KB|
|MS of phosphine reaction product||1.32 MB|
|1H NMR Of phosphine reaction product||1.33 MB|
|31P NMR Of phosphine reaction product||1.56 MB|
|IR Of phosphine reaction product||1.32 MB|
Students will interpret provided data to write their own experimental sections for molecules they were unable to prepare in the lab. The guided inquiry part allows students to use data to predict the outcome of a chemical reaction.
be able to view PDF/PNG files
I have not used this yet but will be using it spring 2020.
i have no idea.... yet! (growth mindset!)
I will report this later this spring.