This assignment would make a good choice for a first attempt at actually having a discussion on primary literature articles since these are two short communications. They also touch on two important applications of coordination chemistry so might be appropriate early in a course, namely modeling biological systems and non-linear optical applications.
Could either grade participation in an in class discussion or collect the answers and grade them.
For this assignment, I like to break up a reasonably sized class into two groups, focusing their attention on one of the communications, but reading both of them. You could have the students complete the questions for one or both of the papers.
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