Forums
Does anyone have good reliable syntheses for preparing both the cis- and trans- complexes of a square planar metal with the same ligands that I could use in the teaching lab?
I had 2 students try to make cis- and trans-platin this year, which you think would be easy, but the data are inconclusive. I would especially like a prep that involves phosphines with different phosphorus environments so that I could show them cis/trans coupling constants. But maybe not in the same experiment.
Basically, this is a plea from an early metal chemist for some help finding bulletproof late metal preps.
Adam
In reply to Mixed or separate? by Nancy Williams / Scripps College, Pitzer College, Claremont McKenna College
In reply to reference? by Maggie Geselbracht / Reed College
In reply to Mixed or separate? by Nancy Williams / Scripps College, Pitzer College, Claremont McKenna College
Adam,
You might try [Co(en)2Cl2] . Obviously not any phosphines but beautiful colors green and purple.
There are Inorg. Synth. preps for both of these isomers.
Hmm, Maybe I will look for a dppe version of the above complexes.
Kurt
In reply to cis and trans isomers. by Kurt Birdwhistell / Loyola University New Orleans
thanks for the suggestion. I really would like to do a late metal with phosphines though, to see Pt satellites and the different 31P NMR signals. That and we already have 2 Co labs, but I am thinking about nixing Co(en)3 for next year since it just takes too long. I'll look and see what the preps for the cis- and trans- dichlorides looks like.
Adam