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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: choomah69 on June 25, 2016, 02:55:03 PM

Title: Structure of Molybdenum Disulphide and Trigonal prismatic complexes
Post by: choomah69 on June 25, 2016, 02:55:03 PM

I am a college student and I was looking at how octahedral complexes can undergo the bailar twist during racemisation where the intermediate in the bailar twist is the trigonal prismatic arrangement.

How can these complexes be defined as trigonal prismatic if that arrangement is only an intermediate? I assumed that the octahedral shapes of both enantiomers occurred more often.

Furthermore, how does molybdenum disulphide have a trigonal primsatic geometry when it exists as a giant covalent structure and not an individual complex? Is that just to do with VSEPR?

Title: Re: Structure of Molybdenum Disulphide and Trigonal prismatic complexes
Post by: AWK on June 25, 2016, 03:29:51 PM

Concerning MoS2. Can you see a trigonal arrangement of single layer

http://www.nature.com/ncomms/journal/v3/n6/fig_tab/ncomms1882_F1.html
Check complete crystal structure.