This is a literature discussion regarding electron counting.  It involves several opportunities for students to use CBC to determine electron counts themselves.  Then, it demonstrates the first case of a 21-electron complex, which leads to great discussion regarding the 18-electron rule.  Throughout the discussion, students are introduced to many structural and spectrochemical analyses, some of which may be new to them.

This literature discussion was created on invitation as part of a broad collection of learning objects celebrating Spring 2024 ACS award winners conducting research in Inorganic Chemistry. This learning object is in celebration of Prof. Christopher J.

This literature discussion LO was created for the ACS National Award Winners 2024 collection. Dr. Herbert Roesky was the recipient of the 2024 Frederic Stanley Kipping Award in Silicon Chemistry. This LO is based on the article "Lewis Base Stabilized Dichlorosilylene" published in Angewandte Chemie 2009, 121, 5793-5796.

Guided literature reading of Angew. Chem. Int. Ed. 2021, 60, 13065-13072: Stabilization of the Elusive 9-Carbene-9-Borafluorene Monoanion.

There are three components of the assignment:

This literature discussion on the Hot Paper communication in Chemistry, A European Journal; highlights the first examples of borepinium and borfluorenium cations whose optical properties can be tuned and also the very first reported example of thermochromism in these cationic species. R. J. Gilliard, Chem. Eur. J. 2019, 25, 12512. https://doi.org/10.1002/chem.201903348