Henry Rzepa's Blog Chemistry with a twist

November 1, 2016

The largest C-C-C angle?

Filed under: crystal_structure_mining,Interesting chemistry — Tags: , , — Henry Rzepa @ 10:55 am

I am now inverting the previous question by asking what is the largest angle subtended at a chain of three connected 4-coordinate carbon atoms? Let’s see if further interesting chemistry can be unearthed.


September 6, 2015

Deviations from tetrahedral four-coordinate carbon: a statistical exploration.

An article entitled "Four Decades of the Chemistry of Planar Hypercoordinate Compounds"[1] was recently reviewed by Steve Bacharach on his blog, where you can also see comments. Given the recent crystallographic themes here, I thought I might try a search of the CSD (Cambridge structure database) to see whether anything interesting might emerge for tetracoordinate carbon.



  1. L. Yang, E. Ganz, Z. Chen, Z. Wang, and P.V.R. Schleyer, "Four Decades of the Chemistry of Planar Hypercoordinate Compounds", Angewandte Chemie International Edition, vol. 54, pp. 9468-9501, 2015. http://dx.doi.org/10.1002/anie.201410407

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