Posts Tagged ‘Nitrogen’

First, hexacoordinate carbon – now pentacoordinate oxygen?

Saturday, March 25th, 2017
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The previous post demonstrated the simple iso-electronic progression from six-coordinate carbon to five coordinate nitrogen. Here, a further progression to oxygen is investigated computationally.

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Anomeric effects at carbon involving lone pairs originating from one or two nitrogens.

Friday, July 8th, 2016
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The previous post looked at anomeric effects set up on centres such as B, Si or P, and involving two oxygen groups attached to these atoms. Here I vary the attached groups to include either one or two nitrogen atoms.[1]

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References

  1. Henry Rzepa., "Anomeric effects at carbon, involving lone pairs originating from one or two nitrogens", 2016. http://dx.doi.org/10.14469/hpc/936