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It has been reported that 5-coordinate geometries are possible and stable for Zn(II) porphyrin complexes. How do these complexes form and why are they stable when other 5-coordinate geometries of Zn(II) and other d10 metals are not stable?

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    $\begingroup$ First off, who reported it? Second, is this really any different from PCl5 or SF6? $\endgroup$
    – Oscar Lanzi
    Apr 24, 2021 at 9:42
  • $\begingroup$ See for example 10.1021/ic50194a058 $\endgroup$
    – Tiocfaidh
    Apr 24, 2021 at 13:31
  • $\begingroup$ Honestly I don't know if its any different, I was hoping someone could give a quick rundown on how ligand field theory works in the d10 case where crystal field theory seems to suggest ligation would not occur, with a focus on how 5 coordinate geometries can emerge. $\endgroup$
    – Tiocfaidh
    Apr 24, 2021 at 13:33

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