Ionic radii (Shannon) for octahedral M(VI) ion

These are Shannon ionic radii.

image showing Ionic radii (Shannon) for octahedral M(VI) ion: line graph  periodic periodicity in a line graph for the chemical elements

Units

pm

Notes

The "efective ionic radii" quoted here assume that the ionic radius of F- is 133 pm and that of O2- is 140 pm. Values depend upon the coordination number and for d-block metals whether or not the metal is in a high or low spin state.

Older "crystal ionic radii" are based upon a radius of six-coordinate F- = 119 pm and are 14-18% larger than effective ioinc radii.

Literature sources

  1. R.D. Shannon, Acta Cryst., 1976, A32, 751.
  2. R.D. Shannon and C.T. Prewitt, Acta Cryst., 1969, B25, 925.
  3. R.D. Shannon and C.T. Prewitt, Acta Cryst., 1970, B26, 1046.
  4. J.E. Huheey, E.A. Keiter, and R.L. Keiter in Inorganic Chemistry : Principles of Structure and Reactivity, 4th edition, HarperCollins, New York, USA, 1993.

WebElements Shop

WebElements now has an online chemistry shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.

WebElements poster Periodic table t-shirts Periodic table mouse mats Molymod molecular model kits Chemistry educational resources