Ionic radii (Shannon) for 8-coordinate M(I) ion

These are Shannon ionic radii.

Image showing periodicity of the chemical elements for ionic radii (Shannon) for 8-coordinate M(I) ion in a periodic table cityscape style.

Image showing periodicity of the chemical elements for ionic radii (Shannon) for 8-coordinate M(I) ion in a periodic table heatscape style.

Image showing periodicity of the chemical elements for ionic radii (Shannon) for 8-coordinate M(I) ion in a spiral periodic table heatscape style.

Image showing periodicity of the chemical elements for ionic radii (Shannon) for 8-coordinate M(I) ion in a 3D spiral periodic table column style.

Image showing periodicity of the chemical elements for ionic radii (Shannon) for 8-coordinate M(I) ion in a 3D periodic table column style.

Units

pm

Notes

The "effective ionic radii" quoted here assume that the ionic radius of F^- is 133 pm and that of O^2- 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 ionic radii.

You can look at visual representations of the data for different coordination and oxidation numbers using the following links,

M(-III)
- Ionic radii (Shannon) for tetrahedral M(-III) ion
- Ionic radii (Shannon) for octahedral M(-III) ion
M(-II)
M(-I)
M(I)
M(II)
M(II)
M(III)
M(IV)
M(VI)
M(VII)
- Ionic radii (Shannon) for tetrahedral M(VII) ion
- Ionic radii (Shannon) for octahedral M(VII) ion
M(VIII)
- Ionic radii (Shannon) for tetrahedral M(VIII) ion
- Ionic radii (Shannon) for octahedral M(VIII) ion

Literature sources

R.D. Shannon, Acta Cryst., 1976, A32, 751.
R.D. Shannon and C.T. Prewitt, Acta Cryst., 1969, B25, 925.
R.D. Shannon and C.T. Prewitt, Acta Cryst., 1970, B26, 1046.
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.

Explore the element of your choice through this periodic table.
1	2		3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
1 H																		2 He
3 Li	4 Be												5 B	6 C	7 N	8 O	9 F	10 Ne
11 Na	12 Mg												13 Al	14 Si	15 P	16 S	17 Cl	18 Ar
19 K	20 Ca		21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
37 Rb	38 Sr		39 Y	40 Zr	41 Nb	42 Mo	43 Tc	44 Ru	45 Rh	46 Pd	47 Ag	48 Cd	49 In	50 Sn	51 Sb	52 Te	53 I	54 Xe
55 Cs	56 Ba	*	71 Lu	72 Hf	73 Ta	74 W	75 Re	76 Os	77 Ir	78 Pt	79 Au	80 Hg	81 Tl	82 Pb	83 Bi	84 Po	85 At	86 Rn
87 Fr	88 Ra	**	103 Lr	104 Rf	105 Db	106 Sg	107 Bh	108 Hs	109 Mt	110 Ds	111 Rg	112 Cn	113 Nh	114 Fl	115 Mc	116 Lv	117 Ts	118 Og

*Lanthanoids		*	57 La	58 Ce	59 Pr	60 Nd	61 Pm	62 Sm	63 Eu	64 Gd	65 Tb	66 Dy	67 Ho	68 Er	69 Tm	70 Yb
**Actinoids		**	89 Ac	90 Th	91 Pa	92 U	93 Np	94 Pu	95 Am	96 Cm	97 Bk	98 Cf	99 Es	100 Fm	101 Md	102 No