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http://www.webelements.com/webel ... /text/Mn/radii.html
Radii
There are several ways to define radius for atoms and ions. Follow the appropriate hyperlinks for literature references and definitions of each type of radius. All values of radii are given in pm (picometres, or picometers in USA). Conversion factors are:
1 pm = 1 x 10-12 metre (meter)
100 pm = 1 Ångstrom
1000 pm = 1 nanometre (nm, nanometer)
MnMn distance in the element
One measure of size is the element-element distance within the element and this length is given here.
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Bond length in MnMn [/pm]: 273.1
Neutral radii
The size of neutral atoms depends upon the way in which the measurement is made and the environment. Follow the appropriate hyperlinks for definitions of each radius type. The term "atomic radius" is not particularly helpful although its use is widespread. The problem is its meaning, which is clearly very different in different sources and books. Two values are given here, one is based upon calculations and the other upon observation - follow the appropriate link for further details.
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Atomic radius (empirical) [/pm]: 140
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Atomic radius (calculated) [/pm]: 161
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Covalent radius (empirical) [/pm]: 139
View... Interactive Cityscape Cylinders Line Balls Bar Intensity van der Waals radius [/pm]: no information
Ionic radii
This table gives some ionic radii. In this table, geometry refers to the arrangment of the ion's nearest neighbours. Size does depend upon geometry and environment. For electronic configurations, where it matters, the values given for octahedral species are low spin unless stated to be high spin. The terms low spin and high spin refer to the electronic configurations of particular geomtries of certain d-block metal ions. Further information is available in inorganic chemistry textbooks, usually at Level 1 or First Year University level. For definitions of ionic radius and further information, follow the hypertext link.
Ion Coordination type Radius / pm
Mn(II) 4-coordinate, tetrahedral 80
Mn(IV) 4-coordinate, tetrahedral 53
Mn(V) 4-coordinate, tetrahedral 47
Mn(VI) 4-coordinate, tetrahedral 39.5
Mn(VII) 4-coordinate, tetrahedral 39
Mn(II) 6-coordinate, octahedral 81
Mn(II) 6-coordinate, octahedral, high spin 97.0
Mn(III) 6-coordinate, octahedral 72
Mn(III) 6-coordinate, octahedral, high spin 78.5
Mn(IV) 6-coordinate, octahedral 67.0
Mn(VII) 6-coordinate, octahedral 60
Mn(II) 8-coordinate 110
Pauling ionic radii
Ion Pauling radius / pm
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Mn(I) 75
Mn(VII) 46
http://www.webelements.com/webel ... /text/Co/radii.html
Radii
There are several ways to define radius for atoms and ions. Follow the appropriate hyperlinks for literature references and definitions of each type of radius. All values of radii are given in pm (picometres, or picometers in USA). Conversion factors are:
1 pm = 1 x 10-12 metre (meter)
100 pm = 1 Ångstrom
1000 pm = 1 nanometre (nm, nanometer)
CoCo distance in the element
One measure of size is the element-element distance within the element and this length is given here.
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Bond length in CoCo [/pm]: 250.6
Neutral radii
The size of neutral atoms depends upon the way in which the measurement is made and the environment. Follow the appropriate hyperlinks for definitions of each radius type. The term "atomic radius" is not particularly helpful although its use is widespread. The problem is its meaning, which is clearly very different in different sources and books. Two values are given here, one is based upon calculations and the other upon observation - follow the appropriate link for further details.
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Atomic radius (empirical) [/pm]: 135
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Atomic radius (calculated) [/pm]: 152
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Covalent radius (empirical) [/pm]: 126
View... Interactive Cityscape Cylinders Line Balls Bar Intensity van der Waals radius [/pm]: no information
Ionic radii
This table gives some ionic radii. In this table, geometry refers to the arrangment of the ion's nearest neighbours. Size does depend upon geometry and environment. For electronic configurations, where it matters, the values given for octahedral species are low spin unless stated to be high spin. The terms low spin and high spin refer to the electronic configurations of particular geomtries of certain d-block metal ions. Further information is available in inorganic chemistry textbooks, usually at Level 1 or First Year University level. For definitions of ionic radius and further information, follow the hypertext link.
Ion Coordination type Radius / pm
Co(II) 4-coordinate, tetrahedral 72
Co(IV) 4-coordinate, tetrahedral 54
Co(II) 6-coordinate, octahedral 79
Co(II) 6-coordinate, octahedral, high spin 88.5
Co(III) 6-coordinate, octahedral 68.5
Co(III) 6-coordinate, octahedral, high spin 75
Co(IV) 6-coordinate, octahedral, high spin 67
Co(II) 8-coordinate 104
Pauling ionic radii
Ion Pauling radius / pm
View... Interactive Cityscape Cylinders Line Balls Bar Intensity Co(I) no information |
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