The Foundations of Chemistry

980 CHAPTER 25: Coordination Compounds

TABLE 25-7 Idealized Geometries for Various Coordination Numbers

Coordination Number Geometry Examples Model

2 [Ag(NH 3 ) 2 ]


[Ag(NH 3 ) 2 ]



[Cu(CN) 2 ]

[Zn(CN) 4 ]^2 

[Cd(NH 3 ) 4 ]^2 

(^4) [Cd(NH 3 ) 4 ] 2

[Ni(CN) 4 ]^2 
4 [Cu(OH^2 )^4 ]
2

[Pt(NH 3 ) 2 Cl 2 ] [Cu(OH
2 ) 4 ]
2

[Fe(CO) 5 ]
[CuCl 5 ]^3 
5
[Fe(CO) 5 ]
[Ni(CN) 5 ]^3 
[MnCl 5 ]^3 
5
[Fe(CN) 6 ]^4 
[Fe(OH 2 ) 6 ]^2

6 [Fe(CN) 6 ]^4 
LML
linear
L
M
L L
L
tetrahedral
M
L L
L L
square planar
trigonal bipyramidal
L
L
L
L
L
M
L
L
L L
L M
square pyramidal
L
octahedral
L
L L
L
L
M
[MnCl 5 ]^3