Problem: Which of the following geometries for the complex ion [Fe(en)Cl4]? are possible?a) linearb) trigonal bipyramidal or square pyramidalc) octahedrald) trigonal planare) tetrahedral or square planar

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Coordination Number

Molecular Geometry

2

linear

3

trigonal planar

4

tetrahedral(d0 or d10), low oxidation states for M

4

square planar (d8)

5

trigonal bipyramidal

5

square pyramidal

6

octahedral

7

pentagonal bipyramid

8

square antiprism

8

dodecahedron

9 and above

more complicated structures



The coordination number of the central metal ion or atom is the number of donor atoms bonded to it.


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Problem Details

Which of the following geometries for the complex ion [Fe(en)Cl4]? are possible?

a) linear

b) trigonal bipyramidal or square pyramidal

c) octahedral

d) trigonal planar

e) tetrahedral or square planar

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