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CH1012
4-COORDINATE COMPLEXES
Four-coordinate complexes:   
• Square planar complexes possess either
a plane of symmetry, a 2-fold rotation axis or are superimposable and therefore
will not be chiral.
• Tetrahedral complexes will be chiral if
all ligands are different.
eg.
[Zn(H2O)(NH3)(OH)Cl]
Square plane is plane of symmetry in MABCD