Question

Question #7520f

Answer 1

No isomers are possible with any of these examples.

Explanation:

1. The silver ammine complex is linear, and cannot support isomerism. 2. 4. Likewise `[Co(NH_3)_5NO_2]^(2+)`, and `[Co(NH_3)_5Cl]^(2+)`, are octahedral (`[ML_5X]`) with no isomerism possible. 3. A square planar platinum(II) complex, i.e. `ML_2X_2`, would normally support `cis` `/` `trans` isomerism, however, here the ligand is ethylenediamine, a chelating ligand that must coordinate in a `cis` fashion, so only the `cis` isomer is possible.

Would `[Co(NH_3)_4Cl_2]^+` support isomerism? Why or why not?

Edited to add, `[Co(NH_3)_5NO_2]^(2+)`, could possibly support linkage isomerism, should the nitro ligand coordinate through the `N` OR the `O` donor. This is an undergraduate treatment, and unsuitable for A level.