Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere.
(b) bis(bipyridyl)cadmium(II) chloride
(c) potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)
(d) cesium diamminetetracyanochromate(III)
(e) tris(ethylenediammine)rhodium(III) tris(oxalato)- cobaltate(III)
Do you have the rules for doing this?
nope. none of the organic chem molecules exist in the textbook.
For the first one, type in bipyridine in google and go from there.
[Cd(Py)2]Cl2. You can put in the CxHyNz that goes with Py.
Do the same for the others.
To write the formula for each of the given compounds, we need to identify the individual components and their coordination spheres and then combine them accordingly.
(b) bis(bipyridyl)cadmium(II) chloride:
- The coordination sphere is "bis(bipyridyl)cadmium(II)", which means there are two bipyridyl ligands coordinated with a cadmium(II) ion.
- The chloride ion is not part of the coordination sphere, so it is written separately.
- The formula is [Cd(bipyridyl)2]Cl2.
(c) potassium tetrabromo(ortho-phenanthroline)- cobaltate(III):
- The coordination sphere is "tetrabromo(ortho-phenanthroline)-cobaltate(III)", which means there are four bromo ligands and one ortho-phenanthroline ligand coordinated with a cobalt(III) ion.
- The potassium ion is not part of the coordination sphere, so it is written separately.
- The formula is K3[Co(ortho-phenanthroline)Br4].
(d) cesium diamminetetracyanochromate(III):
- The coordination sphere is "diamminetetracyanochromate(III)", which means there are two ammine ligands and four cyanide ligands coordinated with a chromium(III) ion.
- The cesium ion is not part of the coordination sphere, so it is written separately.
- The formula is Cs3[Cr(CN)4(NH3)2].
(e) tris(ethylenediamine)rhodium(III) tris(oxalato)-cobaltate(III):
- There are two coordination spheres in this compound:
- The first one is "tris(ethylenediamine)rhodium(III)", which means there are three ethylenediamine ligands coordinated with a rhodium(III) ion.
- The second one is "tris(oxalato)-cobaltate(III)", which means there are three oxalate ligands coordinated with a cobalt(III) ion.
- Both coordination spheres are written separately.
- The formula is [Rh(en)3][Co(ox)3].