Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere.
A) bis(bipyridyl)cadmium(II) chloride
B)potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)
Don't change screen names.
Cd(bipy)2Cl2
It ain't 4
[Cd(bipy)_2]Cl_
To write the formula for each of the compounds, we need to understand the coordination complexes involved. Coordination complexes are formed when a central metal ion or atom is surrounded by ligands (neutral or charged molecules or ions) that donate electron pairs to the metal.
A) To write the formula for bis(bipyridyl)cadmium(II) chloride, we need to determine the coordination complex's central metal ion, ligands, and any counterions.
1. Central Metal Ion: The compound contains the cadmium(II) ion, which is denoted as Cd(II).
2. Ligands: The compound has bis(bipyridyl) as the ligand. The prefix "bis" indicates that there are two bipyridyl ligands present. The ligand bipyridyl is denoted as bpy.
3. Counterions: The compound also contains chloride ions, denoted as Cl-.
Putting it all together, the formula for bis(bipyridyl)cadmium(II) chloride is written as [Cd(bpy)2]Cl2. The square brackets indicate the coordination sphere, containing the central metal ion and ligands, while the counterions are indicated outside the brackets.
B) To write the formula for potassium tetrabromo(ortho-phenanthroline)-cobaltate(III), we follow the same steps as above.
1. Central Metal Ion: The compound contains the cobalt(III) ion, which is denoted as Co(III).
2. Ligands: The compound has tetrabromo(ortho-phenanthroline) as the ligand. The prefix "tetra" indicates that there are four ligands present. The ligand ortho-phenanthroline is denoted as o-phen.
3. Counterions: The compound contains a potassium ion, denoted as K+.
The formula for potassium tetrabromo(ortho-phenanthroline)-cobaltate(III) is written as [K][Co(o-phen)4Br4]. In this case, the coordination sphere consists of the central metal ion and ligands, while the potassium ion serves as the counterion outside the brackets.
Remember to use square brackets to indicate the coordination sphere and include any counterions outside the brackets when writing the formula for coordination compounds.