Open Question
Complete the exercises below. Indicate the coordination number and the oxidation number of the metal for each of the following complexes: a. Na₂ [CdCl₄] b. K₂ [MoOCl₄] c. [Co(NH₃)₄ Cl₂] Cl
Ch.23 - Transition Metals and Coordination Chemistry
Chapter 23, Problem 29
Complete the exercises below. Polydentate ligands can vary in the number of coordination positions they occupy. In each of the following, identify the polydentate ligand present and indicate the probable number of coordination positions it occupies: a. [Co(NH₃)₄ (o-phen)] Cl₃.
Verified step by step guidance1
Identify the ligands present in the complex. In [Co(NH₃)_4(o-phen)]Cl₃, the ligands are NH₃ (ammonia) and o-phen (ortho-phenanthroline).
Determine which ligand is polydentate. NH₃ is a monodentate ligand, meaning it can only occupy one coordination position. o-phen, however, is a polydentate ligand.
Understand the structure of o-phen (ortho-phenanthroline). It is a bidentate ligand, meaning it can form two bonds with the central metal ion, Co in this case.
Count the coordination positions occupied by o-phen. Since o-phen is bidentate, it occupies two coordination positions.
Summarize the findings: In the complex [Co(NH₃)_4(o-phen)]Cl₃, the polydentate ligand is o-phen, and it occupies two coordination positions.
Related Practice
Open Question
Complete the exercises below. Indicate the coordination number and the oxidation number of the metal for each of the following complexes: e. NH₄[Cr(NH₃)₂(NCS)₄]
Open Question
Complete the exercises below. For each of the following molecules or polyatomic ions, draw the Lewis structure and indicate if it can act as a monodentate ligand, a bidentate ligand, or is unlikely to act as a ligand at all: a. ethylamine, CH₃CH₂NH₂, b. trimethylphosphine, P(CH₃)₃.
Open Question
Complete the exercises below. For each of the following pairs, identify the molecule or ion that is more likely to act as a ligand in a metal complex: a. acetonitrile (CH₃CN) or ammonium (NH₄⁺),
Open Question
Complete the exercises below. Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere: e. bis(ethylenediamine)zinc(II) tetraiodomercurate(II).
Open Question
Complete the exercises below. Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere: e.g., tris(ethylenediamine)rhodium(III), tris(oxalato)cobaltate(III).