Concept explainers
Interpretation:
The chemical formula for each of the given coordination complexes is to be written.
Concept Information:
Complex ions are ions formed by a metal atom at their center such that, other nonmetal molecules or ions surround it.
Ligands are molecules or ions that are bonded to a metal ion with a coordinate covalent bond.
Coordination complexes are complexes that are formed by a coordinate covalent bond between ligands and metals.
To write the formula for a complex, following rules are utilized:
The symbol for the metal ion is always given first, followed by the ligands.
When more than one kind of ligand is present, anionic ligands are written first (in alphabetical order), followed by neutral ligands (also in alphabetical order).
The charge on the complex is the algebraic sum of the charge on the metal ion and the charges on the ligands.
The formula is placed inside of the square brackets with the charge of the complex ion as a superscript outside the brackets. When the charge is zero the brackets and charge are omitted.
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- Cobalt (II) chloride can form two complexes when dissolved in water: [Co(H2O)6]2+(aq) which is pink in colour, and [CoCl4]2- which is blue. The equilibrium system isarrow_forward(a) Draw a Lewis dot and cross structure (including any lone pairs) for a NBr3 molecule and determine the shape of the molecule and number of valence electrons. (b) Six ammonia ligands form a complex ion with Co²+. What is the overall charge of the complex ion? Write the formula for the complex ion. What is the coordination number of the complex ion? Explain how ammonia ligands form a complex ion with Co²+? What is the geometry of the complex ion? Would you expect the complex to be coloured? Explain why? i. ii. iii. iv. V. vi.arrow_forwardName the compounds (a) [Mo(NH3)3Br3]NO3,(b) (NH4)2[CuBr4]. (c) Write the formula for sodium diaquabis(oxalato)ruthenate(III).arrow_forward
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- What should happen when the concentration of chloride is increased in a solution containing hexaaquocobalt(II), [Co(H2O)6] 2+ (aq)?arrow_forwardCopper(II) ion exists in water as the [Cu(H2O)6]2+ ion. Ammonia forms stronger bonds to copper than does water and hence was able to replace the water molecules in this complex ion to form the tetrammine complex, [Cu(NH3)4]2+. What properties of a ligand make it a “strong” ligand? Use your textbook or an encyclopedia of chemistry to find an example of a ligand that would be “stronger” than ammonia and this would be able to replace ammonia from [Cu(NH3)4]2+ .arrow_forwardTitanium (IV) exists in aqueous solution but not as the Ti4+(aq) ion. Suggest the identity of the species.arrow_forward
- Pyridine (CsHgN), abbreviated py, is the molecule N: (a) Would you expect pyridine to act as a monodentate or bidentate ligand? (b) For the equilibrium reaction [Ru(py),(bipy)]²+ + 2 py = [Ru(py),J* + bipy would you predict the equilibrium constant to be larger or smaller than one?arrow_forward3a) The nitrosyl ion, NO*, is a very rare case of a cationic ligand that can function as a Lewis base. Draw the Lewis structure of this ligand under consideration of the VSEPR rules and indicate any formal charges on the constituent atoms. 3b) How many electrons does the NO* ligand contribute on the ionic model and the neutral model, respectively? Assume that the Metal-N-O bonding angle is 180° upon coordination.arrow_forwardWrite the formula for sodium diaqua-bis(oxalato)ruthenate(III).arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning