Concept explainers
Interpretation:
The formula of the given compoundis to be determined:
Concept introduction:
Coordination compounds are the compounds formed by the reaction of metal ions with polar molecules, or with a group of anions. They contain coordinate covalent bonds.
Oxidation state is also known as oxidation number. It is used to describe the oxidation, that is, theloss of electrons, in any compound.
The ligands are named first in alphabetical order and metal ion last in a complex ion.
The name of anionic ligand ends with letter ‘o”.
The neutral ligands are called by the name of the molecule except
Prefixes di, tri, tetra, penta, and hexa are used, to specify the number of ligands when two or more of same ligands are present.
The oxidation number of the metal is written after the name of the metal in roman numerals.
If the complex is an anion, its name ends with ‘-ate’.
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Chemistry
- Platinum(II) forms many complexes, among them those with the following ligands. Give the formula and charge of each complex. (a) two ammonia molecules and one oxalate ion (C2O42-) (b) two ammonia molecules, one thiocyanate ion (SCN-), and one bromide ion (c) one ethylenediamine molecule and two nitrite ionsarrow_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_forwardWhat is the chemical formula of Tetraquadibromochromium(III) chloride?arrow_forward
- (b) Consider the oxalate (ox) ligand and answer the following questions:(i) Draw the structure of the ox ligand.(ii) Identify all the donor atoms of the ligand.(iii) What is the denticity of the ligand?(iv) What is the charge of the ligand?(v) Draw the structure of a homoleptic octahedral complex with ox as the ligand.Clearly show the geometry at the metal centre.(vi) Identify the stereoisomer in the structure drawn.arrow_forwardDraw the energy diagram for d-orbital electron configuration in the octahedral field for each of the following complex ions. Indicate whether the ion is paramagnetic or diamagnetic: (a) [Cr(H2O)6]3+ (H2O is a weak-field ligand) (b) [Cr(NH3)6]3+ (NH3 is a strong-field ligand) (c) [CoF6]3– (F– is a weak-field ligand) (d) [Co(CN)6]3– (CN– is a strong-field ligand) (e) [Ni(H2O)6]2+ (H2O is a weak-field ligand) (f) [Ni(en)3]2+ (en is a strong-field ligand)arrow_forwardThe complex ion [Co(CO3)3]3-, an octahedral complex with bidentate carbonate ions as ligands, has one absorption in the visible region of the spectrum at 640 nm. From this information, (a) Predict the color of this complex and explain your reasoning. (b) Is the carbonate ion a weak- or strong-field ligand? (c) Predict whether [Co(CO3)3]3- will be paramagnetic or diamagnetic.arrow_forward
- Chemistry Give the IUPAC name for the following metal complex: [Fe(H2O)4Cl2] The answer is not Tetraaquadichloroiron(II).!!!!arrow_forward3. Assuming that each of the following compounds contains an octahedral complex ion, which compound will produce a precipitate of AgCl when treated with aqueous AgNO3 solution? (A) Co(NH3)5CI3 (B) Co(NH3)3C\3 (C) Na3CoCl, (D) All of them.arrow_forwardHow many geometric isomers does the octahedral coordination compound[Co(NH3)3Cl3] have?arrow_forward
- When cobalt (II) chloride is treated, under certain conditions, with the bidentate ligand, NH2CH2CH2NH2, (which can be represented by the symbol “en”), the compound [CoC12(en)2] Cl is formed. i) What is the oxidation state of cobalt in the compound formed? ii) When this compound is treated with aqueous silver nitrate, only one mole of silver chloride is produced per mole of compound. Explain this observation.arrow_forwardDraw all the possible geometric isomers for [CoBrCl(NH3)2(ox)]–.arrow_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_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning