4. dibromotetracarbonyliron(I): 5. pentaamminechlorocobalt(III) chloride: 6. triaquabromochloroiodochromium(0): 7. trisoxalatocobaltate(3-): 8. pentaammineazidecobalt(2+) sulfate: 9. potassium pentachloronitridoosmate(VI):

Chemistry Combinations of cobalt (III), ammonia, nitrite ions, and potassium ions result in the formation of a series of seven coordination compounds with the coordination number of cobalt equal to six and the ligands bonding to the central atom through N. Give the formulas and names of ALL the seven compounds in the series.

Hexaamminechromium(III) ion, [Cr(NH³)]³+ is a metal complex containing six ammonia ligands i. ii. Using the Valence Bond Theory, construct the hybridization state of [Cr(NH3)6]³+. Predict the observed colour of the complex ion if the absorbed colour is blue-violet and briefly explain your answer.

Write the types of isomerism in coordination chemistry.

4. For each of the following transition metal complex ions (a) [FeBr2(OH)(NO3)]¹- (b) [RhF3(SCN)3]4- (c) [TiBr4]³- (i) Draw the structure of the transition metal complex ion. Show the charge on the complex in your structure. Give the oxidation state of the metal. State whether the complex is high spin or low spin or not applicable. Provide reasons for your answer. (iv) Draw the arrangement of d-electrons in the ground state. Label the orbital sets. (v) Calculate the LFSE (in units of Ao or AT) for each complex. (ii) (iii)

Which statements are true regarding ligands? Select all that apply. Ligands donate all electrons involved in bonds they form with metal cations. Ligands are electron pair acceptors in coordination complexes. Ligands act as Lewis bases in coordination complexes. Ligands form ionic bonds with transition metals. All ligands with two lone pairs are bidentate. A ligand that can donate more than one electron pair to a metal cation is called a chelate. One ligand can donate only one lone pair to a metal cation.

Give the chemical formula of the following coordination compound. Enclose complexes in square brackets, even if there are no counter ions. Do not enclose a ligand in parentheses if it appears only once. Enter water as H₂O. Use any abbreviation given in blue below the question, and enclose it in parentheses if there is more than one. Compound Name tetraaquadihydroxonickel(II) Formula

Give the chemical formula of the following coordination compound. Enclose complexes in square brackets, even if there are no counter ions. Do not enclose a ligand in parentheses if it appears only once. Enter water as H₂O. Use any abbreviation given in blue below the question, and enclose it in parentheses if there is more than one. Compound Name tris(ethylenediamine)zinc(II) iodide H₂N CH₂-CH₂ NH₂ Ethylenediamine en Formula

You are comparing two coordination complexes that have the same molecular shape and central metal cation. Complex A has only chloride ligands and Complex B had only CO ligands. Which statements are true regarding the complexes? Select all that apply. Complex A has the smaller crystal field splitting. Light of higher frequency is required to promote an electron from the lower to the higher d orbitals in complex A relative to complex B. The light emitted as a photon is released to relax an electron from higher to lower energy d orbitals has a longer wavelength for complex A. Light of higher frequency is required to promote an electron from the lower to the higher d orbitals in complex B relative to complex A. The light emitted as a photon is released to relax an electron from higher to lower energy d orbitals has a longer wavelength for complex B. Complex B has the smaller crystal field splitting.

An octahedral complex having the formula [M(dien)(NH3)(OH2)F] has a total of 15 isomers. In the sum formula “dien” represents the tridentate diethylenetriamine ligand, which can adopt meridional or facial coordination modes. Draw structures of 8 possible isomers, clearly showing any pairs of enantiomers. The tridentante ligand may be abbreviated as below for simplicity.