When cobalt(II) chloride is treated, under certain condition, with the bidentate ligand, NH2CH2CH2NH2, (which can be represented by the symbol “en”), the compound [CoC12(en)2]Cl is formed. a. What is the coordination number of cobalt in this compound?

Use the thermodynamic data below to compute the average bond enthalpy of the metal-ligand bonds in [Cu(NH3)4]2+(aq). Species ΔfH0kJ/mol S0J/mol/K NH3(aq) -80.29 111.3 Cu2+(aq) 64.77 -99.6 [Cu(NH3)4]2+(aq) -348.5 273.6 Include 3 significant figures

A complex with the following formula may possess which kind of isomerism? (Different letters A-F denote different ligands.) K[M(en)2A2]

Consider the coordination complex with the formula: [Fe(NH3)4(NO2)2]Br a. Can this complex have isomers? If so state which types? Explain your decisions about isomers based on the number and type of each ligand. Hint: what atoms of NO2 - ion can bind the metal ion? Also do you have ‘looping’ ligands? Isomer types include: geometric (cis-trans), linkage, optical, and coordination. b. Draw the crystal field diagram (of d orbital energies) for this complex. State the number of unpaired electrons on the Fe ion. Label the potential energy axis and the 2 orbital levels on your diagram. c. Predict the color of this complex. Explain your answer based on the field strength of the two types of ligands in the complex, using field strength listing below and the color wheel provided on the equations page. d. Will this complex be paramagnetic or diamagnetic? Explain your decision briefly based on the number of unpaired electrons on the metal ion in the complex.

Balance this equation and balanced reaction equation and the quantities included in the procedure to calculate the theoretical yield of K[Cr(C2O4)2(H2O)2]·2H2O.

The molecule CO is a common ligand in transition metal complexes forming a strong bond with the metal ion. b) Based on Lewis structure of CO, which end of the CO molecule do you think is the electron source to form the metal-ligand bond? Why?

Give the geometry for each of the following compounds and please explain Ag4[Fe(CN)6] K2[Co(NCS)4] Na3[VF6] K3[Cr(C2O4)3]

When the copper (II) sulphate solution is reacted with a bidentate ligand such as ethylenediamine (en), the same thing would have happened. However, since one bidentate ligand has two donor atoms (Brown et al, 2017), each Cu2+ ion would only have 3 ligands at most, instead of 6 when reacted with monodentate ligands. The equation of the reaction is as follows: [Cu(H2O)6]2+(aq) + 3en(aq) → [Cu(en)3](aq) + 6H2O(ℓ)   a. How do we know how many ligands can enter? b. Explain briefly the discussion above.

The pentacarbonyl metal, M(CO)5 complex, has two geometrical structures: trigonal bipyramidal or square pyramidal. Experimentally, it was found that the Ru(CO)5 complex show two stretching CO bands in the IR and three bands in the Raman region. According to these information, what would be the expected structure for Ru(CO)5?

Given the coordination compound Na4[Fe(ONO)2(ox)2].- What is the type of hybridization of the central metal in the complex ion? - Considering the geometry and the ligand field strength of the complex anion, show how the five d orbitals split and how the d electrons are distributed in these orbitals. Label each d orbital (e.g. dxy).