Magnetic moment of a first-row transition-metal complex M (H,O), is 3.9 Bohr magnetons. Identify the metal A) Cobalt only B) Vanadium only C) Either cobalt or vanadium D) Cannot be predicted
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- Given the Tanabe-Sugano diagram below for a d3 complex.Which of the following transitions corresponds to the ∆o?A.4A2g → 4T1g (F)B. 4T2g → 4T1g (P) C.4A2g → 4T1g (P) D.4A2g → 4T2gDetermine the LFSE and calculate the spin-only magnetic moment for the following complexes: trans–dichlorotetrakis(triphenylphosphine)nickel(II) tris(bipyridine)ruthenium(II) ion cis–dicyanobis(oxalato)manganate(II) ionBy using the given 1) electronic absorption spectrum, 2) the Tanabo-Sugano diagram for d3 complex in octahedral ligand field and 3) the absorption/emission spectra, explain the following: a) Ligand field states (to support your explanation show the filling of the orbitals) b) Radiative transitions (to support your explanation refer to fluorescence, phosphorescence and Stokes’ shift)
- (a) Which is the acid and which is the base in the reaction? Explain using the appropriate acid / base definitions. (b) A proton is defined as a hard acid. What does this tell you about the properties of [Si9]4-? Explain. (c) [Si9]4- belongs to point group C4v. 1. Describe what will happen to the symmetry elements if one of the atoms is replaced with carbon, as seen in the following figures: (specify which symmetry elements are lost) 2. Is either A or B chiral? Explain. (d) Using Wade's rules, predict the cluster structure of [Si9]4-. Which borohydride cluster is identiical to the [Si9]4-cluster structure? explain.Draw the metal coordination structure of carbonic anhydrase enzyme. Clearly show the 3-Dgeometry round the metal center. *Hi, I am actually confused on what a 3-D geometry of this structure should look like and would like some clarification, Thank You in advance!When Alfred Werner was developing the field of coordinationchemistry, it was argued by some that the opticalactivity he observed in the chiral complexes he hadprepared was due to the presence of carbon atoms in themolecule. To disprove this argument, Werner synthesizeda chiral complex of cobalt that had no carbon atoms in it,and he was able to resolve it into its enantiomers. Design acobalt(III) complex that would be chiral if it could be synthesizedand that contains no carbon atoms. (It may not bepossible to synthesize the complex you design, but we willnot worry about that for now.)
- If you have an octahedral site (Coordination Number 6). What is the minimum rcation/ranion? Prove your answer.Determine the symmetry point groups of the mer- and fac- isomers of the complex [Re(CO)3(NCMe)3] and deduce the irreducible symmetry representations generated by the three stretching vibrations of the C triple bond to N ligands in each of the isomers. [Regard NCMe as a linear ligand.] Also for each isomer discussed, state with reasoning which vibrations are IR active, and which are Raman active and how many bands will be observable in IR and Raman spectra. How can you distinguish the two isomers using their vibrational spectra?q) AlCl3 forms a dimer in the gas phase, the structure of which is shown below. Determine all the symmetry elements and identify its symmetry point group. Justify graphically q) Determine the symmetry representations of CO stretching vibrations of a Mn(CO)5Br complex, which has a pseudo-octahedral structure with CO ligands at five corners and a Br ligand at the sixth corner. Which of the CO stretching vibrations are active in IR absorption and which in Raman spectra? Justify graphically
- What point group is produced if an octahedral (Oh) complex is distorted by stretching two trans M-L bonds and compressing another two trans bonds? D4h D2d D2h C4vShow all electronic transition in the spectrum of a d3 complex. Scetch the appropriate spectrum.Blue LED used as illlumination and Yellow LED used as detector. Explain at Molecular basis detail for beer's lambert law the effect of it and what will happen if you will choose this LED color.