A transition metal chloride (MCI;) combines with pyridine and DMSO to give a metal complex with a formula MCI2(DMSO)»(py). The FT-IR spectrum (in the range from 1425 to 300 cm) of the complex is shown below. L= DMSO MCI, + py + 3L py=N
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- the hexaquanickel(II) has a delta oct of 8,500cm-1. Calculate the CFSE of this complex with your answer as cm-1Describe main features of the evidence of M-CºC characterization and corresponding techniques of this complex (COCL(PPh3)2-III(CF3)2)...?By 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)
- Elimination of an L ligand (as the first step of a D substitution mechanism) from a charge - neutral NiL4 complex has very little tendency to occur for L = P(OMe3), but for L = PMe3, it occurs almost completely. Since the two ligand species have approximately the same cone angle, what factors are responsible for this difference?The red color of soil is often due to the presence of iron. Metal ions are extracted from soil by stirring the soil in acid and then filtering the solution. One method for the analysis of Fe2+ is to form the highly colored Fe2+–thioglycolic acid complex. The complex absorbs strongly at 535 nm. Calibration standards of 1.00, 2.00, 3.00, 4.00, and 5.00 ppm are prepared by transferring appropriate amounts of a 10.0 ppm working solution of Fe2+ into separate 50-mL volumetric flasks, each of which contains 5 mL of thioglycolic acid, 2 mL of 20% w/v ammonium citrate, and 5 mL of 0.22 M NH3. After diluting to volume and mixing, the absorbances of the standards are measured. a)What is the effect on the reported concentration of iron in the sample if there is a trace impurity of Fe2+in the ammonium citrate?The red color of soil is often due to the presence of iron. Metal ions are extracted from soil by stirring the soil in acid and then filtering the solution. One method for the analysis of Fe2+ is to form the highly colored Fe2+–thioglycolic acid complex. The complex absorbs strongly at 535 nm. Calibration standards of 1.00, 2.00, 3.00, 4.00, and 5.00 ppm are prepared by transferring appropriate amounts of a 10.0 ppm working solution of Fe2+ into separate 50-mL volumetric flasks, each of which contains 5 mL of thioglycolic acid, 2 mL of 20% w/v ammonium citrate, and 5 mL of 0.22 M NH3. After diluting to volume and mixing, the absorbances of the standards are measured. a)Use the data table below to prepare a calibration curve (absorbance versus concentration in ppm). Fit the data to straight line and find the equation for the straight line and the R2 value. (Hint: Think about what to do with the absorbance of the blank.)
- According to the IR spectroscopy results of [Co(NH3)5ONO]Cl2 and [Co(NH3)5NO2]Cl2 complexes, the symmetrical and asymmetrical NO stretching vibrations found for one of the complexes (I) are 1315 and 1430 cm-1, respectively, for the other complex (II). these values are 1065 and 1430 cm-1, respectively. According to the data, complex (I) is …………… and complex (II) is ………….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.)Show how to use the microanalysis data to determine the number of cod (C8H12) ligands per Pd. C, 33.65%; H, 4.24%; N, 0.00%; Pd, 37.27%.
- You have been sent to India to investigate the occurence of goiter disease attributed to iodine deficency. As part of of your investigation, you must make field measurements of traces of Iodide(I-) in groundwater. The procedure is to oxidize I- to I2 and convert the I2 into an intensely colored complex with the dye brilliant green in the organic solvent toluene. a) A 3.15x10^-6 M solution of the colored complex exhibited an absorbance of 0.267 at 635nm in a 1.00cm cuvet. A blank solution made from distilled water in place of groundwater had an absorbance of 0.019. Find the molar absroptivity of the colored complex. b)The absorbance of an unknown solution prepared from ground water was 0.175. Find the concentration of the unknown.The complex formed between Cu(I) and 1,10- phenanthroline has molar absorptivity of 7000 L cm-1 mol-1 at 435 nm, the wavelength of maximum absorption. A. If you are going to prepare Cu(I) solution that will have a 0.2 absorbance when complexed with 1,10- phenanthroline, what will be the Molarity of this Cu(I) solution if this is the limiting reagent? Pls show your step by step solution B. What type of ligand is 1. 10 phenantroline ? C. What is coordination number of Cu+1 in the complex ? Cu(I) molar mass=63.546 1,10- phenanthroline molar mass=180.2.Show all electronic transition in the spectrum of a d3 complex. Scetch the appropriate spectrum.