Fill in the catalytic intermediates and provide number of electrons and provide oxidation state of the metal PPh Pd. PPh PhyP Pphg PPhg ligand dissociation 2 PPhy OMe product Ph,P-Pd-PPhg electron count: oxidative addition reductive elimination oxidation state: electron count: transmetallation KOIBU NH
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- A nickel schiff base complex was formed following the synthesis below: nickel(II) acetate tetrahydrate + pyrrole-2-aldehyde was reacted with a solution of ethanol/water and refluxed at 65oC. 2M sodium hydroxide was added along with a solution of 1,3-diaminopropane in water. The solid formed was dissolved in dichloromethane and heptane was added to it. The dichloromethane was evaporated off and the product was vacuum filtered. What is the reaction mechanism for this reaction and what is the name of the end product formed? Draw the structure of the product formed.Why wouldn't this ruthenium catelyst, with two trans IMes ligands, be good at catalysing alkene metathesis?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.)Cation Elimination Test ObservationsAdded Reagents and their ObservationsNaOH = Light blue pptExcess NaOH = undissolved pptNH3 = Blue pptExcess NH3 = Dissolved precipitation ; deep blue complex1. What are the possible Cation/s present?Cu2+ , Zn2+ , Ca2+ , Fe3+ , NH4+ Cation Confirmatory test ObservationsAdded Reagents and Observation:Excess NH3 = Dissolved precipitation ; deep blue complexKSCN = NVRK4Fe(CN)6 = NVRK4Fe(CN)6 = NVRNa2C2O4 = White precipitationNaOH (in evap dish) = NVR2. what are the possible ion/s present? Show a flowchart.Cu2+ , Zn2+ , Ca2+ , Fe3+ , NH4+What two components are needed to prepare para red by azo coupling?
- show the reaction mechanism formation of Co(III) acetylacetonate from CoCO3 dissolved in acetylacetone, ammonia and 2ml of acetylacetonate with 10% aqueous hydrogen peroxide. show the arrangement of the ligand around the complex1. What is the full name of DMG? What is role of DMG in complex formation? 2. What is the structure of Ni-DMG complex? 3. Why the Ni-DMG complex is made alkaline?Scott test is one of the methods used for screening for Cocaine in Forensic Chemistry. The multi step method consists of a) reacting the sample drug with cobaltous thiocyanate b) dissolving of the formed precipitate by adding HCl and c) extraction of coordination compound with Chloroform d) measurement of absorbance of extracted coordination compound at 627 nm All the reactions in this multistep method are not fully understood. However, it was determined that there are 2 moles of cocaine in coordination compound measured in last step. If coordination compound is represented as “Scott” coordination compound, which of the following is correct “stoichiometric” factor to get mass of cocaine from mass of measured complex ? a.g (Scott coordination cpd) * MM (Scott coordination cpd) MM (cocaine) b.g (Scott coordination cpd) * 2 *MM (Scott coordination cpd) MM…