Select the correct statmenet(s) for Ansa complex`MLnA. The link helps only in the bonding of the cyclopentadienyl ligandB. The link modifies the structure and reactivity of the metal centerC. Ansa bridge allows greater control of the stereochemistry at the metal centerD. ansa-metallocenes are used in polymerization reactionsE. Ansa-metallocenes can't bind an alkene moleculeO A and EОВ,Сand DОА, В, С and DO D and E

Ansa complex is a category of organometallic compounds where two cyclopentadienyl group is bridged…

Answered: Select the correct statmenet(s) for…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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 What is the mechanism of action of cisplantine as an anticancer agent? Try to draw the electronic configuration of cisplatine showing the hybridization mechanism, complex electronic configuration and the shape of this complex molecule? Which electron pairs with be shared to the vacant dsp2platinium ion vacant orbital from Cl and amine groups of cisplatine.
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.)
copper complex crystallises straightaway when synthesising but the cobalt complex required the solution to be concentrated and cooled before it is filtered to obtain product. what does this tell you about the realtive solubilities of the copper and cobalt complexes.
Which of the following statements about 10Dq is false? A. [VCl6]2- has a greater 10Dq than [VCl4] complex.B.[MnF6]2- has a higher 10Dq value than [TcF6]2-.A. [V(H2O)6]3+ has a higher 10Dq value than [V(H2O)6]2+.D. In the [CoX(NH3)5]n+ complex, the color changes from dark violet to yellow when X is replaced by I-, Br-, Cl-, H2O, and NH3, respectively.
Which of the following ligands does not donate 6 electrons when coordinating to a transition metal center? Group of answer choices tropylium (C7H7+) cyclooctadiene (COD) cyclopentadiene (C5H5-) benzene (C6H6)
In less than a 100 words explain the meaning of stereochemical nonrigid organometallic complexes. Include and briefly discuss any example of a coordinated transition metal complex that can undergo stereochemical changes.
About the chelating agents (ligands) classification (all are correct except Select one: 1- succimer mainly behave as a divalent chelating agent when chelation occurs through its two neighboring SH group however, in case of techitium complex it behaves as a trivalent chelating agent 2- the divalent chelating agents/ligands have two electron donating groups like oxalte two carboxyl groups 3- the pentavalent chelating agents/ligands have five electron donating groups like diethelentriamine pentacetic acid 4- the trivalent chelating agents/ligands have three electron donating groups like EDTA
Many transition metal complexes are said to follow the “18-electron rule,” meaning they form particularly stable complexes when the metal + ligand electrons contributing to the MOs add up to a total of 18 electrons. a. Use the full MO diagram for an octahedral metal complex with pi-acidic ligands we derived in class to justify why 18-electrons might be particularly stable. b. Use the 18-electron rule to predict which 1st row transition metal would be most likely to form an octahedral M(CO)6 (Note: there is no charge; the metal retains all its electrons.) c. Qualitatively, how would you expect the CO bond to change when it forms this complex? Would it be stronger, weaker, or the same compared to free CO? (Hint: think about what a ? −???? means and what the orbital does from the perspective of the M–CO interaction as well as the C– O interaction).
1) What role do the protons play in the transformation of [(SALEN)VO] to [(SALEN)Cl2]? --- Consider the number of anionic charges for all the ligands as well as the charge of the overall complex. Has the oxidation of vanadium changed in this reaction?
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…
Hand- draw the structure of the complex below. Predict using the "18 Electron Rule" if the following complex are stable? (use neutral ligand method) [(η5-C5H5)2Ru2(CO)4]

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