5

(24) We discussed two types ofhy "ogenase enxYIneS;Cvst"FG eCyscs77Cyss F0_S4Fe-FG hydragenaseNi-Fe: hyorogenase(a) (4) Write balanced reaction equation f...

Question

(24) We discussed two types ofhy "ogenase enxYIneS;Cvst"FG eCyscs77Cyss F0_S4Fe-FG hydragenaseNi-Fe: hyorogenase(a) (4) Write balanced reaction equation for Ihe: (reversihle) reaction catalyted hydrogcnases, .(6) Bolh active sites demonstrate highly Unusual (in biology) ligands at the Fe centers: CO and CN Given your knowledge of coordination chemistry; whal is rhe possible purpose of these ligands? Limit your #nSIEI l0 ho-three senletcesnol the most reliable experimental tool study (

(24) We discussed two types ofhy "ogenase enxYIneS; Cvst "FG e Cysc s77 Cyss F0_S4 Fe-FG hydragenase Ni-Fe: hyorogenase (a) (4) Write balanced reaction equation for Ihe: (reversihle) reaction catalyted hydrogcnases, . (6) Bolh active sites demonstrate highly Unusual (in biology) ligands at the Fe centers: CO and CN Given your knowledge of coordination chemistry; whal is rhe possible purpose of these ligands? Limit your #nSIEI l0 ho-three senletces nol the most reliable experimental tool study (8) Generally, spectroscopy However; it is uniquely suilable lo study the mechanism of Hzases. biological systems_ Explain both statements (in 2-3 sentences cach tOst). the active site ol" Fe-Fe the mechanistic proposals; (6) According onc (d) of the pdt (dithiolate) bridge TX atom (likely nitrogen) a5 part mechanism, Limit hydrogenase features possiblc role of X atom in the reaction linking [wo irons. Explain the your answer to 2-3 sentences.



Answers

Directions: This section contains 3 paragraphs. Based upon the paragraph, 3 multiple choice questions have to be answered. Each question has 4 choices (a), (b), (c) and (d), out of which ONLY ONE is correct. Passage I Amines have the formula $\mathrm{RNH}_{2}$ and can be prepared by different methods. Some of them are (i) reduction of nitriles (ii) reduction of amides (iii) reduction of azides and (iv) Gabriel phthalimide synthesis. The most important property of amines is their basicity due to the presence of lone pair of electrons on nitrogen. Answer the following questions. The method, $\mathrm{RX} \stackrel{\mathrm{KCN}}{\longrightarrow} \mathrm{RCN}, \frac{\text { (i) LiAlH }_{4} \text { lether }}{\text { (ii) } \mathrm{H}_{2} \mathrm{O}} \mathrm{RCH}_{2} \mathrm{NH}_{2}$ is not suitable for the preparation of benzyl amine because (a) $\mathrm{RX} \stackrel{\mathrm{KCN}}{\longrightarrow} \mathrm{RCN}$ reaction is not possible since chlorobenzene does not undergo $\mathrm{S}_{\mathrm{N}} 1$ or $\mathrm{S}_{\mathrm{N}} 2$ reaction. (b) It is difficult to reduce $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CN}$ to $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{NH}_{2}$ (c) Bromobenzene gets oxidized (d) LiAlH $_{4}$ cannot reduce $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CN}$.

So first were given this reaction it's an oxidation rate reduction reaction. We start with chromium two plus and cobalt three plus And then we go to chromium three and cobalt to So for this we know that chromium three and no Excuse me. Chromium three here and cobalt three don't exchange Liggins. However chromium to and cobalt to do exchange Liggins rapidly So we're given one of the products which is chromium. Is there chromium three complex and were asked if it makes sense that the intermediate that were given here make sense. So if we look at this, we should be able to say that yes, This both this product here and this intermediate down here are consistent. So after oxidation, these Liggins won't exchange because the chromium three this comment again isn't going to exchanged So instead, what had to have happened is before chromium to became chromium three, it had to form a bond here with chromium to so overall, this product and this intermediate are consistent

It's like the formation of the chromium and cobalt complexes through intermediates have each to five chromium chlorine Cobalts in H 35 This would be chromium to kobo three. This would produce each 205 chromium, chlorine, cobalt and H 35 This would be chromium three and cobalt to and this would produce chromium H 20 five c l two plus complex and a cobalt too complex. So after the oxidation. Okay, the Liggins on chromium three won't exchange since zero minus is in the coordination sphere. It must have formed a bond to chromium too, before the electron transfer occurred. Okay, this would be as proposed through the information of the intermediate.

This parliament introduces us to a new concept called the Intermediate of a Reaction. And if you're familiar with this concept, that's also great. But in this problem, we're going to be understanding the presence of an intermediate using our knowledge knowledge. Pardon me of coordination chemistry in the chemistry of the transition metals. Before we go into the intermediate chemistry, let's write out this reaction to understand what compounds were forming. So we start with this chromium complex where we have chromium bound to six waters and we'll add a cobalt complex where it's bound to five amine groups and a chlorine. And when we do this, we're going to form this very long string of metals. And this is what we're calling or intermediate, where we have five water molecules bound with all of our two medals. Chromium bound to chlorine, bound to cobalt and off of our cobalt, will have five amine groups, and we're going to be left with one water group at the end of this. Then let's just note from other compounds that we're going to be seeing, and we're just simply writing this in another format. We're going to have five waters bound to chromium bound to chlorine. So this is going to be one complex ion and there are other complex ion is going to be five amine groups bound to cobalt. Okay, so now what we need to do is understand why we see this intermediate, using our knowledge of transition, metal chemistry and the cobalt we have President is cobalt three and we know that Cobalt three is not lay bile. And if you're not familiar with the concept lay bile, we know at Cobalt three is not laid by all based on its position in the periodic table. So what we see because of this is that the transfer of our chlorine anti on is independent of our reaction. So this allows the cobalt bound to the chlorine to become label. And what we see is that we obviously have a chlorine, an ion, And what this is telling us through this reaction in our intermediate is that we have no radioactive species. So we have no radioactive chemistry that is essentially interacting with the various steps in our reaction that we see. So this proves that the transfer of cobalt two chromium is through Redox chemistry and this then further indicates that we have this formation of this hydrated cobalt complex of cobalt bound to six water Liggins. And what we see here is because we have this transfer from the medals, we can deduce that cobalt to which has the electron configuration of three D seven is label. And that's why we see this reaction. Intermediate is because we see this transfer from the medals and the fact that cobalt three is not lay bile while cobalt two is label. I hope this problem helped you a little bit and understanding the reaction steps we see and more importantly, how we can analyze why we see an intermediate in a reaction involving not only one transition metal but to

Here's a coordination compound, sir. Cuban on the Cushing is right there for black Signed present in it and order the counter islands. Then electronics, contribution of the transition metals and geology of the complex saying in debt Garnishee compact. So when we're when we're doing this. So in case of a a Cornish component which is given these Coburn tablets combined mid water Monday, June that is six working monkeys and this is the coordination component with the clothing outside duplicate. Now here we have to decide what is the complex I in present so complex. And here is this part which is inside the blanket. This is the complex. Same He should mean blessed Second important thing is over the counter tried contra trying is the iron which is present outside the bracket and it is unnoticeable. So it should be grain minus curry Ease electrical conflagration of the transition. Actually, now what is here edge The world is atomic number 27 and he urges at plus two exhibition state select turning contribution off this place to world is immunised noble Guess conflagration And after that region rate, we should be full s you three d seven So this is that really attorney contribution off by darkness. And after that, at the end, ever the complex me up to date. What is just jumping? See, when six is the Kardashian number that Mr Geology is uptight. Hedren. Mr Jumped. Yeah. So this is about the economy. Lex now becomes big. Jobless is and a T Then a gene then turns and fruit a stupid T choice and insect. This is the big complex, sir Coordination component Skillman and ever. This we have delayed first, is what is the complex I'm presenting. It can rate the thing which is inside direct it so as to be to, uh this wrong My ministry. Mr Corbyn saying Now, what is the underlying? That is energy, whether it is outside the bracket. So jin range, it is sodium the same and it is a little over three and third a thing. The verdict is Forrester Elektronik contribution off dissented, matter election So here it is edgy Plus center matter London And you're saying Johnny contribution should be here is the nearest well This confirmation after that can write. It should be Friday s CEO for Dejan So this should be the electronic contribution and forth question ever complexes. What is your junkie? So when coalition number is to that means ladies Virginia Joe, you should So this show this is dancer for the B. Now come to see So for does she accomplice? Beavan is Kardashian compound Human is go bird which is inside the wreckage. Well, blood than manage to four. And this whole thing is inside the blockage. And now said the activities seal too. No one weatherman, all the cushions first for shame. What is the complex? I am here soon. Should me The thing just inside the wreckage. Energy for range Eating the bracket and the judgment close to now Come to second point. They just What is the culture? I am so here The counter drying ins upset The flippant finishing one This is two C minus. No going to turn one. It is good Is that you're turning contribution? Oh, the sentry battler Doom open is edge Oh, I don't know s contribution So they're silly of me A And after that region raid, you treat me for as she Now, when this treating name and all the electrons are feeling the Dior and last one is only one in John that is unfairly drawn. Soon the joint should be, as with the hibernation and get your head in jumps. So it is, uh, given in the question also that as young, this copper complex science have tried a junkie, and accordingly, we can rate the drunk on tradition and job Children.


Similar Solved Questions

5 answers
(7.1) Consider the sulspceSUI-(JO) Fiud Imnsls for V explain why[lS -(7.2) Let{7 ,- T} Ix sunet of R"_Show that il F € span( 5), anal w€ 5-_ then '4 = Conclucle ~pan(S) € (54)" Suppost ~pan( 5) =V_ Au decompxrie 4 in Tht 64 Note that 2 L sluww that F0 Conclule that (5 ~pan(S) for Subsut of R".
(7.1) Consider the sulspce SUI -(JO) Fiud Imnsls for V explain why [lS - (7.2) Let {7 ,- T} Ix sunet of R"_ Show that il F € span( 5), anal w€ 5-_ then '4 = Conclucle ~pan(S) € (54)" Suppost ~pan( 5) =V_ Au decompxrie 4 in Tht 64 Note that 2 L sluww that F0 Conclule ...
5 answers
Synthesize 2-pentanol using acetylene as your only source of carbon atoms. [10]
Synthesize 2-pentanol using acetylene as your only source of carbon atoms. [10]...
5 answers
Robert sold $1,620 of product last year, 18% of district sales. His territory held 12% of the district's sales potential. The company mandates a $10,000 district sales forecast; a $1,000 increase from the prior year_ What will be Robert' sales goal based on his prior year sales %?
Robert sold $1,620 of product last year, 18% of district sales. His territory held 12% of the district's sales potential. The company mandates a $10,000 district sales forecast; a $1,000 increase from the prior year_ What will be Robert' sales goal based on his prior year sales %?...
5 answers
Question 422 ptsThe critical point of f (~) (sin €}) (cos #F on the interval (0,T/2) is at €no critical point4 3 {
Question 42 2 pts The critical point of f (~) (sin €}) (cos #F on the interval (0,T/2) is at € no critical point 4 3 {...
5 answers
2. Calculate the pOH (to two decimal places) for the following:a) 2.39x10-3 M HCI Submit Answer Submission not graded: Use more digits. Tries 0/13 Previous Triesb) 1.27x10-1 M SrHz Submit Answer Incorrect. Tries 1/13 Previous Tries
2. Calculate the pOH (to two decimal places) for the following: a) 2.39x10-3 M HCI Submit Answer Submission not graded: Use more digits. Tries 0/13 Previous Tries b) 1.27x10-1 M SrHz Submit Answer Incorrect. Tries 1/13 Previous Tries...
3 answers
Solve the following linear optimization problem in standard form using the simplex algorithm: Start from the basic feasible solution corresponding to the basis {x1.X2}_minimize X1 +42 + 2x3 + x4 subject to X + 2x3 2x4 = 2 Xz + X3 + 4x4 = 6 X 2 0 X2 2 0 X3 > 0 X4 2 0
Solve the following linear optimization problem in standard form using the simplex algorithm: Start from the basic feasible solution corresponding to the basis {x1.X2}_ minimize X1 +42 + 2x3 + x4 subject to X + 2x3 2x4 = 2 Xz + X3 + 4x4 = 6 X 2 0 X2 2 0 X3 > 0 X4 2 0...
5 answers
Samsung electronies produces cell phones 0l type SC and SIO The price is ESO Tor S9 and E90 for SIO Two time constraints result irom the use of AWO produetive Machine Mi and Mz: Mi needs 3 min t0 produce S9 and min for SIO Mz necds 6 mir for S9 and 3 mnin for SIO. Delermine production ligures % und Tz for S9 ard SIO respectively (number ol celi phones produced per hour) S0 that Ihe hourly revenue 2 = F() = 50X1 + %0Xz is maximum
Samsung electronies produces cell phones 0l type SC and SIO The price is ESO Tor S9 and E90 for SIO Two time constraints result irom the use of AWO produetive Machine Mi and Mz: Mi needs 3 min t0 produce S9 and min for SIO Mz necds 6 mir for S9 and 3 mnin for SIO. Delermine production ligures % und ...
1 answers
Determine the truth value of each statement. The domain of discourse is $\mathbf{R} \times \mathbf{R}$. Justify your answers. $$ \forall x \exists y\left(x^{2}+y^{2} \geq 0\right) $$
Determine the truth value of each statement. The domain of discourse is $\mathbf{R} \times \mathbf{R}$. Justify your answers. $$ \forall x \exists y\left(x^{2}+y^{2} \geq 0\right) $$...
1 answers
Refer to Figure 32.51 and prove that the arc of the primary rainbow represents the $42^{\circ}$ angle from the direction of the sunlight.
Refer to Figure 32.51 and prove that the arc of the primary rainbow represents the $42^{\circ}$ angle from the direction of the sunlight....
1 answers
Mental Math Find each product. $$ 2\left[\begin{array}{rr}{-1} & {4} \\ {2} & {5}\end{array}\right] $$
Mental Math Find each product. $$ 2\left[\begin{array}{rr}{-1} & {4} \\ {2} & {5}\end{array}\right] $$...
5 answers
Lab 7: towards you? methane, which hydrogen is coming In this three-dimensional structure ofH14H7Cuhz H 30 1-20H-40m1-10#-3
Lab 7: towards you? methane, which hydrogen is coming In this three-dimensional structure of H1 4H7 Cuhz H 3 0 1-2 0H-4 0m1-1 0#-3...
5 answers
"IIR'Nu:RIIExplain what effect the factors below have during an Svl reaction:Strength of Nucleophile?Steric effects on Nucleophile?Leaving Group effects?Substitucnt cffects of electrophile?Stereochemistry:CmICH3HaClls C-100"50%50%27 Was the absolutc stcrcochemistry of the starting material R or S?28. Is the absolutc stercochemistry of the product(s) R or 52Explain29 Thus; Sx [ mechanisms will give uSmixture:R'IliutH_CIliats
"IIR' Nu: RII Explain what effect the factors below have during an Svl reaction: Strength of Nucleophile? Steric effects on Nucleophile? Leaving Group effects? Substitucnt cffects of electrophile? Stereochemistry: CmICH3 HaClls C- 100" 50% 50% 27 Was the absolutc stcrcochemistry of th...
5 answers
Solve △ABC if the following information is given. roundangle measurements to the nearest tenth of a degree. round sidelength to the nearest hundredth. also, if the triangle exists, findits area. 1.) a = 3, ⊾A = 10°, b = 4
Solve △ABC if the following information is given. round angle measurements to the nearest tenth of a degree. round side length to the nearest hundredth. also, if the triangle exists, find its area. 1.) a = 3, ⊾A = 10°, b = 4...
5 answers
Use logarithmic differentiation to find the derivative of the function (cos(3x)}
Use logarithmic differentiation to find the derivative of the function (cos(3x)}...
5 answers
Answer each of the following "true" "false" giving explanations for your answer: In the vector field F = (y,-x), F(x,0) is parallel to the vector j for all x < 0.b) Ifflx,y) -xy point (3 ,and 96,Y)4y, then Vf is orthogonal to Fg
Answer each of the following "true" "false" giving explanations for your answer: In the vector field F = (y,-x), F(x,0) is parallel to the vector j for all x < 0. b) Ifflx,y) -xy point (3 , and 96,Y) 4y, then Vf is orthogonal to Fg...
5 answers
Find the limit;12_41-21 lim_ T21r=6J' 16X-24 6) Iimu 21'-3n-5
Find the limit; 12_41-21 lim_ T21r=6 J' 16X-24 6) Iimu 21'-3n-5...

-- 0.023979--