ABC26IN1416 · The following statements are given regarding the agostic interaction C-H----Ir observed in [Ir (Ph3 P )3 Cl ]. arrayl (A) Upfield shift of… · JUNE 2015
ABC26IN0253 · Match column A (coupling reactions) with column B (reagents) The correct match is: · 2015
ABC26IN1417 · Match column A (coupling reactions) with column B (reagents) The correct match is: · JUNE 2015
ABC26IN1422 · With respect to sigma and pi bonding in Pt III in the structure given below, which of the following represent the correct bonding diagram · JUNE 2015
ABC26IN1423 · The W-W bond order in [W (5-C5 H5 )( mu -Cl)(CO)2 ]2 is · DEC 2015
ABC26IN1424 · For the reaction of [Fe (5-C5 H5 ) (CH3 )(CO)2 ] with PMe3, the main intermediate is · DEC 2015
ABC26IN0255 · [(3-C3H5)Mn(CO)4] shows fluxional behavior. The 'H NMR spectrum of this compound when it is in the non-fluxional state shows- · 2015
ABC26IN1427 · For uranocene, the correct statement(s) is/are · DEC 2015
ABC26IN1430 · The intermediate and the final major product of photolysis of Z (Z) From the following are (A) (B) (C) (D) · DEC 2015
ABC26IN0258 · The approximate positions of bands (cm-1) in the solid-state infrared spectrum and the Fe-Fe bond order in [Fe(5-C5H5)( mu -CO)(CO)]2… · 2015
ABC26IN1435 · CpM [Cp . is . (5-C5 H5 ) ] fragment isolobal with a BH fragment is · DEC 2015
ABC26IN1437 · Choose the correct option for carbonyl fluoride with respect to bond angle and bond length · DEC 2015
ABC26IN1439 · The 1H NMR spectrum of [Ru (4-C8 H8 )(CO)3 ] at 23 consists of a sharp single line. The number of signals observed at low temperature… · DEC 2015
ABC26IN0260 · For fluxional Fe(CO)5 (structure given below) in solution, the exchange of numbered CO groups will be between · 2016
ABC26IN1442 · In the following reaction sequence arrayl HNEt2+CS2 KOH P aq. soln R \\ I2 [CpMo(CO)3]2 S array Where dtc = dithiocarbamate and tds =… · DEC 2015self-practice
ABC26IN1443 · Reaction of Cr(CO)6 with LiC6H5 gives A which reacts with [MeO][BF] to give B. The structures of A and B respectively, are · DEC 2015
ABC26IN1448 · Consider the following statements, I and II: I : [Rh(CO)2 I2 ]- catalytically converts CH3 I and CO to CH3 COI II : [Rh(CO)2 I2 ]- is… · DEC 2016
ABC26IN1449 · The geometry of [ReH9 ]2- is · DEC 2016self-practice
ABC26IN1450 · According to isolobal analogy, the right set of fragments that might replace Co(CO)3 in [Co4(CO)12 ] is · DEC 2016
ABC26IN1452 · The correct geometry of [Rh6 C(CO)15 ]2- is · DEC 2016
ABC26IN0262 · Product A in the following reaction is + A · 2016
ABC26IN1454 · Treatment of Fe(CO)5 with 1,3-butadiene gives B that shows two signals in its 1H NMR spectrum. B on treatment with HCl yields C which shows… · JUNE 2017
ABC26IN0265 · Identify the product in the reaction between · 2017self-practice
ABC26IN1461 · Identify the product in the reaction between and CH3I going at room temperature via SN2 mechanism · JUNE 2017
ABC26IN0266 · In trigonal prismatic ligand field, the most stabilized d orbital is · 2017
ABC26IN1462 · In trigonal prismatic ligand field, the most stabilized d orbital is · DEC 2017
ABC26IN0268 · The correct of C-O bond length is- · 2018self-practice
ABC26IN1466 · The correct of C-O bond length is · JUNE 2018
ABC26IN0269 · For the following reaction + The structure of the intermediate is · 2018self-practice
ABC26IN0270 · The correct increasing order of C-C bond length in the following molecules (A-D) [PtCl3(C2H4)]- (A) , [Pt(PPh3)2\,(C2H4)] (B)… · 2018self-practice
ABC26IN1468 · The correct increasing order of C-C bond length in the following molecules (A-D) [PtCl3 (C2 H4 ) ]-(A), [Pt (PPh3 )2 (C2 H4 ) ](B), [Pt… · JUNE 2018
ABC26IN1470 · Identify the pair of molecules which are isoelecronic as well as isostructural from the following [Pd (PPh3 )4 ](A), [V(CO)6 ](B), [Cr(CO)6… · JUNE 2018
ABC26IN1473 · The structures of [Re2 Cl8 ]2-(A) and [Os2 Cl8 ]2-(B) are made up of two MCl4 units. For these structure which statement is correct? · JUNE 2018
ABC26IN0273 · The correct order of acceptor ability of the phosphorus ligands is · 2018
ABC26IN1475 · The correct order of acceptor ability of the phosphorus ligands is · DEC 2018
ABC26IN0274 · The product for the reaction given below is IrCl(COE)(PMe3)3 (COE = Cyclooctene) + · 2018
ABC26IN1477 · The product for the reaction given below is IrCl(COE)(PMe3)3 (COE = Cyclooctene) + · DEC 2018
ABC26IN1478 · Match the following complexes with their vCO stretching frequency The correct match is · DEC 2018
ABC26IN1479 · The VCN in [Fe(CN)6 ]3-(A) and [Fe(CN)6 ]4-(B) and VCO in [Cr(CO)3 (NH3 )3 ](C) and [Cr(CO)6 ](D) are compared below. The pair with correct… · DEC 2018
ABC26IN0275 · Hydroformylation of 1-propene with [HRh(CO) L2 ] leads to linear and branched formylated products. The linear hydroformylated product is… · 2018self-practice
ABC26IN0276 · The hydrocarbon having an analogous structure to that of P4 O6 is · 2018
ABC26IN1482 · The hydrocarbon having an analogous structure to that of P4 O6 is · DEC 2018
ABC26IN1484 · For the reaction of trans- [IrX(CO)(PPh3)2 ] (X=F, Cl, Br, I) with O2, correct order of variation of rate with X is · JUNE 2019
ABC26IN0278 · The organic species isolobal to [Fe(CO)2 (PPh3 ) ]-is · 2018
ABC26IN1485 · The organic species isolobal to [Fe(CO)2 (PPh3 ) ]-is · JUNE 2019
ABC26IN0279 · A plausible structure of the intermediate involved in the following reaction [Fe(5-C5H5)(CH3)(CO)2] + PPh3… · 2018
ABC26IN1487 · A plausible structure of the intermediate involved in the following reaction [Fe(5-C5H5)(CH3)(CO)2] + PPh3 [Fe(5-C5H5)(C(=O)CH3)(CO)(PPh3)] · JUNE 2019
ABC26IN0280 · The expected number of co bands in the IR spectra of fac-[Mo(PPh3)2(CO)3] and trans-[Mo(PPh3)2(CO)4] are, respectively · 2019self-practice
ABC26IN1490 · The expected number of co bands in the IR spectra of fac- [Mo (PPh3 )2(CO)3 ] and trans- [Mo(PPh3)2(CO)4 ] are, respectively · DEC 2019
ABC26IN0281 · The most stable vanadium species in aqueous medium is · 2019self-practice