Organometallic Compounds

ABC26IN1362 · The final product of the reaction [Mn(CO)6]+ + MeLi → is: · JUNE 2012

ABC26IN1365 · The substitution of eta 5-Cp group with nitric oxide is the easiest for · DEC 2012

ABC26IN0510 · The reaction between {PdCl4]2- and C2H4 produces a new compound. Compare to free C2H4, the C-C bond order of the product is: · 2005-2021

ABC26IN0513 · The product of the reaction between CH3 Mn(CO)5 and 13 CO is: · 2005-2021

ABC26IN0514 · The number of terminal carbonyl groups present in Fe2(CO)9 is · 2005-2021

ABC26IN0515 · An intermediate formed during the hydroformylation of olefins using Co2(CO)8 as catalyst is · 2005-2021

ABC26IN0516 · Decarbonylation reaction of [cis- (CH3 CO) Mn (13 CO)(CO)4] yields X, Y and Z, where X= [(CH3) Mn(CO)5]; Y= [cis-(CH3) Mn (13 CO) CO4]; Z=… · 2005-2021

ABC26IN0518 · An example of nido-borane from the following is · 2005-2021

ABC26IN0237 · The ligand in uranocene is: · 2013

ABC26IN0519 · The reaction of [Cp2 TaMe2] I (Cp=C5 H5-)with NaOMe yields. · 2005-2021

ABC26IN1374 · The oxidation state of molybdenum in [ (eta 7 -tropylium) Mo(CO)3]+is: · JUNE 2013

ABC26IN1376 · The orders of reactivity of ligands, NMe3 PMe3, and CO with complexes MeTiCl, and (CO)5 Mo (thf) are · JUNE 2013

ABC26IN0524 · When one CO group is replaced by PPh3 in [Cr(CO)6], which one of the following statement is TRUE? · 2005-2021

ABC26IN1380 · Which of the following in NOT suitable as catalyst for hydroformylation? · DEC 2013

ABC26IN0527 · The hapticity of cycloheptatriene, (C7 H8), in Mo (C7 H8)(CO)3 is ____ · 2005-2021 self-practice

ABC26IN0528 · The structure type and shape of the polyhedral (skeletal) framework of the carborane Me2C2B10H10, respectively, are · 2005-2021

ABC26IN0241 · The correct statement regarding terminal/bridging CO groups in solid Co4(CO)12 and Ir4(CO)12 is · 2013

ABC26IN0530 · The reaction of equimolar quantities of Fe(CO)5 and OH-gives a complex species X which on further reaction with MnO2 give species Y. X and… · 2005-2021

ABC26IN0534 · The CORRECT statement regarding the substitution of coordinated ligands in Ni(CO)4 and Co(NO)(CO)3 is: (Given: Co–N–O bond is nearly… · 2005-2021

ABC26IN1389 · The ligand(s) that is (are) fluxional in [(eta 5-C5H5)(eta -C5H5)Fe(CO)2] in the temperature range 221-298K, is (are) · JUNE 2014

ABC26IN0244 · Amongst the following which is not isolobal pairs · 2014

ABC26IN1395 · Amongst the following which is not isolobal pairs · JUNE 2014

ABC26IN1398 · The product of the reaction of propene, CO and H2 in the presence of Co2(CO)8 as a catalyst is · DEC 2014

ABC26IN1404 · 1H NMR spectrum of free benzene shows a peak at -7.2 ppm. The expected chemical shift (in ppm) of C6H6 ligand in 1H NMR spectrum of [ (eta… · DEC 2014

ABC26IN1409 · The role of copper salt as co-catalyst in Wacker process is · JUNE 2015

ABC26IN1416 · The following statements are given regarding the agostic interaction C-H----Ir observed in [Ir (Ph3 P)3 Cl]. (A) Upfield shift of C-H… · JUNE 2015

ABC26IN1423 · The W-W bond order in [W (eta 5-C5 H5)(mu -Cl)(CO)2]2 is · DEC 2015

ABC26IN1424 · For the reaction of [Fe (eta 5-C5 H5) (CH3)(CO)2] with PMe3, the main intermediate is · DEC 2015

ABC26IN1427 · For uranocene, the correct statement(s) is/are · DEC 2015

ABC26IN0258 · The approximate positions of nu co bands (cm-1) in the solid-state infrared spectrum and the Fe-Fe bond order in [Fe(eta 5-C5H5)(mu… · 2015

ABC26IN1435 · CpM [Cp. is. (eta 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 (eta 4-C8 H8)(CO)3] at 23°C consists of a sharp single line. The number of signals observed at low temperature… · 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 2016 self-practice

ABC26IN1452 · The correct geometry of [Rh6 C(CO)15]2- is · DEC 2016

ABC26IN1466 · The correct of C-O bond length is · 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

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

ABC26IN0276 · The hydrocarbon having an analogous structure to that of P4O6 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

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 · 2019 self-practice

ABC26IN0281 · The most stable vanadium species in aqueous medium is (1) [V(H2O)5(OH)]+2 (2) [VO(H2O)5]+2 (3) [VO(H2O)5]+ (4) [V(H2O)4(OH)2]+2 · 2019 self-practice

ABC26IN1491 · The most stable vanadium species in aqueous medium is · DEC 2019

ABC26IN0286 · Among the following complexes, the one showing the highest rate of substitution of a CO ligand on heating with one equivalent of PPh3 in… · 2020