ABC26IN1369 · Consider the catalyst in column-I and reaction in column-II 4 The best match of a catalyst of column-I with the reaction nuclear column-II… · DEC 2012
ABC26IN0521 · The correct order of thermal stability for the given compounds is · 2005-2021
ABC26IN0522 · In Monsanto acetic acid process shown below, the role of HI is CH3 OH+CO [180 C, 30 bar ]Rh() catlyst/HI CH3 CO2 H · 2005-2021
ABC26IN0526 · Among the given boranes and heteroboranes, the example which belongs to 'closo' type is · 2005-2021self-practice
ABC26IN1382 · Among the following clusters, A= [(H) Co6(CO)15 ] B= [(H)2 Os6(CO)18 ] C= [(H)2 Os5(CO)16 ] H is encapsulated in · DEC 2013
ABC26IN1383 · The correct statement regarding terminal/bridging CO groups in solid mathrmCo4(CO)12 and mathrmIr4(CO)12 is · DEC 2013self-practice
ABC26IN0533 · The correct molecular representation of W(Cp)2(CO)2 is (Cp=cyclopentadienyl) · 2005-2021
ABC26IN1388 · On reducing Fe3(CO)12 with an excess of sodium, a carbonylate ion is formed. The iron is isoelectronic with · DEC 2013
ABC26IN0537 · Among the following, [B12 H12 ]2-, [Ni5(CO)12 ]2-, [C2 B9 H11 ]2-, Rh6(CO)16, Os6(CO)20, B5 H11, B6 H10 the total number of species having… · 2005-2021
ABC26IN1397 · The rate of the reaction Ni(CO)4+PPh3 Delta [Ni(CO)3 (PPh3 ) ]+CO depends on · DEC 2014
ABC26IN1402 · Na [ (5-C5H5 )Fe(CO)2 ] reacts with Br2 to give A. Reaction of A with LiAlH4 results in B. The proton NMR spectrum of B consists of two… · DEC 2014
ABC26IN1406 · The final product in the reaction of [Cp*2ThH] with CO in an equimolar ratio is · DEC 2014
ABC26IN1408 · The binding modes of NO in 18 electron compounds [Co(CO)3(NO)] and [Ni(5-Cp)(NO)], respectively, are · JUNE 2015
ABC26IN1413 · The reaction [Co(CN)5 H2 O ]2-+X- [Co(CN)5 X ]2-+H2 O follows a/an · JUNE 2015
ABC26IN0251 · According to Wade's theory the anion [B12 H12 ]2- adopts · 2015
ABC26IN1414 · According to Wade's theory the anion [B12 H12 ]2- adopts · JUNE 2015
ABC26IN0252 · The reaction of SbCl3, with 3 equivalents of EtMgBr yields compound X. Two equivalents of SbI3 react with one equivalent of X to give Y. In… · 2015
ABC26IN1415 · The reaction of SbCl3, with 3 equivalents of EtMgBr yields compound X . Two equivalents of SbI3 react with one equivalent of X to give Y… · JUNE 2015
ABC26IN0254 · Amongst the following (A) [Mn(5-Cp)(CO)3] (B) [Os\,(5-Cp)2] (C) [Ru\,(5-Cp)2] and (D) [Fe(5-Cp)2] the compounds with most shielded and… · 2015
ABC26IN1418 · Amongst the following arrayll (A) [Mn (5-Cp )(CO)3 ] & (B) [Os (5-Cp )2 ] \\ (C) [Ru (5-Cp )2 ] and & (D) [Fe (5-Cp )2 ] array the… · JUNE 2015
ABC26IN1419 · Total number of vertices in metal clusters [Ru6(C)(CO)17 ] [Os5(C)(CO)15 ] and [Ru5(C)(CO)16 ] are 6,5 and 5, respectively. The predicted… · JUNE 2015
ABC26IN1425 · [(eta3-mathrmC3H5)mathrmMn(CO)4] shows fluxional behavior. The 1mathrmH NMR spectrum of this compound when it is in the non-fluxional state… · DEC 2015
ABC26IN0256 · Using Wade's rules predict the structure type of [C2B5H7] · 2015
ABC26IN1426 · Using Wade's rules predict the structure type of [C2 B5 H7 ] · DEC 2015
ABC26IN1431 · Reaction of [Mn2(CO)10 ], with I2, results in A without loss of CO. Compound A, on heating of 120 C loses a CO ligand to give B , which… · DEC 2015
ABC26IN1432 · The approximate positions of vco bands (cm-1 ) in the solid-state infrared spectrum and the Fe-Fe bond order in [Fe (5-C5 H5 )( mu -CO)(CO)… · DEC 2015
ABC26IN1440 · The numbers of skeletal electrons present in the compounds C2 B3 H5, C2 B4 H6, and B5 H9 are, respectively · DEC 2015
ABC26IN1441 · For fluxional Fe(CO)5 (structure given below) in solution, the exchange of numbered CO groups will be between 14 · DEC 2015
ABC26IN1445 · A plausible intermediate involved in the self metathesis reaction of C5H5-C C-C6H4-p\ Me catalyzed by [(tBuO)3W C-tBu] is · DEC 2015
ABC26IN1451 · According to Wade's rules, the correct structural types of [Co (5-C5 H5 ) B4 H8 ] and [Mn (2-B3 H8 )(CO)4 ] are · DEC 2016
ABC26IN1453 · Product A in the following reaction is 16 · DEC 2016
ABC26IN1463 · Among the following species isolobal to CH2 are arrayll A. CpCr(CO)2 & B. CpCu \\ C. Ni(CO)2 & D. Cr(CO)4 \\ E. Fe(CO)4 & array · DEC 2017
ABC26IN1465 · According to Wade's rules, the cluster type and geometry of [Sn9 ]4-, respectively, are · DEC 2017
ABC26IN1467 · For the following reaction +\ 13CO The structure of the intermediate is · JUNE 2018
ABC26IN1469 · Which of the following are NOT closo clusters? [ \Co(5-C5H5) \2(C2B6H8) ](A)\; [B4C2H8 ](B)\; [B10H13\Au(PPh3)\ ](C)\; [C2B8H10 ](D) · JUNE 2018
ABC26IN0272 · The reaction of [(5-C5H5)(Fe(CO)2]- with CH3I gives compound A. The 1H NMR spectrum of A show two singlets in an integrated intensity ratio… · 2018
ABC26IN1472 · The reaction of [(5-C5H5)Fe(CO)2]- with CH3I gives compound A. The 1H NMR spectrum of A shows two singlets in an integrated intensity ratio… · JUNE 2018
ABC26IN1476 · Identify the correct statement(s) for H3B.CO (A) sp2 hybridized orbital of B accepts the lone pair of CO. (B) Its vCO value is more than… · DEC 2018
ABC26IN1480 · The cluster type and geometry of the species [Rh9 P(CO)21 ]2- are · DEC 2018
ABC26IN1481 · Hydroformylation of 1-propene with [HRh(CO)L2] leads to linear and branched formylated products. The linear hydroformylated product is… · DEC 2018
ABC26IN1488 · Consider the following reactions: 23 The reaction(s) which will NOT produce ethane as a product is/are · JUNE 2019
ABC26IN0284 · The cluster types of [Fe5(CO)14N]- and [Co6(CO)13N]- are, respectively, · 2019self-practice
ABC26IN1494 · The cluster types of [Fe5(CO)14 N ]-and [Co6(CO)13 N ]-are, respectively, · DEC 2019
ABC26IN1495 · The main product of nucleoplallic attack of H- on the complex ion given below is · DEC 2019self-practice
ABC26IN1500 · The geometry/shape of the Fe4 core of the cluster [Fe4 C(CO)12 ]2- is · DEC 2019
ABC26IN1501 · The product A of the following reaction is · DEC 2019
ABC26IN1503 · The infrared (IR) spectrum of the product A for the following reaction CO(g) A shows three STRONG bands at 1986, 1935 and 1601\,cm-1. The… · DEC 2019
ABC26IN1506 · The correct geometries for the metal carbonyl clusters, A-C A. [Ru6(CO)17B ]- B. [Os6(CO)18P ]- C. [Os4(CO)16 ] are · JUNE 2021
ABC26IN1507 · Identify the thermodynamically stable structure of [(5-C5H5)Fe( mu -CO)(NO)]2 · JUNE 2021
ABC26IN1509 · The structure of the reactive intermediate generated by the reaction of CHCl3 and KOH is · JUNE 2021