Organometallic Compounds

ABC26IN1408 · The binding modes of NO in 18 electron compounds [Co(CO)3(NO)] and [Ni(eta 5-Cp)(NO)], respectively, are · JUNE 2015

ABC26IN0251 · According to Wade's theory the anion [B12H12]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. In… · JUNE 2015

ABC26IN0254 · Amongst the following (A) [Mn(eta 5-Cp)(CO)3] (B) [Os(eta 5-Cp)2] (C) [Ru(eta 5-Cp)2] and (D) [Fe(eta 5-Cp)2] the compounds with most… · 2015

ABC26IN1418 · Amongst the following (A) [Mn (eta 5-Cp)(CO)3] (B) [Os (eta 5-Cp)2] (C) [Ru (eta 5-Cp)2] and (D) [Fe (eta 5-Cp)2] the compounds with most… · 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 does… · 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

ABC26IN1451 · According to Wade's rules, the correct structural types of [Co (eta 5-C5 H5) B4 H8] and [Mn (eta 2-B3 H8)(CO)4] are · DEC 2016

ABC26IN1463 · Among the following species isolobal to CH2 are A. CpCr(CO)2 B. CpCu C. Ni(CO)2 D. Cr(CO)4 E. Fe(CO)4 · DEC 2017

ABC26IN1465 · According to Wade's rules, the cluster type and geometry of [Sn9]4-, respectively, are · DEC 2017

ABC26IN1469 · Which of the following are NOT closo clusters? [ {Co(eta 5-C5H5)}2(C2B6H8)](A) [B4C2H8](B) [B10H13{Au(PPh3)}](C) [C2B8H10](D) · JUNE 2018

ABC26IN1472 · The reaction of [(eta 5-C5H5 (Fe(CO)2)]- with CH3I gives compound A. The 1H NMR spectrum of A show two singlets in an integrated intensity… · 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

ABC26IN0284 · The cluster types of [Fe5(CO)14N]^- and [Co6(CO)13N]^- are, respectively, · 2019 self-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 2019 self-practice

ABC26IN1500 · The geometry/shape of the Fe4 core of the cluster [Fe4 C(CO)12]2- is · 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

ABC26IN1509 · The structure of the reactive intermediate generated by the reaction of CHCl3 and KOH is · JUNE 2021

ABC26IN0523 · An efficient catalyst for hdrogenation of alkenes is [Rh (PPh3)3 Cl]. However, [Ir (PPh3)3 Cl] does not catalyze this reaction, because · 2005-2021

ABC26IN0242 · The electrophile Ph3C reacts with [(eta 5-C5H5)Fe(CO)2(CDMe2)]+ to give a product A. The product A is formed because · 2013

ABC26IN1384 · The electrophile Ph3 C reacts with [ (eta 5-C5 H5) Fe(CO)2 (CDMe2)]+to give a product A. The product A is formed because · DEC 2013

ABC26IN1447 · The rate of alkene coordination to [PtCl4]2- is highest for · DEC 2016

ABC26IN1343 · Identify the order according to increasing stability of the following organometallic TiMe4, Ti (CH2 Ph)4, Ti(i-Pr)4, and TiEt4(Me= methyl… · JUNE 2011

ABC26IN0228 · Complex in which organic ligand is having only sigma -bond with metal is: · JUNE 2011

ABC26IN1352 · The number of metal-metal bonds in the dimers, [CpFe(CO)(NO)]2 and [CpMo(CO)3]2 respectively, are · DEC 2011

ABC26IN0499 · Metal-metal quadruple bonds are well-known for the metal · 2005-2021

ABC26IN0512 · The total number of metal-metal bonds in Ru3(CO)12 and Co4(CO)12, respectively, is · 2005-2021

ABC26IN0520 · Amonst the following, the metal carbonyl species having the highest vCO stretching frequency is · 2005-2021

ABC26IN1377 · The number of metal-metal bonds in [W2(OPh)6] is: · JUNE 2013

ABC26IN0239 · The number of metal-metal bonds in Ir4(CO)12 is · 2013

ABC26IN1378 · The number of metal-metal bonds in Ir4(CO)12 is · JUNE 2013

ABC26IN1379 · The bond order of the metal-metal bond in the dimeric complex [Re2Cl4(PMe2Ph)4] is · DEC 2013

ABC26IN1392 · The compound [Re2 (Me2 PPh)2 Cl4](M) having a configuration of sigma 2 pi 4 delta 2 delta *2 can be oxidized to M+ and M2+. The formal… · JUNE 2014

ABC26IN0539 · The metal borides that contain isolated boron atoms are: · 2005-2021

ABC26IN1394 · 1H NMR spectrum of [ eta 5-C5H5Rh)(C2H4)2] at -20°C shows a typical AA' XX' pattern in the olefinic region. On increasing the temperature… · JUNE 2014

ABC26IN1428 · The final products of the reaction of carbonyl metalates [V(CO)6]- and [Co(CO)4]- with H3 PO4 respectively, are · DEC 2015

ABC26IN1436 · The number of metal-metal bonds in [Co2 Fe2(CO)11 (eta 4-PPh)2] is · DEC 2015

ABC26IN1456 · An organometallic fragment that is isolobal to CH3 +is · JUNE 2017

ABC26IN1489 · Considering sigma -bonding only, in the MO diagram of a metal complex with trigonal bipyramidal (TBP) geometry, the d-orbitals which remain… · JUNE 2019

ABC26IN0282 · The correct order of metal-carbon distance is · 2019 self-practice

ABC26IN1492 · The correct order of metal-carbon distance is · DEC 2019

ABC26IN1396 · The hepticities 'x' and 'y' of the arene moieties in the diamagnetic complex [ (eta x-C6 H6) Ru (eta y-C6 H6)] respectively are · DEC 2014