Organometallic Compounds
241 questions in this chapter, page 1 of 5.
Study loop for Organometallic Compounds
1. Practise the PYQsPrevious-year questions, with answers
18 Electron Rule
ABC26IN1345 · Among the metals Mn, Fe, Co and Ni, the ones those would react in its native form directly with CO giving metal carbonyl compounds are: · DEC 2011
ABC26IN0492 · W(CO)6 reacts with MeLi to give an intermediate which upon treatment with CH2 N2 gives compound X. X is represented as · 2005-2021
ABC26IN1349 · The correct combination of metal, number of carbonyl ligands and the charge for a metal carbonyl complex [M(CO)x]z- that satisfies the 18… · DEC 2011
ABC26IN0233 · The complex that DOES NOT obey 18- electron rule is: · 2012
ABC26IN0517 · According to polyhedral electron count rule, the structure of Rh6(CO)16 is: · 2005-2021
ABC26IN0525 · [CpMoCl2]2 obeys the 18 electron rule. The correct structure of this compound is (atomic number of Mo = 42) · 2005-2021
ABC26IN0240 · In a cluster, H3CoRu3(CO)12 total number of electrons considered to be involved in its formation is · 2013
ABC26IN1381 · In a cluster, H3CoRu3(CO)12 total number of electrons considered to be involved in its formation is · DEC 2013
ABC26IN0529 · Based on Wade's rule, the structure-type of [B5 H8]-is · 2005-2021
ABC26IN1391 · The oxidation state of Ni and the number of metal-metal bonds in [Ni2(CO)6]2- that are consistent with the 18 electron rule are · JUNE 2014
ABC26IN0538 · The geometry and the number of unpaired electrons in tetrakis (1 - norbornyl)Co respectively, are: · 2005-2021
ABC26IN1393 · The total valence electron count and the structure type adopted by the complex [Fe3(CO)15C] respectively, are · JUNE 2014
ABC26IN0540 · The Mo-Mo bond order in [ (eta 5-C5 H5) Mo(CO)2]2 which obeys the 18-electron rule is ____ · 2005-2021
ABC26IN1405 · According to Wade's rule, anion C2 B9 H12 adopts · DEC 2014
ABC26IN0247 · Complexes HM(CO)5 and [((eta 5-C5H5)M'(CO)3]2 obey the 18-electron rule. Identify M and M' and their 1H NMR chemical shifts relative to TMS. · 2014
ABC26IN1407 · Complexes HM(CO)5 and [ (eta 5-C5 H5) M′(CO)3]2 obey the 18-electron rule. Identify M and M′ and their 1H NMR chemical shifts relative to… · DEC 2014
ABC26IN0248 · The refluxing of RhCl3 · 3H2O with an excess of PPh3, in ethanol gives a complex A. Complex A and the valence electron count on rhodium… · 2015 self-practice
ABC26IN1411 · The refluxing of RhCl3.3 H2 O with an excess of PPh3, in ethanol gives a complex A. Complex A and the valence electron count on rhodium… · JUNE 2015
ABC26IN1429 · The number of valence electrons provided by [Ru(CO)3] fragment towards cluster bonding is · DEC 2015
ABC26IN1433 · Identify the species, those obey the 18 electron rule, from the following: (A) (B) (C) (D) · DEC 2015
ABC26IN0263 · Choose the isoelectronic pair among the following: A. [V(CO)6] B. [Cu(eta 5-C5H5)(CO)] C. [Co(CO)4]^- D. [IrCl(CO)(PPh3)] · 2017
ABC26IN1455 · Choose the isoelectronic pair among the following: A. [V(CO)6] B. [Cu(eta 5-C5H5)(CO)] C. [Co(CO)4]- D. [IrCl(CO)(PPh3)] · JUNE 2017
ABC26IN1458 · The number of bonding molecular orbitals and the number of available skeletal electrons in [B6 H6]2-, respectively, are: · JUNE 2017
ABC26IN1460 · The mu eff [Fe(S2CNEt2)3] changes with temperature with the involvement of two electronic states. The states are · JUNE 2017
ABC26IN0277 · The number of Ni-Ni bonds in [CpNi(mu -PPh2)]2 complex obeying the 18 electron rule is · 2018
ABC26IN1483 · The number of Ni-Ni bonds in [CpNi (mu -PPh2)]2 complex obeying the 18 electron rule is · JUNE 2019
ABC26IN1486 · The correct statements about [Ru6 C(CO)17] cluster from the following (1) it is an 86 electron cluster (2) it is a closo structure type (3)… · JUNE 2019
ABC26IN1504 · Consider following statement(s) in the context of NO and CO ligands A. In the bent mode, NO donates three electrons to the metal center. B… · JUNE 2021
Carbene Carbyne
ABC26IN0503 · Schrock carbenes are · 2005-2021
ABC26IN1410 · For typical Fischer and Schrock carbenes, consider the following statements A. Oxidation state of metal is low in Fischer carbene and high… · JUNE 2015
Cluster Compounds Wade Rules
ABC26IN0488 · Codes: · 2005-2021
ABC26IN1346 · In the H2 Ru6(CO)18 cluster, containing 8-coordinated Ru centers, the hydrogen atoms are · JUNE 2011
ABC26IN1351 · Reaction of Fe(CO)5 with OH leads to complex A which on oxidation with MnO2 gives B. Compounds A and B respectively are · DEC 2011
ABC26IN0497 · The catalyst used in the conversion of ethylene to acetaldehyde using Wacker process is · 2005-2021
ABC26IN0505 · The correct order of vco for the compounds [Mo(CO)3 (NMe3)3], [Mo(CO)3 (P(OPh)3)3], [Mo(CO)3(PMe)3], [Mo(CO)3 (PCl3)3] in the IR spectrum… · 2005-2021
ABC26IN1361 · The cluster having arachno type structure is: · JUNE 2012
ABC26IN0506 · In the reaction, Ph3 P MeI[X] n-BuLi[Y], the compounds X and Y, respectively are · 2005-2021
ABC26IN0511 · Structurally nickellocene is similar to ferrocene. Nickellocene attains stability due to the formation of · 2005-2021
ABC26IN1368 · In the cluster [Co3(CH)(CO)9] obeying 18e rule, the number of metal-metal bonds and the bridging ligands respectively, are · DEC 2012
ABC26IN0521 · The correct order of thermal stability for the given compounds is · 2005-2021
ABC26IN0526 · Among the given boranes and heteroboranes, the example which belongs to 'closo' type is · 2005-2021 self-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 Co4(CO)12 and Ir4(CO)12 is · DEC 2013 self-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 [ (eta 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