Organometallic Compounds

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

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, (1) nido-, nido (2) nido-, closo (3) closo-, nido (4) closo-… · 2019 self-practice

ABC26IN1494 · The cluster types of [Fe5(CO)14 N]-and [Co6(CO)13 N]-are, respectively, · DEC 2019

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

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

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

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 (1) Fe(eta 5-Cp)2 > Co(eta 5-Cp)2 > Ni(eta 5-Cp)2 (2) Fe(eta 5-Cp)2 > Ni(eta 5-Cp)2 > Co(eta… · 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

ABC26IN0259 · Correct order of M-C bond length of metallocenes (a-c) 1. [Fe(eta 5-Cp)2] 2. [Ni(eta 5-Cp)2] 3. [Co(eta 5-Cp)2] is— · 2016

ABC26IN0227 · Oxidation occurs very easily in case of · JUNE 2011

ABC26IN0487 · The value of M-C stretching frequencies of (i) [V(CO)6]-, (ii) [Cr(CO)6] and (iii) [Mn(CO)6]+following the trend · 2005-2021

ABC26IN1344 · Oxidation occurs very easily in case of · JUNE 2011

ABC26IN0490 · [Co(CO)4] is isolobal with · 2005-2021

ABC26IN0491 · The CORRECT order of the CO stretching vibrational frequency is · 2005-2021

ABC26IN0493 · Considering the quadrupolar nature of M-M bond in [Re2Cl8]2-, the M-M bond order in [Re2Cl4 (PMe2Ph)4]+ and [Re2Cl4 (PMe2Ph)4] respectively… · 2005-2021

ABC26IN1350 · The stable cyclopentadienyl complex of beryllium is · DEC 2011

ABC26IN0495 · The correct classification of [B5H5]2-, B5H9 and B5H11 respectively is · 2005-2021

ABC26IN0229 · In the trans-PtCl2L(CO) complex, the CO stretching frequency for L = NH3, pyridine, NMe3 decreases in the order. · 2011

ABC26IN1353 · In the trans- PtCl2 L(CO) complex, the CO stretching frequency for L=NH3, pyridine, NMe3 decreases in the order. · DEC 2011

ABC26IN0498 · Zeise's salt is represented as · 2005-2021

ABC26IN0500 · The Bronsted acidity of boron hydrides follows the order · 2005-2021

ABC26IN0501 · White phosphorus, P4, belongs to the · 2005-2021

ABC26IN1357 · The reactions of Ni(CO)4 with the ligand (L=PMe3. or.P(OMe)3) L yields Ni(CO)3 L. The reaction is · JUNE 2012

ABC26IN0502 · The number of M-M bonds in Ir4(CO)12 are · 2005-2021

ABC26IN1358 · Among the following the strongest oxidizing agent is: · JUNE 2012

ABC26IN1359 · For the reaction, trans- [IrCl(CO) (PPh3)2]+Cl2 → trans - [IrCl3(CO) (PPh3)2] the correct observation · JUNE 2012