ABC26IN0485 · The neutral complex which follows the 18 -electron rule is · 2005-2021self-practice
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
ABC26IN0230 · A compound A having the composition FeC9H8O3 shows one signal at 2.5 ppm and another one around 5.0 ppm in its 1H NMR spectrum. The IR… · 2011
ABC26IN0232 · The cluster having arachno type structure is: · 2012self-practice
ABC26IN0233 · The complex that DOES NOT obey 18- electron rule is: · 2012
ABC26IN1364 · The complex that DOES NOT obey 18 - electron rule is: · JUNE 2012
ABC26IN1366 · The molecule 3 Follow 18 electron rule. The two ' M ' satisfying the condition are · DEC 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
ABC26IN0535 · The CORRECT combination of L1 and L2 among H-, NO-, MeCH2- and CO , that will satisfy the 18 electron rule for both metal centers in the… · 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 [ (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 [((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 [ (5-C5 H5 ) M(CO)3 ]2 obey the 18-electron rule. Identify M and M and their 1H NMR chemical shifts relative to TMS. · 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 are… · 2015self-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
ABC26IN1446 · The number of bridging ligand(s) and metal-metal bond(s) present in the complex [Ru2(5-Cp)2(CO)2(Ph2PCH2PPh2) ] (obeys 18-electron rule)… · DEC 2016
ABC26IN0263 · Choose the isoelectronic pair among the following: A. [V(CO)6] B. [Cu(5-\,C5H5)\,(CO)] C. [Co(CO)4]- D. [IrCl\,(CO)(PPh3)] · 2017
ABC26IN1455 · Choose the isoelectronic pair among the following: arrayll A. [V(CO)6 ] & B. [Cu(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 [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… · JUNE 2019
ABC26IN1498 · The correct electronic configuration of frontier MO's of Mn (5-C5 Me5 ) is · DEC 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
ABC26IN1505 · Consider the following statement (s) in the context of organometallic complex (x) X A. The carbene ligand donates two electrons to the… · JUNE 2021
ABC26IN1410 · For typical Fischer and Schrock carbenes, consider the following statements arrayl A. Oxidation state of metal is low in Fischer carbene… · JUNE 2015
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… · 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
ABC26IN0507 · The compounds M and N , respectively, are · 2005-2021
ABC26IN0508 · The compounds O and P , 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