Organometallic Compounds

ABC26IN0749 · Metal-carbon multiple bonds in metal carbonyl are preferably identified from the stretching frequency of · 2005-2022

ABC26IN0750 · B2 H6 and B4 H10, respectively, are examples of · 2005-2022

ABC26IN0752 · The Correct order of CO vibrational stretching frequency in the following complexes is (I) (PF3)3 Mo(CO)3 (II) (PCl3)3 Mo(CO)3 (III)… · 2005-2022

ABC26IN0753 · The carbonyl stretching frequency (vC=O) is highest for: · 2005-2022

ABC26IN0755 · For the following reactions, the metal complexes X and Y are (i) Ni(s) [1 atm / 25° C]CO(g) X (ii) FeCl2 2 NaC5 H5 Y · 2005-2022

ABC26IN0757 · The value of 'x' in [Cu(CO)x]+such that it obeys the 18 electron rule is · 2005-2022

ABC26IN0758 · The correct order of vNO (cm-1) in the following compound is · 2005-2022

ABC26IN0759 · The homogeneous catalyst used in water-gas shift reaction is · 2005-2022

ABC26IN0760 · Among the following metal carbonyl species, the one with the highest metal-carbon back bonding is · 2005-2022

ABC26IN0762 · The correct option having one complex from each of the following pairs which is more reactive towards the oxidative addition reaction by… · 2005-2022

ABC26IN0763 · The value of n for the complex [Fe(CO)4 (SiMe3)]n satisfying the 18-electron rule is · 2005-2022 self-practice

ABC26IN0764 · Number of vertices in an icosahedral closo-borane is ____. · 2005-2022

ABC26IN0765 · The order of the M-C bond strength in the following species is (Atomic number for Cr=24, Mn=25, Ti=22, Co=27) · 2005-2022

ABC26IN0767 · The complex which does NOT obey 18 - electron rule is (atomic number for Mn=25, Fe=26, Co=27, Ru=44) · 2005-2022

ABC26IN0769 · The CORRECT order of pKa for the compounds I to IV in water at 298 K is IHCo(CO)4 IIHCo(CO)3(PPh3) IIIHCo(CO)3(P(OPh)3) IVHCo(CO)2(PPh3)2 · 2005-2022

ABC26IN0770 · The complex that does NOT obey the 18-electron rule is (Given: Atomic numbers of Ti, Mn, Ta and Ir are 22, 25, 73 and 77, respectively) · 2005-2022

ABC26IN0771 · The decreasing order of C=C bond length in the following complexes is · 2005-2022

ABC26IN0773 · The structure types of B10 H10 2- and B10 H14, respectively, are · 2005-2022

ABC26IN0774 · The order of increasing CO stretching frequencies in [Co(CO)4]-, [Cu(CO)4]+, [Fe(CO)4]2- and [Ni(CO)4] is · 2005-2022

ABC26IN0775 · The number of CO stretching bands in the infrared spectrum of Fe(CO)5 is · 2005-2022

ABC26IN0225 · The oxidative addition and reductive elimination steps are favoured by · JUNE 2011

ABC26IN1355 · The greater stability of ((CH3)3 C-CH2 -)4 Ti(A) compared to that of ((CH3)2 CH-CH2 -)4 Ti(B) is due to · DEC 2011

ABC26IN1370 · Consider the following reaction mechanism The steps A, B and C, respectively, are · DEC 2012

ABC26IN1371 · Which one of the following will NOT undergo oxidative addition by methyl iodide? · DEC 2012

ABC26IN0235 · In hydrofomylation reaction using [Rh(PPh3)2(CO)(H)] as the catalyst, addition of excess PPh3, would · DEC 2012

ABC26IN1372 · In hydrofomylation reaction using [Rh (PPh3)2(CO)(H)] as the catalyst, addition of excess PPh3, would · DEC 2012

ABC26IN0236 · Reactions A and B are, termed as respectively. (A) SnCl2 + Co2(CO)8 → (B) Me2SnCl2 + + 2NaCl · DEC 2012

ABC26IN1373 · Reactions A and B are, termed as respectively. + 2NaCl · DEC 2012

ABC26IN1375 · The reaction, [(CO)5 Mn(Me)]+CO → [(CO)5 Mn{C(O) Me}] is an example for · JUNE 2013

ABC26IN1390 · The typical electronic configurations of the transition metal centre for oxidative addition · JUNE 2014

ABC26IN1401 · Reductive elimination step in hydrogenation of alkenes by Wilkinson catalyst results in (neglecting solvent in coordination sphere of Rh) · DEC 2014

ABC26IN1403 · The compound that undergoes oxidative addition reaction in presence of H2, is · DEC 2014

ABC26IN0249 · The beta -hydrogen elimination will be facile in · 2015

ABC26IN1412 · The beta -hydrogen elimination will be facile in · JUNE 2015

ABC26IN1434 · The following transformation is an example of · DEC 2015

ABC26IN1444 · Heating a sample of [ (eta 5-C5 H5) Mo(CO)3]2 results in the formation of [ (eta 5-C5 H5) Mo(CO)2] with elimination of 2 equivalents of CO… · DEC 2015

ABC26IN0264 · Addition of NaBH4 to [(eta 5-Cp)Fe(eta 6-C6H6)]+ will give · 2017

ABC26IN1459 · Addition of NaBH4 to [ (eta 5-Cp) Fe (eta 6-C6 H6)]+will give · JUNE 2017

ABC26IN1464 · In the complex [Pd(L-L)(Me)(Ph)], the bisphosphine (L-L) that does not allow reductive elimination of PhMe is · DEC 2017

ABC26IN0283 · The rate-determining step in the catalytic synthesis of acetic acid by Monsanto process is · 2019

ABC26IN1493 · The rate-determining step in the catalytic synthesis of acetic acid by Monsanto process is · DEC 2019