Worksheets2302627 (2023)
Total questions: 15
Worksheet time: 15mins
Which of the following species is most stable?
[Cp2Fe]+
[Cp2Co]
[Cp2Co]+
[Cp2Ni]3+
What is likely to be M in the complex [CpM(CO)2(linear-NO)]Cl3 ?
Fe
Co
Ni
Cu
An 18 e- d6-ML6 complex prefers to undergo dissociative substitution over associative substitution. Which geometry is UNLIKELY for its ML5 intermediate?
Square pyramidal
Trigonal bipyramidal
Distorted trigonal bipyramidal
Which species has the highest trans effect (sigma donor + pi acceptor)?
ethylene
trimethylphosphine
bromide
pyridine
What is the reversed reaction of 1,2-migratory insertion?
Dissociative substitution
Elimination
Oxidative addition
Metathesis
Alpha-hydride elimination of a metal complex leads to the formation of ________.
Metal-alkene complex
Metal-carbon complex
Metal-carbonyl complex
Metal-carbene complex
Which of the following is NOT present in the Zeist's salt?
Alkene ligand
Platinum ion
Negative charge of the complex
Bromide ligand
Which of the following ligands can form a metallacyclopropene with a metal center?
Alkene
Alkyne
Allyl
Alkane
What is the most common cause for the instability of metal-alkyl complexes?
Alpha-hydride elimination
Beta-hydride elimination
Gamma-hydride elimination
Reductive elimination
What is NOT true about Fischer carbene complexes?
It is counted as 2 e-, neutral.
The metal center should have low oxidation state.
There must be at least pi-donor substituents on the carbene carbon.
Other ligands should be pi-donor ligands.
What is most likely to be the size of cluster compounds?
1 Angstrom
10 Angstrom
1,000 Angstrom
1 micron
Which of the following fragments is NOT isolobal to the others?
NH
O
Ni(PMe3)3
CpCoCl
Who was NOT awarded the Nobel prize in 2005?
Chauvin
Fischer
Grubbs
Schrock
Which of the following metathesis reactions leads to the formation of closed-ring product?
RCM
ROM
CM
ADMET
What are the initials (names) of the two instructors for this course?
WA, JU
WU, JA
WN, JO
WO, JN
