Chemistry - Coordination Chemistry Question with Solution | TestHub
ChemistryCoordination ChemistryIsomerismHard2 minQB
ChemistryHardmultiple choice
The diagram shows an idealised doubly hydroxido-bridged dimer [Rh₂(en)₄(μ-OH)₂]⁴⁺. Acid cleavage replaces each bridge contact by terminal Br while retaining each metal's donor sites, giving cis-[Rh(en)₂Br₂]⁺. A later isomerisation gives its trans form. Ignore ring conformations.
Options:(select one or more)
Answer:
A, B
Solution:
cis-M(AA)₂b₂ gives Δ/Λ, whereas trans is achiral. Breaking one chelate into two identical ammines in the trans form gives trans-M(AA)a₂b₂ with a mirror plane, not mandatory chirality. Removing both chelates gives cis-Ma₄b₂, also achiral. Count donor sites after substitution instead of carrying over the parent's optical label.
Stream:JEESubject:ChemistryTopic:Coordination ChemistrySubtopic:Isomerism
⏱ 2mℹ️ Source: QB
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