Query on IUPAC nomenclature of coordination complexes

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SUMMARY

The discussion centers on the IUPAC nomenclature of coordination complexes, specifically referencing the Red Book 2005. Participants seek clarification on the κ-system for donor atoms, particularly in relation to closed ring structures in compounds labeled 2 and 3. The conversation emphasizes the importance of understanding the starting point for naming these complexes, which is crucial for accurate chemical communication.

PREREQUISITES
  • IUPAC nomenclature rules for coordination complexes
  • Understanding of the κ-system for donor atoms
  • Familiarity with closed ring structures in coordination chemistry
  • Knowledge of the Red Book 2005 guidelines
NEXT STEPS
  • Study the IUPAC Red Book 2005 for detailed nomenclature rules
  • Research the κ-system and its application in coordination chemistry
  • Examine examples of closed ring coordination complexes
  • Learn about the significance of donor atom positioning in naming conventions
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Chemists, students of chemistry, and educators focusing on coordination chemistry and IUPAC nomenclature standards.

Wrichik Basu
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I could finally get a copy of the Red Book 2005 from a library. In the chapter dedicated to nomenclature of coordinate complexes, while explaining the κ-system of specifying donor atoms, the following two examples were given (among many others):

Screenshot_20180714-024915.png


Can anyone explain how the naming is done for the two compounds (labelled 2 and 3 in the picture)? The problem that I am facing is with the closed rings. From where is the naming started?
 

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