Limitation
It is important to remember that the d electron count is a formalism and describes some complexes better than others. Often it is difficult or impossible to assign electrons and charge to the metal center or a ligand. For a high oxidation state metal center with a 4+ charge or greater it is understood that the true charge separation is much smaller. But referring to the formal oxidation state and d electron count can still be useful when trying to understand the chemistry.
Read more about this topic: D Electron Count
Famous quotes containing the word limitation:
“When we get to wishing a great deal for ourselves, whatever we get soon turns into mere limitation and exclusion.”
—George Eliot [Mary Ann (or Marian)
“Liberty has never come from the government. Liberty has always come from the subjects of the government. The history of government is a history of resistance. The history of liberty is the history of the limitation of government, not the increase of it.”
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—Laurence Sterne (1713–1768)