Chemical Forums
Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: luketapis on December 06, 2012, 05:17:37 AM
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Hi I have a question:
The two complexes [NI(OH2)2]2+ and [Ni(NH3)]2+
are both colored. One is green, the other is blue. Which is which?
Ok, so both complexes are octahedral and d8.
[NI(OH2)2]2+ is high spin and weak field.
[Ni(NH3)]2+ is strong field ligand = low spin.
How from this information distinguish colors?
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Hi I have a question:
The two complexes [NI(OH2)2]2+ and [Ni(NH3)]2+
are both colored. One is green, the other is blue. Which is which?
Ok, so both complexes are octahedral and d8.
[NI(OH2)2]2+ is high spin and weak field.
[Ni(NH3)]2+ is strong field ligand = low spin.
How from this information distinguish colors?
What is the cause of the colour?
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absorption of light with a particular wavelength
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absorption of light with a particular wavelength
And on a physical level, what is happening?
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d-d transition
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Sorry, missed the reply. That sounds good (possibly d :rarrow: d*, if I remember right, but it's been a while). So, if the energy gap between these levels is small, what does that mean for the light absorbed in the transition?
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I don't know
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Do you know any relationship between frequency of light and energy?