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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: aldoxime_amine on January 23, 2009, 10:27:00 AM

Title: Crystal field stabilisation energy calculation.
Post by: aldoxime_amine on January 23, 2009, 10:27:00 AM

Hello,

I'm a student from India and I was reading up on the crystal field theory, from Concise Inorganic Chemistry (by J.D.Lee). (low price edition) I am new so sorry if i posted in the wrong place.
My doubt is this:
On page 206-207, the author takes about calculation of  :delta:_o for [Ti(H2O)6]³⁺ from the Uv spectra curve. It says:
The curve plots Molar absorbance against decreasing wavenumber in cm^-1.
The part of the curve from 27000 to 30000 cm^-1 is steep due to charge transfer. (my doubt: What does this mean?). The broad peak of the curve at 27300 cm^-1 represents the d-d transition from the t_2g orbital to the e_g orbital. (My doubt: why should there be this peak?)

I have enclosed a rough diagram i drew using MS Paint.

Please explain as clearly as possible.
Thank You.

Title: Re: Crystal field stabilisation energy calculation.
Post by: aldoxime_amine on January 26, 2009, 09:13:37 AM

Anyone want to bother replying?

Title: Re: Crystal field stabilisation energy calculation.
Post by: nielsgeode on February 07, 2009, 06:53:39 AM

Quote from: aldoxime_amine on January 26, 2009, 09:13:37 AM

Anyone want to bother replying?

On wikipedia there is a nice article on charge transfer: http://en.wikipedia.org/wiki/Charge_transfer_complex
What do you mean with why should there be this peak? Can you be more specific?