UV-visible spectrum of a transition metal complex (d3 - d8) from internet . Assign the peaks and ...

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Inorganic Chemistry Fourth Edition Peter Atkins, Tina Overton, Jonathan Rourke, Mark Weller, and Fraser Armstrong 848 pages | 1500 colour line drawings | 276x219mm 978-0-19-926463-6 | Paperback | 26 January 2006 Price: £39.99 1. Exercises on page 489 •19.15 to 19.23 2. Find a UV-visible spectrum of a transition metal complex (d 3 - d 8 ) from internet . Assign the peaks and using the appropriate Tanabe –Sugano diagram calculate for the complex. ASSIGNMENT.

Transcript of UV-visible spectrum of a transition metal complex (d3 - d8) from internet . Assign the peaks and ...

Page 1: UV-visible spectrum of a transition metal complex (d3 -  d8) from internet . Assign the peaks and  using  the appropriate Tanabe –Sugano diagram calculate Do  for the complex.

Inorganic ChemistryFourth EditionPeter Atkins, Tina Overton, Jonathan Rourke, Mark Weller, and Fraser Armstrong848 pages | 1500 colour line drawings | 276x219mm978-0-19-926463-6 | Paperback | 26 January 2006Price:  £39.99

1. Exercises on page 489

•19.15 to 19.23

2. Find a UV-visible spectrum of a transition metal complex (d3 - d8) from internet . Assign the peaks and using the appropriate Tanabe –Sugano diagram calculate for the complex.

ASSIGNMENT.

Page 2: UV-visible spectrum of a transition metal complex (d3 -  d8) from internet . Assign the peaks and  using  the appropriate Tanabe –Sugano diagram calculate Do  for the complex.

Assigning transitions(blue arrow reproduces observed transitions)

Cr(NH3)63+

Two allowed, one forbidden transition

21550cm-1

28500cm-1

Page 3: UV-visible spectrum of a transition metal complex (d3 -  d8) from internet . Assign the peaks and  using  the appropriate Tanabe –Sugano diagram calculate Do  for the complex.

Analysis of Tanabe Sugano -Using Ruler to find ratio

Get the Ratio of v2/v1=28500/215500=1.32

Now,using a ruler.Find a y value by moving the ruler along the x axis and find the ratio approximately at 1.32

4T2g

4T1g

Approximately 1.30 at 33.0

Page 4: UV-visible spectrum of a transition metal complex (d3 -  d8) from internet . Assign the peaks and  using  the appropriate Tanabe –Sugano diagram calculate Do  for the complex.

4T2g 4A2g

4T1g 4A2g

Page 5: UV-visible spectrum of a transition metal complex (d3 -  d8) from internet . Assign the peaks and  using  the appropriate Tanabe –Sugano diagram calculate Do  for the complex.

From the Tanabe –Sugano diagram

It’s mean that

32.8B=21550cm-1

So B=657cm-1

cm-1