[NTUstudent]

hi guys,
i have question about complexes again.

Need to explain the following:
The colour of trans-[Co(en)₂F₂]⁺ is less intense than those of cis-[Co(en)₂F₂]⁺ and trans-[Co(en)₂Cl₂]⁺

[AWK]

http://books.google.pl/books?id=2qAa5hp6KX4C&pg=PA278&lpg=PA278&dq=trans-%5BCo(en)2F2%5D%2B&source=bl&ots=ZaoRVJWHon&sig=5QGBtaiLMU8Ab-InUHv1W3oeihY&hl=pl&ei=UWUTTeP7DcbpOde16bwJ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBoQ6AEwAA

[singonga]

http://books.google.pl/books?id=2qAa5hp6KX4C&pg=PA278&lpg=PA278&dq=trans-%5BCo(en)2F2%5D%2B&source=bl&ots=ZaoRVJWHon&sig=5QGBtaiLMU8Ab-InUHv1W3oeihY&hl=pl&ei=UWUTTeP7DcbpOde16bwJ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBoQ6AEwAA

>:(how do i read the response?

[dipesh747]

He's just telling you to go buy a textbook and read. I wouldn't say that one as it is a post-grad book and you are quite clearly not a post grad.

Here is a start http://www.wou.edu/las/physci/ch462/tmcolors.htm

[cheese (MSW)]

I think we might be more specific:
F. A. Cotton, G. Wilkinson, C. A. Murillo, M. Bochmann,
Advanced Inorganic Chemistry 6th ed (1999). p 824-825
(C&W is not called "The Bible" by inorganic chemists without reason )
And also for example:C. E. Housecroft, A. G. Sharpe, Inorganic Chemistry 3rd ed p  663.
For you last part consider where F^- and Cl^- are in the spectrochemical series
viz a viz en