[pizza1512]

Hi!

I've been set to find out the colours of different metal complexes but there seems to be a few which I can't find: Cu(en)₃ but search engines refer me to Co(en)₃.

Anyone know the complex colour of:

• [Cu(en)₃²⁺]
• [Cu(C₂O₄)₃^4-]
• [Fe(OH)₂(H₂O)₄]
• [V(H₂O)Cl₂]⁺
  

Thanks
 

[Arkcon]

Can you find some image results by typing in the name?  Like copper chromate ion, or vanadium hydrated chloride, or some hybrid of words like that, that lead you to a picture with the correct formula?  I don't even know, for example, what (en) is the abbreviation for.

[ARGOS++]

Dear Arkcon;

For some common Ligands:   http://en.wikipedia.org/wiki/Ligand#Common_ligands

Dear piza1512;

May they be of some help to you?:
    -   http://en.wikipedia.org/wiki/Moolooite
    -   http://en.wikipedia.org/wiki/Iron(II)_hydroxide
    -   http://en.wikipedia.org/wiki/Vanadium(III)_chloride
(They may not all fit exactly.)


Good Luck!
                    ARGOS⁺⁺

[pizza1512]

Dear Arkcon;

For some common Ligands:   http://en.wikipedia.org/wiki/Ligand#Common_ligands

Dear piza1512;

May they be of some help to you?:
    -   http://en.wikipedia.org/wiki/Moolooite
    -   http://en.wikipedia.org/wiki/Iron(II)_hydroxide
    -   http://en.wikipedia.org/wiki/Vanadium(III)_chloride
(They may not all fit exactly.)


Good Luck!
                    ARGOS⁺⁺

I've tried to look at those pages but they don't give me any information on complex colours!
 

[Arkcon]

By typing the complete names in Google Image search, I managed to find this page of hydroponic chemicals, which list the colors by name:

http://www.avachemicals.net/micronutrients.html

People often ask for an online page with all the colors on it, and I'm of the opinion that you just won't have much success finding one.  Here's where I explained it, a while back.

http://www.chemicalforums.com/index.php?topic=29298.msg111202#msg111202

[AWK]

Cu(en)₃]SO₄ is deep blue
http://www.springerlink.com/content/q33637275170v4p1/
Google: copper tris ethylenediamine complex