[cyansky]

I have a question on VO²⁺ complex. I know that vanadium in VO²⁺ has +4 oxidation state and it has an unpaired electron in the d-orbital. Based on the notes, they have mentioned that for d⁴ onwards to d⁷ has 2 possibilities of arrangement of electrons i.e. high spin and low spin. However, for vanadium in VO²⁺ only has 1 arrangement since it is d¹. It is coordinated with 2 acetylacetone ligands (based on my understanding, it is a weak field ligand), then for the arrangement of electron, does the complex have a high or low spin?

[mjc123]

You've already stated the answer. For a d¹ configuration, there is only one possibility.

[Traumatic Acid]

Also, what does the colour of this complex tell you?