ChemPhile
Harmless
Posts: 9
Registered: 1-11-2004
Member Is Offline
Mood: No Mood
|
|
What's the hybrid orbitals of d4 configuration, at high spin state?
For example, [Cr(HzO)6]2+ ion
|
|
|
mick
Hazard to Others
Posts: 338
Registered: 3-10-2003
Member Is Offline
Mood: No Mood
|
|
The S orbitol is circular. The P ( where the electron might be) orbitol is not. The D/E/F orbitol can be doughnut shapped.
mick
|
|
|
Mephisto
Chemicus Diabolicus
Posts: 294
Registered: 24-8-2002
Location: Germany
Member Is Offline
Mood: swinging
|
|
[Cr(H2O)6]2+ at high-spin state
You've got 4 electrons in 5 3d orbitals in normal Cr2+. In high-spin configuration 3 of them (occupied by single electrons) are t2g (low) and 2
orbitals are on the higher eg-niveau (one of them has no electron, the other has one single electron).
|
|
|
JohnWW
International Hazard
Posts: 2849
Registered: 27-7-2004
Location: New Zealand
Member Is Offline
Mood: No Mood
|
|
My understanding is that low spin states in transition metal cations, where the number of d electrons present is substantially less than 10, occur
only where there are particularly strong ligands, which can cause spin-pairing in preference to distribution of unpaired electrons among the d
orbitals. This enables electron pairs from the strong ligands to occupy more d orbitals. In the case of water-solvated [Cr(H2O)6]++, and other
aqua-cations, it would almost certainly be high-spin. Complexes with the likes of amines, phosphines, and organic sulfides are much more likely to be
low-spin.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
