MadSci Network: Chemistry |
There are answers on a number of levels. The Lewis level is easiest:
ClF4- is isoelectronic with XeF4; if you search our archives for "XeF4" you should find an answer I wrote on that compound a couple of years ago, which gives references. Of course, one could consider ClF4- from a hybridization (sp3d2) or molecular-orbital standpoint, but that's another bucket of worms (search for my answer on IF7!) and the Lewis model is so much easier. If you must assign the lone pairs to orbitals, remember that they must be (hybridized or unhybridized) atomic orbitals on Cl; since they must be orthogonal, the pz and dz2 orbitals will do.
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