Anhydrous
This is the awkward part. While the molecular formula works out as FeCl3 (as of course your expecting), what you have is a combination of irons bound to 6 chlorides, and chlorides bound to 2 irons. So to start with you might draw one iron in the middle of your page with 6 chlorines around it. But then you would have to add 3 more iron atoms, one for each adjacent pair of chlorines. These are then surrounded with more chlorines, and more irons, so on and so forth until overall you have FeCl3, but made up of [FeCl6] and [ClFe2] units. Think of it like a jigsaw puzzle.
Hence the iron with 3 chlorines coming of it is not an accurate representation of the structure.
As to the bonding, it is an awkward mixture of covalent and ionic. To explain it properly requires a bit more detail than the typical a-level syllabus. Essentially you have these small, hard Fe3+ cations, surrounded by fairly large, soft Cl- anions. Hence there is an ionic attraction between the two. But there is also a degree of covalency, with those easily polarizable Cl- ions donating a lone pair towards the metal center, forming a complex. The bonding is not true covalent as the electron pair is much more towards the chlorine than it is the iron, but it is not true ionic either, as it is partly shared between chlorine and iron.
Since a picture is worth a thousand words:
True Covalent:
Fe-----:-----Cl
True Ionic:
Fe----------:Cl
Actual bonding:
Fe-------:---Cl
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