File talk:Boron-nitride-(sphalerite)-3D-balls.png
Its hard to see from this image but each of the six 6-membered rings involving a specific atom are in the chair configuration. - contrast with Wurtzite_crystal_structure : -3D-balls.png)
which has some (the 'vertical' ones) in boat configuration - Rod57 (talk) 10:38, 13 August 2017 (UTC)
-3D-balls.png&oldid=795303096){kind=link}