NCN-black-phosphorus-xtal-3D-balls-orange

Ball-and-stick model of part of the crystal structure of rhombohedral black phosphorus.
Concept from Oxford Chemistry Primer #51:
N. C. Norman (1997) Periodicity and the s- and p-Block Elements, Oxford University Press, p. 43 ISBN: 0-19-855961-5.
Model constructed in CrystalMaker 8.1.
Image generated in Accelrys DS Visualizer.

See http://www.benjamin-mills.com/chemistry/structures/NCN/ for interactive Jmol versions.