Diamond Fayos J Journal of Solid State Chemistry 148 (1999) 278-285 Possible 3D carbon structures as progressive intermediates in graphite to diamond phase transition Note: mathematical model, phase: diamond(cub) _database_code_amcsd 0013991 3.567 3.567 3.567 90 90 90 Fd-3m atom x y z C 0 0 0