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1,2,4,5-Tetra- tert -butyl-1,2,4,5-tetraphospha[2.2]pentane crystallizes in the orthorhombic space group  Pbcn  with  a  = 1252.7 pm,  b  = 1518.6 pm,  c  = 1167.2 pm and  Z  = 4 formula units. The crystal structure has been determined by ‘direct methods’ and refined to  R  F  = 0.040 for 958 observed reflections.

zeitschrift für kristallographie

Beiträge zur Strukturchemie phosphorhaltiger Ketten und Ringe: XIV. Die Molekül- und Kristallstruktur des 1,2,4,5-Tetra- tert -butyl-1,2,4,5-tetraphospha[2.2]pentans, ( t BuP) 2 C( t BuP) 2  1