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By the weak acid interaction of polymeric phosphanes the condensation of ethylendi-amine yields in a small amount bicyclo-[4,4,0]-1,4,6,9-tetraazadecane C 6 H 14 N 4 . The compound crystallizes triclinic in the space group P1̅ with a = 841.6 pm, b - 463.6 pm, c = 529.2 pm, a= 109.05°, β= 108.35°, γ = 84.13° and Z= 1 formula unit per unit cell. The two condensed six-membered rings have chair conformations. The mean N-C bond lengths are 146.0 pm, the bridging C-C bond is 150.3 pm, whereas the other C-C bonds are 155.1 pm. Structure and condensation reaction are discussed.

zeitschrift für naturforschung b

Darstellung und Struktur des Bicyclo-[4.4.0]-1.4.6.9-tetraazadecans C 6 H 14 N 4   Preparation and Structure of Bicyclo-[4,4,0]-l,4,6,9-tetraazadecane C 6 H 14 N 4