A Tricyclic Phosphorus(V)–Hydrazine System with Twist Conformation of the Central Heterocycle
摘要:
The compound 9-oxo-2-phenoxy-1,3,8,10-tetraaza-2 lambda(5)-phosphatricyclo[8.4.0.0(3,8)]tetradecane 2-sulfide, C15H21N4O2PS, was synthesized from bis(hexahydropyridazido)thiophosphoric acid O-phenyl ester and bis(trichloromethyl)carbonate trisphosgene in the presence of triethylamine. The molecular structure of the tricyclic system consists of a central six-membered ring with a twist conformation, the two anellated hexahydropyridazine rings revealing 'normal' chair conformations. Bond distances are N-N 1.429(3) and 1.420(3), P-N 1.647(2) and 1.663(2), and PS 1.913(1) Angstrom.