, 838 (1984).Details of the synthcsis, physical propertics, and molecular structurcs of 4,4-dimethyl-2,5,5-triphenyl-1,3-dioxa-4-azonia-2-bora-5-boratacyclopentane, 4, and 4,4,5,5-tctramcthyl-2,2-diphcnyl-I ,3-dioxa-4-azonia-2-boratacyclopentane, 5, [Traduit par le journal]