THE FORMATION OF CYCLIC COMPOUNDS FROM DERIVATIVES OF DIPHENYL. PART II. THE FORMATION OF 4,5,9,10-DIBENZOPYRENE AND 4,5-DIPHENYL-DIPHENYLENE OXIDE FROM 6,6′-DIPHENYL-DIPHENYL-2,2′-TERAZONIUM SULPHATE
THE FORMATION OF CYCLIC COMPOUNDS FROM DERIVATIVES OF DIPHENYL. PART II. THE FORMATION OF 4,5,9,10-DIBENZOPYRENE AND 4,5-DIPHENYL-DIPHENYLENE OXIDE FROM 6,6′-DIPHENYL-DIPHENYL-2,2′-TERAZONIUM SULPHATE