Notes - An N-Dial-kylaminoalkylpyrimidine

Structure of 2,2-dibromo-3,4-dihydro-1(2H)-naphthalenone

“…Although wtetralone was prepared in the last century (Kipping & Hill, 1899), and its melting point (281 K) is not far from room temperature, its structure has not been reported, and consequently, no comparison of its structure with that of its dibromo-substituted analogue is possible. However, the structure of naphthalene, C~0H8 (Abrahams, Robertson & White, 1949;Cruickshank & Robertson, 1953), and of anthraquinone, C~4HsO 2 (Sen, 1948;Prakash, 1967) have long been known and could be used towards this end. The average aromatic C-C bond distance in this structure [ 1.398 (8) A] is basically the same as that in naphthalene and in anthraquinone and in any aromatic ring.…”