Composition of concentrates of heterocyclic petroleum compounds isolated by complex-formation with titanium tetrachloride*

Summary o 1. The group composition of nitrous bases and aromatic sulphur compounds isolated by complex-formation with titanium tetrachloride from Soviet and West Siberian (Fedorov) crude oils was studied. 2. Homologous series of nitrous bases are characterized by practically identical compounds ranging from C n H 2 n −5 N to C n H 2 n −21 N. Pyridine and quinoline derivatives with alkyl substituents and naphthene rings predominate. 3. Thiacycloparaffins with a number of cnaphthene rings in the molecule of 1 to 5 predominate among saturated sulphur compounds. Unsaturated sulphur compounds are represented mainly by homologues of thiophene, benzo- and dibenzothiophene.