Topic
Aromatic hydrocarbon
About: Aromatic hydrocarbon is a research topic. Over the lifetime, 5814 publications have been published within this topic receiving 55499 citations. The topic is also known as: arene & arenes.
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Patent•
29 Jun 1977
TL;DR: In this article, a composition of matter comprising di-n-butylmagnesium and diethylmag magnesium with a nbutyl:ethyl alkyl group ratio of about 0.25:1 to about 4:1 which is soluble in aliphatic, cyclo-aliphatic and aromatic hydrocarbon solvents is disclosed.
Abstract: A composition of matter comprising di-n-butylmagnesium and diethylmagnesium with a n-butyl:ethyl alkyl group ratio of about 0.25:1 to about 4:1 which is soluble in aliphatic, cycloaliphatic, and aromatic hydrocarbon solvents is disclosed. The composition is prepared in the substantial absence of oxygen and moisture by the simultaneous or consecutive reactions of ethyl and n-butyl halides with metallic magnesium in the presence of the hydrocarbon solvent, followed by separation of the insoluble magnesium chloride and any unreacted magnesium metal from the resulting solution.
24 citations
TL;DR: In this article, the triplet state zero field splitting parameters were determined from the delta m = plus or minus 1 EPR spectra of the photoexcited triplet states of several structurally related aromatic hydrocarbons and aromatic heterocyclic molecules, using diethyl ether glasses at 77 K.
Abstract: : The triplet state zero field splitting parameters D and E have been determined from the delta m = plus or minus 1 EPR spectra of the photo-excited triplet states of several structurally related aromatic hydrocarbons and aromatic heterocyclic molecules, using diethyl ether glasses at 77 K. The values of the splitting parameters per cm for the various molecules are as follows: biphenyl D = 0.1092, E = 0.0036; fluorene D = 0.1075, E = 0.0033; carbazole D = 0.1022, E = 0.0066; dibenzofuran D = 0.1071, E = 0.0092; dibenzothiophen D = 0.1130, E = 0.0021. The uncertainties in these numbers are plus or minus 0.2 Mk for D and plus or minus 0.1 Mk for E. Lifetimes of the triplet states were also determined. A discussion of the results in terms of conjugation of the hetero atom with the aromatic rings is given. The results are compared to the published values of D and E for phenanthrene. It is found that biphenyl is a better hydrocarbon model than phenanthrene for the heterocyclics investigated in this report. (Author)
24 citations
Patent•
22 Jan 1993
TL;DR: In this article, a method for partially hydrogenating a monocyclic aromatic hydrocarbon to produce a cycloolefin, comprising reacting a moncyclic aromatic polycarbon with hydrogen in the presence of a particulate hydrogenation catalyst comprised mainly of metallic ruthenium, was presented.
Abstract: Disclosed is a method for partially hydrogenating a monocyclic aromatic hydrocarbon to produce a cycloolefin, comprising reacting a monocyclic aromatic hydrocarbon with hydrogen in the presence of a particulate hydrogenation catalyst comprised mainly of metallic ruthenium, in a reaction system comprising a continuous aqueous phase having the particulate hydrogenation catalyst suspended therein, an oil phase containing the monocyclic aromatic hydrocarbon, and a gaseous phase comprising hydrogen gas, while applying a shearing force to the reaction system at a specific maximum shear rate. By the method of the present invention, not only can a cycloolefin be produced at high selectivity and in high yield, but also the catalytic activity can be stably maintained at a high level for a prolonged period of time.
24 citations
Patent•
23 Oct 1965
TL;DR: In this article, an electroluminescent device including a container having disposed therein a pair of electrodes and a solution of a polynuclear condensed aromatic hydrocarbon in an aprotic solvent, the said aromatic hydrocarbons being selected from the group consisting of naphthacene, perylene and 5, 6, 11, 12-tetraphenylnaphthacetene, the electrodes and container being chemically inert with respect to said solution.
Abstract: 1. An electroluminescent device including a container having disposed therein a pair of electrodes and a solution of a polynuclear condensed aromatic hydrocarbon in an aprotic solvent, the said aromatic hydrocarbon being selected from the group consisting of naphthacene, perylene and 5, 6, 11, 12-tetraphenylnaphthacene, the said electrodes and container being chemically inert with respect to said solution.
24 citations
24 citations