Enthalpies of combustion of 1,4-naphthoquinone, 9,10-anthraquinone, 9,10-phenanthraquinone, 1,4,9,10-anthradiquinone, 5,8-dihydroxy-1,4-naphthoquinone, and 1,4-dihydroxy-9,10-anthraquinone

Experimental study on the thermochemistry of 1-(2H)-phthalazinone and phthalhydrazide

“…The same behaviour was already found [29] considering benzene and quinone, naphthalene and 1,4-naphthoquinone, as well as for the series anthracene, 9,10-anthraquinone and 1,4,9,10-antradiquinone.…”

Energetic effects of ether and ketone functional groups in 9,10-dihydroanthracene compound

“…anthrone, it is associated with an enthalpic increment of À(128.3 ± 5.4) kJ Á mol À1 . Moreover, in the anthrone molecule, replacing the methylene group, positioned in the para position to the carbonyl group, by another carbonyl group, [44] (-75.7 ± 2.9) [45] (-107.1 ± 4.3) (-101.0 ± 5.6) SCHEME 1. Enthalpic increments for the substitution of methylene by ketone or ether groups in 9,10-dihydroanthracene (values in kJ Á mol À1 ).…”

“…The D f H m ðgÞ obtained in this work for anthrone and xanthene together with the values of anthracene [12], dibenzo-p-dioxin [44] and anthraquinone [45] were employed to calculate the enthalpic increments, which appear in scheme 1, concerning the substitution of the methylene group (ÀCH 2 À) in 9,10-dihydroanthracene by carbonyl (ÀC(@O)À) or ether groups (ÀOÀ).…”

Thermochemistry of nitronaphthalenes and nitroanthracenes

“…For over a decade, we have been focusing deep attention on the thermochemistry of aromatic compounds, where some polycyclic aromatic hydrocarbons are included, and with results already reported in the literature [1][2][3]. In the present work, the thermochemistry of two crystalline nitro derivatives of naphthalene and anthracene, namely, 1-nitronaphthalene [CAS 86-57-7] and 9-nitroanthracene [CAS 602-60-8] whose formulae are represented in figure 1, has been studied by means of experimental and computational techniques.…”