Ueber Dinitro-β-naphtol

Hippokrates Ueber die Krankheiten III

irrelevant. Chemistry and the relations between science, technology, and industry are well surveyed by Crosland and Cardwell respectively. Forbes's essay on mathematical cosmography is not a comprehensive account but the story (albeit interesting) of a few German cartographers. Compared with other recent collections of essays in the history of science, this volume parades no party line: witness...

2,4-Dinitro-1-phenoxy­benzene

The title compound, C(12)H(8)N(2)O(5), was obtained by the reaction of 1-chloro-2,4-dinitro-benzene and phenol in the presence of potassium carbonate. The nitro-substituted benzene ring lies on a mirror plane, with one NO(2) group in the same plane and the other disordered across this plane. The phenoxy-benzene unit is placed perpendicular to this mirror, resulting in an exact orthogonal relati...

Design and Synthesis of N-(2-{[(2-Hydroxy-naphtalen-1-yl)- phenyl-methyl]-amino}-ethyl)-3,4-dinitro-benzamide

In this study, a new naphtol derivative was synthesized. The first stage, involved preparation of 1-[(2-Amino-ethylamino)-phenylmethyl]-naphthalen-2-ol (4) using a three-component system (β-naphtol [1], benzaldehyde [2], and ethylenediamine [3]), followed by the reaction of 4 with 3,5dinitrobenzoic acid (5) to form N-(2-{[(2-Hydroxy-naphtalen-1-yl)-phenyl-methyl]-amino}-ethyl)3,5-dinitro-benzam...

Ueber Das Verschwinden Der Θ-functionen

3,3′-Dinitro-4,4′-bipyridine

In the title compound, C(10)H(6)N(4)O(4), the pyridine rings are oriented at a dihedral angle of 67.8 (1)°. The O-atom pairs are trans, each displaced by a similar distance [average = 0.2331 (2) Å] out of the attached pyridine ring plane. In the crystal, inter-molecular C-H⋯O and C-H⋯N inter-actions link the mol-ecules into a three-dimensional network.