Ueber Hydrazone der Dithiokohlensäureester

Ueber Das Verschwinden Der Θ-functionen

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...

Ueber Die Fortpflanzung Ebener Luftwellen Von Endlicher Schwingungsweite

[Aus dem achten Bande der Abhandlungen der Königlichen Gesellschaft der Wissenschaften zu Göttingen. 1860.]

Ueber Die Fläche Vom Kleinsten Inhalt Bei Gegebener Begrenzung

2,4-Dinitro­benzaldehyde hydrazone

The title compound, C(7)H(6)N(4)O(4), plays an important role in the synthesis of biologically active compounds. The planar hydrazone group is oriented at a dihedral angle of 8.27 (3)° with respect to the benzene ring. In the crystal structure, inter-molecular N-H⋯O and N-H⋯N hydrogen bonds link the mol-ecules.