Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Wed, 11 Jan 2012 15:02:55 +0100 Wed, 11 Jan 2012 15:02:55 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27427 The title compound, C11H8O4, features an almost planar molecule (r.m.s. deviation = 0.033 Å for all non-H atoms). In the crystal, the molecules are linked via C-H...O hydrogen bonds, forming two-dimensional networks lying parallel to (1-21). Aamer Saeed; Aalia Ibrar; Muhammad Arshad; Michael Bolte article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27427 Thu, 01 Nov 2012 15:02:55 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/25280 The structure of the title compound, C14H12N2O2 {systematic name: 2,2′-[hydrazinediylidenebis(methanylyl­idene)]diphen­ol}, has already been determined in the triclinic space group P An external file that holds a picture, illustration, etc. Object name is e-68-0o255-efi1.jpg with Z = 4 [El-Medani, Aboaly, Abdalla & Ramadan (2004 [triangle]). Spectrosc. Lett. 37, 619–632]. However, the correct space group should be P21/c with Z = 4. This structure is a new polymorph of the already known monoclinic polymorph of salicyladehyde azine, which crystallizes in space group P21/n with Z = 2. The benzene rings form a dihedral angle of 46.12 (9)°. Two intramolucular O—H[cdots, three dots, centered]N hydrogen bonds occur. Aamer Saeed; Michael Bolte; Muhammad Arshad article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/25280 Mon, 25 Jun 2012 13:29:39 +0200