2,2′-{1,1′-[Pentane-1,5-diylbis(oxynitrilo)]diethylidyne}di-1-naphthol

The title compound, C29H30N2O4, adopts a distorted Z configuration with respect to the oxime group, which is almost coplanar with the adjacent naphthalene ring [dihedral angle = 4.11 (2)°]. There is one half-molecule in the asymmetric unit, with a crystallographic twofold rotation axis passing through the central C atom of the –CH=N—O-(CH)5—O—N=CH– bridge. Within the molecule, the dihedral angle formed by the two naphthalene rings is 79.08 (3)°, and there are two intramolecular O—H⋯N hydrogen bonds.

[1]  D. Atwood,et al.  Group 13 compounds incorporating Salen ligands. , 2001, Chemical reviews.

[2]  G. Sheldrick.  A short history of SHELX. , 2008, Acta crystallographica. Section A, Foundations of crystallography.

[3]  Wen-Kui Dong,et al.  6,6′-Dihydroxy-2,2′-[(pentane-1,5-diyldioxy)bis(nitrilomethylidyne)]diphenol , 2008, Acta crystallographica. Section E, Structure reports online.

[4]  Yin-Xia Sun,et al.  Synthesis, crystal structure, and properties of supramolecular CuII, ZnII, and CdII complexes with Salen-type bisoxime ligands , 2009 .

[5]  P. A. Vigato,et al.  Transition metal complexes with binucleating ligands , 1977 .

[6]  Li Xu,et al.  6,6′-Dihydroxy-2,2′-[(butane-1,4-diyldioxy)bis(nitrilomethylidyne)]diphenol , 2008, Acta crystallographica. Section E, Structure reports online.

[7]  Chin Sing Yeap,et al.  4,4′,5,5′-Tetramethyl-2,2′-[1,1′-(propane-1,3-diyldinitrilo)diethylidyne]diphenol , 2008, Acta crystallographica. Section E, Structure reports online.

[8]  Wen-Kui Dong,et al.  2,2′-{1,1′-[Pentane-1,5-diylbis(oxynitrilo)]diethylidyne}diphenol , 2008, Acta crystallographica. Section E, Structure reports online.