Synthesis and Crystal Structure of 3,3'-Dimethyloxy-1,1'- [butane-1,4-diyldioxybis(nitrilomethylidyne)]dibenzene

Abstract

As we know, Salen-type compounds are important multidentate ligands in modern coordination chemistry 1 , the development of their bisoxime analogues and complexes can provide new topologies for functional materials, in which coordination forms and functionality are important variables 2. And can be used to obtain non-linear optical materials 3 , biological systems 4 , interesting magnetic properties 5 and building blocks for cyclic supramolecular structures 6. Thus, new materials can be produced by using these compounds, which seem to be suitable candidates for further chemical modifications 7. Herein, we report on the synthesis and crystal structure of 3,3'-dimethyloxy-1,1'-[butane-1,4-diyldioxybis(nitrilomethylidyne)]dibenzene. 3-Methoxybenzaldehyde was purchased from Alfa Aesar and used without further purification. 1,4-Bis(aminooxy)butane was synthesized according to an analogous method reported earlier 8. The other reagents and solvents were analytical grade reagents from Tianjin Chemical Reagent Factory. C, H and N analyses were carried out with a GmbH VariuoEL V3.00 automatic elemental analyzer. X-Ray single crystal structure was determined on a Bruker Smart 1000 CCD area detector. Melting points were measured by the use of a microscopic melting point apparatus made in Beijing Taike Instrument Limited Company and the thermometer was uncorrected. General procedure: 3,3'-Dimethyloxy-1,1'-[butane-1,4diyldioxybis(nitrilomethylidyne)]dibenzene was synthesized according to an analogous method reported earlier 9. To an