A photochromic dinuclear compound: aquatetrakis(mu-2,3-diphenylprop-2-enoato)bis(2,3-diphenylprop-2-enoato) ethanolbis(1,10-phenanthroline)dilanthanum(III)

作者：Yang, Yunyun; Chai, Wenxiang^*; Song, Li; Lin, Jian

来源：Acta Crystallographica Section C-Structural Chemistry, 2011, 67: M293-M296.

DOI：10.1107/S0108270111030095

• CONTAINING 1,10-PHENANTHROLINE LIGAND
• CRYSTAL-STRUCTURE
• HYDROTHERMAL SYNTHESIS
• RHENIUM(I) COMPLEX
• LUMINESCENCE
• DIARYLETHENES
• DIHYDRATE
• IONS

The title dinuclear complex, (aqua-1 kappa O)tetrakis(mu -2,3-diphenylprop-2-enoato-1:2 kappa O-2:O')bis(2,3-diphenylprop-2-enoato)-1 kappa O;2 kappa O-(ethanol-2 kappa O)bis(1,10-phenanthroline)-1 kappa N-2,N';2 kappa N-2,N'-dilanthanum(III), [La-2(C15H11O2)(6)(C12H8N2)(2)(C2H5OH)(H2O)], contains two similar La-III centres with distorted [LaO6N2] bicapped triganol-prismatic coordination polyhedra formed by six phenylcinnamate (PCA(-) or 2,3-diphenylprop-2-enoate) ligands, two 1,10-phenanthroline (phen) ligands, a coordinating ethanol molecule and a coordinating water molecule. The two metal centres are bridged by four mu-PCA(-) ligands, with the remaining two PCA(-) ligands coordinated in a monodentate fashion. The noncoordinated carboxylate O atoms on the terminal PCA(-) ligands form O-H center dot center dot center dot O hydrogen bonds with the coordinated solvent molecules. Each La centre is also coordinated by a bidentate phen ligand. The PCA(-) ligands all adopt syn-syn orientations, with the two phenyl rings presenting dihedral angles of about 70 degrees. The compound displays photochromic behaviour both in solution and in the solid state.

• 出版日期2011-9
• 单位中国计量大学; 浙江理工大学