Luminesscent properties of three structures built from 3-cyano-4-di-cyanomethylene-5-oxo-4,5-dihydro-1H-pyrrol-2-olate and cadmium

作者：Tafeenko Viktor A^*; Panin Gennady N; Baranov Andrey N; Bardasov Ivan N; Aslanov Leonid A

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2007, 63: M541-M547.

DOI：10.1107/s0108270107045453

Yellow-orange tetraaquabis(3-cyano-4-dicyanomethylene-5oxo-4,5-dihydro-1H-pyrrol-2-olato-kappa N-3)cadmium(II) dihydrate, [Cd(C8HN4O2)(2)(H2O)(4)]center dot 2H(2)O, (I), and yellow tetraaquabis(3-cyano-4-dicyanomethylene-5-oxo-4,5-dihydro-1H-pyrrol-2-olato kappa N-3)cadmium(II) 1,4-dioxane solvate, [Cd(C8HN4O2)(2)(H2O) (4)]center dot C4H8O2, (II), contain centrosymmetric mononuclear Cd2+ coordination complex molecules in different conformations. Dark-red poly[[decaaquabis(mu 2-3-cyano-4-dicyanomethylene5- oxo-4,5-dihydro-1H-pyrrol-2-olato-kappa N-2:N')bis(mu(2)-(3)-cyano-4-dicyanomethylene-1H-pyrrole-2,5-diolato-kappa N-2:N')tricadmium] hemihydrate], [Cd-3(C8HN4O2)(2)(C8N4O2)(2)(H2O) 10]center dot 0.5H(2)O, (III), has a polymeric two-dimensional structure, the building block of which includes two cadmium cations (one of them located on an inversion centre), and both singly and doubly charged anions. The cathodoluminescence spectra of the crystals are different and cover the wavelength range from UV to red, with emission peaks at 377 and 620 nm for (III), and at 583 and 580 nm for (I) and (II), respectively.

• 出版日期2007-12