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A new nitridolithosilicate La4Ba3Li3Si9N19 was synthesized by the flux method. The La4Ba3Li3Si9N19:Pr3+ phosphor shows a narrow-band red emission peaking at 640 nm with an fwhm of 50 nm when excited under near-UV light.

Flux synthesis is an effective method to discover large crystals of new compounds. In this paper, a solid-state reaction in Li flux produced a new nitridolithosilicate La

The new oxonitridosilicates Ln

We report a novel narrow-band blue emitting phosphor Sr7.92Mg7Si9N22:0.08Eu2+. The crystal structure of Sr8Mg7Si9N22 is composed of corner-sharing and edge-sharing [SiN4] tetrahedra and distorted square-pyramid [MgN5] polyhedra. Under 350 nm excitation, Eu2+ doped Sr8Mg7Si9N22 emits narrow-band blue light with maximum intensity at 450 nm and a fwhm of 38 nm.

We report a novel narrow-band blue emitting phosphor Sr7.92Mg7Si9N22:0.08Eu2+. The crystal structure of Sr8Mg7Si9N22 is composed of corner-sharing and edge-sharing [SiN4] tetrahedra and distorted square-pyramid [MgN5] polyhedra. Under 350 nm excitation, Eu2+ doped Sr8Mg7Si9N22 emits narrow-band blue light with maximum intensity at 450 nm and a fwhm of 38 nm.

C17H16N5O5Zn, monoclinic, C12/c 1( no. 15), a =2 3.87(1) A, b =9 .887(4) A, c =1 8.929(9) A, * =1 26.840(5)°, V =3 575.3 A 3 , Z =8 , Rgt(F) =0 .046, wRref(F 2 ) =0 .152, T =2 98 K. Source of material The title complex was obtained from the mixture of Zn(NO3)2 · 6H2 O( 0.075 g, 0.25 mmol), 5-methyl-2-pyrazinecarboxylic acid (2mpac, 0.067 g, 0.5 mmol), 4,4'-bipyridine (4,4'-bpy, 0.071 g, 0.5 mmol) and distilled water (8 mL), which was placed in aT eflon-lined stainless steel Parr bomb at 393 Kf or three days. After slowly cooling to room temperature, colorless single crystals were obtained (yield 39 %).