Synthesis
and SHG Properties of Two New Cyanurates:
Sr<sub>3</sub>(O<sub>3</sub>C<sub>3</sub>N<sub>3</sub>)<sub>2</sub> (SCY) and Eu<sub>3</sub>(O<sub>3</sub>C<sub>3</sub>N<sub>3</sub>)<sub>2</sub> (ECY)
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Abstract
The
new cyanurates Sr<sub>3</sub>(O<sub>3</sub>C<sub>3</sub>N<sub>3</sub>)<sub>2</sub> (SCY) and Eu<sub>3</sub>(O<sub>3</sub>C<sub>3</sub>N<sub>3</sub>)<sub>2</sub> (ECY) were prepared via exothermic solid
state metathesis reactions from MCl<sub>2</sub> (M = Sr, Eu) and K(OCN)
in silica tubes at 525 °C. Both structures were characterized
by means of powder and single crystal X-ray diffraction, and their
structures are shown to crystallize with the noncentrosymmetric space
group <i>R</i>3<i>c</i> (No. 161). Infrared spectra
and nonlinear optical properties (NLO) of SCY and ECY are reported
in comparison to those of CCY and β-BaB<sub>2</sub>O<sub>4</sub> (β-BBO)
