• Analytical Science and Technology
• /
• v.18 no.5
• /
• pp.391-395
• /
• 2005

The title complex, $[Cd(N_3)_2(2-ethylimidazole)_2]$, I, has been prepared and characterized by X-ray single crystallography. The complex I crystallizes in the monoclinic system, Cc space group with a = 16.200(3), b = 12.926(3), $c=7.007(1){\AA}$, ${\beta}=102.29(3)^{\circ}$, $V=1433.7(5){\AA}^3$, Z = 4, $R_1=0.0239$ and ${\omega}R_2=0.0604$ for 1874 independent reflections. Cd(II) atom has a slightly distorted octahedral coordination geometry, with four end-on (${\mu}-1$,1) bridging azido ligands and two 2-ethylimidazole ligands bonding through nitrogen atom. The central cadmium(II) atoms are run in parallel to the c-axis and are doubly bridged with neighboring cadmium(II) atoms by the end-on (${\mu}-1$,1) bridging azido ligands. Thus, this complex has a one-dimensional zigzag chain structure in which the 2-ethylimidazole is in the cis conformation.

• Korean Journal of Crystallography
• /
• v.12 no.4
• /
• pp.222-226
• /
• 2001

The title complex, $Ni(L)_4(NCS)_2$(1) (L=2-ethylimidazole) has been synthesized and charac-terized by X-ray single crystallography. The complex 1 crystallizes in the tertragonal system P4nc space group with a=10.587(2), $c=12.927(3){\AA}$, Z=2m, $R_1$=0.581 and $wR_$=0.1675 for 672 independent reflection. The central Ni(II) atom of the complex has a regular octa-hedral coordination geometry, with the 2-ethylimidazole ligands bonding through nitrogen atom and the isothiocyanate ligands bonding through nitrogen atom in a trans arrangement.

• Membrane and Water Treatment
• /
• v.10 no.3
• /
• pp.223-229
• /
• 2019

Titania modified by 2-ethylimidazole (2-EI) (denoted as $2-EI-TiO_2$) demonstrated visible light photocatalytic activity for the degradation of organic compounds. $2-EI-TiO_2$ was a bright brown powder that exhibited similar crystallinity and morphology with the control $TiO_2$. A diffuse reflectance spectrum indicated that $2-EI-TiO_2$ absorbs visible light of all wavelengths. X-ray photoelectron spectroscopy (XPS) confirmed the cationic state of nitrogen species (e.g. Ti-O-N) on the surface of $2-EI-TiO_2$. Visible light-illuminated $2-EI-TiO_2$ degraded $10{\mu}M$ 4-chlorophenol (4-CP) by approximately 85% in 4 h. The photochemical activity of $2-EI-TiO_2$ was selective in targeting the organic compound. The repeated use of $2-EI-TiO_2$ decreased the photocatalytic activity for the 4-CP degradation. Experiments using radical scavengers and oxidant probes revealed that the oxidation by photogenerated holes is responsible for the degradation of organic compounds by illuminated $2-EI-TiO_2$ and the role of $^{\bullet}OH$ is negligible.

• Proceedings of the Korea Crystallographic Association Conference
• /
• 2000.11a
• /
• pp.15-15
• /
• 2000