Introduction

Large-Scale Preparation, Chemical Exfoliation, and Structural Modification of Layered Zinc Hydroxide Nanocones: Transformation into Zinc Oxide Nanocones for Enhanced Photocatalytic Properties

“…The band appearing at approximately 1620–1630 cm –1 can be ascribed to the bending mode of water molecules . As for the low-frequency regions, the absorption bands less than 696 cm –1 belong to Zn–O stretching and Zn–OH bending vibrations. − Moreover, in the spectrum of layered zinc hydroxide NCs, the bands at 2920 and 2850 cm –1 are attributed to the asymmetric and symmetric CH 2 stretching vibrations of dodecylsulfate. The band at 1470 cm –1 corresponds to the CH 2 bending mode, and those in the range of 1300–900 cm –1 can be assigned to the stretching modes of the sulfate group. , However, in the spectrum of Zn 4 SO 4 (OH) 6 ·5H 2 O NCs, the stretching vibrations and bending mode of CH 2 disappear.…”

Mixed-Valence and Neutral Framework Inorganic−Organic Hybrid Materials: Synthesis, Characterization, and Magnetic Properties of [{Co(N(CH)4N)}(V2O5)2] and [{Co(N(CH)4N)}V2O6]

“…The infrared spectra of [{Co(N(CH) 4 N)}(V 2 O 5 ) 2 ] ( 1 ) and [{Co(N(CH) 4 N)}V 2 O 6 ] ( 2 ) exhibit a series of bands associated with the pyrazine ring which, unlike other aromatics, − usually lie below 1500 cm -1 . The bands between 1300 and 1000 cm -1 due to in-plane C−H bending and ring deformation slightly shifted to higher frequencies.…”

HgBrI: a possible tecton for NLO molecular materials?

“…11 As shown in Fig. 2, in the spectrum of the starting mixture characteristic signals of reagents are detectable: at 114 cm −1 for HgI 2 (α phase, red polymorph) 35 and at 187 cm −1 for HgBr 2 . 35 Gradually, the strong iodide peak decreases in intensity and disappears, while the solid solution signals increase in intensity.…”

“…2, in the spectrum of the starting mixture characteristic signals of reagents are detectable: at 114 cm −1 for HgI 2 (α phase, red polymorph) 35 and at 187 cm −1 for HgBr 2 . 35 Gradually, the strong iodide peak decreases in intensity and disappears, while the solid solution signals increase in intensity. It is interesting to notice that, in agreement with the formation of HgBrI, the polymorphic transformation of HgI 2 is observed, suggesting a correlation between these two reactions.…”