Acesulfame complex compounds of some lanthanide group metal cations. Synthesis and characterization

Additive-Stabilized Emission Centers for Blue Perovskite Light-Emitting Diodes

“…In the spectra of Ace-K, the peaks at 1650 and 1590 cm −1 are identified as a coupled mode between the C�C stretching and C�O stretching. 36 The peaks at 1360 and 1174 cm −1 are confirmed as stretching vibrations of C−N and S�O bonds of Ace-K, respectively. 37 Compared with Ace-K, the stretching vibrations of PbBr 2 with Ace-K at around 1650, 1590, 1360, and 1174 cm −1 are shifted to lower wavenumbers, indicating the interaction of Ace-K with PbBr 2 .…”

“…To further illustrate this interaction, FTIR spectra for Ace-K, PbBr 2 with Ace-K, and the perovskite with Ace-K are displayed in Figure f. In the spectra of Ace-K, the peaks at 1650 and 1590 cm –1 are identified as a coupled mode between the CC stretching and CO stretching . The peaks at 1360 and 1174 cm –1 are confirmed as stretching vibrations of C–N and SO bonds of Ace-K, respectively .…”

Anion-Dependent Cu(II) Coordination Polymers: Geometric, Magnetic and Luminescent Properties

“…1 was prepared by way of the reaction of Cu(CH 3 COO) 2 •H 2 O and the bpba ligand in a methanol solution under aerobic conditions at room temperature and a 63% yield was observed. Strong absorptions at 1590 (asymmetric stretching mode) and 1432 (symmetric stretching mode) cm −1 , owing to the acetate anions coordinated to the Cu(II) ion, were observed in the IR spectrum of 1 in KBr [28,29]. The signals for the C-H bonds of the bpba ligand were detected at 3111-2818 cm −1 .…”