Anthryl-functionalized cyanide-bridged Fe/Co cubes

Abstract

Two anthryl-functionalized cyanide-bridged {Fe4Co4} cube complexes, [(pzTp)Fe(CN)3Co(TpEtOAn)]4[OTf]4·8MeCN·7Et2O (1) and [NEt4]3[(pzTp)Fe(CN)3Co(TpEtOAn)]4[OTf]7·5MeCN·2Et2O (2) (pzTp– = tetrapyrazolylborate, TpEtOAn = 2,2,2-tris-(pyrazol-1-yl)ethoxy(9-methyl-anthracene), were synthesized and characterized. The crystallographic study revealed that the {Fe4Co4} cubes are...

Blue Circularly Polarized Luminescence from Quantum-Confined CsPbBr3 Nanocrystals with a Different Degree of Shape Anisotropy

“…After chiral ligand attachment, in the FT-IR spectra of all three samples, characteristic C–H vibration peaks from the benzene ring located at 699 and 762 cm –1 emerge, which originate from the attachment of chiral ligand (R-MBABr) . A peak at 3020 cm –1 from the stretching of aromatic −CH can also be observed in Figure S5a-c, which belongs to the chiral R-MBABr molecules at the surface of nanocrystals. ,, Characteristic peaks from oleic acid (OA) and oleylamine (OAm) before and after ligand attachment are shown in Figure S5a-c. Those peaks, located at 1711 cm –1 , 2852 cm –1 , and 2923 cm –1 , can be attributed to CO vibration, symmetric and asymmetric aliphatic −CH 2 stretching, respectively. , The C–H x and CC–H stretching modes in both OAm and OA ligands are identified within the 2850–3000 and 3005 cm –1 range, respectively , (Figure S5).…”

“…Figure a-c presents Fourier-transformed infrared (FT-IR) spectra of the three kinds of CsPbBr 3 nanocrystals measured in the region between 800 and 650 cm –1 , which is typical for C–H vibrations of aromatics . After chiral ligand attachment, in the FT-IR spectra of all three samples, characteristic C–H vibration peaks from the benzene ring located at 699 and 762 cm –1 emerge, which originate from the attachment of chiral ligand (R-MBABr) .…”

“…32 A peak at 3020 cm −1 from the stretching of aromatic −CH 31 can also be observed in Figure S5a-c, which belongs to the chiral R-MBABr molecules at the surface of nanocrystals. 31,33,34 Characteristic peaks from oleic acid (OA) and oleylamine (OAm) before and after ligand attachment are shown in Figure S5a-c. Those peaks, located at 1711 cm −1 , 2852 cm −1 , and 2923 cm −1 , can be attributed to C�O vibration, symmetric and asymmetric aliphatic −CH 2 stretching, respectively.…”