Experimental and theoretical vibrational spectroscopic investigation of Zn(II) halide complexes of 3-aminopyridine and 3-chloropyridine

Synthesis, spectroscopic, thermal and structural properties of [M(3-aminopyridine)2Ni(μ-CN)2(CN)2]n (M(II)=Co and Cu) heteropolynuclear cyano-bridged complexes

“…It is also known that, the 3AP molecule forms complexes by binding to the transition metal atoms from both ring nitrogen and NH 2 group nitrogen [26]. In the present study, the vibrational band assignments of the 3AP molecule are based on the results by work of Akalın and Akyüz [16].…”

“…In the FT-Raman spectrum of 3AP, the ring breathing mode is 1060 cm À1 , while the same mode is observed to be 1067 cm À1 for Co-3AP-Ni complex and 1072 cm À1 for Cu-3AP-Ni complex. Furthermore, when the pyridine ring nitrogen is involved in complexes formation, certain vibrational modes change in value due to the coupling with pyridine metal-nitrogen bond vibrations [16]. Both the change of modes caused by binding to metal of the from nitrogen atom of the pyridine ring and NH 2 group are marked with an asterisk in Table 2.…”

“…In addition to these applications, they are immensely used in analytical chemistry as reagents. Also aminopyridines have an important position among the heterocyclic compounds since they are known to be suitable ligands for d-transition metal ions and are therefore frequently used in the design and synthesis of multifunctional compounds [15,16].…”

Oxidized analogs of Di(1H-indol-3-yl)methyl-4-substituted benzenes are NR4A1-dependent UPR inducers with potent and safe anti-cancer activity

“…DIM-Ph-4-CF 3 analogs having phenyl ring 4-substituents (X) that varied in electronic effects [ 23 ] and volumes were selected from those previously reported [ 24 ] to determine whether they would oxidize to more active species. The OMe group of DIM-Ph-4-OMe was expected to behave as an electron donor, and the CF 3 , CO 2 Me, Cl and CO 2 H groups of other DIM-Ph-4-Xs were expected to withdraw electrons [ 25 – 27 ]. In addition, in cell culture media, the CO 2 H group was expected to deprotonate to the carboxylate (CO 2 – ), a moderate electron donor.…”

Synthesis, spectroscopic, thermal, and structural properties of cyanobridged metal complexes containing tetracyanonickelate(II) building blocks with 4-aminomethylpyridine

“…On the other hand, when the ampy ligand is linked to metal atoms from the ring nitrogen atom, there are significant shifts in the ring stretching and the deformation vibration frequencies. Especially, the increase in ring stretching frequencies is observed (17,23,31). The ring stretching modes of the free ampy ligand, ν(skeletal) assigned as the strong and sharp bands at 1220, 1088, 1065 and 994 cm -1 in the infrared spectrum of the free ampy.…”