Solid-state cadmium-113 NMR studies on cadmium complexes with glycine, L-alanine, and L-cysteine

Synthesis, spectroscopic characterization and antimicrobial studies of mercury(II) complexes of thiolates

“…In Aet, the two bands are indicative of NH 3 + group rather than NH 2 . Similar observation for the presence of NH 3 + groups were made in [Cd(NH 3 -CH-(CH 2 -SH)COO) 2 ] (3404 and 3010 cm −1 ) [37]. Also, peaks at around 1600 and 1470 cm −1 can be assigned to symmetric deformations and degenerate deformation modes, respectively, for NH 3 + group [7].…”

pH-Controlled Hydrothermal Synthesis of Submicrometer-Sized CdS Spheres with Uniform Size Distribution

“…While there are several suggested complex formation mechanisms, the commonly accepted ones are those involving the formation of a polymeric chain and 3:4 complexes (Cd n (L-Cys) n and Cd3(L-Cys)4). [15][16][17] The similarity between the two complex models is that they both indicate the formation of Cd-S and Cd-O bonds but not the coordination of the ammonium group in L-cysteine with the Cd(II) ion. 15,16 The possible reason for the marked difference between the morphologies of the CdS particles synthesized at pH 3, 7, and 12 is the ammonium-amine conversion when the solution pH is increased to 12, which is approximately 2 pH units higher than the pK a value of the ammonium group (α-NH 3 + ) in L-cysteine (pK a of α-NH 3 + = 10.28).…”

“…It is already known that Cd(II)-L-cysteine complexes in an aqueous solution indicate the formation of Cd-S and Cd-O bonds but not the coordination of the ammonium group in L-cysteine with the Cd(II) ion. 15,16 By controlling the deprotonation of ammonium group of Cd(II)-L-cysteine complex, one can easily control the intermolecular interactions between the complexes. Qian and coworkers successfully synthesized three-dimensional (3D) and one-dimensional (1D) CdS nanostructures by carrying out reactions between Cd(II) and L-cysteine in a binary solution comprising ethylenediamine and water.…”

Synthesis, theoretical calculations and antimicrobial studies of copper(I) complexes of cysteamine, cysteine and 2-mercaptonicotinic acid

“…(3404 and 3010 cm À1 ) [10]. Also, peaks at 1565 and 1480 cm À1 for 1 and 1575 and 1489 cm À1 for 2 can be assigned to symmetric deformations and degenerate deformation modes, respectively, for the NH 3 + group [11a].…”