Preparation of the Ferrous Complex with Cysteine and Its Transformations
摘要
Abstract
Ferrous cysteinate nanoparticles in the form of hexagonal nanoplates up to 20 nm thick have been synthesized in aerobic conditions. Their size has been confirmed by scanning electron microscopy. Their composition, investigated using atomic emission spectroscopy with inductively coupled plasma (ICP-AES), CHNS analysis, and IR spectroscopy, has coincided with the known complex Na2Fe(cyst)2·H2O (cyst being the cysteine fragment –SCH2СН(NН2)СОО–). Using X-ray photoelectron spectroscopy (XPS) and powder X-ray diffraction (XRD), the chemical transformations of the compound obtained under the action of air oxygen and moisture have been studied. Under these conditions, the Fe2+(cyst)(H2O)1.5 complex has been formed.