Structural features of 1-furoylthioureas 3-monosubstituted and 3,3-disubstituted: coordination to cadmium and analytical applications

摘要: The structural features of two series 1-furoylthioureas 3-monosubstituted (Series 1) and 3,3-disubstituted 2) their CdCl2 complexes are discussed. coordination strength through the sulfur atom is determined by ligand structure. In Series 1 ligands, carbonyl group proton on N2 engaged in a strong hydrogen bond interaction. This leads to an “S”-shaped conformation type C˭O C˭S groups where these donor sites reach maximum separation. absence that bridge derivatives, can adopt “U”-shaped type. feature also observed for novel crystal structures 1-(2-furoyl)-3-(2-hydroxyethyl)thiourea 1-furoyl-3-ethyl-3-phenylthiourea, as X-ray diffractometry reported here. Emphasis placed relationship between ligands behavior cadmium ionophores potentiometric amperometric sensors.