Metallkomplexe naphthyl-substituierter thioharnstoffderivate

The thiourea derivative N,N-diethyl-N′-2-naphthoylthiourea (1) and three N-(dialkylaminothiocarbonyl)-N′-(1-naphthyl)-arylamidines (2-4) have been synthesized and Cu^II-, Ni^II- and Pd^II-complexes of them have been prepared. According to the X-ray structure analyses 1 with Cu^II and Ni^II under deprotonation forms neutral bis-chelates of nearly square-planar coordination with a cis arrangement of the O and S ligator atoms. Using their N and S atoms in 1,3 position as ligators, 2-4 in deprotonated form coordinate to Cu^II and Pd^II as neutral bis-chelates, in the case of Cu^II with a distorted tetrahedral coordination. Pd^II is coordinated square planar and has, probably due to the spatial influence of the 1-naphthyl groups, a trans arrangement of the N and S ligator atoms.