A new complexes of Co (II) and Cu (II) with N, N-disubstituted-N′-acylthioureas have been prepared and characterized by elemental analysis, and spectroscopic techniques. The structure of N, N-diethyl-N′-furoylthiourea and Co (II) complexes with N, N-diethyl-N′- furoyl-and N, N-diethyl-N′-benzoylthiourea were determined by X-ray crystallography. The structural data reveal that the acylthiourea moiety adopts a cis conformation in the crystal ...