Abstract
Two mercury(II) complexes containing cyanide and, N,N'-diethylthiourea (detu) and N,N'-dipropylthiourea (dprtu) ligands, [(detu)(2)Hg(CN)(2)] (1) and [(dprtu)(2)Hg(CN)(2)] (2), respectively, have been prepared and characterized by X-ray crystallography. In the both complexes Hg atom lies on a 2-fold rotation axis, and is coordinated to the sulfur atoms of two thiourea ligands and to two cyanide carbon atoms. Both have a distorted tetrahedral environment with bond angles about the Hg atoms in the range of 93.41(4)A degrees aEuro"146.75(19)A degrees. In the crystal structures symmetry related molecules are linked via N-H-N hydrogen bonds resulting in the formation of a two-dimensional network in 1, while in 2 a double stranded one-dimensional chain is formed.