engleski

A 1 : 2 complex of mercury(II)) chloride with 1, 3-imidazole-2-thione

The Hg atom in the title monomeric complex, dichlorobis(3-imidazolium-2-thiolato-S)mercury(II), HgCl_2(C_3H_4N_2S)_2, is four-coordinate having an irregular tetrahedral geometry composed of two Cl atoms (Hg-Cl 2.622 (2) and 2.663 (2) A) and two thione S atoms (Hg-S 2.445 (2) and 2.462 (2) A). the monodentate thione ligand adopts a zwiterionic form and exists as 3-imidazolium-2-thiolate ion. The bond angle S1-Hg-S2 of 130.87 (8)° has the greatest deviation from ideal tetrahedral geometry. Intermoleclar hydrogen bonds between two of the four N-H groups and one of the Cl atoms (3.232 (8) and 3.238 (7) A) stabilize the crystal structure, while the other two N-H groups contribute trough the formation of N-H� Cl intarmolecular hydrogen bonds with the other Cl atom (3.121 (7) and 3.188 (7) A).

crystal structure; 1; 3-imidazole-2-thione; Hg complex

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