Affiliations: Department of Chemistry, University of Patras, Patras, Greece | Department of Chemistry, University of Cyprus, Nicosia, Cyprus
Note: [] Corresponding author: Vassilios Nastopoulos, Department of Chemistry, University of Patras, Patras 26504, Greece. Fax: +30 2610 997118; E-mail: [email protected]
Note: [] Corresponding author: Panayiotis V. Ioannou, Department of Chemistry, University of Patras, Patras 26504, Greece. Fax: +30 2610 997118; [email protected]
Abstract: The reaction of arsenic(III) oxide and 2-mercaptopyridine N-oxide in methanol at 25°C led to a yellowish powder containing microcrystals of tris(2-sulfidopyridine N-oxide-κ2O,S)arsenic(III) suitable for X-ray analysis(triclinic, P$\overline 1 $, a = 9.6961(5) Å, b = 10.3412(6) Å, c = 10.4879(6) Å, α = 70.684(5)°, β = 75.249(4)°, γ = 62.061(4)°, Z = 2). Each of the three 2-mercaptopyridine N-oxide ligand chelates to the arsenic atom through the S and the loosely-coordinating O atom, thus forming a pseudo-chelate 5-membered ring that is not usual in the arsenic structural chemistry.
